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Cheap flights from Trieste to London Heathrow Airport from £54

TRS — LHR
1 Nov — 8 Nov1
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

Tue 24/1119:15 -
1 stop15h 25m
Thu 26/1120:50 -
1 stop15h 20m
Deal found 1/10£131
Fri 13/1113:35 -
1 stop7h 30m
Fri 20/1110:30 -
1 stop7h 00m
Deal found 29/9£160
Sun 22/1111:15 -
1 stop5h 25m
Sat 28/1109:55 -
1 stop8h 45m
Deal found 28/9£160
Thu 10/1211:15 -
1 stop5h 25m
Sun 13/1220:50 -
1 stop10h 40m
Deal found 29/9£162
Thu 12/1111:15 -
1 stop5h 25m
Thu 19/1116:30 -
1 stop5h 25m
Deal found 28/9£164
Wed 11/1115:15 -
1 stop25h 25m
Sat 14/1110:30 -
1 stop22h 55m
Deal found 30/9£166
Mon 9/1110:45 -
1 stop5h 50m
Sat 14/1109:55 -
1 stop8h 45m
Deal found 28/9£169
Thu 12/1106:35 -
1 stop10h 05m
Sat 14/1110:30 -
1 stop11h 25m
Deal found 28/9£173
Tue 10/1111:15 -
1 stop23h 25m
Sat 14/1110:30 -
1 stop27h 00m
Deal found 1/10£175
Sat 7/1119:15 -
1 stop15h 25m
Sat 14/1110:30 -
1 stop11h 25m
Deal found 29/9£176

Find flight deals from Trieste to Heathrow

Round-trip from

£131

One-way from

£54

Popular in

January

Cheapest in

November

Average price

£79
24/11-26/11
  • 24/11-26/11
  • 2 total stops
  • 30h 45m total
  • Trieste to London
Search Deals
13/11-31/12
  • 13/11-31/12
  • 1 total stop
  • 7h 30m total
  • Trieste to London
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£13 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£5 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2026
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Trieste to London Heathrow Airport that are best for you.

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Cheapest return flight

TriesteLondon

TRS Trieste Ronchi dei Legionari - LHR London Heathrow

TRSLHR

Trieste Ronchi dei Legionari

Thu 12/11

06:35-15:40

1 stop10h 05m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£79

TriesteLondon

TRS Trieste Ronchi dei Legionari - LHR London Heathrow

TRSLHR

Trieste Ronchi dei Legionari

Tue 13/10

15:15-09:40

1 stop19h 25m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£103

TriesteLondon

TRS Trieste Ronchi dei Legionari - LHR London Heathrow

TRSLHR

Trieste Ronchi dei Legionari

Fri 16/10

19:15-09:40

1 stop15h 25m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£103

TriesteLondon

TRS Trieste Ronchi dei Legionari - LHR London Heathrow

TRSLHR

Trieste Ronchi dei Legionari

Wed 14/10

11:15-09:40

1 stop23h 25m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£105
Fastest return journey

TriesteLondon

TRS Trieste Ronchi dei Legionari - LHR London Heathrow

TRSLHR

Trieste Ronchi dei Legionari

Tue 3/11

11:15-15:40

1 stop5h 25m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£107

TriesteLondon

TRS Trieste Ronchi dei Legionari - LHR London Heathrow

TRSLHR

Trieste Ronchi dei Legionari

Wed 7/10

19:15-09:40

1 stop15h 25m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£113

TriesteLondon

TRS Trieste Ronchi dei Legionari - LHR London Heathrow

TRSLHR

Trieste Ronchi dei Legionari

Mon 19/10

19:15-09:40

1 stop15h 25m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£113

TriesteLondon

TRS Trieste Ronchi dei Legionari - LHR London Heathrow

TRSLHR

Trieste Ronchi dei Legionari

Sat 24/10

16:25-10:10

3 stops18h 45m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£118

TriesteLondon

TRS Trieste Ronchi dei Legionari - LHR London Heathrow

TRSLHR

Trieste Ronchi dei Legionari

Thu 12/11

09:10-20:05

3 stops11h 55m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£126

TriesteLondon

TRS Trieste Ronchi dei Legionari - LHR London Heathrow

TRSLHR

Trieste Ronchi dei Legionari

Thu 8/10

19:15-09:40

1 stop15h 25m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£137

Flights are sorted by cheapest return flights first.

Deals found on 28/9

Showing 1-10 of 21 resultsSorted by cheapest first
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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

Related info for your journey

  • 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 £182, ITA Airways can have you in London Heathrow Airport from Trieste in 15h 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.

See more FAQs

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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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