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Cheap flights from London Heathrow Airport to Trieste from £67

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Trieste departing on 3/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from London Heathrow Airport to Trieste

Cheap return flights

Logo
20:50 - 19:45LHR-TRS
21h 55m1 stop
Logo
12:45 - 20:05TRS-LHR
8h 20m1 stop
£160
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Tue, 7 Oct - Tue, 21 Oct
Logo
14:20 - 21:25LHR-TRS
6h 05m1 stop
Logo
15:30 - 20:20TRS-LHR
5h 50m1 stop
£168
Find Deal
Tue, 7 Oct - Tue, 21 Oct
Lufthansa Logo
13:30 - 22:40LHR-TRS
8h 10m1 stop
Lufthansa Logo
14:40 - 22:20TRS-LHR
8h 40m1 stop
£169Lufthansa
Find Deal
Wed, 29 Oct - Wed, 5 Nov
Lufthansa Logo
17:30 - 22:30LHR-TRS
4h 00m1 stop
Lufthansa Logo
14:40 - 20:50TRS-LHR
7h 10m1 stop
£171Lufthansa
Find Deal
Fri, 31 Oct - Tue, 4 Nov
Logo
20:10 - 11:30LHR-TRS
14h 20m1 stop
Logo
15:30 - 20:20TRS-LHR
5h 50m1 stop
£171
Find Deal
Fri, 17 Oct - Tue, 21 Oct
Lufthansa Logo
16:30 - 22:40LHR-TRS
5h 10m1 stop
Lufthansa Logo
06:25 - 14:45TRS-LHR
9h 20m1 stop
£172Lufthansa
Find Deal
Thu, 30 Oct - Thu, 6 Nov
Lufthansa Logo
17:30 - 22:40LHR-TRS
4h 10m1 stop
Lufthansa Logo
14:50 - 18:45TRS-LHR
4h 55m1 stop
£174Lufthansa
Find Deal
Thu, 30 Oct - Thu, 6 Nov
Lufthansa Logo
15:30 - 22:30LHR-TRS
6h 00m1 stop
Lufthansa Logo
06:25 - 09:45TRS-LHR
4h 20m1 stop
£174Lufthansa
Find Deal
Fri, 20 Feb - Fri, 27 Feb
KLM Logo
17:50 - 18:30LHR-TRS
23h 40m2 stops
KLM Logo
15:15 - 10:45TRS-LHR
20h 30m2 stops
£247KLM
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Thu, 11 Dec - Sun, 14 Dec
KLM Logo
06:30 - 22:55LHR-TRS
15h 25m2 stops
KLM Logo
15:15 - 16:05TRS-LHR
25h 50m2 stops
£308KLM
Find Deal
Sun, 14 Dec - Mon, 5 Jan

Lufthansa flights from London Heathrow Airport to Trieste

Our best Lufthansa deals on London Heathrow Airport to Trieste flight tickets
Lufthansa
29 Oct
LHR13:30London Heathrow
8h 10m
1 stop
TRS22:40Trieste Ronchi dei Legionari
5 Nov
TRS14:40Trieste Ronchi dei Legionari
8h 40m
1 stop
LHR22:20London Heathrow
£169
Find similar
Lufthansa
31 Oct
LHR17:30London Heathrow
4h 00m
1 stop
TRS22:30Trieste Ronchi dei Legionari
4 Nov
TRS14:40Trieste Ronchi dei Legionari
7h 10m
1 stop
LHR20:50London Heathrow
£171
Find similar
Lufthansa
30 Oct
LHR16:30London Heathrow
5h 10m
1 stop
TRS22:40Trieste Ronchi dei Legionari
6 Nov
TRS06:25Trieste Ronchi dei Legionari
9h 20m
1 stop
LHR14:45London Heathrow
£172
Find similar

KLM flights from London Heathrow Airport to Trieste

Our best KLM deals on London Heathrow Airport to Trieste flight tickets
KLM
11 Dec
LHR17:50London Heathrow
23h 40m
2 stops
TRS18:30Trieste Ronchi dei Legionari
14 Dec
TRS15:15Trieste Ronchi dei Legionari
20h 30m
2 stops
LHR10:45London Heathrow
£247
Find similar
KLM
14 Dec
LHR06:30London Heathrow
15h 25m
2 stops
TRS22:55Trieste Ronchi dei Legionari
5 Jan
TRS15:15Trieste Ronchi dei Legionari
25h 50m
2 stops
LHR16:05London Heathrow
£308
Find similar
KLM
18 Sept
LHR20:55London Heathrow
16h 35m
2 stops
TRS14:30Trieste Ronchi dei Legionari
20 Sept
TRS15:15Trieste Ronchi dei Legionari
17h 25m
2 stops
LHR07:40London Heathrow
£411
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport 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, momondo users made 279,928 searches. Data last updated 16 September 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Trieste that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Tue 7/10

20:50-19:45

1 stop21h 55m

Trieste Ronchi dei Legionari

Tue 21/10

12:45-20:05

1 stop8h 20m

£160

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Tue 7/10

14:20-21:25

1 stop6h 05m

Trieste Ronchi dei Legionari

Tue 21/10

15:30-20:20

1 stop5h 50m

£168

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Wed 29/10

13:30-22:40

1 stop8h 10m

Trieste Ronchi dei Legionari

Wed 5/11

14:40-22:20

1 stop8h 40m

£169

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Fri 31/10

17:30-22:30

1 stop4h 00m

Trieste Ronchi dei Legionari

Tue 4/11

14:40-20:50

1 stop7h 10m

£171

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Fri 17/10

20:10-11:30

1 stop14h 20m

Trieste Ronchi dei Legionari

Tue 21/10

15:30-20:20

1 stop5h 50m

£171

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Thu 30/10

16:30-22:40

1 stop5h 10m

Trieste Ronchi dei Legionari

Thu 6/11

06:25-14:45

1 stop9h 20m

£172

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Thu 30/10

17:30-22:40

1 stop4h 10m

Trieste Ronchi dei Legionari

Thu 6/11

14:50-18:45

1 stop4h 55m

£174

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Fri 20/2

15:30-22:30

1 stop6h 00m

Trieste Ronchi dei Legionari

Fri 27/2

06:25-09:45

1 stop4h 20m

£174

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Thu 11/12

17:50-18:30

2 stops23h 40m

Trieste Ronchi dei Legionari

Sun 14/12

15:15-10:45

2 stops20h 30m

£247

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Sun 14/12

06:30-22:55

2 stops15h 25m

Trieste Ronchi dei Legionari

Mon 5/1

15:15-16:05

2 stops25h 50m

£308

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Trieste from

How to get the cheapest flight ticket from London Heathrow Airport to Trieste

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between London Heathrow Airport and Trieste?

What is the cheapest month to fly to Trieste?

The month of November is, on average, the cheapest month to fly to Trieste from London Heathrow Airport, with most prices found around £140. The month of September is another great option to travel to Trieste, with average flight prices from London Heathrow Airport averaging around £152.

What is the cheapest day to depart on your flight to Trieste?

On average, the least expensive day to fly to Trieste from London Heathrow Airport is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as £75. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Trieste is Sunday, with ticket prices averaging around £144.

What is the cheapest time of day to depart on your flight to Trieste?

The cheapest time of day to fly to Trieste is at midday when flights can be purchased for as low as £92. Flights to Trieste are more costly in the afternoon, with an average ticket price of £118. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on London Heathrow Airport to Trieste flights?

You could potentially save up to 25% on your flight if you consider stops on a London Heathrow Airport to Trieste flight.

When to book flights from London Heathrow Airport to Trieste

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Trieste according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London Heathrow Airport to Trieste (LHR to TRS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Trieste

Direct flights

None
There are no direct flights from London Heathrow Airport to Trieste. There are no popular flight routes from London Heathrow Airport to Trieste.
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  • How far is London Heathrow to Trieste Ronchi dei Legionari by plane?

    The distance between London Heathrow and Trieste Ronchi dei Legionari is about 762.4 mi. Flights usually cover this in 4h 00m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from London Heathrow Airport to Trieste Ronchi dei Legionari Airport?

    Prices for flights from London Heathrow Airport to Trieste Ronchi dei Legionari Airport are updated daily.

  • How many operators does momondo search for flights from London Heathrow Airport to Trieste Ronchi dei Legionari Airport?

  • How old do you have to be to fly from London Heathrow Airport to Trieste Ronchi dei Legionari Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Trieste Ronchi dei Legionari Airport.

  • What documentation or ID do you need to fly to Trieste Ronchi dei Legionari Airport?

    The required travel and health documents for your Trieste Ronchi dei Legionari Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Trieste Ronchi dei Legionari Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from London Heathrow Airport to Trieste?

Best airlines flying from London Heathrow Airport to Trieste

Compare and see reviews for airlines that fly from London Heathrow Airport to Trieste with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom £148Free CancellationRating
6.8
7,407 reviews
Search Lufthansa flights

Travelling to a place near Trieste?

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

Why use momondo?

Why should I use momondo to find a flight deal from London to Trieste?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Trieste from London.

Can I find flights from London to Trieste with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Trieste from London with this policy.

How can momondo help me find flights from London to Trieste?

Once you have performed a search for London to Trieste flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from London to Trieste right now. Can momondo alert me if prices change?

If you are not ready to book a flight from London to Trieste now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Trieste and let you know when they change.

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Fly your favourite airline to Trieste

Airlines are sorted and displayed according to clicks in the past 7 days on momondo
British Airways
Ryanair
easyJet
Turkish Airlines
Qatar Airways
Emirates
Etihad Airways
Lufthansa
Virgin Atlantic
Pegasus Airlines
KLM
Air India