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 refreshed on a daily basis.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, 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 travel and health documents required for your trip to Trieste Ronchi dei Legionari Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Trieste Ronchi dei Legionari Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

C$ 242 Cheap Flights from London Heathrow Airport to Trieste in 2026

1 adult

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Find the cheapest flights from London Heathrow Airport to Trieste

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:30 p.m. - 2:30 p.m.

LHR

TRS

21h 00m

1 stop

6:35 a.m. - 3:40 p.m.

TRS

LHR

10h 05m

1 stop

C$ 310ITA Airways

Fri, 9 Oct - Sun, 25 Oct

4:30 p.m. - 10:55 p.m.

LHR

TRS

5h 25m

1 stop

3:15 p.m. - 9:40 a.m.

TRS

LHR

19h 25m

1 stop

C$ 323ITA Airways

Sat, 12 Sep - Thu, 17 Sep

4:30 p.m. - 10:55 p.m.

LHR

TRS

5h 25m

1 stop

7:15 p.m. - 9:40 a.m.

TRS

LHR

15h 25m

1 stop

C$ 357ITA Airways

Tue, 7 Jul - Fri, 17 Jul

4:30 p.m. - 10:55 p.m.

LHR

TRS

5h 25m

1 stop

7:15 p.m. - 9:40 a.m.

TRS

LHR

15h 25m

1 stop

C$ 375ITA Airways

Mon, 6 Jul - Sat, 18 Jul

10:30 a.m. - 10:55 p.m.

LHR

TRS

11h 25m

1 stop

7:15 p.m. - 9:40 a.m.

TRS

LHR

15h 25m

1 stop

C$ 395ITA Airways

Wed, 13 May - Sat, 16 May

10:30 a.m. - 10:25 a.m.

LHR

TRS

22h 55m

1 stop

2:45 p.m. - 10:55 p.m.

TRS

LHR

9h 10m

2 stops

C$ 401Multiple Airlines

Fri, 9 Oct - Sun, 25 Oct

4:30 p.m. - 10:55 p.m.

LHR

TRS

5h 25m

1 stop

6:10 a.m. - 2:40 p.m.

TRS

LHR

9h 30m

1 stop

C$ 427Multiple Airlines

Thu, 4 Jun - Sun, 7 Jun

9:55 a.m. - 6:30 p.m.

LHR

TRS

7h 35m

2 stops

6:35 a.m. - 5:35 p.m.

TRS

LHR

12h 00m

2 stops

C$ 434KLM

Tue, 7 Jul - Tue, 14 Jul

6:30 a.m. - 6:30 p.m.

LHR

TRS

11h 00m

2 stops

6:35 a.m. - 5:35 p.m.

TRS

LHR

12h 00m

2 stops

C$ 435KLM

Tue, 7 Jul - Tue, 14 Jul

4:30 p.m. - 10:55 p.m.

LHR

TRS

5h 25m

1 stop

6:35 a.m. - 3:40 p.m.

TRS

LHR

10h 05m

1 stop

C$ 450ITA Airways

Sun, 2 Aug - Fri, 14 Aug

ITA Airways flights from London Heathrow Airport to Trieste

Our best ITA Airways deals on London Heathrow Airport to Trieste flight tickets

ITA Airways

9 Oct

LHR4:30 p.m.London Heathrow

21h 00m

1 stop

TRS2:30 p.m.Trieste Ronchi dei Legionari

25 Oct

TRS6:35 a.m.Trieste Ronchi dei Legionari

10h 05m

1 stop

LHR3:40 p.m.London Heathrow

C$ 310

ITA Airways

12 Sep

LHR4:30 p.m.London Heathrow

5h 25m

1 stop

TRS10:55 p.m.Trieste Ronchi dei Legionari

17 Sep

TRS3:15 p.m.Trieste Ronchi dei Legionari

19h 25m

1 stop

LHR9:40 a.m.London Heathrow

C$ 323

ITA Airways

7 Jul

LHR4:30 p.m.London Heathrow

5h 25m

1 stop

TRS10:55 p.m.Trieste Ronchi dei Legionari

17 Jul

TRS7:15 p.m.Trieste Ronchi dei Legionari

15h 25m

1 stop

LHR9:40 a.m.London Heathrow

C$ 357

KLM flights from London Heathrow Airport to Trieste

Our best KLM deals on London Heathrow Airport to Trieste flight tickets

KLM

7 Jul

LHR9:55 a.m.London Heathrow

7h 35m

2 stops

TRS6:30 p.m.Trieste Ronchi dei Legionari

14 Jul

TRS6:35 a.m.Trieste Ronchi dei Legionari

12h 00m

2 stops

LHR5:35 p.m.London Heathrow

C$ 434

KLM

7 Jul

LHR6:30 a.m.London Heathrow

11h 00m

2 stops

TRS6:30 p.m.Trieste Ronchi dei Legionari

14 Jul

TRS6:35 a.m.Trieste Ronchi dei Legionari

12h 00m

2 stops

LHR5:35 p.m.London Heathrow

C$ 435

KLM

7 Jul

LHR6:30 a.m.London Heathrow

11h 00m

2 stops

TRS6:30 p.m.Trieste Ronchi dei Legionari

14 Jul

TRS6:35 a.m.Trieste Ronchi dei Legionari

12h 00m

2 stops

LHR5:35 p.m.London Heathrow

C$ 484

momondo Fare Finder

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

Cheapest round-trip

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Fri 9/10

4:30 p.m.-2:30 p.m.

1 stop21h 00m

Trieste Ronchi dei Legionari

Sun 25/10

6:35 a.m.-3:40 p.m.

1 stop10h 05m

C$ 310

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Sat 12/9

4:30 p.m.-10:55 p.m.

1 stop5h 25m

Trieste Ronchi dei Legionari

Thu 17/9

3:15 p.m.-9:40 a.m.

1 stop19h 25m

C$ 323

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Tue 7/7

4:30 p.m.-10:55 p.m.

1 stop5h 25m

Trieste Ronchi dei Legionari

Fri 17/7

7:15 p.m.-9:40 a.m.

1 stop15h 25m

C$ 357

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Mon 6/7

4:30 p.m.-10:55 p.m.

1 stop5h 25m

Trieste Ronchi dei Legionari

Sat 18/7

7:15 p.m.-9:40 a.m.

1 stop15h 25m

C$ 375

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Wed 13/5

10:30 a.m.-10:55 p.m.

1 stop11h 25m

Trieste Ronchi dei Legionari

Sat 16/5

7:15 p.m.-9:40 a.m.

1 stop15h 25m

C$ 395

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Fri 9/10

10:30 a.m.-10:25 a.m.

1 stop22h 55m

Trieste Ronchi dei Legionari

Sun 25/10

2:45 p.m.-10:55 p.m.

2 stops9h 10m

C$ 401

Quickest round-trip

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Thu 4/6

4:30 p.m.-10:55 p.m.

1 stop5h 25m

Trieste Ronchi dei Legionari

Sun 7/6

6:10 a.m.-2:40 p.m.

1 stop9h 30m

C$ 427

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Tue 7/7

9:55 a.m.-6:30 p.m.

2 stops7h 35m

Trieste Ronchi dei Legionari

Tue 14/7

6:35 a.m.-5:35 p.m.

2 stops12h 00m

C$ 434

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Tue 7/7

6:30 a.m.-6:30 p.m.

2 stops11h 00m

Trieste Ronchi dei Legionari

Tue 14/7

6:35 a.m.-5:35 p.m.

2 stops12h 00m

C$ 435

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Sun 2/8

4:30 p.m.-10:55 p.m.

1 stop5h 25m

Trieste Ronchi dei Legionari

Fri 14/8

6:35 a.m.-3:40 p.m.

1 stop10h 05m

C$ 450

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

ITA Airways is the most popular carrier operating from London Heathrow to Trieste Ronchi dei Legionari

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 round-trip 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

Fastest flight time	5h 25m
Direct flights	None

The fastest flight from London Heathrow Airport to Trieste takes 5h 25m

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

Frequently asked questions about flying from London Heathrow Airport to Trieste

How far is London Heathrow to Trieste Ronchi dei Legionari by plane?
Trieste Ronchi dei Legionari is 1226.9 km away from London Heathrow. A reasonable flight in good conditions will take 5h 25m.
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 refreshed on a daily basis.
How old do you have to be to fly from London Heathrow Airport to Trieste Ronchi dei Legionari Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, 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 travel and health documents required for your trip to Trieste Ronchi dei Legionari Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Trieste Ronchi dei Legionari Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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?

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

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Trieste.

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

Of course. momondo tracks the price of London to Trieste flights. All you need is a valid email address and we will do the rest; it is that quick and easy.