LHR - TRS

£71 Find Cheap Flights from London Heathrow Airport to Trieste – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Trieste departing on 4/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest return fare
£124
ITA Airways
Tue 29/9Sun 4/10
LHR - TRS • 1 stop
Cheapest one-way flight
£71
Multiple Airlines
Fri 4/9
LHR - TRS • 1 stop
Top airlines
Cheapest • from £124 (return)
Best reviews • 6.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
Not available
There are currently no direct flights between Heathrow and Trieste. You’ll need at least 1 connection.
Insights
Insights
Insights
Insights
Top stopover airports
Cheapest • Avg £200 (return)
Shortest trip • 5h 43m (one-way)
Insights
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We hope you love your trip to Trieste!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Heathrow to Trieste (LHR-TRS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Heathrow to Trieste that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Heathrow to Trieste

Tue, 29 Sep - Sun, 4 Oct
ITA Airways Logo
10:30 - 18:30
LHR
-
TRS
7h 00m
1 stop
ITA Airways Logo
11:15 - 15:40
TRS
-
LHR
5h 25m
1 stop
£124ITA Airways
Fri, 9 Oct - Sun, 11 Oct
ITA Airways Logo
16:30 - 10:25
LHR
-
TRS
16h 55m
1 stop
ITA Airways Logo
15:15 - 09:40
TRS
-
LHR
19h 25m
1 stop
£132ITA Airways
Mon, 9 Nov - Fri, 13 Nov
ITA Airways Logo
10:30 - 22:55
LHR
-
TRS
11h 25m
1 stop
ITA Airways Logo
11:15 - 15:40
TRS
-
LHR
5h 25m
1 stop
£134ITA Airways
Mon, 21 Sep - Sun, 27 Sep
ITA Airways Logo
16:30 - 14:30
LHR
-
TRS
21h 00m
1 stop
ITA Airways Logo
11:15 - 09:40
TRS
-
LHR
23h 25m
1 stop
£138ITA Airways
Tue, 6 Oct - Thu, 8 Oct
ITA Airways Logo
10:30 - 22:55
LHR
-
TRS
11h 25m
1 stop
ITA Airways Logo
06:35 - 15:40
TRS
-
LHR
10h 05m
1 stop
£144ITA Airways
Tue, 6 Oct - Thu, 8 Oct
ITA Airways Logo
10:30 - 18:30
LHR
-
TRS
7h 00m
1 stop
ITA Airways Logo
19:15 - 09:40
TRS
-
LHR
15h 25m
1 stop
£145ITA Airways
Mon, 16 Nov - Tue, 17 Nov
ITA Airways Logo
16:30 - 22:55
LHR
-
TRS
5h 25m
1 stop
ITA Airways Logo
11:15 - 15:40
TRS
-
LHR
5h 25m
1 stop
£152ITA Airways
Mon, 16 Nov - Tue, 17 Nov
ITA Airways Logo
10:30 - 14:30
LHR
-
TRS
27h 00m
1 stop
ITA Airways Logo
19:15 - 15:40
TRS
-
LHR
21h 25m
1 stop
£154ITA Airways
Fri, 11 Sep - Sun, 20 Sep
ITA Airways Logo
16:30 - 14:30
LHR
-
TRS
21h 00m
1 stop
ITA Airways Logo
11:15 - 09:40
TRS
-
LHR
23h 25m
1 stop
£164ITA Airways
Mon, 13 Jul - Tue, 21 Jul
ITA Airways Logo
10:30 - 18:30
LHR
-
TRS
7h 00m
1 stop
ITA Airways Logo
11:15 - 15:40
TRS
-
LHR
5h 25m
1 stop
£164ITA Airways
Booking Insights

KAYAK’s insights & trends for Heathrow to Trieste flights

Get data-powered insights and trends into flights from Heathrow to Trieste to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from London Heathrow Airport to Trieste?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 5 days.

In the past 3 days, the cheapest return tickets from London Heathrow Airport to Trieste were found on ITA Airways (£124) and Lufthansa (£199).

Good to know - Cheap tickets from London Heathrow Airport to Trieste

Cheapest flight£71
Flight from London Heathrow Airport to Trieste

When to book flights from Heathrow to Trieste

Are your dates flexible? Find out the best times to travel from Heathrow to Trieste based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking London Heathrow Airport to Trieste flights

  • What is the cheapest flight from London Heathrow Airport to Trieste?

    In the last 3 days, the lowest price for a flight from London Heathrow Airport to Trieste was £71 for a one-way ticket and £124 for a return.

  • Which airports will I be using when flying from London Heathrow Airport to Trieste?

    London Heathrow Airport airport is called London Heathrow and the only airport in Trieste is Trieste Ronchi dei Legionari.

  • Which aircraft models fly most regularly from London Heathrow Airport to Trieste?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from London Heathrow Airport to Trieste?

    Star Alliance is the only airline alliance operating flights between London Heathrow Airport and Trieste.

  • How does KAYAK find such low prices on flights from London Heathrow Airport to Trieste?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London Heathrow Airport to Trieste.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London Heathrow Airport to Trieste?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Trieste from London Heathrow Airport is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London Heathrow Airport to Trieste?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Trieste with an airline and back to London Heathrow Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London Heathrow Airport to Trieste?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Trieste from London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Heathrow to Trieste

 
See real verified KAYAK customer reviews for airlines flying from London to Trieste. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Heathrow to Trieste? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
6.8
LufthansaOverall score based on 8108 reviews
6.8Comfort
7.0Boarding
6.4Entertainment
6.3Food
7.6Crew
Airline reviews

Flight map did not work. Crew was great, food was good, plane took off on time and landed early. That's all I can ask.

10.0 ExcellentThomas, Feb 2026
LHR - EWR
Read more Lufthansa reviews

Flight map did not work. Crew was great, food was good, plane took off on time and landed early. That's all I can ask.

Paid for exit row at the back of the plane. Window seat with lots of leg space. Food was inedible (as usual). Brought my own.

Not what I expected for the last leg of a $5100 business class experience. Boarding was a nightmare. The flight was delayed and I had to keep checking my email to ensure I was at the right gate since the airline or the terminal had no clue until 15 mins prior to boarding. Food was gross, limited drink options.

Flights scheduled with impossible connections - Lufthansa apparently believes it takes 7mins to change terminals, go through passport control, re-clear security and walk 1.8kms…..and everything will work perfectly (which it never does at Frankfurt). No staff on hand to assist with transfers on delayed flights. No transfer guidance provided by app. No compensation offered for 6hr delay to connecting flight.

Crew were friendly and very helpful Plane was clean and the legroom is standard. Overall a good flight, no complaints.

I did not like that they failed to put my luggage on my connecting flight to Athens. I was promised it would be located and delivered within 2 days but later told there was no information on its location. This caused me to have unplanned for expenses because I then had to purchase new clothing to wear on my vacation. I did not receive my luggage until my return flight home. I will not be traveling with them again.

No internet, very narrow seats insufficient room for three passengers with encroachment.

Other than problems with checking in and uploading passport info everything was great. It would be nice to be able to manually input passport info. Often while traveling the bandwidth has problems uploading pictures

Give at least coffee or juice as it is an international flight.

Tiny, cramped seats with minimum leg room and hard armrests. Basic needs like a seat and luggage came with an additional charge. Budget airline amenities with premium airlune cost. I won't use this airline again.

Everything you need to know for your flight from Heathrow to Trieste

Information on your arrival and departure airports