Find flights
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to San Salvador from £297

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
6 Apr — 13 Apr1
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 7 March 2026.

Sat 7/321:40
LHR
-
SAL
1 stop19h 25m
Avianca
Thu 7/508:05
SAL
-
LHR
1 stop24h 30m
Avianca
Deal found 6/3£579
Mon 9/321:40
LHR
-
SAL
1 stop24h 00m
Avianca
Mon 16/322:05
SAL
-
LHR
1 stop34h 30m
Avianca
Deal found 3/3£598
Mon 9/321:40
LHR
-
SAL
1 stop19h 25m
Avianca
Wed 18/308:00
SAL
-
LHR
1 stop24h 35m
Avianca
Deal found 3/3£599
Tue 5/522:05
LHR
-
SAL
1 stop24h 35m
Avianca
Sat 23/512:05
SAL
-
LHR
1 stop20h 30m
Avianca
Deal found 5/3£609
Sat 25/422:05
LHR
-
SAL
2 stops39h 05m
Avianca
Sun 31/523:20
SAL
-
LHR
2 stops33h 15m
Avianca
Deal found 4/3£610
Tue 21/422:05
LHR
-
SAL
1 stop20h 00m
Avianca
Tue 28/422:20
SAL
-
LHR
2 stops34h 15m
Avianca
Deal found 7/3£612

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 7 March 2026.

Round-trip from

£608

One-way from

£297

Popular in

February

Cheapest in

October

Average price

£621
Avianca
  • Avianca
  • 25/4-31/5
  • 3 total stops
  • 53h 15m total
  • London to San Salvador
Search Deals
15/4
  • 15/4
  • 3 total stops
  • 37h 15m total
  • London to San Salvador
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£26 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 7 March 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

06:55-20:49

2 stops20h 54m

San Salvador El Salvador Intl

Thu 30/4

06:00-12:20

2 stops23h 20m

£619
Fastest return journey

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Thu 23/4

07:45-20:49

2 stops20h 04m

San Salvador El Salvador Intl

Mon 27/4

06:00-07:40

1 stop18h 40m

£641

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Thu 14/5

22:05-15:40

1 stop24h 35m

San Salvador El Salvador Intl

Mon 18/5

12:05-15:35

1 stop20h 30m

£645

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Wed 25/3

12:05-14:24

2 stops32h 19m

San Salvador El Salvador Intl

Wed 8/4

06:00-12:35

2 stops23h 35m

£660

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Sat 18/7

07:45-20:49

2 stops20h 04m

San Salvador El Salvador Intl

Sun 9/8

06:00-11:35

1 stop22h 35m

£665

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Sun 9/8

07:45-18:58

2 stops18h 13m

San Salvador El Salvador Intl

Sun 23/8

06:00-09:40

2 stops20h 40m

£668

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Thu 2/4

10:00-20:49

1 stop17h 49m

San Salvador El Salvador Intl

Sun 12/4

13:50-07:40

1 stop34h 50m

£670
Cheapest one-way

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Sat 9/5

22:05-11:05

1 stop20h 00m

£318

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Fri 1/5

22:05-11:05

1 stop20h 00m

£364

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Mon 27/4

19:30-20:25

3 stops31h 55m

£438

Flights are sorted by cheapest return flights first.

Deals found on 5/3

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 6 March 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 £506). Flying from London Heathrow Airport to San Salvador in December is currently the most expensive (average of £626). 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.

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 7 March 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
7.8
Good
1,467 reviews
Check prices

Comfort

7.6

Overall

7.8

Boarding

7.8

Entertainment

7.1

Food

7.3

Crew

8.4

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
7.8
Good
1,467 reviews
KLM
7.8
Good
1,467 reviews
Check prices

Comfort

7.6

Overall

7.8

Boarding

7.8

Entertainment

7.1

Food

7.3

Crew

8.4

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
9,406 reviews
KLM
7.8
Good
1,467 reviews
Check prices

Comfort

7.6

Overall

7.8

Boarding

7.8

Entertainment

7.1

Food

7.3

Crew

8.4

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
10,795 reviews
KLM
7.8
Good
1,467 reviews
Check prices

Comfort

7.6

Overall

7.8

Boarding

7.8

Entertainment

7.1

Food

7.3

Crew

8.4

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
7,833 reviews
KLM
7.8
Good
1,467 reviews
Check prices

Comfort

7.6

Overall

7.8

Boarding

7.8

Entertainment

7.1

Food

7.3

Crew

8.4

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
2,498 reviews
KLM
7.8
Good
1,467 reviews
Check prices

Comfort

7.6

Overall

7.8

Boarding

7.8

Entertainment

7.1

Food

7.3

Crew

8.4

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 United Airlines fly from London Heathrow Airport to San Salvador in about 20h 54m. The time it takes to get you to your destination can typically vary by up to . There are 5431 mi between London Heathrow Airport and San Salvador.

  • 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 £504. Additional return tickets that might be worth considering are offered by United Airlines and KLM, with the lowest prices starting at £547 and £574, 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 £506). Flying from London Heathrow Airport to San Salvador in December is currently the most expensive (average of £626). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 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 7 March 2026.
AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest£504Average£582FlexibilityNo cancel feeOn-time71%
Search Avianca flights
United AirlinesCheapest£547Average£670FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
KLMCheapest£574Average£690FlexibilityNo cancel feeOn-time75%
Search KLM flights
LufthansaCheapest£591Average£637FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air CanadaCheapest£602Average£790FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.