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Cheap flights from London to Trieste from £14

LON — TRS
5 Dec — 12 Dec1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London to Trieste Ronchi dei Legionari are usually found in December or November, booked 20 days in advance, depart on a Wednesday or Saturday and return on a Monday

Cheap flight deals from London to Trieste

Enter your travel dates to find the best prices.

Cheapest flights from London to Trieste

Fri 4/1207:35 -
Nonstop2h 10m
Sat 12/1206:05 -
Nonstop2h 10m
Deal found 2/11£27
Sat 12/1207:40 -
Nonstop2h 10m
Mon 14/1211:45 -
Nonstop2h 10m
Deal found 3/11£30
Sat 28/1107:40 -
Nonstop2h 10m
Mon 30/1111:45 -
Nonstop2h 10m
Deal found 1/11£33
Thu 3/1216:45 -
Nonstop2h 10m
Thu 10/1220:20 -
Nonstop2h 10m
Deal found 2/11£39
Sat 28/1107:40 -
Nonstop2h 10m
Sat 5/1206:05 -
Nonstop2h 10m
Deal found 31/10£48
Sat 12/1207:40 -
Nonstop2h 10m
Mon 14/1214:15 -
1 stop10h 00m
Deal found 3/11£48
Sat 12/1207:40 -
Nonstop2h 10m
Sun 13/1206:45 -
1 stop11h 25m
Deal found 31/10£49
Sat 28/1110:00 -
1 stop8h 40m
Mon 30/1110:45 -
1 stop6h 25m
Deal found 1/11£90
Sat 12/1205:00 -
1 stop15h 25m
Mon 14/1208:55 -
1 stop5h 55m
Deal found 3/11£96
Thu 3/1221:25 -
1 stop11h 35m
Thu 10/1212:20 -
1 stop11h 50m
Deal found 2/11£108
Sat 28/1110:00 -
1 stop8h 40m
Sat 5/1212:55 -
2 stops11h 00m
Deal found 31/10£115
Sat 28/1109:55 -
1 stop8h 45m
Mon 30/1110:45 -
1 stop7h 05m
Deal found 1/11£128

Find flight deals from London to Trieste

Round-trip from

£27

One-way from

£14

Popular in

August

Cheapest in

December

Average price

£62

Good round-trip deal

£94 or less

Good one-way deal

£28 or less
Ryanair
  • Ryanair
  • 4/12-12/12
  • Nonstop
  • 4h 20m total
  • London to Trieste
Search Deals
Ryanair
  • Ryanair
  • 28/11-31/12
  • Nonstop
  • 2h 10m total
  • London to Trieste
Search Deals
Highest demand for flights based on searches. 22% potential increase in price (£23 potential increase over avg. return price).
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Cheapest flight prices on average. 5% potential price decrease (£4 potential savings vs. average return price).
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Average for round-trip flights in November 2026
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Price to beat on a round-trip flight from London (LON) to Trieste Ronchi dei Legionari.
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Price to beat on a one-way flight from London (LON) to Trieste Ronchi dei Legionari.
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Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

LondonTrieste

STN London Stansted - TRS Trieste Ronchi dei Legionari

STNTRS

London Stansted

Sat 21/11

07:40-10:50

Nonstop2h 10m

Trieste Ronchi dei Legionari

Wed 31/12

00:00-00:00

Nonstop0h 00m

£17

LondonTrieste

STN London Stansted - TRS Trieste Ronchi dei Legionari

STNTRS

London Stansted

Tue 29/12

07:35-10:45

Nonstop2h 10m

Trieste Ronchi dei Legionari

Wed 31/12

00:00-00:00

Nonstop0h 00m

£20

LondonTrieste

STN London Stansted - TRS Trieste Ronchi dei Legionari

STNTRS

London Stansted

Thu 12/11

06:45-10:00

1 stop26h 15m

Trieste Ronchi dei Legionari

Wed 31/12

00:00-00:00

Nonstop0h 00m

£45

LondonTrieste

STN London Stansted - TRS Trieste Ronchi dei Legionari

STNTRS

London Stansted

Sat 14/11

20:30-17:05

1 stop19h 35m

Trieste Ronchi dei Legionari

Wed 31/12

00:00-00:00

Nonstop0h 00m

£48

LondonTrieste

STN London Stansted - TRS Trieste Ronchi dei Legionari

STNTRS

London Stansted

Sat 28/11

07:40-10:50

Nonstop2h 10m

Trieste Ronchi dei Legionari

Sat 5/12

06:05-07:15

Nonstop2h 10m

£48

LondonTrieste

STN London Stansted - TRS Trieste Ronchi dei Legionari

STNTRS

London Stansted

Sun 15/11

06:30-17:50

1 stop10h 20m

Trieste Ronchi dei Legionari

Wed 31/12

00:00-00:00

Nonstop0h 00m

£48

LondonTrieste

STN London Stansted - TRS Trieste Ronchi dei Legionari

STNTRS

London Stansted

Wed 30/12

11:15-14:25

Nonstop2h 10m

Trieste Ronchi dei Legionari

Fri 15/1

06:00-07:10

Nonstop2h 10m

£48

LondonTrieste

STN London Stansted - TRS Trieste Ronchi dei Legionari

STNTRS

London Stansted

Fri 20/11

08:10-14:20

1 stop29h 10m

Trieste Ronchi dei Legionari

Wed 31/12

00:00-00:00

Nonstop0h 00m

£50

LondonTrieste

STN London Stansted - TRS Trieste Ronchi dei Legionari

STNTRS

London Stansted

Sat 12/12

07:40-10:50

Nonstop2h 10m

Trieste Ronchi dei Legionari

Mon 14/12

06:30-16:25

1 stop10h 55m

£50

LondonTrieste

STN London Stansted - TRS Trieste Ronchi dei Legionari

STNTRS

London Stansted

Sat 13/3

07:40-10:50

Nonstop2h 10m

Trieste Ronchi dei Legionari

Fri 19/3

06:00-07:10

Nonstop2h 10m

£52

Flights are sorted by cheapest return flights first.

Deals found on 31/10

Showing 1-10 of 55 resultsSorted by cheapest first
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Best time to book a flight from London to Trieste

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

Cheapflights Insights

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

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

Currently, November is the cheapest month in which you can book a flight from London to Trieste (average of £65). Flying from London to Trieste in February is currently the most expensive (average of £153). 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 TRS?

It’s typically best to fly out from London to Trieste in the afternoon. Doing so could potentially save you 45% on the flight price compared to flying at midday, which is usually more expensive.

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

Airfare is below average for this route at the moment.
London to Trieste flights typically cost between £39 and £65 in December.
The cheapest return price found within the last 5 days was £27 on Ryanair (4 Dec–12 Dec).

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

The price you pay for your flight from London to Trieste may vary depending on when you book. For the best chance of a lower fare, look to book 17 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing Trieste

Get a feel of what it's like to fly with Ryanair and Lufthansa from London to Trieste by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Ryanair
6.9
Okay
5,450 reviews
Check prices

Food

6.0

Crew

7.5

Boarding

6.7

Entertainment

5.7

Overall

6.9

Comfort

6.5

Reviews

1 / 20
2.0
Mediocre

Nadia,Mar 2026

STN - TLL

Terrible they overbooked a didn't let 2 of our friends on, absolute shambles
Ryanair
6.9
Okay
5,450 reviews
Ryanair
6.9
Okay
5,450 reviews
Check prices

Food

6.0

Crew

7.5

Boarding

6.7

Entertainment

5.7

Overall

6.9

Comfort

6.5

Reviews

1 / 20
2.0
Mediocre

Nadia,Mar 2026

STN - TLL

Terrible they overbooked a didn't let 2 of our friends on, absolute shambles
Lufthansa
6.8
Okay
8,299 reviews
Ryanair
6.9
Okay
5,450 reviews
Check prices

Food

6.0

Crew

7.5

Boarding

6.7

Entertainment

5.7

Overall

6.9

Comfort

6.5

Reviews

1 / 20
2.0
Mediocre

Nadia,Mar 2026

STN - TLL

Terrible they overbooked a didn't let 2 of our friends on, absolute shambles

Related info for your journey

  • What airport do you fly into for flights to Trieste from London?

    If you book a flight to Trieste from London, you will be flying to Ronchi dei Legionari, which is the city’s only airport. Trieste Ronchi dei Legionari (TRS) is located 18.2 mi from the center of Trieste. There are 0 flights from London to Ronchi dei Legionari per day from 3 different airlines.

  • How long is the flight from London to Trieste?

    Ryanair can get you from London to Trieste in just under 2h 10m. Your travel time will be generally consistent. Airlines will cover a distance of 731 mi. All flights are typically direct.

  • What are the cheapest airlines flying from London to Trieste round-trip?

    Cheapflights users have booked flights from London to Trieste round-trip from £41. Other airlines that can offer you cheap pricing are ITA Airways, from £77, and Lufthansa, from £167. Ryanair is 60% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the most popular routes from London to Trieste?

    While some choose either London Stansted - Trieste Ronchi dei Legionari or London Gatwick - Trieste Ronchi dei Legionari, London Heathrow - Trieste Ronchi dei Legionari is the most popular route from London to Trieste.

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

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

  • How can I find direct flights from London to Trieste?

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

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

    Yes. Cheapflights offers flight deals from London to Trieste 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 Trieste?

    Currently, November is the cheapest month in which you can book a flight from London to Trieste (average of £65). Flying from London to Trieste in February is currently the most expensive (average of £153). 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

Travelling to a place near Trieste?

Book flights to Trieste if you plan to visit one of these locations
Udine

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from London to Trieste

AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£41Average£116FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
ITA AirwaysCheapest£77Average£203FlexibilityNo cancel feeOn-time81%
Search ITA Airways flights
LufthansaCheapest£167Average£247FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

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Yes, Cheapflights offers price alerts on London to Trieste 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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