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Cheap flights from London to Trieste from £23

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 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
LON — TRS
16 Jul — 23 Jul1
1 adult

Cheapflights Tip: The best prices from London to Trieste Ronchi dei Legionari are usually found in February or November, booked 42 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from London to Trieste

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Trieste (TRS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 11 July 2025.

Round-trip from

£94

One-way from

£23

Popular in

December

Cheapest in

February

Average price

£158

Good round-trip deal

£145 or less

Good one-way deal

£57 or less
Ryanair
  • Ryanair
  • 26/8-29/8
  • Nonstop
  • 4h 15m total
  • London to Trieste
Ryanair
  • Ryanair
  • 11/10
  • Nonstop
  • 2h 05m total
  • London to Trieste
Highest demand for flights based on searches. 7% potential increase in price (£8 potential increase over avg. return price).
Cheapest flight prices on average. 10% potential price decrease (£10 potential savings vs. average return price).
Average for round-trip flights in July 2025
Price to beat on a round-trip flight from London (LON) to Trieste Ronchi dei Legionari.
Price to beat on a one-way flight from London (LON) to Trieste Ronchi dei Legionari.

Find flight deals from London to Trieste

Cheapest flights from London to Trieste
Explore the most affordable flight options available from London to Trieste. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.

Tue 26/807:35STN - TRS
Nonstop2h 05mRyanair
Fri 29/814:00TRS - STN
Nonstop2h 10mRyanair
Deal found 10/7£94
Thu 11/919:45STN - TRS
Nonstop2h 05mMultiple Airlines
Tue 16/912:55TRS - STN
2 stops9h 15mMultiple Airlines
Deal found 10/7£97
Fri 12/919:15LTN - TRS
1 stop15h 55mMultiple Airlines
Fri 19/921:45TRS - LTN
1 stop11h 00mMultiple Airlines
Deal found 9/7£118
Fri 12/907:40LCY - TRS
1 stop12h 15mITA Airways
Fri 19/919:25TRS - LCY
1 stop15h 40mITA Airways
Deal found 9/7£118
Fri 12/909:15LGW - TRS
2 stops25h 55mMultiple Airlines
Fri 19/910:00TRS - LGW
1 stop10h 45mMultiple Airlines
Deal found 9/7£136
Fri 8/807:30LHR - TRS
1 stop13h 55mLufthansa
Sat 23/806:30TRS - LHR
1 stop13h 10mLufthansa
Deal found 10/7£166
Thu 11/912:05LGW - TRS
1 stop5h 30mITA Airways
Wed 17/906:35TRS - LGW
1 stop5h 40mITA Airways
Deal found 10/7£180
Wed 23/708:45LCY - TRS
1 stop4h 20mLufthansa
Sun 27/706:30TRS - LCY
1 stop11h 45mLufthansa
Deal found 9/7£193
Sat 23/822:10LTN - TRS
2 stops14h 45mRyanair
Sat 30/812:20TRS - LTN
1 stop10h 25mRyanair
Deal found 9/7£216
Sat 23/820:20LGW - TRS
2 stops16h 35mRyanair
Sat 30/812:20TRS - LGW
1 stop7h 35mRyanair
Deal found 9/7£217
Fri 12/908:05LHR - TRS
2 stops13h 20mMultiple Airlines
Fri 19/914:45TRS - LHR
2 stops18h 20mMultiple Airlines
Deal found 9/7£239
Tue 26/820:55LHR - TRS
2 stops20h 35mKLM
Fri 29/806:35TRS - LHR
2 stops26h 05mKLM
Deal found 10/7£255

Cheapflights Fare Finder

Customise your flight search to find flights from London to Trieste that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 11 July 2025.
Use the filters below to find and compare flights from London to Trieste that are best for you.

Fly from

London

Fly to

Trieste

Route

Depart

Return

Price

LondonTrieste

STN - TRS

STNTRS

London Stansted

Tue 26/8

07:35-10:40

Nonstop2h 05m

Trieste Ronchi dei Legionari

Fri 29/8

14:00-15:10

Nonstop2h 10m

£94

LondonTrieste

STN - TRS

STNTRS

London Stansted

Thu 11/9

19:45-22:50

Nonstop2h 05m

Trieste Ronchi dei Legionari

Tue 16/9

12:55-21:10

2 stops9h 15m

£97

LondonTrieste

LTN - TRS

LTNTRS

London Luton

Fri 12/9

19:15-12:10

1 stop15h 55m

Trieste Ronchi dei Legionari

Fri 19/9

21:45-07:45

1 stop11h 00m

£118

LondonTrieste

LCY - TRS

LCYTRS

London City

Fri 12/9

07:40-20:55

1 stop12h 15m

Trieste Ronchi dei Legionari

Fri 19/9

19:25-10:05

1 stop15h 40m

£118

LondonTrieste

LGW - TRS

LGWTRS

London Gatwick

Fri 12/9

09:15-12:10

2 stops25h 55m

Trieste Ronchi dei Legionari

Fri 19/9

10:00-19:45

1 stop10h 45m

£136

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Fri 8/8

07:30-22:25

1 stop13h 55m

Trieste Ronchi dei Legionari

Sat 23/8

06:30-18:40

1 stop13h 10m

£166

LondonTrieste

LGW - TRS

LGWTRS

London Gatwick

Thu 11/9

12:05-18:35

1 stop5h 30m

Trieste Ronchi dei Legionari

Wed 17/9

06:35-11:15

1 stop5h 40m

£180

LondonTrieste

LCY - TRS

LCYTRS

London City

Wed 23/7

08:45-14:05

1 stop4h 20m

Trieste Ronchi dei Legionari

Sun 27/7

06:30-17:15

1 stop11h 45m

£193

LondonTrieste

LTN - TRS

LTNTRS

London Luton

Sat 23/8

22:10-13:55

2 stops14h 45m

Trieste Ronchi dei Legionari

Sat 30/8

12:20-21:45

1 stop10h 25m

£216

LondonTrieste

LGW - TRS

LGWTRS

London Gatwick

Sat 23/8

20:20-13:55

2 stops16h 35m

Trieste Ronchi dei Legionari

Sat 30/8

12:20-18:55

1 stop7h 35m

£217

Flights are sorted by cheapest return flights first.

Deals found on 11/7

Showing 1-10 of 27 results
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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
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 Trieste

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

Use this chart to determine the optimal time to book a return flight from London to Trieste. Price data was last updated on 27 June 2025.

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 42 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Find hourly flight availability from London to Trieste. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 July 2025.

It’s typically best to fly out from London to Trieste at midday. Doing so could potentially save you 40% on the flight price compared to flying in the afternoon, which is usually more expensive.

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

Reviews of airlines servicing Trieste

Get insights into the airlines that provide service to Trieste. 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 Trieste. Reviews last updated 11 July 2025.
Get a feel of what it's like to fly with KLM, Ryanair, andLufthansa 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.

Boarding

7.8

Food

7.3

Comfort

7.7

Crew

8.4

Overall

7.8

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Boarding

7.8

Food

7.3

Comfort

7.7

Crew

8.4

Overall

7.8

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Boarding

7.8

Food

7.3

Comfort

7.7

Crew

8.4

Overall

7.8

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Boarding

7.8

Food

7.3

Comfort

7.7

Crew

8.4

Overall

7.8

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Boarding

7.8

Food

7.3

Comfort

7.7

Crew

8.4

Overall

7.8

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Boarding

7.8

Food

7.3

Comfort

7.7

Crew

8.4

Overall

7.8

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Related info for your journey

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

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

    Cheapflights users have booked flights from London to Trieste round-trip from £94. Other airlines that can offer you cheap pricing are ITA Airways, from £118, and Lufthansa, from £166. Ryanair is 32% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from London to Trieste one-way?

    £23 is the cheapest one-way deal found within the past few days, from Ryanair. You may also be able to find cheap deals on Wizz Air and ITA Airways, with prices starting from £66 and £86, respectively.

  • What are the most popular routes 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.

See more FAQs

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Top 2 airlines flying from London to Trieste

Discover the top 2 airlines that operate flights from London to Trieste. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 11 July 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£30Average£92FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
LufthansaCheapest£144Average£220FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

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

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to Trieste flexibly with Cheapflights today.

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

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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