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Cheap flights from London Heathrow Airport to Trieste from £110

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 4/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — TRS
20 Apr — 27 Apr1
1 adult

Cheap flight deals from Heathrow to Trieste

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Trieste (TRS). 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 15 April 2025.

Round-trip from

£141

One-way from

£110

Popular in

January

Cheapest in

August

Average price

£196
Lufthansa
  • Lufthansa
  • 29/5-5/6
  • 2 total stops
  • 11h 00m total
  • London to Trieste
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4/5
  • 4/5
  • 1 total stop
  • 15h 50m total
  • London to Trieste
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£46 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Heathrow to Trieste

Cheapest flights from Heathrow to Trieste
Explore the most affordable flight options available from Heathrow to Trieste. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 April 2025.

Thu 29/517:30LHR - TRS
1 stop4h 05mLufthansa
Thu 5/614:45TRS - LHR
1 stop6h 55mLufthansa
Deal found 13/4£141
Fri 18/708:05LHR - TRS
2 stops13h 20mMultiple Airlines
Tue 22/711:15TRS - LHR
2 stops10h 30mMultiple Airlines
Deal found 15/4£228
Wed 16/708:40LHR - TRS
2 stops8h 50mKLM
Wed 23/706:35TRS - LHR
2 stops10h 40mKLM
Deal found 15/4£237

Cheapflights Fare Finder

Customise your flight search to find flights from Heathrow to Trieste 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 15 April 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Trieste that are best for you.

Fly from

Heathrow

Fly to

Trieste

Route

Depart

Return

Price

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Thu 29/5

17:30-22:35

1 stop4h 05m

Trieste Ronchi dei Legionari

Thu 5/6

14:45-20:40

1 stop6h 55m

£141

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Fri 18/7

08:05-22:25

2 stops13h 20m

Trieste Ronchi dei Legionari

Tue 22/7

11:15-20:45

2 stops10h 30m

£228

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Wed 16/7

08:40-18:30

2 stops8h 50m

Trieste Ronchi dei Legionari

Wed 23/7

06:35-16:15

2 stops10h 40m

£237

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Thu 12/6

09:00-22:55

2 stops12h 55m

Trieste Ronchi dei Legionari

Sat 14/6

06:35-21:25

2 stops15h 50m

£365

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Sun 4/5

07:00-23:50

1 stop15h 50m

£110

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Sun 24/8

08:30-22:25

1 stop12h 55m

£119

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Sun 29/6

08:40-22:55

2 stops13h 15m

£188

LondonTrieste

LHR - TRS

LHRTRS

London Heathrow

Sat 28/6

06:00-10:25

2 stops27h 25m

£192

Flights are sorted by cheapest return flights first.

Deals found on 14/4

Best time to book a flight from Heathrow to Trieste

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

What is the cheapest time of day to fly from LHR to TRS?

Find hourly flight availability from Heathrow to Trieste. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 April 2025.

A simple way to save on the total cost of your ticket is to fly from London Heathrow Airport to Trieste in the afternoon. If you’re flexible enough to do this you can expect to save up to 30% on your trip compared to booking a flight in the morning.

Rainfall in Trieste by month

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

In terms of precipitation, rainfall in Trieste ranges from 62.0 - 114.0 inches per month. November is typically the wettest month, when rainfall can reach 114.0 mm. February is typically the driest time to visit Trieste when rainfall is around 62.0 mm.

Temperature in Trieste by month

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

If weather is an important factor for your trip to Trieste, 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 24.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

Reviews of airlines servicing Trieste

Get insights into the airlines that provide service to Trieste. 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 Trieste. Reviews last updated 15 April 2025.
KLM
7.8
Good
1,323 reviews
Check prices

Comfort

7.7

Food

7.3

Crew

8.4

Entertainment

7.1

Boarding

7.8

Overall

7.8

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
1,323 reviews
KLM
7.8
Good
1,323 reviews
Check prices

Comfort

7.7

Food

7.3

Crew

8.4

Entertainment

7.1

Boarding

7.8

Overall

7.8

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
775 reviews
KLM
7.8
Good
1,323 reviews
Check prices

Comfort

7.7

Food

7.3

Crew

8.4

Entertainment

7.1

Boarding

7.8

Overall

7.8

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
7.5
Good
1,435 reviews
KLM
7.8
Good
1,323 reviews
Check prices

Comfort

7.7

Food

7.3

Crew

8.4

Entertainment

7.1

Boarding

7.8

Overall

7.8

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
7,004 reviews
KLM
7.8
Good
1,323 reviews
Check prices

Comfort

7.7

Food

7.3

Crew

8.4

Entertainment

7.1

Boarding

7.8

Overall

7.8

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 Heathrow to Trieste. 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 into for flights to Trieste from London Heathrow?

    If you book a flight to Trieste from London Heathrow, you will be flying to Ronchi dei Legionari, which is the city’s only airport. Trieste Ronchi dei Legionari (TRS) is located 18.2 mi from the center of Trieste. There are 0 flights from London Heathrow to Ronchi dei Legionari per day from 1 airline.

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

    Flying on Lufthansa is currently your cheapest option to Trieste, with prices starting at £141. Additional return tickets that might be worth considering are offered by KLM and Air France, with the lowest prices starting at £237 and £365, respectively. These flights start at 36% lower than the current average price 3 months from now.

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

    The cheapet airlines for a one-way flight from London Heathrow Airport to Trieste are Lufthansa (£119), KLM (£188), and Austrian Airlines (£192).

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

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

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

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

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

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

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
Udine

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Top airline flying from Heathrow to Trieste

Discover the top airline that operate flights from Heathrow to Trieste. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 15 April 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£147Average£225FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

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

Deals for Heathrow to Trieste 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 Heathrow to Trieste?

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