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 £114. The distance between London and Siena is about 733 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 £135, our data shows the cheapest flight currently is £64. When looking at the most popular route, (London Heathrow - Florence Peretola), you can expect to pay £131 for that flight.

What are the most reliable airlines from London to Siena?

Consider Japan Airlines (78%), American Airlines (73%) or British Airways (73%) 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.

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.

£62+ 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 £142 and £291 in November. The cheapest return flight price found within the last 3 days was £106 on Vueling (2 Nov-5 Nov).

Cheapflights Tip: The best prices from London to Siena are usually found in January or November, booked 60 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap flight deals from London to Siena

Round-trip from	£106
One-way from	£62
Popular in	July
Cheapest in	January
Average price	£202

Vueling
2/11-5/11
1 total stop
14h 40m total
London to Siena

Search Deals

Vueling
28/9
Nonstop
2h 20m total
London to Siena

Search Deals

Highest demand for flights based on searches. 19% potential increase in price (£29 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£5 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 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 18 September 2025.

Sun 2/1119:55LGW - FLR

Nonstop2h 10mVueling

Wed 5/1121:00FLR - LGW

1 stop12h 30mVueling

Deal found 17/9£106

Sun 28/908:40LGW - FLR

Nonstop2h 20mVueling

Thu 2/1007:35FLR - LGW

Nonstop2h 25mVueling

Deal found 16/9£107

Sat 4/1005:30LGW - FLR

1 stop16h 45mMultiple Airlines

Tue 7/1006:25FLR - LGW

Nonstop2h 25mMultiple Airlines

Deal found 17/9£108

Fri 10/1019:55LGW - FLR

Nonstop2h 15mVueling

Mon 13/1006:55FLR - LGW

Nonstop2h 25mVueling

Deal found 16/9£108

Sat 20/919:50LGW - FLR

Nonstop2h 15mVueling

Wed 24/906:25FLR - LGW

Nonstop2h 25mVueling

Deal found 17/9£109

Sun 21/908:40LGW - FLR

Nonstop2h 20mVueling

Wed 24/906:25FLR - LGW

Nonstop2h 25mVueling

Deal found 16/9£110

Wed 15/1016:30LGW - FLR

1 stop5h 25mVueling

Sat 18/1006:55FLR - LGW

Nonstop2h 25mVueling

Deal found 17/9£111

Sat 1/1108:30LGW - FLR

1 stop13h 45mVueling

Wed 5/1121:00FLR - LGW

1 stop12h 30mVueling

Deal found 17/9£112

Wed 1/1016:30LGW - FLR

1 stop5h 25mVueling

Tue 7/1006:25FLR - LGW

Nonstop2h 25mVueling

Deal found 16/9£114

Sat 11/1019:50LGW - FLR

Nonstop2h 15mVueling

Mon 13/1006:55FLR - LGW

Nonstop2h 25mVueling

Deal found 17/9£115

Mon 6/1006:00LTN - FLR

1 stop15h 05mMultiple Airlines

Wed 8/1006:15FLR - LTN

1 stop12h 50mMultiple Airlines

Deal found 16/9£116

Sun 30/1108:30STN - FLR

Nonstop2h 15mBritish Airways

Sat 6/1215:15FLR - STN

Nonstop2h 15mBritish Airways

Deal found 17/9£117

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 18 September 2025.

Fri 9/114:55LGW - FLR

Nonstop2h 10mVueling

Sun 11/109:50FLR - LGW

1 stop6h 30mVueling

Deal found 17/9£114

Sat 11/1009:20LGW - FLR

1 stop12h 35mMultiple Airlines

Sun 19/1006:25FLR - LGW

Nonstop2h 25mMultiple Airlines

Deal found 16/9£116

Sun 30/1108:30STN - FLR

Nonstop2h 15mBritish Airways

Sat 6/1215:15FLR - STN

Nonstop2h 15mBritish Airways

Deal found 17/9£117

Tue 10/214:55LGW - FLR

Nonstop2h 10mIberia

Wed 11/218:00FLR - LGW

Nonstop2h 15mIberia

Deal found 17/9£136

Fri 14/1113:50LHR - FLR

1 stop5h 50mLufthansa

Mon 17/1117:15FLR - LHR

1 stop4h 45mLufthansa

Deal found 18/9£144

Fri 28/1120:05LHR - FLR

1 stop21h 00mSWISS

Tue 2/1218:55FLR - LHR

1 stop3h 45mSWISS

Deal found 16/9£149

Tue 10/208:25LCY - FLR

1 stop9h 00mITA Airways

Sat 14/215:30FLR - LCY

2 stops22h 10mITA Airways

Deal found 15/9£153

Sat 11/1019:50LGW - FLR

Nonstop2h 15mVueling

Mon 13/1006:55FLR - LGW

Nonstop2h 25mVueling

Deal found 18/9£119

Sat 11/1017:15LTN - FLR

1 stop14h 30mMultiple Airlines

Tue 14/1021:55FLR - LTN

1 stop15h 25mMultiple Airlines

Deal found 17/9£126

Mon 6/1019:50LGW - FLR

Nonstop2h 15mVueling

Tue 7/1021:55FLR - LGW

1 stop11h 35mVueling

Deal found 16/9£125

Sat 4/1006:40STN - FLR

1 stop9h 55mMultiple Airlines

Sat 11/1011:10FLR - STN

1 stop7h 35mMultiple Airlines

Deal found 17/9£128

Mon 2/309:55LCY - FLR

Nonstop2h 05mBritish Airways

Fri 6/315:20FLR - LCY

Nonstop2h 10mBritish Airways

Deal found 16/9£146

Sat 15/1111:10LHR - FLR

1 stop4h 20mLufthansa

Sun 16/1117:15FLR - LHR

1 stop4h 45mLufthansa

Deal found 18/9£149

Tue 21/1017:10LHR - FLR

1 stop4h 25mSWISS

Wed 29/1019:00FLR - LHR

1 stop3h 40mSWISS

Deal found 17/9£158

Thu 6/1108:30LGW - FLR

1 stop7h 05mVueling

Fri 7/1107:45FLR - LGW

1 stop5h 25mVueling

Deal found 18/9£131

Tue 11/1121:20STN - FLR

1 stop10h 55mMultiple Airlines

Sat 15/1107:05FLR - STN

2 stops17h 05mMultiple Airlines

Deal found 17/9£131

Sat 15/1111:10LHR - FLR

1 stop4h 20mLufthansa

Mon 17/1117:15FLR - LHR

1 stop4h 45mLufthansa

Deal found 18/9£149

Fri 31/1011:35LCY - FLR

Nonstop2h 05mBritish Airways

Fri 7/1113:00FLR - LCY

Nonstop2h 10mBritish Airways

Deal found 16/9£152

Tue 4/1116:45LCY - FLR

1 stop4h 55mITA Airways

Fri 7/1115:30FLR - LCY

2 stops7h 20mITA Airways

Deal found 17/9£168

Tue 11/1109:50LGW - FLR

1 stop11h 50mVueling

Thu 13/1109:50FLR - LGW

1 stop6h 20mVueling

Deal found 18/9£132

Tue 30/911:05STN - FLR

1 stop10h 50mMultiple Airlines

Thu 2/1022:00FLR - STN

1 stop10h 15mMultiple Airlines

Deal found 16/9£134

Thu 13/1113:50LHR - FLR

1 stop5h 50mLufthansa

Mon 17/1117:15FLR - LHR

1 stop4h 45mLufthansa

Deal found 18/9£149

Tue 10/217:45LCY - FLR

1 stop23h 30mSWISS

Sat 14/215:00FLR - LCY

1 stop22h 40mSWISS

Deal found 15/9£167

Tue 10/211:35LCY - FLR

Nonstop2h 05mBritish Airways

Sat 14/210:55FLR - LCY

Nonstop2h 10mBritish Airways

Deal found 15/9£155

Sat 8/1106:45LGW - FLR

1 stop12h 35mVueling

Mon 10/1106:45FLR - LGW

1 stop12h 50mVueling

Deal found 17/9£134

Sat 4/1006:40STN - FLR

1 stop9h 55mMultiple Airlines

Wed 15/1022:00FLR - STN

1 stop14h 50mMultiple Airlines

Deal found 17/9£134

Sat 4/1019:00LHR - FLR

Nonstop2h 20mBritish Airways

Tue 7/1007:05FLR - LHR

Nonstop2h 25mBritish Airways

Deal found 16/9£161

Thu 6/1120:05LTN - FLR

2 stops25h 25mMultiple Airlines

Mon 10/1110:45FLR - LTN

2 stops22h 45mMultiple Airlines

Deal found 17/9£137

Tue 20/115:15LHR - FLR

1 stop7h 00mVueling

Sat 24/106:45FLR - LHR

1 stop8h 40mVueling

Deal found 16/9£144

Wed 15/1013:55STN - FLR

1 stop6h 30mMultiple Airlines

Tue 21/1013:40FLR - STN

2 stops9h 00mMultiple Airlines

Deal found 17/9£139

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 18 September 2025.

Fri 16/119:55LGW - FLR

Nonstop2h 10mVueling

Mon 19/112:55FLR - LGW

Nonstop2h 20mVueling

Deal found 16/9£106

Sun 28/908:40LGW - FLR

Nonstop2h 20mVueling

Thu 2/1007:35FLR - LGW

Nonstop2h 25mVueling

Deal found 16/9£107

Fri 14/1119:55LGW - FLR

Nonstop2h 10mVueling

Mon 17/1112:55FLR - LGW

Nonstop2h 20mVueling

Deal found 18/9£108

Fri 10/1019:55LGW - FLR

Nonstop2h 15mVueling

Mon 13/1006:55FLR - LGW

Nonstop2h 25mVueling

Deal found 16/9£108

Sun 28/908:40LGW - FLR

Nonstop2h 20mVueling

Tue 30/906:25FLR - LGW

Nonstop2h 25mVueling

Deal found 17/9£109

Tue 20/108:55LGW - FLR

Nonstop2h 15mMultiple Airlines

Thu 22/118:00FLR - LGW

Nonstop2h 15mMultiple Airlines

Deal found 18/9£111

Fri 10/1019:55LGW - FLR

Nonstop2h 15mVueling

Sat 11/1006:55FLR - LGW

Nonstop2h 25mVueling

Deal found 17/9£112

Sun 19/1019:50LGW - FLR

Nonstop2h 15mVueling

Thu 23/1007:35FLR - LGW

Nonstop2h 25mVueling

Deal found 16/9£114

Sat 11/1019:50LGW - FLR

Nonstop2h 15mVueling

Mon 13/1006:55FLR - LGW

Nonstop2h 25mVueling

Deal found 17/9£115

Wed 15/1015:00LGW - FLR

Nonstop2h 25mVueling

Sat 18/1006:55FLR - LGW

Nonstop2h 25mVueling

Deal found 18/9£116

Fri 17/1019:55LGW - FLR

Nonstop2h 15mVueling

Sun 19/1006:25FLR - LGW

Nonstop2h 25mVueling

Deal found 17/9£117

Sun 30/1108:30STN - FLR

Nonstop2h 15mBritish Airways

Sat 6/1215:15FLR - STN

Nonstop2h 15mBritish Airways

Deal found 17/9£117

Last-minute flights from London to Siena
Discover last-minute flight deals from London to Siena. Data last updated 18 September 2025 and is based on user searches.

Sat 20/919:50LGW - FLR

Nonstop2h 15mVueling

Wed 24/906:25FLR - LGW

Nonstop2h 25mVueling

Deal found 17/9£109

Sun 21/908:40LGW - FLR

Nonstop2h 20mVueling

Wed 24/906:25FLR - LGW

Nonstop2h 25mVueling

Deal found 16/9£110

Thu 25/919:55LGW - FLR

Nonstop2h 15mVueling

Wed 1/1006:25FLR - LGW

Nonstop2h 25mVueling

Deal found 17/9£112

Sun 28/908:40LGW - FLR

Nonstop2h 20mVueling

Thu 2/1007:35FLR - LGW

Nonstop2h 25mVueling

Deal found 16/9£107

Wed 1/1016:30LGW - FLR

1 stop5h 25mVueling

Tue 7/1006:25FLR - LGW

Nonstop2h 25mVueling

Deal found 16/9£114

Sat 4/1005:30LGW - FLR

1 stop16h 45mMultiple Airlines

Tue 7/1006:25FLR - LGW

Nonstop2h 25mMultiple Airlines

Deal found 17/9£108

Mon 6/1006:00LTN - FLR

1 stop15h 05mMultiple Airlines

Wed 8/1006:15FLR - LTN

1 stop12h 50mMultiple Airlines

Deal found 16/9£116

Mon 6/1021:05LGW - FLR

2 stops24h 50mMultiple Airlines

Wed 8/1006:25FLR - LGW

Nonstop2h 25mMultiple Airlines

Deal found 16/9£116

Fri 10/1019:55LGW - FLR

Nonstop2h 15mVueling

Mon 13/1006:55FLR - LGW

Nonstop2h 25mVueling

Deal found 16/9£108

Sat 11/1019:50LGW - FLR

Nonstop2h 15mVueling

Tue 14/1017:40FLR - LGW

Nonstop2h 20mVueling

Deal found 17/9£115

Wed 15/1016:30LGW - FLR

1 stop5h 25mVueling

Sat 18/1006:55FLR - LGW

Nonstop2h 25mVueling

Deal found 17/9£111

Wed 15/1007:00LTN - FLR

1 stop13h 25mMultiple Airlines

Wed 22/1006:15FLR - LTN

1 stop12h 50mMultiple Airlines

Deal found 17/9£119

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 18 September 2025.

Sun 28/908:40LGW - FLR

Nonstop2h 20mVueling

Deal found 17/9£62

Sat 4/1006:40STN - FLR

1 stop9h 55mMultiple Airlines

Deal found 17/9£62

Mon 29/911:35LTN - FLR

1 stop5h 15mMultiple Airlines

Deal found 17/9£63

Wed 15/1008:55LGW - FLR

2 stops11h 30mMultiple Airlines

Deal found 15/9£63

Mon 3/1117:30SEN - FLR

2 stops26h 30mMultiple Airlines

Deal found 16/9£63

Tue 14/1021:15STN - FLR

1 stop11h 45mMultiple Airlines

Deal found 16/9£63

Sat 11/1017:15LTN - FLR

1 stop14h 30mMultiple Airlines

Deal found 16/9£64

Tue 21/1020:20LGW - FLR

2 stops19h 40mMultiple Airlines

Deal found 16/9£64

Sun 5/1007:40STN - FLR

Nonstop2h 15mBritish Airways

Deal found 17/9£64

Sat 4/1015:30LHR - FLR

1 stop6h 25mMultiple Airlines

Deal found 16/9£64

Fri 2/114:55LGW - FLR

Nonstop2h 10mVueling

Deal found 15/9£64

Tue 7/1020:20LGW - FLR

2 stops25h 10mMultiple Airlines

Deal found 16/9£65

Fly from

Fly to

Route

Depart

Return

Price

LondonFlorence

LGW - FLR

LGWFLR

London Gatwick

Fri 9/1

14:55-18:05

Nonstop2h 10m

Florence Peretola

Sun 11/1

09:50-15:20

1 stop6h 30m

£114

LondonFlorence

LGW - FLR

LGWFLR

London Gatwick

Sat 11/10

09:20-22:55

1 stop12h 35m

Florence Peretola

Sun 19/10

06:25-07:50

Nonstop2h 25m

£116

LondonFlorence

STN - FLR

STNFLR

London Stansted

Sun 30/11

08:30-11:45

Nonstop2h 15m

Florence Peretola

Sat 6/12

15:15-16:30

Nonstop2h 15m

£117

LondonFlorence

LGW - FLR

LGWFLR

London Gatwick

Sat 11/10

19:50-23:05

Nonstop2h 15m

Florence Peretola

Mon 13/10

06:55-08:20

Nonstop2h 25m

£119

LondonFlorence

LGW - FLR

LGWFLR

London Gatwick

Mon 6/10

19:50-23:05

Nonstop2h 15m

Florence Peretola

Tue 7/10

21:55-08:30

1 stop11h 35m

£125

LondonFlorence

LTN - FLR

LTNFLR

London Luton

Sat 11/10

17:15-08:45

1 stop14h 30m

Florence Peretola

Tue 14/10

21:55-12:20

1 stop15h 25m

£126

LondonFlorence

STN - FLR

STNFLR

London Stansted

Sat 4/10

06:40-17:35

1 stop9h 55m

Florence Peretola

Sat 11/10

11:10-17:45

1 stop7h 35m

£128

LondonFlorence

LGW - FLR

LGWFLR

London Gatwick

Thu 6/11

08:30-16:35

1 stop7h 05m

Florence Peretola

Fri 7/11

07:45-12:10

1 stop5h 25m

£131

LondonFlorence

STN - FLR

STNFLR

London Stansted

Tue 11/11

21:20-09:15

1 stop10h 55m

Florence Peretola

Sat 15/11

07:05-23:10

2 stops17h 05m

£131

LondonFlorence

LGW - FLR

LGWFLR

London Gatwick

Tue 11/11

09:50-22:40

1 stop11h 50m

Florence Peretola

Thu 13/11

09:50-15:10

1 stop6h 20m

£132

Flights are sorted by cheapest return flights first.

Deals found on 16/9

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 60 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 £223). 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

1,185 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

1,185 reviews

Vueling

7.1

Good

1,185 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

1,822 reviews

Vueling

7.1

Good

1,185 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

7,409 reviews

Vueling

7.1

Good

1,185 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

5,159 reviews

Vueling

7.1

Good

1,185 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

7,367 reviews

Vueling

7.1

Good

1,185 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 £114. The distance between London and Siena is about 733 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 (78%), American Airlines (73%) or British Airways (73%) 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 £135, our data shows the cheapest flight currently is £64. When looking at the most popular route, (London Heathrow - Florence Peretola), you can expect to pay £131 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 £223). 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

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Top 8 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£145	FlexibilityNo cancel fee	On-time88%	Search Vueling flights
KLM	Cheapest£83	Average£158	FlexibilityNo cancel fee	On-time75%	Search KLM flights
British Airways	Cheapest£89	Average£242	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Lufthansa	Cheapest£127	Average£185	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
SWISS	Cheapest£135	Average£194	FlexibilityNo cancel fee	On-time79%	Search SWISS flights
Air France	Cheapest£143	Average£217	FlexibilityNo cancel fee	On-time77%	Search Air France flights

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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.

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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.

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Cheap flights from London to Siena from £62

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 28/9. 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 60 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 18 September 2025.

Round-trip from

One-way from

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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 18 September 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 18 September 2025.

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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.

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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 12 September 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 18 September 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

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.

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Alternative routes for London to Siena

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Top 8 airlines flying from London to Siena

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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?

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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 18 September 2025.