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Cheap flights from London Heathrow Airport to San Salvador from £422

LHR — SAL
7 Oct — 14 Oct1
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

Mon 5/1009:55 -
1 stop26h 35m
Sun 11/1003:45 -
1 stop33h 20m
Deal found 5/9£652
Fri 23/1007:25 -
2 stops20h 24m
Fri 30/1006:00 -
2 stops19h 55m
Deal found 3/9£698
Tue 13/1007:25 -
2 stops20h 24m
Thu 22/1006:00 -
1 stop18h 45m
Deal found 4/9£699
Fri 23/1015:15 -
1 stop28h 17m
Fri 30/1013:57 -
1 stop15h 43m
Deal found 3/9£703
Sat 3/1015:15 -
1 stop28h 16m
Sat 10/1013:57 -
1 stop16h 18m
Deal found 5/9£706
Mon 5/1015:15 -
1 stop28h 17m
Mon 12/1013:57 -
1 stop33h 28m
Deal found 6/9£716
Tue 3/1113:45 -
2 stops29h 34m
Mon 16/1116:40 -
1 stop33h 00m
Deal found 3/9£721
Sat 31/1013:45 -
2 stops31h 39m
Sun 15/1107:00 -
1 stop18h 50m
Deal found 4/9£722
Wed 4/1108:00 -
1 stop20h 47m
Mon 16/1123:54 -
1 stop14h 41m
Deal found 3/9£723
Fri 30/1007:40 -
2 stops18h 39m
Tue 3/1107:00 -
2 stops21h 50m
Deal found 6/9£723
Mon 5/1007:45 -
2 stops20h 04m
Mon 12/1006:00 -
2 stops21h 25m
Deal found 5/9£724

Find flight deals from Heathrow to San Salvador

Round-trip from

£652

One-way from

£422

Popular in

September

Cheapest in

November

Average price

£807
5/10-11/10
  • 5/10-11/10
  • 2 total stops
  • 59h 55m total
  • London to San Salvador
Search Deals
5/10-31/12
  • 5/10-31/12
  • 1 total stop
  • 26h 35m total
  • London to San Salvador
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£28 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
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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

Tue 6/10

20:50-06:30

3 stops64h 40m

San Salvador El Salvador Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£484

LondonSan Salvador

LHR London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Sat 3/10

20:00-00:45

1 stop35h 45m

San Salvador El Salvador Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£502
Fastest return journey

LondonSan Salvador

LHR London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Mon 5/10

22:30-14:10

1 stop22h 40m

San Salvador El Salvador Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£570

LondonSan Salvador

LHR London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Tue 6/10

22:30-14:10

1 stop22h 40m

San Salvador El Salvador Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£571

LondonSan Salvador

LHR London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Tue 6/10

19:10-18:10

1 stop30h 00m

San Salvador El Salvador Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£631

LondonSan Salvador

LHR London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Tue 6/10

15:15-12:32

1 stop28h 17m

San Salvador El Salvador Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£649

LondonSan Salvador

LHR London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Thu 5/11

06:35-21:19

2 stops20h 44m

San Salvador El Salvador Intl

Tue 10/11

07:00-10:25

2 stops21h 25m

£699

LondonSan Salvador

LHR London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Sat 7/11

07:30-21:45

2 stops20h 15m

San Salvador El Salvador Intl

Sun 15/11

16:40-07:40

1 stop33h 00m

£699

LondonSan Salvador

LHR London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Mon 5/10

15:15-12:32

1 stop28h 17m

San Salvador El Salvador Intl

Mon 12/10

13:57-06:25

1 stop33h 28m

£716

LondonSan Salvador

LHR London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Wed 4/11

07:40-22:47

2 stops21h 07m

San Salvador El Salvador Intl

Mon 16/11

23:54-20:35

1 stop14h 41m

£723

Flights are sorted by cheapest return flights first.

Deals found on 2/9

Showing 1-10 of 15 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

How far ahead should I book a flight from London Heathrow Airport to San Salvador?

Booking 76 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to San Salvador. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, November is the cheapest month in which you can book a flight from London Heathrow Airport to San Salvador (average of £607). Flying from London Heathrow Airport to San Salvador in September is currently the most expensive (average of £807). 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 £792 and £931 in October.
The cheapest return price found within the last 5 days was £652 on Multiple Airlines (5 Oct–11 Oct).

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.
United Airlines
7.4
Good
10,173 reviews
Check prices

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

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.
United Airlines
7.4
Good
10,173 reviews
United Airlines
7.4
Good
10,173 reviews
Check prices

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

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.
Air Canada
7.1
Good
11,593 reviews
United Airlines
7.4
Good
10,173 reviews
Check prices

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

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.
Lufthansa
6.8
Okay
8,221 reviews
United Airlines
7.4
Good
10,173 reviews
Check prices

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

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.
Avianca
6.5
Okay
2,554 reviews
United Airlines
7.4
Good
10,173 reviews
Check prices

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

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 United Airlines and KLM fly from London Heathrow Airport to San Salvador in about 20h 44m. The time it takes to get you to your destination can typically vary by up to 7h 33m. 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 £499. Additional return tickets that might be worth considering are offered by United Airlines and Lufthansa, with the lowest prices starting at £552 and £591, respectively. These flights start at 29% 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, November is the cheapest month in which you can book a flight from London Heathrow Airport to San Salvador (average of £607). Flying from London Heathrow Airport to San Salvador in September is currently the most expensive (average of £807). 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

Gatwick to San Salvador flights
London City to San Salvador flights
Stansted to San Salvador flights

Top 4 airlines flying from Heathrow to San Salvador

AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest£499Average£606FlexibilityNo cancel feeOn-time71%
Search Avianca flights
United AirlinesCheapest£552Average£690FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£591Average£683FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air CanadaCheapest£617Average£792FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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How does Cheapflights help users find flights from Heathrow to San Salvador?

Deals for Heathrow to San Salvador 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 San Salvador?

Millions of users choose and trust Cheapflights to book the best flight deals from Heathrow to San Salvador for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Heathrow to San Salvador with no change fees?

Yes, we can. To see specific flights from Heathrow to San Salvador with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes, Cheapflights offers price alerts on Heathrow to San Salvador 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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