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Cheap flights from Trieste to London Heathrow Airport from £115

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 15/6. Fares are subject to change and may not be available on all flights or dates of travel.
TRS — LHR
5 May — 12 May1
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 30 April 2025.

Round-trip from

£151

One-way from

£115

Popular in

June

Cheapest in

May

Average price

£125
Lufthansa
  • Lufthansa
  • 5/6-7/6
  • 2 total stops
  • 25h 05m total
  • Trieste to London
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Lufthansa
  • Lufthansa
  • 15/6
  • 1 total stop
  • 13h 10m total
  • Trieste to London
Search Deals
High demand for flights, 1% potential price rise
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Cheapest flight prices on average. 2% potential price decrease (£3 potential savings vs. average return price).
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Average for round-trip flights in April 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 30 April 2025.

Thu 5/606:30TRS - LHR
1 stop12h 10mLufthansa
Sat 7/608:30LHR - TRS
1 stop12h 55mLufthansa
Deal found 29/4£151
Sat 3/512:20TRS - LHR
1 stop8h 05mMultiple Airlines
Mon 5/520:50LHR - TRS
1 stop14h 30mMultiple Airlines
Deal found 29/4£224
Thu 2/1006:35TRS - LHR
2 stops13h 05mAustrian Airlines
Tue 7/1010:25LHR - TRS
2 stops23h 00mAustrian Airlines
Deal found 29/4£243
Thu 12/615:15TRS - LHR
2 stops17h 25mKLM
Mon 16/620:55LHR - TRS
2 stops20h 35mKLM
Deal found 29/4£254
Thu 8/515:15TRS - LHR
2 stops17h 45mAir France
Sun 11/519:45LHR - TRS
2 stops21h 45mAir France
Deal found 29/4£387
Thu 8/511:15TRS - LHR
2 stops12h 10mTurkish Airlines
Mon 12/506:30LHR - TRS
2 stops15h 25mTurkish Airlines
Deal found 29/4£550

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 30 April 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

Thu 5/6

06:30-17:40

1 stop12h 10m

London Heathrow

Sat 7/6

08:30-22:25

1 stop12h 55m

£151

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Thu 2/10

06:35-18:40

2 stops13h 05m

London Heathrow

Tue 7/10

10:25-10:25

2 stops23h 00m

£243

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Thu 12/6

15:15-07:40

2 stops17h 25m

London Heathrow

Mon 16/6

20:55-18:30

2 stops20h 35m

£254

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Tue 1/7

14:45-18:40

1 stop4h 55m

London Heathrow

Tue 8/7

19:30-10:25

2 stops13h 55m

£257

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Wed 1/10

11:15-21:25

2 stops11h 10m

London Heathrow

Tue 7/10

09:00-18:35

2 stops8h 35m

£982

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Sun 15/6

06:30-18:40

1 stop13h 10m

£115

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Sun 15/6

20:40-14:15

2 stops18h 35m

£118

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Thu 22/5

19:15-21:40

2 stops27h 25m

£221

TriesteLondon

TRS - LHR

TRSLHR

Trieste Ronchi dei Legionari

Mon 4/8

06:35-16:45

2 stops11h 10m

£394

Flights are sorted by cheapest return flights first.

Deals found on 29/4

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.

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 30 April 2025.
See what other customers who have flown with KLM, Austrian Airlines and Air France from Trieste to London have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,333 reviews
Check prices

Boarding

7.8

Crew

8.4

Comfort

7.7

Overall

7.8

Entertainment

7.1

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
KLM
7.8
Good
1,333 reviews
KLM
7.8
Good
1,333 reviews
Check prices

Boarding

7.8

Crew

8.4

Comfort

7.7

Overall

7.8

Entertainment

7.1

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Austrian Airlines
7.6
Good
780 reviews
KLM
7.8
Good
1,333 reviews
Check prices

Boarding

7.8

Crew

8.4

Comfort

7.7

Overall

7.8

Entertainment

7.1

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Air France
7.4
Good
1,446 reviews
KLM
7.8
Good
1,333 reviews
Check prices

Boarding

7.8

Crew

8.4

Comfort

7.7

Overall

7.8

Entertainment

7.1

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Lufthansa
6.7
Okay
7,042 reviews
KLM
7.8
Good
1,333 reviews
Check prices

Boarding

7.8

Crew

8.4

Comfort

7.7

Overall

7.8

Entertainment

7.1

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

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.

  • What are the cheapest airlines flying from Trieste to London Heathrow Airport round-trip?

    According to our current data, Lufthansa (£151), Austrian Airlines (£243), and KLM (£254) offers the cheapest pricing from Trieste to London Heathrow Airport.

  • What are the cheapest airlines to fly from Trieste to London Heathrow Airport one-way?

    For one-way options, check prices for Lufthansa. According to our data, you can fly for as low as £115. Users have also found prices from £221 and £394 on Austrian Airlines and Bulgaria Air, respectively.

  • 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 Trieste?

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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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