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Cheap flights from Trieste to London Heathrow Airport from £62

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 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
TRS — LHR
22 Mar — 29 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Trieste to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Trieste to Heathrow
Explore the most affordable flight options available from Trieste to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 February 2026.

Thu 8/1019:15
TRS
-
LHR
1 stop15h 25m
ITA Airways
Mon 12/1016:30
LHR
-
TRS
1 stop16h 55m
ITA Airways
Deal found 17/2£133
Fri 9/1019:15
TRS
-
LHR
1 stop15h 25m
ITA Airways
Mon 12/1016:30
LHR
-
TRS
1 stop16h 55m
ITA Airways
Deal found 17/2£134
Mon 23/1106:35
TRS
-
LHR
1 stop10h 05m
ITA Airways
Sat 28/1110:30
LHR
-
TRS
1 stop11h 25m
ITA Airways
Deal found 19/2£134
Wed 7/1019:15
TRS
-
LHR
1 stop15h 25m
ITA Airways
Sat 10/1010:30
LHR
-
TRS
1 stop7h 00m
ITA Airways
Deal found 19/2£156
Thu 7/515:15
TRS
-
LHR
1 stop25h 25m
ITA Airways
Thu 14/516:30
LHR
-
TRS
1 stop5h 25m
ITA Airways
Deal found 20/2£164
Tue 14/414:45
TRS
-
LHR
1 stop8h 25m
Lufthansa
Tue 21/406:30
LHR
-
TRS
1 stop6h 25m
Lufthansa
Deal found 18/2£165
Tue 17/314:40
TRS
-
LHR
1 stop5h 05m
Lufthansa
Tue 24/308:30
LHR
-
TRS
1 stop4h 30m
Lufthansa
Deal found 17/2£165
Wed 11/314:40
TRS
-
LHR
1 stop8h 40m
Lufthansa
Sat 14/307:30
LHR
-
TRS
1 stop5h 35m
Lufthansa
Deal found 18/2£167
Thu 12/306:15
TRS
-
LHR
1 stop5h 30m
Lufthansa
Wed 18/313:30
LHR
-
TRS
1 stop8h 10m
Lufthansa
Deal found 17/2£168
Sun 19/406:00
TRS
-
LHR
1 stop11h 40m
Lufthansa
Sun 26/406:30
LHR
-
TRS
1 stop14h 45m
Lufthansa
Deal found 20/2£168
Thu 14/514:40
TRS
-
LHR
1 stop8h 30m
Lufthansa
Mon 18/507:30
LHR
-
TRS
1 stop13h 45m
Lufthansa
Deal found 18/2£169
Thu 16/414:40
TRS
-
LHR
1 stop8h 30m
Lufthansa
Sun 19/406:30
LHR
-
TRS
1 stop6h 30m
Lufthansa
Deal found 16/2£170

Find flight deals from Trieste to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Trieste (TRS) to Heathrow (LHR). 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 20 February 2026.

Round-trip from

£165

One-way from

£57

Popular in

January

Cheapest in

May

Average price

£106
Lufthansa
  • Lufthansa
  • 14/4-21/4
  • 2 total stops
  • 14h 50m total
  • Trieste to London
Search Deals
2/3
  • 2/3
  • 1 total stop
  • 15h 55m total
  • Trieste to London
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£14 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£4 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Trieste to Heathrow 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 20 February 2026.
Use the filters below to find and compare flights from Trieste to London Heathrow Airport that are best for you.

Fly from

Trieste

Fly to

Heathrow

Route

Depart

Return

Price

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Thu 14/5

14:40-22:10

1 stop8h 30m

London Heathrow

Sun 17/5

06:30-22:15

1 stop14h 45m

£169

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Tue 14/4

15:15-09:40

1 stop19h 25m

London Heathrow

Tue 21/4

10:30-22:55

1 stop11h 25m

£169

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Fri 22/5

14:40-22:10

1 stop8h 30m

London Heathrow

Mon 25/5

06:30-22:15

1 stop14h 45m

£169

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Thu 16/4

14:40-22:10

1 stop8h 30m

London Heathrow

Sun 19/4

06:30-14:00

1 stop6h 30m

£170

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Fri 20/3

15:00-22:20

1 stop8h 20m

London Heathrow

Sun 22/3

07:30-14:05

1 stop5h 35m

£172

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Tue 14/4

14:45-22:10

1 stop8h 25m

London Heathrow

Tue 21/4

13:40-22:25

2 stops7h 45m

£178

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Fri 3/7

14:40-22:10

1 stop8h 30m

London Heathrow

Tue 7/7

06:30-22:25

1 stop14h 55m

£186

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Mon 27/4

19:15-09:40

1 stop15h 25m

London Heathrow

Fri 1/5

16:30-18:30

1 stop25h 00m

£188

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Sun 8/3

15:00-18:45

1 stop4h 45m

London Heathrow

Fri 13/3

17:30-22:30

1 stop4h 00m

£188

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Thu 4/6

19:15-09:40

1 stop15h 25m

£62

Flights are sorted by cheapest return flights first.

Deals found on 19/2

Showing 1-10 of 20 results
1
2

Best time to book a flight from Trieste to Heathrow

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

What is the cheapest month to book a flight from Trieste to London Heathrow Airport?

Currently, July is the cheapest month in which you can book a flight from Trieste to London Heathrow Airport (average of £55). Flying from Trieste to London Heathrow Airport in August is currently the most expensive (average of £140). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Trieste to Heathrow. 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 from for flights from Trieste to London Heathrow?

    Trieste Ronchi dei Legionari (TRS) is the airport you will fly out of if you book a flight from Trieste to London Heathrow. You should not have trouble finding flights to London Heathrow from Ronchi dei Legionari; the airport handles an average of 0 outbound flights to London Heathrow per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Trieste airport to London Heathrow. It is only a 18.2 mi journey to Ronchi dei Legionari (TRS) from Trieste’s city center.

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

    For as low as £169, Lufthansa can have you in London Heathrow Airport from Trieste in 8h 30m. Trieste and London Heathrow Airport are separated by a distance of 744 mi. Both multi-stop and direct flights can be found to your destination and back.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Trieste to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Trieste to London Heathrow Airport?

    Currently, July is the cheapest month in which you can book a flight from Trieste to London Heathrow Airport (average of £55). Flying from Trieste to London Heathrow Airport in August is currently the most expensive (average of £140). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Luton
Croydon
Wembley
Northampton
Gatwick
Slough
Hounslow
Ilford
Hayes
Brentford
Colchester
Watford
Guildford
Kingston upon Thames
Eastbourne
Ipswich
Chelmsford
Swindon
Bedford

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

Deals for Trieste to Heathrow 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 Trieste to Heathrow?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Heathrow from Trieste.

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

Certainly. Search results for flights to Heathrow from Trieste shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights offers price alerts on Trieste to Heathrow flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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