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Cheap flights from San Salvador to London Heathrow Airport from £449

SAL — LHR
8 Dec — 15 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from San Salvador to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from San Salvador to Heathrow

Wed 18/1113:59 -
2 stops17h 51m
Thu 3/1216:00 -
1 stop27h 14m
Deal found 5/11£702
Wed 18/1113:59 -
2 stops20h 06m
Wed 2/1216:00 -
1 stop27h 14m
Deal found 5/11£716
Sun 15/1114:39 -
1 stop15h 01m
Tue 1/1216:00 -
1 stop27h 14m
Deal found 5/11£722
Tue 17/1114:39 -
1 stop15h 01m
Thu 3/1212:40 -
1 stop30h 34m
Deal found 5/11£722
Sun 15/1114:39 -
1 stop15h 01m
Wed 2/1216:00 -
1 stop27h 14m
Deal found 5/11£735
Tue 17/1114:39 -
1 stop15h 01m
Wed 2/1216:00 -
1 stop27h 14m
Deal found 5/11£736
Fri 6/1114:57 -
1 stop14h 43m
Fri 13/1116:00 -
1 stop27h 14m
Deal found 3/11£748

Find flight deals from San Salvador to Heathrow

Round-trip from

£690

One-way from

£449

Popular in

January

Cheapest in

April

Average price

£818
KLM
  • KLM
  • 26/1-8/2
  • 3 total stops
  • 34h 35m total
  • San Salvador to London
Search Deals
15/11-31/12
  • 15/11-31/12
  • 3 total stops
  • 32h 15m total
  • San Salvador to London
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£35 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£12 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2026
Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Fri 13/11

07:45-22:40

3 stops32h 55m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£519

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Thu 15/4

22:05-12:05

3 stops55h 00m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£536

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Fri 13/11

07:45-14:35

1 stop24h 50m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£537

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Wed 23/12

07:45-14:35

1 stop24h 50m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£537

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Mon 4/1

08:30-22:40

3 stops32h 10m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£703

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Tue 26/1

15:14-16:05

2 stops18h 51m

London Heathrow

Mon 8/2

20:25-20:39

2 stops30h 14m

£713

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Sat 1/5

14:00-16:15

2 stops19h 15m

London Heathrow

Sat 8/5

06:30-20:09

2 stops20h 39m

£753
Fastest return journey

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Mon 4/1

14:50-14:35

1 stop17h 45m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£793

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Thu 6/5

13:50-13:15

1 stop16h 25m

London Heathrow

Mon 10/5

08:40-23:36

2 stops21h 56m

£801

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Mon 3/5

14:00-11:20

1 stop14h 20m

London Heathrow

Sun 9/5

06:30-20:09

2 stops20h 39m

£801

Flights are sorted by cheapest return flights first.

Deals found on 4/11

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

Best time to book a flight from San Salvador to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from San Salvador with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from San Salvador to London Heathrow Airport

What is the cheapest month to book a flight from San Salvador to London Heathrow Airport?

Currently, April is the cheapest month in which you can book a flight from San Salvador to London Heathrow Airport (average of £767). Flying from San Salvador to London Heathrow Airport in January is currently the most expensive (average of £1,064). 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.

How much does it cost for a return flight from San Salvador to London Heathrow Airport?

Airfare is below average for this route at the moment.

San Salvador to London Heathrow Airport flights typically cost between £817 and £858 in January.
The cheapest return price found within the last 5 days was £690 on KLM (26 Jan–8 Feb).

Reviews of airlines servicing Heathrow

Read reviews from past customers who have flown with Avianca from San Salvador to London Heathrow Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Avianca
6.5
Okay
2,551 reviews
Check prices

Comfort

6.1

Crew

7.2

Overall

6.5

Boarding

6.9

Food

5.0

Entertainment

5.3

Reviews

1 / 20
2.0
Mediocre

Kevin,Dec 2025

SAL - SJO

Horrible experience and I will never use the airline again I also will make sure I post a video to my 400k followers about this experience
Avianca
6.5
Okay
2,551 reviews
Avianca
6.5
Okay
2,551 reviews
Check prices

Comfort

6.1

Crew

7.2

Overall

6.5

Boarding

6.9

Food

5.0

Entertainment

5.3

Reviews

1 / 20
2.0
Mediocre

Kevin,Dec 2025

SAL - SJO

Horrible experience and I will never use the airline again I also will make sure I post a video to my 400k followers about this experience

Related info for your journey

  • What airport do you fly from for flights from San Salvador to London Heathrow?

    Located just 20.5 mi from the city center, San Salvador El Salvador Intl is the airport most travelers will use when flying to London Heathrow from San Salvador. Booking flights from El Salvador Intl (SAL) to London Heathrow should be relatively easy as there are 0 daily outbound flights to London Heathrow from 1 airline.

  • How long is the flight from San Salvador to London Heathrow Airport?

    A quick flight from San Salvador to London Heathrow Airport can take about 18h 51m. KLM provides one of the quickest options available for as low as £713. The distance between San Salvador and London Heathrow Airport is about 5431 mi.

  • What is the cheapest airline to fly from San Salvador to London Heathrow Airport round-trip?

    Currently priced at £816, Avianca will fly you from San Salvador to London Heathrow Airport and back. In addition to Avianca, many other airlines offer competitively priced options for your trip. Users have found that Avianca is 8% cheaper than the other options available to this destination.

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

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

  • How can I find direct flights from San Salvador to Heathrow?

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

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

    Yes. Cheapflights offers flight deals from San Salvador 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 San Salvador to London Heathrow Airport?

    Currently, April is the cheapest month in which you can book a flight from San Salvador to London Heathrow Airport (average of £767). Flying from San Salvador to London Heathrow Airport in January is currently the most expensive (average of £1,064). 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
Hounslow
Luton
Milton Keynes
Wembley
Gatwick
Slough
Ilford
Hayes
Croydon
Eastbourne
Northampton
Barnet
Brentford
Southend-on-Sea
Enfield
Southall
Harrow
Watford
Folkestone
Dagenham

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for San Salvador to Heathrow

San Salvador to Gatwick flights

Top airline flying from San Salvador to Heathrow

AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest£816Average£1,004FlexibilityNo cancel feeOn-time71%
Search Avianca flights

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Need flexible booking options for your flight to Heathrow from San Salvador? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from San Salvador to Heathrow become cheaper?

Yes! Start tracking prices for San Salvador to Heathrow flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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