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Trieste

$153+ 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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.
LON — TRS
ago. 18 — ago. 251
lun. 8/18
lun. 8/25
1 adult, Economy
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Cheapflights Tip: The best prices from London to Trieste Ronchi dei Legionari are usually found in November or April, 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 agosto 13, 2025.

Round-trip from

$172
(Mytrip)

One-way from

$153
(ITA Airways)

Popular in

December

Cheapest in

November

Average price

$272
From London (LON) to Trieste Ronchi dei Legionari
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One-way flight from London (LON) to Trieste Ronchi dei Legionari
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Highest demand for flights based on searches. 4% potential increase in price ($7 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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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 agosto 13, 2025.

This Mytrip deal was found by Cheapflights users on 8/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/267:40 amLCY - TRS
1 stop12h 15mITA Airways
vie. 10/37:55 amTRS - LCY
1 stop9h 00mITA Airways
Deal found 8/12$172
This Lufthansa deal was found by Cheapflights users on 8/12. 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. 9/263:30 pmLHR - TRS
1 stop5h 55mLufthansa
vie. 10/32:45 pmTRS - LHR
1 stop8h 25mLufthansa
Deal found 8/12$234
This Lufthansa deal was found by Cheapflights users on 8/12. 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. 10/33:30 pmLHR - TRS
1 stop5h 55mLufthansa
jue. 10/92:45 pmTRS - LHR
1 stop4h 55mLufthansa
Deal found 8/12$235
This Lufthansa deal was found by Cheapflights users on 8/13. 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. 10/33:30 pmLHR - TRS
1 stop5h 55mLufthansa
vie. 10/102:45 pmTRS - LHR
1 stop6h 55mLufthansa
Deal found 8/13$236
This Lufthansa deal was found by Cheapflights users on 8/12. 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. 9/54:30 pmLHR - TRS
1 stop4h 55mLufthansa
lun. 9/152:45 pmTRS - LHR
1 stop6h 55mLufthansa
Deal found 8/12$249
This Lufthansa deal was found by Cheapflights users on 8/12. 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.
sáb. 8/3010:30 amLHR - TRS
1 stop10h 55mLufthansa
sáb. 9/66:30 amTRS - LHR
1 stop12h 10mLufthansa
Deal found 8/12$271
This Lufthansa deal was found by Cheapflights users on 8/12. 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.
sáb. 9/63:30 pmLHR - TRS
1 stop5h 55mLufthansa
sáb. 9/136:30 amTRS - LHR
1 stop9h 10mLufthansa
Deal found 8/12$276
This Lufthansa deal was found by Cheapflights users on 8/12. 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.
jue. 8/2811:30 amLHR - TRS
1 stop10h 05mLufthansa
sáb. 9/66:30 amTRS - LHR
1 stop12h 10mLufthansa
Deal found 8/12$285
This oojo deal was found by Cheapflights users on 8/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/54:50 pmLCY - TRS
1 stop5h 05mITA Airways
dom. 9/711:15 amTRS - LCY
2 stops10h 50mITA Airways
Deal found 8/12$331
This Lufthansa deal was found by Cheapflights users on 8/12. 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. 8/204:30 pmLHR - TRS
1 stop5h 05mLufthansa
mié. 8/276:30 amTRS - LHR
1 stop11h 10mLufthansa
Deal found 8/12$379
This Lufthansa deal was found by Cheapflights users on 8/12. 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. 11/73:40 pmLHR - TRS
2 stops5h 55mLufthansa
dom. 11/92:45 pmTRS - LHR
2 stops9h 10mLufthansa
Deal found 8/12$408
This Lufthansa deal was found by Cheapflights users on 8/12. 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.
sáb. 8/309:30 amLHR - TRS
1 stop11h 55mLufthansa
lun. 9/86:30 amTRS - LHR
1 stop11h 10mLufthansa
Deal found 8/12$411

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 agosto 13, 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

vie. 9/26

7:40 am-8:55 pm

1 stop12h 15m

Trieste Ronchi dei Legionari

vie. 10/3

7:55 am-3:55 pm

1 stop9h 00m

$172

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

jue. 9/4

4:30 pm-10:35 pm

1 stop5h 05m

Trieste Ronchi dei Legionari

lun. 9/15

2:45 pm-6:40 pm

1 stop4h 55m

$234

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

vie. 10/3

4:30 pm-10:25 pm

1 stop4h 55m

Trieste Ronchi dei Legionari

jue. 10/9

2:45 pm-8:40 pm

1 stop6h 55m

$234

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

lun. 9/1

10:30 am-10:35 pm

1 stop11h 05m

Trieste Ronchi dei Legionari

mar. 9/9

6:30 am-9:40 am

1 stop4h 10m

$234

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

jue. 9/11

10:30 am-10:35 pm

1 stop11h 05m

Trieste Ronchi dei Legionari

jue. 9/18

6:30 am-9:40 am

1 stop4h 10m

$234

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

jue. 9/4

4:30 pm-10:35 pm

1 stop5h 05m

Trieste Ronchi dei Legionari

sáb. 9/13

6:30 am-2:40 pm

1 stop9h 10m

$234

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

vie. 9/26

3:30 pm-10:25 pm

1 stop5h 55m

Trieste Ronchi dei Legionari

vie. 10/3

2:45 pm-10:10 pm

1 stop8h 25m

$234

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

vie. 10/3

4:30 pm-10:25 pm

1 stop4h 55m

Trieste Ronchi dei Legionari

mié. 10/8

2:45 pm-10:10 pm

1 stop8h 25m

$235

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

dom. 9/14

8:30 am-10:25 pm

1 stop12h 55m

Trieste Ronchi dei Legionari

jue. 9/18

6:30 am-9:40 am

1 stop4h 10m

$235

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

mié. 10/1

9:30 am-10:35 pm

1 stop12h 05m

Trieste Ronchi dei Legionari

sáb. 10/4

6:30 am-5:40 pm

1 stop12h 10m

$235

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/11

Showing 1-10 of 31 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 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 August 8, 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 agosto 13, 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 in the afternoon, 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 agosto 13, 2025.
Peruse reviews from past customers who have flown with Ryanair 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.
Ryanair
6.8
Okay
5,153 reviews

Boarding

6.7

Comfort

6.5

Entertainment

5.6

Food

6.0

Crew

7.5

Overall

6.8

Reviews

1 / 20
8.0
Excellent

Chris,Mar 2025

BRS - SOF

No real entertainment but I want expecting any tbh so not really a negative. Flight was smooth, quick and bag drop and boarding smooth and simple. Staff were friendly.
Ryanair
6.8
Okay
5,153 reviews
Ryanair
6.8
Okay
5,153 reviews

Boarding

6.7

Comfort

6.5

Entertainment

5.6

Food

6.0

Crew

7.5

Overall

6.8

Reviews

1 / 20
8.0
Excellent

Chris,Mar 2025

BRS - SOF

No real entertainment but I want expecting any tbh so not really a negative. Flight was smooth, quick and bag drop and boarding smooth and simple. Staff were friendly.

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 ($172), and Lufthansa ($234) offers the cheapest pricing from London to Trieste. Users have found that ITA Airways is 6% cheaper than the other options available to this destination.

  • 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

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