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Cheap flights from San Salvador to London Heathrow Airport from £369

SAL — LHR
18 Nov — 25 Nov1
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

Mon 9/1114:39 -
1 stop15h 01m
Tue 24/1111:45 -
2 stops31h 29m
Deal found 18/10£745
Fri 6/1114:57 -
1 stop14h 43m
Fri 13/1116:00 -
1 stop27h 14m
Deal found 16/10£748
Thu 12/1114:39 -
1 stop15h 01m
Thu 19/1106:20 -
2 stops23h 15m
Deal found 15/10£760
Thu 12/1114:39 -
1 stop15h 01m
Thu 19/1112:40 -
1 stop30h 34m
Deal found 15/10£782
Mon 26/1013:57 -
1 stop15h 43m
Tue 10/1111:45 -
2 stops31h 29m
Deal found 16/10£782

Find flight deals from San Salvador to Heathrow

Round-trip from

£745

One-way from

£369

Popular in

January

Cheapest in

April

Average price

£823
KLM
  • KLM
  • 9/11-24/11
  • 3 total stops
  • 46h 30m total
  • San Salvador to London
Search Deals
7/12-31/12
  • 7/12-31/12
  • 3 total stops
  • 39h 37m total
  • San Salvador to London
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£44 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 October 2026
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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

Tue 8/12

15:17-15:05

1 stop17h 48m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£420

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Sun 6/12

15:17-12:50

2 stops39h 33m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£453

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Tue 8/12

19:47-16:25

3 stops38h 38m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£477
Fastest return journey

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Sun 6/12

14:39-11:40

1 stop15h 01m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£490

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Wed 23/12

14:50-14:35

1 stop17h 45m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£538

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Sat 9/1

07:45-09:10

3 stops43h 25m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£628

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Mon 11/1

16:40-09:10

2 stops34h 30m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£636

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Thu 22/10

08:05-15:35

1 stop24h 30m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£641

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Sat 24/10

12:05-15:35

1 stop20h 30m

London Heathrow

Wed 31/12

00:00-17:00

Nonstop0h 00m

£641

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Mon 9/11

14:39-11:40

1 stop15h 01m

London Heathrow

Tue 24/11

16:00-13:14

1 stop27h 14m

£748

Flights are sorted by cheapest return flights first.

Deals found on 14/10

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 £769). Flying from San Salvador to London Heathrow Airport in January is currently the most expensive (average of £1,067). 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.

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
2,554 reviews
Check prices

Overall

6.5

Comfort

6.1

Crew

7.2

Food

5.0

Boarding

6.9

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
2,554 reviews
Avianca
6.5
Okay
2,554 reviews
Check prices

Overall

6.5

Comfort

6.1

Crew

7.2

Food

5.0

Boarding

6.9

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 14h 41m. KLM provides one of the quickest options available for as low as £860. The distance between San Salvador and London Heathrow Airport is about 5431 mi. Both multi-stop and direct flights can be found to your destination and back.

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

    Currently priced at £819, 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 9% 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 £769). Flying from San Salvador to London Heathrow Airport in January is currently the most expensive (average of £1,067). 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
Milton Keynes
Luton
Slough
Gatwick
Wembley
Hayes
Ilford
Croydon
Colchester
Northampton
Eastbourne
Brentford
Southend-on-Sea
Barnet
Enfield
Southall
Watford
Stratford-upon-Avon
Kingston upon Thames

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£819Average£1,007FlexibilityNo cancel feeOn-time71%
Search Avianca flights

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