How long is the flight from London to Siena?

A quick flight from London to Siena can take about 2h 10m. Vueling provides one of the quickest options available for as low as £142. The distance between London and Siena is about 741 mi. Both multi-stop and direct flights can be found to your destination and back.

In terms of precipitation, rainfall in Siena ranges from 30.0 - 100.0 inches per month. October is typically the wettest month, when rainfall can reach 100.0 mm. July is typically the driest time to visit Siena when rainfall is around 30.0 mm.

If weather is an important factor for your trip to Siena, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 24.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

What are the most popular routes from London to Siena?

The most popular route from London to Siena is London Heathrow - Florence Peretola. You may also consider London City - Florence Peretola or London Gatwick - Florence Peretola.

What are the cheapest flights from London to Siena?

While on average a flight from London to Siena is generally £161, our data shows the cheapest flight currently is £66. When looking at the most popular route, (London Heathrow - Florence Peretola), you can expect to pay £140 for that flight.

What are the most reliable airlines from London to Siena?

Consider Japan Airlines (75%), British Airways (68%) or American Airlines (67%) when booking your flight. These represent the most reliable airlines when flying from London to Siena.

What are the most popular airlines that fly from London to Siena?

British Airways, Ryanair and Lufthansa are the most popular airlines when flying from London to Siena.

How far in advance should I book a flight from London to Siena?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 53 days in advance, which can save you up to 92% on flights from London to Siena compared to booking the week you need them. Waiting 53 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £171. For sooner than that we have options available in the next 3 days from £216.

What is the cheapest month to fly from London to Siena?

January can be a great time to fly to Siena from London with a flight ticket averaging about £168. Cheapflights users have found deals in the month of January for as cheap as £51. The most expensive prices can be found in the month of July.

Can I find deals for flights from London to Siena that include hotel bookings?

Yes. In addition to deals on London to Siena flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from London to Siena?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Siena.

Can I find deals for business class flights from London to Siena?

Yes. Cheapflights offers flight deals from London to Siena by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£68+ Flights from London to Siena

Q: How much does it cost for a return flight from London to Siena?

Airfare is below average for this route at the moment. London to Siena flights typically cost between £161 and £287 in September. The cheapest return flight price found within the last 3 days was £131 on ITA Airways (22 Sept-24 Sept).

Cheapflights Tip: The best prices from London to Siena are usually found in January or November, booked 72 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap flight deals from London to Siena

Round-trip from	£131
One-way from	£68
Popular in	July
Cheapest in	January
Average price	£223

ITA Airways
22/9-24/9
4 total stops
30h 10m total
London to Siena

Search Deals

8/9
1 total stop
15h 05m total
London to Siena

Search Deals

Highest demand for flights based on searches. 21% potential increase in price (£33 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£4 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2025

Search Deals

Find flight deals from London to Siena

Cheapest flights from London to Siena
Explore the most affordable flight options available from London to Siena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 August 2025.

Mon 22/910:40LCY - FLR

2 stops11h 00mITA Airways

Wed 24/919:00FLR - LCY

2 stops19h 10mITA Airways

Deal found 23/8£131

Thu 16/1006:40LTN - FLR

1 stop13h 40mMultiple Airlines

Mon 20/1022:00FLR - LTN

1 stop15h 20mMultiple Airlines

Deal found 24/8£132

Wed 17/908:15LGW - FLR

1 stop4h 30mMultiple Airlines

Tue 23/906:25FLR - LGW

Nonstop2h 25mMultiple Airlines

Deal found 23/8£132

Tue 7/1015:30LHR - FLR

1 stop6h 25mMultiple Airlines

Tue 14/1007:30FLR - LHR

1 stop7h 45mMultiple Airlines

Deal found 23/8£132

Wed 8/1015:00LGW - FLR

Nonstop2h 25mVueling

Sat 11/1006:55FLR - LGW

Nonstop2h 25mVueling

Deal found 23/8£132

Tue 14/1010:15STN - FLR

1 stop5h 40mMultiple Airlines

Thu 16/1012:45FLR - STN

1 stop8h 15mMultiple Airlines

Deal found 23/8£132

Wed 1/1010:40LCY - FLR

2 stops11h 00mITA Airways

Sat 4/1015:30FLR - LCY

2 stops23h 05mITA Airways

Deal found 22/8£132

Thu 16/1014:00LGW - FLR

1 stop6h 20mVueling

Mon 20/1022:00FLR - LGW

1 stop15h 15mVueling

Deal found 24/8£133

Tue 7/1010:15STN - FLR

1 stop6h 20mMultiple Airlines

Sat 11/1011:10FLR - STN

1 stop7h 35mMultiple Airlines

Deal found 24/8£133

Sat 18/1021:25LTN - FLR

1 stop10h 00mMultiple Airlines

Mon 20/1022:00FLR - LTN

1 stop15h 20mMultiple Airlines

Deal found 24/8£134

Thu 16/1006:40STN - FLR

1 stop13h 40mMultiple Airlines

Mon 20/1022:00FLR - STN

1 stop15h 25mMultiple Airlines

Deal found 24/8£134

Tue 14/1007:00LTN - FLR

1 stop14h 55mMultiple Airlines

Sat 18/1013:15FLR - LTN

1 stop8h 45mMultiple Airlines

Deal found 24/8£134

Best flights from London to Siena
Discover carefully curated flight deals from London to Siena that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 25 August 2025.

Thu 16/1006:40LTN - FLR

1 stop13h 40mMultiple Airlines

Mon 20/1022:00FLR - LTN

1 stop15h 20mMultiple Airlines

Deal found 24/8£132

Fri 28/1116:25LGW - FLR

1 stop5h 45mVueling

Sun 30/1113:15FLR - LGW

Nonstop2h 20mVueling

Deal found 24/8£132

Tue 4/1119:05LCY - FLR

2 stops14h 50mITA Airways

Sat 8/1119:10FLR - LCY

2 stops18h 30mITA Airways

Deal found 24/8£132

Tue 2/1207:40LHR - FLR

1 stop7h 50mLufthansa

Sat 6/1217:15FLR - LHR

1 stop4h 45mLufthansa

Deal found 23/8£143

Wed 8/1006:00LHR - FLR

1 stop10h 45mAustrian Airlines

Wed 15/1011:00FLR - LHR

1 stop8h 40mAustrian Airlines

Deal found 24/8£144

Tue 7/1015:30LHR - FLR

1 stop6h 25mMultiple Airlines

Tue 14/1007:30FLR - LHR

1 stop7h 45mMultiple Airlines

Deal found 23/8£132

Wed 8/1015:00LGW - FLR

Nonstop2h 25mVueling

Sat 11/1006:55FLR - LGW

Nonstop2h 25mVueling

Deal found 23/8£132

Wed 1/1010:40LCY - FLR

2 stops11h 00mITA Airways

Sat 4/1015:30FLR - LCY

2 stops23h 05mITA Airways

Deal found 23/8£132

Fri 21/1113:50LHR - FLR

1 stop5h 50mLufthansa

Mon 24/1113:15FLR - LHR

1 stop6h 20mLufthansa

Deal found 24/8£143

Tue 14/1010:15STN - FLR

1 stop5h 40mMultiple Airlines

Thu 16/1012:45FLR - STN

1 stop8h 15mMultiple Airlines

Deal found 23/8£132

Sun 21/908:40LGW - FLR

Nonstop2h 20mVueling

Tue 30/906:25FLR - LGW

Nonstop2h 25mVueling

Deal found 24/8£133

Tue 11/1119:05LCY - FLR

2 stops14h 50mITA Airways

Sat 15/1106:30FLR - LCY

1 stop5h 25mITA Airways

Deal found 23/8£135

Direct flights from London to Siena
Explore direct flight options from London to Siena based on user searches, and compare prices and availability for your desired travel dates. Data last updated 25 August 2025.

Sun 21/908:40LGW - FLR

Nonstop2h 20mVueling

Tue 23/906:25FLR - LGW

Nonstop2h 25mVueling

Deal found 22/8£132

Sun 21/908:40LGW - FLR

Nonstop2h 20mVueling

Tue 30/906:25FLR - LGW

Nonstop2h 25mVueling

Deal found 24/8£133

Mon 22/919:50LGW - FLR

Nonstop2h 15mVueling

Fri 26/907:00FLR - LGW

Nonstop2h 25mVueling

Deal found 23/8£134

Thu 25/919:55LGW - FLR

Nonstop2h 15mVueling

Sat 27/906:55FLR - LGW

Nonstop2h 25mVueling

Deal found 23/8£135

Thu 4/919:55LGW - FLR

Nonstop2h 15mVueling

Sat 6/906:55FLR - LGW

Nonstop2h 25mVueling

Deal found 23/8£136

Tue 16/919:40LGW - FLR

Nonstop2h 20mVueling

Fri 19/907:00FLR - LGW

Nonstop2h 25mVueling

Deal found 24/8£137

Wed 10/908:30LGW - FLR

Nonstop2h 20mVueling

Wed 17/906:25FLR - LGW

Nonstop2h 25mVueling

Deal found 24/8£138

Wed 3/908:30LGW - FLR

Nonstop2h 20mVueling

Sat 6/906:55FLR - LGW

Nonstop2h 25mVueling

Deal found 22/8£139

Sun 21/908:40LGW - FLR

Nonstop2h 20mVueling

Wed 24/906:25FLR - LGW

Nonstop2h 25mVueling

Deal found 24/8£140

Wed 17/915:00LGW - FLR

Nonstop2h 25mVueling

Fri 19/907:00FLR - LGW

Nonstop2h 25mVueling

Deal found 23/8£140

Mon 1/1209:55LCY - FLR

Nonstop2h 05mBritish Airways

Thu 4/1215:20FLR - LCY

Nonstop2h 10mBritish Airways

Deal found 24/8£140

Tue 10/214:55LGW - FLR

Nonstop2h 10mIberia

Wed 11/218:00FLR - LGW

Nonstop2h 15mIberia

Deal found 22/8£141

Last-minute flights from London to Siena
Discover last-minute flight deals from London to Siena. Data last updated 25 August 2025 and is based on user searches.

Tue 26/819:40LGW - FLR

Nonstop2h 20mVueling

Sat 4/1006:55FLR - LGW

Nonstop2h 25mVueling

Deal found 24/8£134

Tue 26/814:30LGW - FLR

Nonstop2h 25mVueling

Sat 6/906:55FLR - LGW

Nonstop2h 25mVueling

Deal found 24/8£134

Wed 27/808:30LGW - FLR

Nonstop2h 20mVueling

Wed 3/906:25FLR - LGW

Nonstop2h 25mVueling

Deal found 23/8£136

Thu 28/819:55LGW - FLR

Nonstop2h 15mMultiple Airlines

Thu 4/914:10FLR - LGW

1 stop9h 40mMultiple Airlines

Deal found 23/8£137

Thu 28/819:55LGW - FLR

Nonstop2h 15mVueling

Fri 5/906:55FLR - LGW

Nonstop2h 25mVueling

Deal found 23/8£137

Sat 30/819:50LGW - FLR

Nonstop2h 15mVueling

Wed 10/906:25FLR - LGW

Nonstop2h 25mVueling

Deal found 23/8£135

Sat 6/921:25LTN - FLR

1 stop10h 00mMultiple Airlines

Wed 10/906:15FLR - LTN

1 stop12h 50mMultiple Airlines

Deal found 24/8£137

Wed 10/908:30LGW - FLR

Nonstop2h 20mVueling

Wed 17/906:25FLR - LGW

Nonstop2h 25mVueling

Deal found 24/8£138

Wed 17/908:15LGW - FLR

1 stop4h 30mMultiple Airlines

Tue 23/906:25FLR - LGW

Nonstop2h 25mMultiple Airlines

Deal found 23/8£132

Mon 22/910:40LCY - FLR

2 stops11h 00mITA Airways

Wed 24/919:00FLR - LCY

2 stops19h 10mITA Airways

Deal found 23/8£131

Mon 22/919:50LGW - FLR

Nonstop2h 15mMultiple Airlines

Mon 29/919:00FLR - LGW

1 stop15h 00mMultiple Airlines

Deal found 23/8£133

Mon 22/911:15STN - FLR

1 stop9h 50mMultiple Airlines

Wed 24/906:15FLR - STN

1 stop5h 30mMultiple Airlines

Deal found 23/8£137

One-way flights from London to Siena
Search for one-way flight options from London to Siena. Find affordable one-way fares based on user searches. Data last updated 25 August 2025.

Mon 8/906:00LTN - FLR

1 stop15h 05mMultiple Airlines

Deal found 23/8£68

Mon 27/1015:20LGW - FLR

1 stop28h 00mVueling

Deal found 23/8£68

Sat 27/915:10STN - FLR

2 stops16h 35mMultiple Airlines

Deal found 23/8£68

Wed 5/1106:50LTN - FLR

2 stops14h 40mMultiple Airlines

Deal found 24/8£69

Thu 9/1021:05LGW - FLR

1 stop10h 20mVueling

Deal found 23/8£69

Thu 25/913:20LTN - FLR

1 stop23h 25mMultiple Airlines

Deal found 22/8£69

Tue 23/922:05STN - FLR

2 stops14h 40mMultiple Airlines

Deal found 24/8£69

Wed 10/908:30LGW - FLR

Nonstop2h 20mVueling

Deal found 24/8£70

Mon 22/911:15STN - FLR

1 stop9h 50mMultiple Airlines

Deal found 23/8£70

Wed 1/1007:05LTN - FLR

1 stop24h 45mMultiple Airlines

Deal found 24/8£71

Thu 4/919:55LGW - FLR

Nonstop2h 15mVueling

Deal found 24/8£71

Mon 27/1016:45STN - FLR

2 stops26h 35mMultiple Airlines

Deal found 23/8£71

Fly from

Fly to

Route

Depart

Return

Price

LondonFlorence

LTN - FLR

LTNFLR

London Luton

Thu 16/10

06:40-21:20

1 stop13h 40m

Florence Peretola

Mon 20/10

22:00-12:20

1 stop15h 20m

£132

LondonFlorence

LGW - FLR

LGWFLR

London Gatwick

Fri 28/11

16:25-23:10

1 stop5h 45m

Florence Peretola

Sun 30/11

13:15-14:35

Nonstop2h 20m

£132

LondonFlorence

LCY - FLR

LCYFLR

London City

Tue 4/11

19:05-10:55

2 stops14h 50m

Florence Peretola

Sat 8/11

19:10-12:40

2 stops18h 30m

£132

LondonFlorence

LHR - FLR

LHRFLR

London Heathrow

Tue 7/10

15:30-22:55

1 stop6h 25m

Florence Peretola

Tue 14/10

07:30-14:15

1 stop7h 45m

£132

LondonFlorence

LGW - FLR

LGWFLR

London Gatwick

Wed 8/10

15:00-18:25

Nonstop2h 25m

Florence Peretola

Sat 11/10

06:55-08:20

Nonstop2h 25m

£132

LondonFlorence

LCY - FLR

LCYFLR

London City

Wed 1/10

10:40-22:40

2 stops11h 00m

Florence Peretola

Sat 4/10

15:30-13:35

2 stops23h 05m

£132

LondonFlorence

STN - FLR

STNFLR

London Stansted

Tue 14/10

10:15-16:55

1 stop5h 40m

Florence Peretola

Thu 16/10

12:45-20:00

1 stop8h 15m

£132

LondonFlorence

LGW - FLR

LGWFLR

London Gatwick

Sun 21/9

08:40-12:00

Nonstop2h 20m

Florence Peretola

Tue 30/9

06:25-07:50

Nonstop2h 25m

£133

LondonFlorence

LGW - FLR

LGWFLR

London Gatwick

Mon 22/9

19:50-23:05

Nonstop2h 15m

Florence Peretola

Mon 29/9

19:00-09:00

1 stop15h 00m

£133

LondonFlorence

LGW - FLR

LGWFLR

London Gatwick

Wed 5/11

07:55-23:15

1 stop14h 20m

Florence Peretola

Sat 8/11

06:45-19:25

1 stop13h 40m

£133

Flights are sorted by cheapest return flights first.

Deals found on 23/8

Showing 1-10 of 60 results

...

Best time to book a flight from London to Siena

Have a flexible travel schedule? Discover the best time to fly to Siena from London with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London to Siena

How far ahead should I book a flight from London to Siena?

To ensure you get the cheapest price possible for a flight from London to Siena, you should look to book at least 72 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from London to Siena?

Currently, January is the cheapest month in which you can book a flight from London to Siena (average of £118). Flying from London to Siena in May is currently the most expensive (average of £224). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LON to S1N?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London to Siena as you normally would.

What is the cheapest day to fly from London to Siena?

Travellers seeking maximum savings on their London to Siena flight should consider departing on Saturday at midday when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost for a return flight from London to Siena?

Reviews of airlines servicing Siena

Check out reviews from past customers who have flown with Vueling, easyJet, andLufthansa from London to Siena to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Vueling

7.1

Good

1,180 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Nov 2024

BCN - DUB

My tv was not working and I had to switch seats 3 times. Other than that excellent experience.

Vueling

7.1

Good

1,180 reviews

Vueling

7.1

Good

1,180 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Nov 2024

BCN - DUB

My tv was not working and I had to switch seats 3 times. Other than that excellent experience.

easyJet

6.9

Okay

1,817 reviews

Vueling

7.1

Good

1,180 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Nov 2024

BCN - DUB

My tv was not working and I had to switch seats 3 times. Other than that excellent experience.

Lufthansa

6.8

Okay

7,359 reviews

Vueling

7.1

Good

1,180 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Nov 2024

BCN - DUB

My tv was not working and I had to switch seats 3 times. Other than that excellent experience.

Ryanair

6.8

Okay

5,152 reviews

Vueling

7.1

Good

1,180 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Nov 2024

BCN - DUB

My tv was not working and I had to switch seats 3 times. Other than that excellent experience.

British Airways

6.7

Okay

7,305 reviews

Vueling

7.1

Good

1,180 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Nov 2024

BCN - DUB

My tv was not working and I had to switch seats 3 times. Other than that excellent experience.

Related info for your journey

How long is the flight from London to Siena?
A quick flight from London to Siena can take about 2h 10m. Vueling provides one of the quickest options available for as low as £142. The distance between London and Siena is about 741 mi. Both multi-stop and direct flights can be found to your destination and back.
What are the most popular routes from London to Siena?
The most popular route from London to Siena is London Heathrow - Florence Peretola. You may also consider London City - Florence Peretola or London Gatwick - Florence Peretola.
What are the most reliable airlines from London to Siena?
Consider Japan Airlines (75%), British Airways (68%) or American Airlines (67%) when booking your flight. These represent the most reliable airlines when flying from London to Siena.
What are the cheapest flights from London to Siena?
While on average a flight from London to Siena is generally £161, our data shows the cheapest flight currently is £66. When looking at the most popular route, (London Heathrow - Florence Peretola), you can expect to pay £140 for that flight.
Can I find deals for flights from London to Siena that include hotel bookings?
Yes. In addition to deals on London to Siena flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to Siena?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Siena.
Can I find deals for business class flights from London to Siena?
Yes. Cheapflights offers flight deals from London to Siena by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from London to Siena?
Currently, January is the cheapest month in which you can book a flight from London to Siena (average of £118). Flying from London to Siena in May is currently the most expensive (average of £224). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for London to Siena

Heathrow to Leonardo da Vinci/Fiumicino flights

London City to Leonardo da Vinci/Fiumicino flights

Heathrow to Florence flights

Stansted to Ciampino flights

Gatwick to Leonardo da Vinci/Fiumicino flights

Stansted to Leonardo da Vinci/Fiumicino flights

London City to Florence flights

Heathrow to Pisa flights

Gatwick to Florence flights

Luton to Leonardo da Vinci/Fiumicino flights

Gatwick to Pisa flights

Manchester to Leonardo da Vinci/Fiumicino flights

Luton to Pisa flights

Stansted to Pisa flights

Manchester to Ciampino flights

Luton to Ciampino flights

London City to Pisa flights

Heathrow to Ciampino flights

Stansted to Florence flights

Luton to Florence flights

Edinburgh to Leonardo da Vinci/Fiumicino flights

Gatwick to Ciampino flights

Manchester to Pisa flights

Birmingham to Leonardo da Vinci/Fiumicino flights

Edinburgh to Ciampino flights

Bristol to Leonardo da Vinci/Fiumicino flights

Manchester to Florence flights

Edinburgh to Pisa flights

Southend to Pisa flights

Edinburgh to Florence flights

Birmingham to Ciampino flights

Newcastle upon Tyne to Leonardo da Vinci/Fiumicino flights

Liverpool to Leonardo da Vinci/Fiumicino flights

Bristol to Pisa flights

Leeds to Leonardo da Vinci/Fiumicino flights

Bristol to Ciampino flights

East Midlands to Leonardo da Vinci/Fiumicino flights

Birmingham to Florence flights

Birmingham to Pisa flights

Southend to Leonardo da Vinci/Fiumicino flights

Southend to Florence flights

Liverpool to Ciampino flights

Southampton to Leonardo da Vinci/Fiumicino flights

East Midlands to Ciampino flights

Newcastle upon Tyne to Ciampino flights

Newcastle upon Tyne to Florence flights

Bournemouth to Leonardo da Vinci/Fiumicino flights

Exeter to Leonardo da Vinci/Fiumicino flights

Grimsby to Leonardo da Vinci/Fiumicino flights

Leeds to Pisa flights

Top 9 airlines flying from London to Siena

Airline	Cheapest	Average	Flexibility	On-time
Ryanair	Cheapest£32	Average£130	FlexibilityNo cancel fee	On-timeN/A	Search Ryanair flights
easyJet	Cheapest£39	Average£122	FlexibilityNo cancel fee	On-time86%	Search easyJet flights
Vueling	Cheapest£56	Average£151	FlexibilityNo cancel fee	On-time88%	Search Vueling flights
KLM	Cheapest£84	Average£159	FlexibilityNo cancel fee	On-time75%	Search KLM flights
British Airways	Cheapest£90	Average£240	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
SWISS	Cheapest£122	Average£206	FlexibilityNo cancel fee	On-time79%	Search SWISS flights
Lufthansa	Cheapest£126	Average£185	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Air France	Cheapest£144	Average£249	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Brussels Airlines	Cheapest£157	Average£244	FlexibilityNo cancel fee	On-timeN/A	Search Brussels Airlines flights

Fly with Cheapflights

How does Cheapflights help users find flights from London to Siena?

When you search for this flight from London to Siena, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from London to Siena?

Cheapflights simply makes it quick and affordable to book flights from London to Siena by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from London to Siena with no change fees?

Certainly. Search results for flights to Siena from London shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from London to Siena become cheaper?

Yes, Cheapflights offers price alerts on London to Siena flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from London to Siena from £68

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from London to Siena are usually found in January or November, booked 72 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap flight deals from London to Siena

Keep the following information in mind while searching for London to Siena flight deals. Data was last updated 25 August 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from London to Siena

Cheapest flights from London to SienaExplore the most affordable flight options available from London to Siena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 August 2025.

Explore the most affordable flight options available from London to Siena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 August 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to Siena that are best for you.

Best time to book a flight from London to Siena

Have a flexible travel schedule? Discover the best time to fly to Siena from London with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from London to Siena

How far ahead should I book a flight from London to Siena?

Use this chart to determine the optimal time to book a return flight from London to Siena. Price data was last updated on 22 August 2025.

What is the cheapest month to book a flight from London to Siena?

What is the cheapest time of day to fly from LON to S1N?

Find hourly flight availability from London to Siena. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 25 August 2025.

What is the cheapest day to fly from London to Siena?

Use this chart to determine the cheapest time to fly return from London to Siena. Price data was last updated on 16 December 2024.

How much does it cost for a return flight from London to Siena?

Reviews of airlines servicing Siena

Get insights into the airlines that provide service to Siena. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Siena. Reviews last updated 25 August 2025.

Check out reviews from past customers who have flown with Vueling, easyJet, andLufthansa from London to Siena to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from London to Siena. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from London to Siena?

What are the most popular routes from London to Siena?

What are the most reliable airlines from London to Siena?

What are the cheapest flights from London to Siena?

Can I find deals for flights from London to Siena that include hotel bookings?

How can I find direct flights from London to Siena?

Can I find deals for business class flights from London to Siena?

What is the cheapest month to book a flight from London to Siena?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for London to Siena

See prices for flight routes from nearby airports that may be better suited for you.

Top 9 airlines flying from London to Siena

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to Siena?

Why should you use Cheapflights to find cheap flight tickets from London to Siena?

Can Cheapflights find flights from London to Siena with no change fees?

Can Cheapflights notify me if prices for flights from London to Siena become cheaper?

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from London to Siena
Explore the most affordable flight options available from London to Siena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 August 2025.