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Cheap flights from London Heathrow Airport to San Salvador from £355

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 28/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SAL
8 Feb — 15 Feb1
1 adult
1 adult, Economy, 0 bags

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 9 January 2026.

Round-trip from

£495

One-way from

£355

Popular in

December

Cheapest in

September

Average price

£651
27/4-11/5
  • 27/4-11/5
  • 4 total stops
  • 57h 46m total
  • London to San Salvador
Search Deals
28/1
  • 28/1
  • 3 total stops
  • 25h 35m total
  • London to San Salvador
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£33 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Find 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 9 January 2026.

Mon 27/413:05LHR - SAL
2 stops27h 18mMultiple Airlines
Mon 11/522:27SAL - LHR
2 stops30h 28mMultiple Airlines
Deal found 7/1£495
Wed 4/209:25LHR - SAL
1 stop18h 54mMultiple Airlines
Wed 11/207:34SAL - LHR
1 stop21h 36mMultiple Airlines
Deal found 7/1£530
Sun 22/212:15LHR - SAL
2 stops22h 47mMultiple Airlines
Sun 1/306:20SAL - LHR
2 stops22h 30mMultiple Airlines
Deal found 8/1£554
Wed 28/112:05LHR - SAL
3 stops32h 47mMultiple Airlines
Tue 3/216:02SAL - LHR
3 stops33h 08mMultiple Airlines
Deal found 8/1£569
Wed 28/121:40LHR - SAL
1 stop24h 00mAvianca
Tue 3/208:00SAL - LHR
1 stop24h 35mAvianca
Deal found 7/1£571
Sun 1/321:40LHR - SAL
1 stop24h 00mAvianca
Tue 10/312:05SAL - LHR
1 stop20h 30mAvianca
Deal found 7/1£573
Fri 6/321:40LHR - SAL
2 stops38h 30mAvianca
Mon 16/308:10SAL - LHR
2 stops24h 25mAvianca
Deal found 8/1£577
Mon 23/321:40LHR - SAL
2 stops29h 25mAvianca
Tue 19/508:15SAL - LHR
2 stops24h 20mAvianca
Deal found 7/1£579

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 9 January 2026.
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

Sun 1/3

21:40-11:05

1 stop19h 25m

San Salvador El Salvador Intl

Tue 10/3

12:05-14:35

1 stop20h 30m

£573

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Wed 28/1

21:40-15:40

1 stop24h 00m

San Salvador El Salvador Intl

Tue 3/2

22:20-14:35

2 stops34h 15m

£576

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Fri 20/2

06:35-15:24

2 stops38h 49m

San Salvador El Salvador Intl

Mon 2/3

06:55-10:15

1 stop21h 20m

£606

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Fri 6/3

20:05-20:30

3 stops30h 25m

San Salvador El Salvador Intl

Mon 16/3

05:30-08:30

3 stops21h 00m

£614

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Thu 19/2

21:40-16:35

2 stops24h 55m

San Salvador El Salvador Intl

Wed 11/3

12:05-14:35

1 stop20h 30m

£627

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Fri 20/2

09:00-05:45

2 stops26h 45m

San Salvador El Salvador Intl

Tue 10/3

02:00-13:30

1 stop29h 30m

£630

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Wed 11/2

12:05-21:19

1 stop15h 14m

San Salvador El Salvador Intl

Wed 4/3

06:55-07:30

1 stop18h 35m

£631

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Wed 28/1

15:30-11:05

3 stops25h 35m

£355

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Sat 2/5

20:50-06:00

2 stops40h 10m

£364

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Thu 29/1

09:15-06:15

2 stops27h 00m

£379

Flights are sorted by cheapest return flights first.

Deals found on 7/1

Showing 1-10 of 14 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 2 January 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 £501). Flying from London Heathrow Airport to San Salvador in December is currently the most expensive (average of £623). 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 9 January 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
1,434 reviews
Check prices

Entertainment

7.1

Boarding

7.8

Food

7.2

Overall

7.7

Comfort

7.6

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
KLM
7.7
Good
1,434 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Entertainment

7.1

Boarding

7.8

Food

7.2

Overall

7.7

Comfort

7.6

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
United Airlines
7.4
Good
9,142 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Entertainment

7.1

Boarding

7.8

Food

7.2

Overall

7.7

Comfort

7.6

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Air Canada
7.1
Good
10,603 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Entertainment

7.1

Boarding

7.8

Food

7.2

Overall

7.7

Comfort

7.6

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Lufthansa
6.8
Okay
7,698 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Entertainment

7.1

Boarding

7.8

Food

7.2

Overall

7.7

Comfort

7.6

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Avianca
6.6
Okay
2,490 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Entertainment

7.1

Boarding

7.8

Food

7.2

Overall

7.7

Comfort

7.6

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

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 Avianca fly from London Heathrow Airport to San Salvador in about 19h 25m. 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 £492. Additional return tickets that might be worth considering are offered by United Airlines and KLM, with the lowest prices starting at £544 and £549, respectively. These flights start at 22% 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 £501). Flying from London Heathrow Airport to San Salvador in December is currently the most expensive (average of £623). 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 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 9 January 2026.
AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest£492Average£579FlexibilityNo cancel feeOn-time71%
Search Avianca flights
United AirlinesCheapest£544Average£637FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
KLMCheapest£549Average£572FlexibilityNo cancel feeOn-time75%
Search KLM flights
LufthansaCheapest£562Average£628FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air CanadaCheapest£598Average£783FlexibilityNo 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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