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Cheap flights from London Heathrow Airport to San Salvador from £359

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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SAL
7 Jul — 14 Jul1
1 adult

Cheapflights Tip: The best prices from London Heathrow to San Salvador El Salvador Intl are usually found in March or September, booked 11 days in advance, depart on a Wednesday or Monday and return on a Friday

Cheap 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 2 July 2025.

Round-trip from

£588

One-way from

£359

Popular in

December

Cheapest in

March

Average price

£637
United Airlines
  • United Airlines
  • 8/8-16/8
  • 2 total stops
  • 30h 45m total
  • London to San Salvador
3/9
  • 3/9
  • 2 total stops
  • 25h 18m total
  • London to San Salvador
Highest demand for flights based on searches. 8% potential increase in price (£42 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£13 potential savings vs. average return price).
Average for round-trip flights in July 2025

Find flight deals from Heathrow to San Salvador

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 2 July 2025.

Fri 8/813:00LHR - SAL
1 stop15h 35mUnited Airlines
Sat 16/813:25SAL - LHR
1 stop15h 10mUnited Airlines
Deal found 30/6£588
Thu 23/1010:00LHR - SAL
1 stop33h 06mLufthansa
Sat 8/1101:10SAL - LHR
1 stop23h 30mLufthansa
Deal found 1/7£590
Fri 19/919:40LHR - SAL
1 stop17h 15mMultiple Airlines
Fri 3/1019:30SAL - LHR
1 stop17h 15mMultiple Airlines
Deal found 1/7£594
Fri 15/810:00LHR - SAL
1 stop20h 58mAir Canada
Fri 22/806:00SAL - LHR
1 stop18h 40mAir Canada
Deal found 30/6£611
Fri 19/920:10LHR - SAL
2 stops22h 25mFinnair
Fri 3/1012:35SAL - LHR
1 stop13h 50mFinnair
Deal found 1/7£619
Sun 24/817:25LHR - SAL
1 stop26h 02mDelta
Fri 29/813:52SAL - LHR
2 stops57h 28mDelta
Deal found 2/7£664
Tue 21/1022:05LHR - SAL
1 stop14h 55mAvianca
Sat 8/1116:05SAL - LHR
1 stop16h 30mAvianca
Deal found 1/7£755
Fri 22/808:40LHR - SAL
2 stops18h 42mKLM
Sat 30/813:52SAL - LHR
1 stop33h 53mKLM
Deal found 2/7£788

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 2 July 2025.
Use the filters below to find and compare flights from London Heathrow Airport to San Salvador that are best for you.

Fly from

Heathrow

Fly to

San Salvador

Route

Depart

Return

Price

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Fri 8/8

13:00-21:35

1 stop15h 35m

San Salvador El Salvador Intl

Sat 16/8

13:25-11:35

1 stop15h 10m

£588

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Thu 23/10

13:05-04:50

1 stop22h 45m

San Salvador El Salvador Intl

Sun 9/11

16:40-10:15

1 stop35h 35m

£590

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Fri 19/9

19:40-05:55

1 stop17h 15m

San Salvador El Salvador Intl

Fri 3/10

19:30-19:45

1 stop17h 15m

£594

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Fri 15/8

10:00-23:58

1 stop20h 58m

San Salvador El Salvador Intl

Fri 22/8

06:00-07:40

1 stop18h 40m

£611

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Fri 19/9

20:10-11:35

2 stops22h 25m

San Salvador El Salvador Intl

Fri 3/10

12:35-09:25

1 stop13h 50m

£619

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Sun 24/8

17:25-12:27

1 stop26h 02m

San Salvador El Salvador Intl

Fri 29/8

13:52-06:20

2 stops57h 28m

£664

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Tue 21/10

22:05-06:00

1 stop14h 55m

San Salvador El Salvador Intl

Sat 8/11

16:05-14:35

1 stop16h 30m

£755

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Fri 22/8

08:40-20:22

2 stops18h 42m

San Salvador El Salvador Intl

Sat 30/8

13:52-06:45

1 stop33h 53m

£788

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Wed 3/9

15:05-09:23

2 stops25h 18m

£359

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Mon 24/11

21:40-16:25

1 stop24h 45m

£513

Flights are sorted by cheapest return flights first.

Deals found on 1/7

Showing 1-10 of 13 results
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?

Use this chart to determine the optimal time to book a return flight from Heathrow to San Salvador. Price data was last updated on 27 June 2025.

Booking 11 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 time of day to fly from LHR to SAL?

Find hourly flight availability from Heathrow to San Salvador. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 2 July 2025.

It’s optimal to fly from London Heathrow Airport to San Salvador at midday. By choosing this option you can save up to 52% on the cost of your flight, compared to a flight in the evening.

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

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 2 July 2025.
Check out reviews from past customers who have flown with KLM, Finnair, andUnited Airlines 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.

Boarding

7.8

Entertainment

7.1

Food

7.2

Crew

8.4

Overall

7.8

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Boarding

7.8

Entertainment

7.1

Food

7.2

Crew

8.4

Overall

7.8

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Boarding

7.8

Entertainment

7.1

Food

7.2

Crew

8.4

Overall

7.8

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Boarding

7.8

Entertainment

7.1

Food

7.2

Crew

8.4

Overall

7.8

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Boarding

7.8

Entertainment

7.1

Food

7.2

Crew

8.4

Overall

7.8

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Boarding

7.8

Entertainment

7.1

Food

7.2

Crew

8.4

Overall

7.8

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

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 5 airlines. San Salvador El Salvador Intl is conveniently located just 20.5 mi from San Salvador’s city center.

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

    Flying on United Airlines is currently your cheapest option to San Salvador, with prices starting at £588. Additional return tickets that might be worth considering are offered by Lufthansa and Air Canada, with the lowest prices starting at £590 and £611, respectively. These flights start at 5% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from London Heathrow Airport to San Salvador one-way?

    £513 is the cheapest one-way deal found within the past few days, from Avianca. You may also be able to find cheap deals on KLM and United Airlines, with prices starting from £722 and £811, respectively.

  • 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.

See more FAQs

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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.

Top 5 airlines flying from Heathrow to San Salvador

Discover the top 5 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 2 July 2025.
AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest£480Average£727FlexibilityNo cancel feeOn-time71%
Search Avianca flights
KLMCheapest£506Average£575FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air CanadaCheapest£513Average£707FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest£541Average£596FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£541Average£602FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

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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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