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Cheap flights from London Heathrow Airport to Trieste from £70

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 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — TRS
24 Aug — 31 Aug1
1 adult

Cheap flight deals from Heathrow to Trieste

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) 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 19 August 2025.

Round-trip from

£168

One-way from

£70

Popular in

January

Cheapest in

September

Average price

£231
Lufthansa
  • Lufthansa
  • 14/9-25/9
  • 2 total stops
  • 20h 50m total
  • London to Trieste
Search Deals
15/9
  • 15/9
  • 1 total stop
  • 14h 30m total
  • London to Trieste
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£36 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

Find flight deals from Heathrow to Trieste

Cheapest flights from Heathrow to Trieste
Explore the most affordable flight options available from Heathrow to Trieste. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 August 2025.

Wed 1/1011:30LHR - TRS
1 stop10h 05mLufthansa
Wed 8/1006:30TRS - LHR
1 stop7h 10mLufthansa
Deal found 17/8£168
Tue 9/910:30LHR - TRS
1 stop10h 55mLufthansa
Mon 15/914:45TRS - LHR
1 stop6h 55mLufthansa
Deal found 19/8£169
Wed 3/910:30LHR - TRS
1 stop11h 05mLufthansa
Wed 10/906:30TRS - LHR
1 stop11h 10mLufthansa
Deal found 17/8£170
Sat 11/1009:30LHR - TRS
1 stop11h 55mLufthansa
Wed 15/1006:30TRS - LHR
1 stop11h 10mLufthansa
Deal found 18/8£171
Mon 15/909:30LHR - TRS
1 stop12h 05mLufthansa
Fri 19/906:30TRS - LHR
1 stop4h 10mLufthansa
Deal found 17/8£173
Wed 10/911:30LHR - TRS
1 stop10h 05mLufthansa
Sat 13/906:30TRS - LHR
1 stop10h 10mLufthansa
Deal found 19/8£174
Sat 6/908:30LHR - TRS
1 stop12h 55mLufthansa
Mon 15/914:45TRS - LHR
1 stop6h 55mLufthansa
Deal found 19/8£174
Thu 16/1008:30LHR - TRS
1 stop4h 35mLufthansa
Sun 19/1006:30TRS - LHR
1 stop11h 10mLufthansa
Deal found 17/8£182
Fri 10/1013:30LHR - TRS
1 stop7h 55mLufthansa
Wed 15/1006:30TRS - LHR
1 stop7h 10mLufthansa
Deal found 18/8£182
Fri 5/916:30LHR - TRS
1 stop4h 55mLufthansa
Mon 15/914:45TRS - LHR
1 stop6h 55mLufthansa
Deal found 18/8£184
Mon 8/916:30LHR - TRS
1 stop5h 05mLufthansa
Sat 13/906:30TRS - LHR
1 stop13h 10mLufthansa
Deal found 19/8£185
Fri 5/916:30LHR - TRS
1 stop4h 55mLufthansa
Sat 13/906:30TRS - LHR
1 stop10h 10mLufthansa
Deal found 19/8£185

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow 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 19 August 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Trieste that are best for you.

Fly from

Heathrow

Fly to

Trieste

Route

Depart

Return

Price

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Wed 1/10

11:30-22:35

1 stop10h 05m

Trieste Ronchi dei Legionari

Wed 8/10

06:30-12:40

1 stop7h 10m

£168

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Tue 9/9

10:30-22:25

1 stop10h 55m

Trieste Ronchi dei Legionari

Mon 15/9

14:45-20:40

1 stop6h 55m

£169

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Thu 18/9

10:30-22:35

1 stop11h 05m

Trieste Ronchi dei Legionari

Thu 25/9

14:45-22:10

1 stop8h 25m

£170

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Wed 3/9

10:30-22:35

1 stop11h 05m

Trieste Ronchi dei Legionari

Wed 10/9

06:30-16:40

1 stop11h 10m

£170

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Sat 11/10

09:30-22:25

1 stop11h 55m

Trieste Ronchi dei Legionari

Wed 15/10

06:30-16:40

1 stop11h 10m

£171

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Thu 13/11

17:30-22:40

1 stop4h 10m

Trieste Ronchi dei Legionari

Sat 15/11

15:00-22:20

1 stop8h 20m

£173

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Mon 15/9

09:30-22:35

1 stop12h 05m

Trieste Ronchi dei Legionari

Fri 19/9

06:30-09:40

1 stop4h 10m

£173

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Wed 1/10

09:55-19:45

1 stop8h 50m

Trieste Ronchi dei Legionari

Wed 8/10

15:15-20:05

1 stop5h 50m

£174

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Sat 6/9

08:30-22:25

1 stop12h 55m

Trieste Ronchi dei Legionari

Thu 11/9

14:45-20:40

1 stop6h 55m

£174

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Wed 10/9

11:30-22:35

1 stop10h 05m

Trieste Ronchi dei Legionari

Sat 13/9

06:30-15:40

1 stop10h 10m

£174

Flights are sorted by cheapest return flights first.

Deals found on 19/8

Showing 1-10 of 22 results
1
2
3

Best time to book a flight from Heathrow to Trieste

Have a flexible travel schedule? Discover the best time to fly to Trieste from Heathrow 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 Heathrow Airport to Trieste

What’s the top stopover airport for flights from London Heathrow Airport to Trieste?

Share of one-stop return flights from London Heathrow Airport to Trieste chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Frankfurt am Main (FRA) – chosen by Cheapflights users on 96% of one-stop itineraries from London Heathrow Airport to Trieste on Cheapflights.

What’s the fastest stopover option from London Heathrow Airport to Trieste?

Shortest average travel time for one-stop one-way flights from London Heathrow Airport to Trieste, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Frankfurt am Main (FRA) have the shortest average one-way travel time for one-stop routes: 5h 25m.

What’s the fastest stopover option from London Heathrow Airport to Trieste?

Shortest average travel time for one-stop one-way flights from London Heathrow Airport to Trieste, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Frankfurt am Main (FRA) have the shortest average one-way travel time for one-stop routes: 5h 25m.

Which airport typically offers the quickest stopover for flights from London Heathrow Airport to Trieste?

Average stopover duration for one-stop one-way flights from London Heathrow Airport to Trieste, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Frankfurt am Main (FRA) offer the fastest connection on this route, with an average stopover time of 2h 13m.

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 19 August 2025.
Check out reviews from past customers who have flown with Lufthansa from London Heathrow Airport 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.
Lufthansa
6.8
Okay
7,334 reviews
Check prices

Comfort

6.8

Food

6.3

Overall

6.8

Boarding

7.0

Entertainment

6.4

Crew

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

BHX - FRA

Not as good as when I traveled many years ago. My main problem was missing my flight from Frankfurt to Birmingham because of very late start from LA and was told delay wil be made up but then I had to wait 5 hours for my next booked fight . Asian vegetarian food was skimpy and horrible.
Lufthansa
6.8
Okay
7,334 reviews
Lufthansa
6.8
Okay
7,334 reviews
Check prices

Comfort

6.8

Food

6.3

Overall

6.8

Boarding

7.0

Entertainment

6.4

Crew

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

BHX - FRA

Not as good as when I traveled many years ago. My main problem was missing my flight from Frankfurt to Birmingham because of very late start from LA and was told delay wil be made up but then I had to wait 5 hours for my next booked fight . Asian vegetarian food was skimpy and horrible.

Related info for your journey

Find useful and relevant information for your journey from Heathrow 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 Heathrow?

    If you book a flight to Trieste from London Heathrow, 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 Heathrow to Ronchi dei Legionari per day from 1 airline.

  • How long is the flight from London Heathrow Airport to Trieste?

    There are many flights that can get you from London Heathrow Airport to Trieste in 10h 05m. Fly via Lufthansa to get the fastest option. Airlines will cover a distance of 744 mi.

  • What is the cheapest airline to fly from London Heathrow Airport to Trieste round-trip?

    Flying on Lufthansa is currently your cheapest option to Trieste, with prices starting at £148. This flight start at 35% lower than the current average price 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow 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

Travelling to a place near Trieste?

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

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Top airline flying from Heathrow to Trieste

Discover the top airline that operate flights from Heathrow 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 19 August 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£148Average£228FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Trieste?

Deals for Heathrow to Trieste flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Cheapflights helps you find that perfect flight to Trieste from Heathrow by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Yes, we can. To see specific flights from Heathrow to Trieste with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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