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Cheap flights from London Heathrow Airport to San Salvador from £380

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 30/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SAL
2 Sep — 9 Sep1
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
Explore the most affordable flight options available from Heathrow to San Salvador. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 August 2026.

Mon 14/922:05
LHR
-
SAL
1 stop20h 00m
Avianca
Mon 21/912:05
SAL
-
LHR
1 stop20h 30m
Avianca
Deal found 29/7£674
Sun 13/922:05
LHR
-
SAL
1 stop15h 25m
Avianca
Sun 20/922:20
SAL
-
LHR
2 stops34h 15m
Avianca
Deal found 30/7£678
Sat 31/1007:30
LHR
-
SAL
2 stops19h 15m
Lufthansa
Sun 15/1123:54
SAL
-
LHR
1 stop15h 26m
Lufthansa
Deal found 29/7£680
Tue 3/1106:50
LHR
-
SAL
2 stops21h 57m
Lufthansa
Mon 16/1107:00
SAL
-
LHR
2 stops17h 20m
Lufthansa
Deal found 29/7£681
Wed 30/911:45
LHR
-
SAL
2 stops31h 46m
Delta
Thu 29/1013:57
SAL
-
LHR
1 stop15h 43m
Delta
Deal found 29/7£684
Wed 30/913:25
LHR
-
SAL
1 stop30h 06m
Delta
Fri 30/1013:57
SAL
-
LHR
2 stops35h 23m
Delta
Deal found 29/7£685
Tue 15/907:25
LHR
-
SAL
2 stops20h 24m
Multiple Airlines
Tue 22/906:00
SAL
-
LHR
2 stops20h 20m
Multiple Airlines
Deal found 1/8£689
Mon 14/920:05
LHR
-
SAL
2 stops23h 26m
Delta
Mon 21/913:57
SAL
-
LHR
1 stop14h 23m
Delta
Deal found 31/7£689
Mon 14/906:55
LHR
-
SAL
2 stops20h 54m
United Airlines
Mon 21/906:00
SAL
-
LHR
2 stops22h 55m
United Airlines
Deal found 29/7£690
Tue 1/915:15
LHR
-
SAL
1 stop28h 17m
KLM
Tue 8/913:57
SAL
-
LHR
1 stop16h 18m
KLM
Deal found 2/8£691

Find flight deals from Heathrow to San Salvador

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to San Salvador (SAL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 3 August 2026.

Round-trip from

£674

One-way from

£380

Popular in

September

Cheapest in

November

Average price

£715
Avianca
  • Avianca
  • 14/9-21/9
  • 2 total stops
  • 40h 30m total
  • London to San Salvador
Search Deals
30/8
  • 30/8
  • 1 total stop
  • 19h 35m total
  • London to San Salvador
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£27 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to San Salvador that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 3 August 2026.
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 - SAL

LHRSAL

London Heathrow

Sat 31/10

07:30-20:45

2 stops19h 15m

San Salvador El Salvador Intl

Sun 15/11

07:00-10:50

2 stops21h 50m

£681

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Wed 16/9

16:20-12:31

2 stops27h 11m

San Salvador El Salvador Intl

Wed 23/9

13:57-13:15

1 stop16h 18m

£693

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Tue 6/10

18:00-12:15

2 stops25h 15m

San Salvador El Salvador Intl

Tue 3/11

23:54-21:20

1 stop15h 26m

£715

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Sat 14/11

12:05-21:19

1 stop15h 14m

San Salvador El Salvador Intl

Wed 18/11

07:00-10:25

2 stops21h 25m

£715

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Thu 5/11

15:20-05:50

1 stop20h 30m

San Salvador El Salvador Intl

Sat 14/11

16:40-09:40

2 stops35h 00m

£721
Fastest return journey

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Wed 4/11

09:10-22:47

1 stop19h 37m

San Salvador El Salvador Intl

Mon 16/11

23:54-20:35

1 stop14h 41m

£723

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Tue 15/9

13:25-12:31

1 stop30h 06m

San Salvador El Salvador Intl

Tue 22/9

13:57-13:15

1 stop16h 18m

£727

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Thu 10/12

11:35-00:47

2 stops19h 12m

San Salvador El Salvador Intl

Fri 1/1

02:00-10:15

1 stop26h 15m

£745
Cheapest one-way

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Tue 25/8

09:55-11:05

2 stops32h 10m

£391

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Thu 20/8

22:05-11:05

1 stop20h 00m

£430

Flights are sorted by cheapest return flights first.

Deals found on 1/8

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
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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 £608). Flying from London Heathrow Airport to San Salvador in September is currently the most expensive (average of £794). 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 £687 and £787 in September.
The cheapest return price found within the last 5 days was £674 on Avianca (14 Sept–21 Sept).

Reviews of airlines servicing San Salvador

Get insights into the airlines that provide service to San Salvador. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Salvador. Reviews last updated 3 August 2026.
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
10,060 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Overall

7.4

Food

6.7

Crew

8.1

Comfort

7.3

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
10,060 reviews
United Airlines
7.4
Good
10,060 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Overall

7.4

Food

6.7

Crew

8.1

Comfort

7.3

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
11,424 reviews
United Airlines
7.4
Good
10,060 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Overall

7.4

Food

6.7

Crew

8.1

Comfort

7.3

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
8,176 reviews
United Airlines
7.4
Good
10,060 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Overall

7.4

Food

6.7

Crew

8.1

Comfort

7.3

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
2,524 reviews
United Airlines
7.4
Good
10,060 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Overall

7.4

Food

6.7

Crew

8.1

Comfort

7.3

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

Find useful and relevant information for your journey from Heathrow to San Salvador. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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 Delta fly from London Heathrow Airport to San Salvador in about 19h 15m. The time it takes to get you to your destination can typically vary by up to 7h 56m. 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 £500. Additional return tickets that might be worth considering are offered by United Airlines and Lufthansa, with the lowest prices starting at £553 and £585, respectively. These flights start at 28% 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 £608). Flying from London Heathrow Airport to San Salvador in September is currently the most expensive (average of £794). 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

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Alternative routes for Heathrow to San Salvador

See prices for flight routes from nearby airports that may be better suited for you.
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

Discover the top 4 airlines that operate flights from Heathrow to San Salvador. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 3 August 2026.
AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest£500Average£606FlexibilityNo cancel feeOn-time71%
Search Avianca flights
United AirlinesCheapest£553Average£690FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£585Average£660FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air CanadaCheapest£611Average£794FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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