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Cheap flights from Trieste to London from £77

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Trieste to London departing on 23/9. 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 Trieste to London (TRS-LHR)

Cheap return flights

Lufthansa Logo
06:30 - 15:40TRS-LHR
10h 10m1 stop
Lufthansa Logo
11:30 - 22:25LHR-TRS
9h 55m1 stop
£164Lufthansa
Find Deal
Sat, 27 Sep - Sat, 4 Oct
Lufthansa Logo
06:30 - 09:40TRS-LHR
4h 10m1 stop
Lufthansa Logo
09:30 - 22:25LHR-TRS
11h 55m1 stop
£165Lufthansa
Find Deal
Tue, 9 Sep - Sat, 13 Sep
Lufthansa Logo
06:30 - 09:40TRS-LHR
4h 10m1 stop
Lufthansa Logo
15:30 - 22:25LHR-TRS
5h 55m1 stop
£167Lufthansa
Find Deal
Sat, 20 Sep - Tue, 23 Sep
Lufthansa Logo
06:30 - 09:40TRS-LHR
4h 10m1 stop
Lufthansa Logo
08:30 - 22:35LHR-TRS
13h 05m1 stop
£167Lufthansa
Find Deal
Thu, 16 Oct - Mon, 20 Oct
Lufthansa Logo
14:45 - 18:40TRS-LHR
4h 55m1 stop
Lufthansa Logo
08:30 - 22:25LHR-TRS
12h 55m1 stop
£170Lufthansa
Find Deal
Thu, 25 Sep - Sun, 28 Sep
Lufthansa Logo
14:45 - 18:40TRS-LHR
4h 55m1 stop
Lufthansa Logo
16:30 - 22:25LHR-TRS
4h 55m1 stop
£171Lufthansa
Find Deal
Fri, 26 Sep - Fri, 3 Oct
Logo
06:30 - 14:40TRS-LHR
9h 10m1 stop
Logo
16:30 - 22:25LHR-TRS
4h 55m1 stop
£226
Find Deal
Sat, 20 Sep - Sat, 27 Sep
KLM Logo
15:15 - 07:40TRS-LHR
17h 25m2 stops
KLM Logo
20:55 - 18:35LHR-TRS
20h 40m2 stops
£268KLM
Find Deal
Thu, 16 Oct - Mon, 20 Oct
KLM Logo
15:15 - 07:40TRS-LHR
17h 25m2 stops
KLM Logo
11:45 - 22:55LHR-TRS
10h 10m2 stops
£296KLM
Find Deal
Fri, 10 Oct - Sun, 12 Oct
KLM Logo
15:15 - 07:40TRS-LHR
17h 25m2 stops
KLM Logo
08:40 - 18:35LHR-TRS
8h 55m2 stops
£319KLM
Find Deal
Fri, 10 Oct - Mon, 13 Oct

KLM flights from Trieste to London Heathrow Airport

Our best KLM deals on Trieste to London Heathrow Airport flight tickets
KLM
16 Oct
TRS15:15Trieste Ronchi dei Legionari
17h 25m
2 stops
LHR07:40London Heathrow
20 Oct
LHR20:55London Heathrow
20h 40m
2 stops
TRS18:35Trieste Ronchi dei Legionari
£268
Find similar
KLM
10 Oct
TRS15:15Trieste Ronchi dei Legionari
17h 25m
2 stops
LHR07:40London Heathrow
12 Oct
LHR11:45London Heathrow
10h 10m
2 stops
TRS22:55Trieste Ronchi dei Legionari
£296
Find similar
KLM
10 Oct
TRS15:15Trieste Ronchi dei Legionari
17h 25m
2 stops
LHR07:40London Heathrow
13 Oct
LHR08:40London Heathrow
8h 55m
2 stops
TRS18:35Trieste Ronchi dei Legionari
£319
Find similar

Lufthansa flights from Trieste to London Heathrow Airport

Our best Lufthansa deals on Trieste to London Heathrow Airport flight tickets
Lufthansa
27 Sept
TRS06:30Trieste Ronchi dei Legionari
10h 10m
1 stop
LHR15:40London Heathrow
4 Oct
LHR11:30London Heathrow
9h 55m
1 stop
TRS22:25Trieste Ronchi dei Legionari
£164
Find similar
Lufthansa
9 Sept
TRS06:30Trieste Ronchi dei Legionari
4h 10m
1 stop
LHR09:40London Heathrow
13 Sept
LHR09:30London Heathrow
11h 55m
1 stop
TRS22:25Trieste Ronchi dei Legionari
£165
Find similar
Lufthansa
20 Sept
TRS06:30Trieste Ronchi dei Legionari
4h 10m
1 stop
LHR09:40London Heathrow
23 Sept
LHR15:30London Heathrow
5h 55m
1 stop
TRS22:25Trieste Ronchi dei Legionari
£167
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Trieste to London Heathrow Airport 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 15 August 2025.
Use the filters below to find and compare flights from Trieste to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Sat 27/9

06:30-15:40

1 stop10h 10m

London Heathrow

Sat 4/10

11:30-22:25

1 stop9h 55m

£164

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Tue 9/9

06:30-09:40

1 stop4h 10m

London Heathrow

Sat 13/9

09:30-22:25

1 stop11h 55m

£165

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Sat 20/9

06:30-09:40

1 stop4h 10m

London Heathrow

Tue 23/9

15:30-22:25

1 stop5h 55m

£167

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Thu 16/10

06:30-09:40

1 stop4h 10m

London Heathrow

Mon 20/10

08:30-22:35

1 stop13h 05m

£167

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Thu 25/9

14:45-18:40

1 stop4h 55m

London Heathrow

Sun 28/9

08:30-22:25

1 stop12h 55m

£170

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Fri 26/9

14:45-18:40

1 stop4h 55m

London Heathrow

Fri 3/10

16:30-22:25

1 stop4h 55m

£171

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Sat 20/9

06:30-14:40

1 stop9h 10m

London Heathrow

Sat 27/9

16:30-22:25

1 stop4h 55m

£226

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Thu 16/10

15:15-07:40

2 stops17h 25m

London Heathrow

Mon 20/10

20:55-18:35

2 stops20h 40m

£268

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Fri 10/10

15:15-07:40

2 stops17h 25m

London Heathrow

Sun 12/10

11:45-22:55

2 stops10h 10m

£296

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Fri 10/10

15:15-07:40

2 stops17h 25m

London Heathrow

Mon 13/10

08:40-18:35

2 stops8h 55m

£319

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 London from

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

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 cheapest airline that flies from Trieste Ronchi dei Legionari to London Heathrow?

Lufthansa and KLM are the most popular carriers operating from Trieste Ronchi dei Legionari to London Heathrow

When to book flights from Trieste to London Heathrow Airport

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

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

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

Best price found

£77

Fastest flight time

4h 05m

Direct flights

None
The best one-way flight to London Heathrow Airport from Trieste in the past 72 hours is £77. The best return flight deal from Trieste to London Heathrow Airport found on momondo in the last 72 hours is £164.
The fastest flight from Trieste to London Heathrow Airport takes 4h 05m
There are no direct flights from Trieste to London Heathrow Airport. Popular non-direct route for this connection is Trieste Ronchi dei Legionari Airport - London Heathrow Airport.
Search flight deals

  • How far is Trieste Ronchi dei Legionari to London Heathrow by plane?

    The distance between Trieste Ronchi dei Legionari and London Heathrow is about 762.4 mi. A reasonable flight in good conditions will take 4h 05m.

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

    Prices for flights from Trieste Ronchi dei Legionari Airport to London Heathrow Airport were last updated today.

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Trieste Ronchi dei Legionari Airport to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The necessary travel and health documents for your London Heathrow Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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Why use momondo?

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

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 London from Trieste.

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

momondo does allow users to show only those flights to London from Trieste which offer a flexible booking policy as well as other useful filters and features.

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

momondo provides multiple filters to help you find the best flight to London from Trieste. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to London from Trieste are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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