Find flights
When to book
FAQs

Cheap flights from Trieste to London Heathrow Airport from £73

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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
TRS — LHR
17 jan — 24 jan1
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 18 dezembro 2025.

qua 31/1214:40TRS - LHR
2 stops7h 20mLufthansa
sáb 3/107:30LHR - TRS
1 stop5h 35mLufthansa
Deal found 16/12£207
qua 31/1214:40TRS - LHR
2 stops7h 20mLufthansa
seg 5/106:30LHR - TRS
1 stop14h 55mLufthansa
Deal found 16/12£208
qua 31/1214:40TRS - LHR
2 stops7h 20mLufthansa
ter 6/108:30LHR - TRS
1 stop4h 30mLufthansa
Deal found 16/12£211
qua 31/1214:40TRS - LHR
1 stop7h 10mLufthansa
dom 4/107:30LHR - TRS
1 stop5h 35mLufthansa
Deal found 16/12£212
ter 30/1206:15TRS - LHR
2 stops7h 50mMultiple Airlines
sáb 3/106:30LHR - TRS
1 stop6h 35mMultiple Airlines
Deal found 17/12£294
ter 30/1214:40TRS - LHR
1 stop8h 40mLufthansa
sáb 3/106:30LHR - TRS
1 stop6h 35mLufthansa
Deal found 17/12£299
qui 18/1206:15TRS - LHR
1 stop5h 30mLufthansa
seg 22/1213:50LHR - TRS
2 stops7h 35mLufthansa
Deal found 16/12£310
ter 30/1206:15TRS - LHR
2 stops7h 50mMultiple Airlines
dom 4/106:30LHR - TRS
1 stop6h 35mMultiple Airlines
Deal found 16/12£310

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 18 dezembro 2025.

Round-trip from

£136

One-way from

£73

Popular in

June

Cheapest in

May

Average price

£113
ITA Airways
  • ITA Airways
  • 13/5-17/5
  • 2 total stops
  • 26h 50m total
  • Trieste to London
Search Deals
10/1
  • 10/1
  • 1 total stop
  • 16h 00m total
  • Trieste to London
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£2 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 December 2025
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 18 dezembro 2025.
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

sex 1/5

06:00-18:40

1 stop13h 40m

London Heathrow

seg 4/5

06:30-22:15

1 stop14h 45m

£147

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

dom 1/2

15:00-18:45

1 stop4h 45m

London Heathrow

dom 8/2

07:30-14:05

1 stop5h 35m

£148

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

sáb 25/4

06:00-14:40

1 stop9h 40m

London Heathrow

ter 28/4

13:30-22:25

1 stop7h 55m

£150

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

ter 28/4

14:40-22:10

1 stop8h 30m

London Heathrow

sáb 2/5

06:30-21:55

1 stop14h 25m

£150

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

sex 24/4

14:40-22:10

1 stop8h 30m

London Heathrow

qua 29/4

13:30-22:15

1 stop7h 45m

£150

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

sáb 25/4

06:00-14:40

1 stop9h 40m

London Heathrow

seg 27/4

09:30-22:15

1 stop11h 45m

£150

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

qui 23/4

14:40-18:40

1 stop5h 00m

London Heathrow

qua 29/4

13:40-22:15

2 stops7h 35m

£162

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

qui 30/4

14:40-22:10

1 stop8h 30m

London Heathrow

sáb 2/5

13:30-21:55

1 stop7h 25m

£164

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

sex 24/4

15:15-09:40

1 stop19h 25m

London Heathrow

dom 26/4

10:30-18:30

1 stop7h 00m

£168

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

sáb 24/1

15:00-21:00

2 stops7h 00m

London Heathrow

seg 26/1

13:30-22:25

1 stop7h 55m

£170

Flights are sorted by cheapest return flights first.

Deals found on 17/12

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, January is the cheapest month in which you can book a flight from Trieste to London Heathrow Airport (average of £53). Flying from Trieste to London Heathrow Airport in August is currently the most expensive (average of £147). 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 £147, Lufthansa can have you in London Heathrow Airport from Trieste in 13h 40m. Trieste and London Heathrow Airport are separated by a distance of 744 mi.

  • 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, January is the cheapest month in which you can book a flight from Trieste to London Heathrow Airport (average of £53). Flying from Trieste to London Heathrow Airport in August is currently the most expensive (average of £147). 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
Croydon
Slough
Hounslow
Northampton
Luton
Gatwick
Wembley
Ilford
Brentford
Colchester
Hayes
Watford
Crawley
Swindon
Winchester
Bedford
Romford
Chichester
Eastbourne

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.