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Cheap flights from London Heathrow Airport to San Salvador from £324

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 15/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SAL
3 May — 10 May1
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 April 2026.

Wed 13/522:05
LHR
-
SAL
1 stop15h 25m
Avianca
Wed 20/522:20
SAL
-
LHR
2 stops34h 15m
Avianca
Deal found 29/3£552
Thu 4/622:05
LHR
-
SAL
1 stop20h 00m
Avianca
Mon 8/622:05
SAL
-
LHR
1 stop34h 30m
Avianca
Deal found 1/4£553
Sun 17/522:05
LHR
-
SAL
1 stop20h 00m
Avianca
Sun 24/512:05
SAL
-
LHR
1 stop20h 30m
Avianca
Deal found 1/4£578
Tue 5/522:05
LHR
-
SAL
1 stop20h 00m
Avianca
Tue 19/508:05
SAL
-
LHR
1 stop24h 30m
Avianca
Deal found 30/3£580
Tue 5/522:05
LHR
-
SAL
1 stop20h 00m
Avianca
Sat 23/508:05
SAL
-
LHR
1 stop24h 30m
Avianca
Deal found 29/3£584
Mon 1/622:05
LHR
-
SAL
1 stop20h 00m
Avianca
Fri 5/623:20
SAL
-
LHR
2 stops33h 15m
Avianca
Deal found 29/3£586

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 April 2026.

Round-trip from

£550

One-way from

£324

Popular in

February

Cheapest in

October

Average price

£633
Avianca
  • Avianca
  • 4/6-8/6
  • 2 total stops
  • 59h 05m total
  • London to San Salvador
Search Deals
Avianca
  • Avianca
  • 15/4
  • 1 total stop
  • 15h 25m total
  • London to San Salvador
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£23 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 April 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

Tue 21/4

18:35-12:39

2 stops25h 04m

San Salvador El Salvador Intl

Fri 1/5

14:04-14:35

2 stops17h 31m

£694

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Tue 28/4

10:45-12:39

2 stops32h 54m

San Salvador El Salvador Intl

Tue 5/5

14:04-13:15

1 stop16h 11m

£695

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Wed 29/4

15:50-12:39

2 stops27h 49m

San Salvador El Salvador Intl

Wed 6/5

14:04-20:10

2 stops23h 06m

£695

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Fri 17/4

14:25-12:43

1 stop29h 18m

San Salvador El Salvador Intl

Tue 12/5

13:19-11:05

1 stop14h 46m

£707

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Wed 1/7

16:40-11:29

1 stop25h 49m

San Salvador El Salvador Intl

Fri 31/7

01:15-10:40

2 stops26h 25m

£715
Fastest return journey

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Sat 22/8

13:05-04:50

1 stop22h 45m

San Salvador El Salvador Intl

Sat 12/9

06:00-07:40

1 stop18h 40m

£717

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Thu 30/4

14:50-12:15

2 stops28h 25m

San Salvador El Salvador Intl

Mon 4/5

13:50-11:35

1 stop14h 45m

£717
Cheapest one-way

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Wed 15/4

22:05-06:10

2 stops39h 05m

£330

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Wed 22/4

11:30-10:55

3 stops30h 25m

£431

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Sun 5/7

09:15-23:40

1 stop21h 25m

£546

Flights are sorted by cheapest return flights first.

Deals found on 30/3

Showing 1-10 of 16 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?

Use this chart to determine the optimal time to book a return flight from Heathrow to San Salvador. Price data was last updated on 2 April 2026.

Booking 78 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, March is the cheapest month in which you can book a flight from London Heathrow Airport to San Salvador (average of £511). Flying from London Heathrow Airport to San Salvador in December is currently the most expensive (average of £633). 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?

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 April 2026.
Check out reviews from past customers who have flown with KLM,United Airlines, andAir Canada 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.
KLM
7.7
Good
1,485 reviews
Check prices

Entertainment

7.1

Boarding

7.8

Overall

7.7

Crew

8.4

Comfort

7.6

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.7
Good
1,485 reviews
KLM
7.7
Good
1,485 reviews
Check prices

Entertainment

7.1

Boarding

7.8

Overall

7.7

Crew

8.4

Comfort

7.6

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
United Airlines
7.4
Good
9,542 reviews
KLM
7.7
Good
1,485 reviews
Check prices

Entertainment

7.1

Boarding

7.8

Overall

7.7

Crew

8.4

Comfort

7.6

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Air Canada
7.1
Good
10,889 reviews
KLM
7.7
Good
1,485 reviews
Check prices

Entertainment

7.1

Boarding

7.8

Overall

7.7

Crew

8.4

Comfort

7.6

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Lufthansa
6.8
Okay
7,888 reviews
KLM
7.7
Good
1,485 reviews
Check prices

Entertainment

7.1

Boarding

7.8

Overall

7.7

Crew

8.4

Comfort

7.6

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Avianca
6.5
Okay
2,505 reviews
KLM
7.7
Good
1,485 reviews
Check prices

Entertainment

7.1

Boarding

7.8

Overall

7.7

Crew

8.4

Comfort

7.6

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

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.

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

    Airlines like Delta and United Airlines fly from London Heathrow Airport to San Salvador in about 25h 04m. The time it takes to get you to your destination can typically vary by up to 45m. 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 £510. Additional return tickets that might be worth considering are offered by United Airlines and KLM, with the lowest prices starting at £564 and £581, respectively. These flights start at 23% 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 £511). Flying from London Heathrow Airport to San Salvador in December is currently the most expensive (average of £633). 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.
London City to San Salvador flights
Gatwick to San Salvador flights
Stansted to San Salvador flights

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 3 April 2026.
AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest£510Average£589FlexibilityNo cancel feeOn-time71%
Search Avianca flights
United AirlinesCheapest£564Average£686FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
KLMCheapest£581Average£646FlexibilityNo cancel feeOn-time75%
Search KLM flights
LufthansaCheapest£602Average£644FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air CanadaCheapest£609Average£798FlexibilityNo 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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