Cheap flights from London Heathrow Airport to San Salvador from £331

LHR — SAL
5 Dec — 12 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to San Salvador

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to San Salvador

Thu 19/1121:35 -
1 stop15h 00m
Fri 27/1114:50 -
1 stop17h 45m
Deal found 2/11£583
Thu 26/1121:35 -
1 stop15h 00m
Sat 5/1214:50 -
1 stop17h 45m
Deal found 1/11£586
Mon 9/1121:35 -
1 stop24h 05m
Sun 22/1107:45 -
1 stop24h 50m
Deal found 2/11£626
Mon 23/1121:35 -
1 stop15h 00m
Wed 25/1107:45 -
1 stop24h 50m
Deal found 3/11£629

Find flight deals from Heathrow to San Salvador

Round-trip from

£551

One-way from

£331

Popular in

September

Cheapest in

March

Average price

£705
KLM
  • KLM
  • 18/3-18/4
  • 4 total stops
  • 36h 24m total
  • London to San Salvador
8/3-31/12
  • 8/3-31/12
  • 2 total stops
  • 41h 40m total
  • London to San Salvador
Highest demand for flights based on searches. 4% potential increase in price (£28 potential increase over avg. return price).
Cheapest flight prices on average. 1% potential price decrease (£11 potential savings vs. average return price).
Average for round-trip flights in November 2026

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSan Salvador

LHR London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Mon 8/3

22:05-06:30

3 stops38h 25m

San Salvador El Salvador Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£422

LondonSan Salvador

LHR London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Wed 18/11

21:35-15:40

1 stop24h 05m

San Salvador El Salvador Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£438
Fastest return journey

LondonSan Salvador

LHR London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Tue 1/12

21:35-06:35

1 stop15h 00m

San Salvador El Salvador Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£495

LondonSan Salvador

LHR London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Sat 9/1

21:35-21:45

1 stop30h 10m

San Salvador El Salvador Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£498

LondonSan Salvador

LHR London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Wed 18/11

15:30-15:40

3 stops30h 10m

San Salvador El Salvador Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£536

LondonSan Salvador

LHR London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Wed 9/12

18:50-21:45

3 stops32h 55m

San Salvador El Salvador Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£592

LondonSan Salvador

LHR London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Wed 16/12

21:35-15:40

1 stop24h 05m

San Salvador El Salvador Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£623

LondonSan Salvador

LHR London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Tue 15/12

21:35-06:35

1 stop15h 00m

San Salvador El Salvador Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£629

LondonSan Salvador

LHR London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Thu 12/11

21:35-16:30

2 stops24h 55m

San Salvador El Salvador Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£689

LondonSan Salvador

LHR London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Tue 1/12

21:35-06:35

1 stop15h 00m

San Salvador El Salvador Intl

Tue 8/12

14:50-14:35

1 stop17h 45m

£725

Flights are sorted by cheapest return flights first.

Deals found on 1/11

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

Best time to book a flight from Heathrow to San Salvador

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

Cheapflights Insights

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

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

Currently, March is the cheapest month in which you can book a flight from London Heathrow Airport to San Salvador (average of £672). Flying from London Heathrow Airport to San Salvador in September is currently the most expensive (average of £879). 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 London Heathrow Airport to San Salvador?

Airfare is below average for this route at the moment.

London Heathrow Airport to San Salvador flights typically cost between £609 and £775 in March.
The cheapest return price found within the last 5 days was £551 on KLM (18 Mar–18 Apr).

Reviews of airlines servicing San Salvador

Check out reviews from past customers who have flown with United Airlines,Air Canada, andLufthansa from London Heathrow Airport to San Salvador to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.1

Overall

7.3

Food

6.7

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Tim,Sept 2025

LHR - IAD

The premium economy seats were very comfortable and the attention and service by the flight attendants was superb.

Crew

8.1

Overall

7.3

Food

6.7

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Tim,Sept 2025

LHR - IAD

The premium economy seats were very comfortable and the attention and service by the flight attendants was superb.

Crew

8.1

Overall

7.3

Food

6.7

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Tim,Sept 2025

LHR - IAD

The premium economy seats were very comfortable and the attention and service by the flight attendants was superb.

Crew

8.1

Overall

7.3

Food

6.7

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Tim,Sept 2025

LHR - IAD

The premium economy seats were very comfortable and the attention and service by the flight attendants was superb.

Crew

8.1

Overall

7.3

Food

6.7

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Tim,Sept 2025

LHR - IAD

The premium economy seats were very comfortable and the attention and service by the flight attendants was superb.

Related info for your journey

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

    Most people fly into San Salvador El Salvador Intl (SAL) if they book a flight to San Salvador from London Heathrow. On average, El Salvador Intl has 0 inbound flights from London Heathrow per day from 4 airlines. San Salvador El Salvador Intl is conveniently located just 20.5 mi from San Salvador’s city center.

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

    Airlines like Avianca and United Airlines fly from London Heathrow Airport to San Salvador in about 15h. The time it takes to get you to your destination can typically vary by up to 6h 07m. There are 5431 mi between London Heathrow Airport and San Salvador. This flight may include one or multiple stops.

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

    Flying on Avianca is currently your cheapest option to San Salvador, with prices starting at £543. Additional return tickets that might be worth considering are offered by United Airlines and Lufthansa, with the lowest prices starting at £615 and £635, respectively. These flights start at 25% lower than the current average price 3 months from now.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from London Heathrow Airport to San Salvador (average of £672). Flying from London Heathrow Airport to San Salvador in September is currently the most expensive (average of £879). 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Heathrow to San Salvador

Top 4 airlines flying from Heathrow to San Salvador

AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest£543Average£615FlexibilityNo cancel feeOn-time71%
Search Avianca flights
United AirlinesCheapest£615Average£713FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£635Average£749FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air CanadaCheapest£638Average£795FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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