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Cheap flights from Trieste to London Heathrow Airport from £72

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 27/9. Fares are subject to change and may not be available on all flights or dates of travel.
TRS — LHR
1 Sep — 8 Sep1
1 adult

Cheap 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 27 August 2025.

Round-trip from

£167

One-way from

£72

Popular in

June

Cheapest in

May

Average price

£135
Lufthansa
  • Lufthansa
  • 2/1-6/1
  • 2 total stops
  • 16h 55m total
  • Trieste to London
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27/9
  • 27/9
  • 1 total stop
  • 8h 05m total
  • Trieste to London
Search Deals
High demand for flights, 9% potential price rise
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Cheapest flight prices on average. 4% potential price decrease (£4 potential savings vs. average return price).
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Average for round-trip flights in August 2025
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Find flight deals from Trieste to Heathrow

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 27 August 2025.

Thu 9/1014:45TRS - LHR
1 stop4h 55mLufthansa
Thu 16/1007:30LHR - TRS
1 stop5h 35mLufthansa
Deal found 25/8£168
Sat 27/906:30TRS - LHR
1 stop10h 10mLufthansa
Fri 3/1015:30LHR - TRS
1 stop5h 55mLufthansa
Deal found 26/8£168
Thu 25/906:30TRS - LHR
1 stop4h 10mLufthansa
Sun 28/908:30LHR - TRS
1 stop12h 55mLufthansa
Deal found 25/8£169
Sat 4/1006:30TRS - LHR
1 stop12h 10mLufthansa
Thu 16/1008:30LHR - TRS
1 stop4h 35mLufthansa
Deal found 26/8£173
Fri 19/914:45TRS - LHR
1 stop8h 25mLufthansa
Sun 21/908:30LHR - TRS
1 stop12h 55mLufthansa
Deal found 26/8£180
Fri 28/1115:00TRS - LHR
1 stop6h 50mLufthansa
Mon 1/1207:40LHR - TRS
2 stops13h 45mLufthansa
Deal found 25/8£181
Wed 1/1014:45TRS - LHR
1 stop4h 55mLufthansa
Sun 5/1008:30LHR - TRS
1 stop12h 55mLufthansa
Deal found 25/8£189
Sat 6/1215:00TRS - LHR
2 stops7h 00mLufthansa
Mon 8/1208:30LHR - TRS
1 stop12h 55mLufthansa
Deal found 26/8£190
Sat 29/1115:00TRS - LHR
2 stops7h 00mLufthansa
Mon 1/1207:30LHR - TRS
1 stop5h 30mLufthansa
Deal found 25/8£193
Thu 2/1006:30TRS - LHR
1 stop4h 10mLufthansa
Sat 18/1006:30LHR - TRS
1 stop14h 55mLufthansa
Deal found 24/8£197
Fri 12/906:30TRS - LHR
1 stop4h 10mLufthansa
Mon 15/910:30LHR - TRS
1 stop11h 05mLufthansa
Deal found 25/8£198

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 27 August 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

Fri 2/1

06:25-15:50

1 stop10h 25m

London Heathrow

Tue 6/1

06:30-14:00

1 stop6h 30m

£167

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Sat 6/12

15:00-20:50

1 stop6h 50m

London Heathrow

Mon 8/12

09:30-22:25

1 stop11h 55m

£168

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Mon 29/9

14:45-20:40

1 stop6h 55m

London Heathrow

Wed 8/10

17:30-22:35

1 stop4h 05m

£168

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Thu 9/10

14:45-18:40

1 stop4h 55m

London Heathrow

Thu 16/10

07:30-14:05

1 stop5h 35m

£168

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Fri 10/10

06:30-16:40

1 stop11h 10m

London Heathrow

Mon 13/10

08:30-22:35

1 stop13h 05m

£168

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Sat 11/10

06:30-18:40

1 stop13h 10m

London Heathrow

Sun 12/10

08:30-22:25

1 stop12h 55m

£168

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Thu 9/10

06:30-14:40

1 stop9h 10m

London Heathrow

Sun 12/10

07:30-22:25

1 stop13h 55m

£168

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Sat 27/9

06:30-15:40

1 stop10h 10m

London Heathrow

Fri 3/10

15:30-22:25

1 stop5h 55m

£168

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Thu 25/9

06:30-09:40

1 stop4h 10m

London Heathrow

Sun 28/9

07:30-22:25

1 stop13h 55m

£169

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Fri 3/10

14:45-22:10

1 stop8h 25m

London Heathrow

Wed 8/10

17:30-22:35

1 stop4h 05m

£169

Flights are sorted by cheapest return flights first.

Deals found on 25/8

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 £112). Flying from Trieste to London Heathrow Airport in August is currently the most expensive (average of £164). 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 £167, Lufthansa can have you in London Heathrow Airport from Trieste in 10h 25m. 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 £112). Flying from Trieste to London Heathrow Airport in August is currently the most expensive (average of £164). 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
Hounslow
Gatwick
Slough
Northampton
Luton
Deal
Wembley
Ilford
Crawley
Hayes
Watford
Folkestone
Ipswich
Chichester
Winchester
Eastbourne
Swindon
Dartford

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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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