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Cheap flights from London Heathrow Airport to Trieste from £74

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 15/11. 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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Cheap return flights

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Lufthansa Logo
07:30 - 14:05LHR-TRS
5h 35m1 stop
Lufthansa Logo
15:00 - 20:50TRS-LHR
6h 50m1 stop
£169Lufthansa
Find Deal
lør., 29 nov. - lør., 6 dec.
Lufthansa Logo
07:30 - 14:05LHR-TRS
5h 35m1 stop
Lufthansa Logo
15:00 - 20:50TRS-LHR
6h 50m1 stop
£170Lufthansa
Find Deal
lør., 29 nov. - lør., 6 dec.
Lufthansa Logo
07:30 - 14:05LHR-TRS
5h 35m1 stop
Lufthansa Logo
06:25 - 10:45TRS-LHR
5h 20m1 stop
£171Lufthansa
Find Deal
søn., 16 nov. - lør., 22 nov.
Lufthansa Logo
07:30 - 14:05LHR-TRS
5h 35m1 stop
Lufthansa Logo
15:00 - 18:45TRS-LHR
4h 45m1 stop
£174Lufthansa
Find Deal
søn., 30 nov. - søn., 7 dec.
Multiple Airlines Logo
09:55 - 18:50LHR-TRS
7h 55m1 stop
Multiple Airlines Logo
06:35 - 18:00TRS-LHR
12h 25m2 stops
£185Multiple Airlines
Find Deal
ons., 12 nov. - ons., 19 nov.
Lufthansa Logo
20:15 - 14:05LHR-TRS
16h 50m2 stops
Lufthansa Logo
06:25 - 14:45TRS-LHR
9h 20m1 stop
£191Lufthansa
Find Deal
lør., 29 nov. - lør., 6 dec.
Lufthansa Logo
19:30 - 14:05LHR-TRS
17h 35m1 stop
Lufthansa Logo
14:40 - 22:20TRS-LHR
8h 40m1 stop
£193Lufthansa
Find Deal
ons., 12 nov. - ons., 19 nov.
KLM Logo
06:30 - 18:30LHR-TRS
11h 00m2 stops
KLM Logo
15:15 - 10:45TRS-LHR
20h 30m2 stops
£310KLM
Find Deal
søn., 30 nov. - søn., 7 dec.
KLM Logo
20:25 - 18:30LHR-TRS
21h 05m2 stops
KLM Logo
06:35 - 20:50TRS-LHR
15h 15m2 stops
£313KLM
Find Deal
man., 16 feb. - man., 23 feb.
KLM Logo
17:50 - 14:30LHR-TRS
19h 40m2 stops
KLM Logo
06:35 - 16:05TRS-LHR
10h 30m2 stops
£355KLM
Find Deal
lør., 15 nov. - man., 17 nov.

Lufthansa flights from London Heathrow Airport to Trieste

Our best Lufthansa deals on London Heathrow Airport to Trieste flight tickets
Lufthansa
29 Nov
LHR07:30London Heathrow
5h 35m
1 stop
TRS14:05Trieste Ronchi dei Legionari
6 Dec
TRS15:00Trieste Ronchi dei Legionari
6h 50m
1 stop
LHR20:50London Heathrow
£169
Find similar
Lufthansa
29 Nov
LHR07:30London Heathrow
5h 35m
1 stop
TRS14:05Trieste Ronchi dei Legionari
6 Dec
TRS15:00Trieste Ronchi dei Legionari
6h 50m
1 stop
LHR20:50London Heathrow
£170
Find similar
Lufthansa
16 Nov
LHR07:30London Heathrow
5h 35m
1 stop
TRS14:05Trieste Ronchi dei Legionari
22 Nov
TRS06:25Trieste Ronchi dei Legionari
5h 20m
1 stop
LHR10:45London Heathrow
£171
Find similar

KLM flights from London Heathrow Airport to Trieste

Our best KLM deals on London Heathrow Airport to Trieste flight tickets
KLM
30 Nov
LHR06:30London Heathrow
11h 00m
2 stops
TRS18:30Trieste Ronchi dei Legionari
7 Dec
TRS15:15Trieste Ronchi dei Legionari
20h 30m
2 stops
LHR10:45London Heathrow
£310
Find similar
KLM
16 Feb
LHR20:25London Heathrow
21h 05m
2 stops
TRS18:30Trieste Ronchi dei Legionari
23 Feb
TRS06:35Trieste Ronchi dei Legionari
15h 15m
2 stops
LHR20:50London Heathrow
£313
Find similar
KLM
15 Nov
LHR17:50London Heathrow
19h 40m
2 stops
TRS14:30Trieste Ronchi dei Legionari
17 Nov
TRS06:35Trieste Ronchi dei Legionari
10h 30m
2 stops
LHR16:05London Heathrow
£355
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 17 oktober 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

lør. 29/11

07:30-14:05

1 stop5h 35m

Trieste Ronchi dei Legionari

lør. 6/12

15:00-20:50

1 stop6h 50m

£169

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

lør. 29/11

07:30-14:05

1 stop5h 35m

Trieste Ronchi dei Legionari

lør. 6/12

15:00-20:50

1 stop6h 50m

£170

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

søn. 16/11

07:30-14:05

1 stop5h 35m

Trieste Ronchi dei Legionari

lør. 22/11

06:25-10:45

1 stop5h 20m

£171

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

søn. 30/11

07:30-14:05

1 stop5h 35m

Trieste Ronchi dei Legionari

søn. 7/12

15:00-18:45

1 stop4h 45m

£174

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

ons. 12/11

09:55-18:50

1 stop7h 55m

Trieste Ronchi dei Legionari

ons. 19/11

06:35-18:00

2 stops12h 25m

£185

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

lør. 29/11

20:15-14:05

2 stops16h 50m

Trieste Ronchi dei Legionari

lør. 6/12

06:25-14:45

1 stop9h 20m

£191

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

ons. 12/11

19:30-14:05

1 stop17h 35m

Trieste Ronchi dei Legionari

ons. 19/11

14:40-22:20

1 stop8h 40m

£193

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

søn. 30/11

06:30-18:30

2 stops11h 00m

Trieste Ronchi dei Legionari

søn. 7/12

15:15-10:45

2 stops20h 30m

£310

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

man. 16/2

20:25-18:30

2 stops21h 05m

Trieste Ronchi dei Legionari

man. 23/2

06:35-20:50

2 stops15h 15m

£313

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

lør. 15/11

17:50-14:30

2 stops19h 40m

Trieste Ronchi dei Legionari

man. 17/11

06:35-16:05

2 stops10h 30m

£355

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 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 £76. 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 £145.

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 £94. Flights to Trieste are more costly in the morning, with an average ticket price of £113. Departure times in the morning 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.
Search flight deals

  • 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 £150Free CancellationRating
6.8
7,497 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.

An easier way to manage your Trieste trip

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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