Trieste

$169+ Cheap flights from London (LON) to Trieste (TRS)

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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
LON — TRS
ago. 5 — ago. 121
We work with more than 300 partners to bring you better travel deals

Find cheap flights from London to Trieste with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from London to Trieste Ronchi dei Legionari are usually found in November or February, booked 42 days in advance, depart on a Wednesday or Monday 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 julio 31, 2025.

Round-trip from

$187
(oojo)

One-way from

$145
(Booking.com)

Popular in

December

Cheapest in

November

Average price

$222
From London (LON) to Trieste Ronchi dei Legionari
One-way flight from London (LON) to Trieste Ronchi dei Legionari
Highest demand for flights based on searches. 3% potential increase in price ($6 potential increase over avg. RT price).
Cheapest flight prices on average. 8% potential price decrease ($15 potential savings vs. average RT price).
Average for round-trip flights in July 2025

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 julio 31, 2025.

This ITA Airways deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure ITA Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/52:10 pmLCY - TRS
1 stop5h 45mITA Airways
mié. 10/157:25 pmTRS - LCY
1 stop15h 40mITA Airways
Deal found 7/29$200
This Lufthansa deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/159:30 amLHR - TRS
1 stop11h 55mLufthansa
mar. 8/196:30 amTRS - LHR
1 stop12h 10mLufthansa
Deal found 7/31$232
This Lufthansa deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/65:00 pmLCY - TRS
1 stop4h 35mLufthansa
dom. 8/106:30 amTRS - LCY
1 stop11h 45mLufthansa
Deal found 7/31$257
This Air Dolomiti deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Dolomiti is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/158:55 amLCY - TRS
1 stop12h 30mAir Dolomiti
dom. 8/176:30 amTRS - LCY
1 stop26h 40mAir Dolomiti
Deal found 7/31$305
This KLM deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/278:40 amLHR - TRS
2 stops8h 50mKLM
mié. 9/176:35 amTRS - LHR
2 stops10h 40mKLM
Deal found 7/30$371
This KLM deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/29:55 amLHR - TRS
2 stops7h 40mMultiple Airlines
sáb. 9/2011:15 amTRS - LHR
2 stops11h 10mMultiple Airlines
Deal found 7/30$508
This KLM deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/28:40 amLCY - TRS
2 stops8h 55mKLM
vie. 9/196:35 amTRS - LCY
2 stops11h 05mKLM
Deal found 7/30$534

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated julio 31, 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

LCY - TRS

LCYTRS

London City

dom. 10/5

7:15 pm-10:50 am

1 stop14h 35m

Trieste Ronchi dei Legionari

lun. 10/13

7:25 pm-10:05 am

1 stop15h 40m

$200

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

vie. 8/15

9:30 am-10:25 pm

1 stop11h 55m

Trieste Ronchi dei Legionari

mar. 8/19

6:30 am-5:40 pm

1 stop12h 10m

$232

LondonTrieste

LCY - TRS

LCYTRS

London City

vie. 8/15

8:55 am-2:05 pm

1 stop4h 10m

Trieste Ronchi dei Legionari

mié. 8/20

2:45 pm-6:35 pm

1 stop4h 50m

$257

LondonTrieste

LCY - TRS

LCYTRS

London City

vie. 8/15

8:55 am-10:25 pm

1 stop12h 30m

Trieste Ronchi dei Legionari

dom. 8/17

6:30 am-8:10 am

1 stop26h 40m

$305

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

mié. 8/27

8:40 am-6:30 pm

2 stops8h 50m

Trieste Ronchi dei Legionari

mié. 9/17

6:35 am-4:15 pm

2 stops10h 40m

$371

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

mar. 9/2

9:55 am-6:35 pm

2 stops7h 40m

Trieste Ronchi dei Legionari

sáb. 9/20

11:15 am-9:25 pm

2 stops11h 10m

$508

LondonTrieste

LCY - TRS

LCYTRS

London City

mar. 9/2

8:40 am-6:35 pm

2 stops8h 55m

Trieste Ronchi dei Legionari

vie. 9/19

6:35 am-4:40 pm

2 stops11h 05m

$534

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

jue. 9/4

6:15 am-12:30 pm

1 stop5h 15m

$169

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

mié. 11/26

3:30 pm-10:35 pm

1 stop6h 05m

$182

LondonTrieste

LCY - TRS

LCYTRS

London City

jue. 9/4

8:45 am-10:35 pm

1 stop12h 50m

$192

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 12 results
1
2

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 round-trip 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 round-trip flight from London to Trieste. Price data was last updated on July 25, 2025.

The best time to book flights from London to Trieste is 42 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 julio 31, 2025.

It’s typically best to fly out from London to Trieste in the morning. Doing so could potentially save you 9% on the flight price compared to flying at noon, which is usually more expensive.

How much does it cost to fly round-trip 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 julio 31, 2025.
Peruse reviews from past customers who have flown with KLM, Austrian Airlines, and Lufthansa from London to Trieste 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.

Comfort

7.7

Crew

8.4

Food

7.3

Overall

7.8

Boarding

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.

Comfort

7.7

Crew

8.4

Food

7.3

Overall

7.8

Boarding

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.

Comfort

7.7

Crew

8.4

Food

7.3

Overall

7.8

Boarding

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.

Comfort

7.7

Crew

8.4

Food

7.3

Overall

7.8

Boarding

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.

Comfort

7.7

Crew

8.4

Food

7.3

Overall

7.8

Boarding

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?

    Most people fly into Trieste Ronchi dei Legionari (TRS) if they book a flight to Trieste from London. On average, Ronchi dei Legionari has 0 inbound flights from London per day from 0 airlines. Trieste Ronchi dei Legionari is conveniently located just 18.2 mi from Trieste’s city center.

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

    According to our current data, ITA Airways ($187), Lufthansa ($232), and Air Dolomiti ($275) offers the cheapest pricing from London to Trieste.

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

    The cheapest airline one-way is ITA Airways, with whom users have recently found tickets for as low as $145. However, be on the lookout for offers from Lufthansa and Austrian Airlines, as they are both options that can get you from London to Trieste for a low price.

  • 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 vacation 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

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 Trieste

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

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.