Cheap flights from London Heathrow Airport to San Salvador from £512

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 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SAL
27 Dec — 3 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from London Heathrow to San Salvador El Salvador Intl are usually found in March or September, booked 79 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 27 November 2025.

Round-trip from

£539

One-way from

£512

Popular in

December

Cheapest in

March

Average price

£636
Lufthansa
  • Lufthansa
  • 7/3-17/3
  • 2 total stops
  • 66h 09m total
  • London to San Salvador
Avianca
  • Avianca
  • 12/1
  • 1 total stop
  • 19h 25m total
  • London to San Salvador
Highest demand for flights based on searches. 4% potential increase in price (£22 potential increase over avg. return price).
Cheapest flight prices on average. 1% potential price decrease (£10 potential savings vs. average return price).
Average for round-trip flights in November 2025

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 27 November 2025.

Wed 10/1208:00LHR - SAL
1 stop20h 47mLufthansa
Sun 18/116:40SAL - LHR
1 stop32h 50mLufthansa
Deal found 25/11£581
Wed 10/1208:00LHR - SAL
1 stop20h 47mLufthansa
Sun 11/116:40SAL - LHR
1 stop32h 50mLufthansa
Deal found 26/11£608
Wed 10/1207:40LHR - SAL
2 stops21h 07mUnited Airlines
Sun 18/116:40SAL - LHR
2 stops35h 00mUnited Airlines
Deal found 25/11£621
Wed 24/1212:05LHR - SAL
1 stop18h 31mUnited Airlines
Wed 31/1206:55SAL - LHR
1 stop18h 35mUnited Airlines
Deal found 24/11£622
Fri 26/1212:05LHR - SAL
1 stop18h 31mUnited Airlines
Tue 30/1223:54SAL - LHR
1 stop15h 26mUnited Airlines
Deal found 24/11£623
Thu 25/1210:00LHR - SAL
1 stop17h 19mLufthansa
Fri 16/116:40SAL - LHR
1 stop32h 50mLufthansa
Deal found 26/11£648
Tue 2/1212:05LHR - SAL
1 stop15h 14mUnited Airlines
Thu 25/1201:10SAL - LHR
2 stops25h 20mUnited Airlines
Deal found 24/11£651

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 27 November 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

Sat 7/3

10:00-12:19

1 stop32h 19m

San Salvador El Salvador Intl

Tue 17/3

15:40-07:30

1 stop33h 50m

£539

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Wed 18/2

21:40-06:10

2 stops38h 30m

San Salvador El Salvador Intl

Thu 19/3

08:00-14:35

1 stop24h 35m

£570

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Wed 10/12

08:00-22:47

1 stop20h 47m

San Salvador El Salvador Intl

Sun 18/1

16:40-07:30

1 stop32h 50m

£581

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Wed 10/12

12:00-22:47

1 stop16h 47m

San Salvador El Salvador Intl

Sun 11/1

16:40-07:30

1 stop32h 50m

£606

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Mon 19/1

11:10-05:45

2 stops48h 35m

San Salvador El Salvador Intl

Sun 1/2

16:40-06:40

2 stops32h 00m

£612

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Sat 7/2

10:00-21:19

1 stop17h 19m

San Salvador El Salvador Intl

Sat 21/2

14:50-07:30

1 stop34h 40m

£613

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Mon 4/5

07:25-20:17

2 stops19h 52m

San Salvador El Salvador Intl

Thu 28/5

01:15-06:35

2 stops22h 20m

£620

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Wed 10/12

07:40-22:47

2 stops21h 07m

San Salvador El Salvador Intl

Sun 18/1

16:40-09:40

2 stops35h 00m

£621

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Wed 24/12

12:05-00:36

1 stop18h 31m

San Salvador El Salvador Intl

Wed 31/12

06:55-09:40

2 stops20h 45m

£622

LondonSan Salvador

LHR - SAL

LHRSAL

London Heathrow

Fri 26/12

10:00-00:36

1 stop20h 36m

San Salvador El Salvador Intl

Mon 29/12

02:00-07:30

1 stop23h 30m

£623

Flights are sorted by cheapest return flights first.

Deals found on 24/11

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 21 November 2025.

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, June is the cheapest month in which you can book a flight from London Heathrow Airport to San Salvador (average of £499). Flying from London Heathrow Airport to San Salvador in May is currently the most expensive (average of £621). 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.

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 27 November 2025.

It’s optimal to fly from London Heathrow Airport to San Salvador at midday. By choosing this option you can save up to 51% 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 27 November 2025.
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.

Overall

7.7

Boarding

7.8

Food

7.2

Entertainment

7.1

Comfort

7.6

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Overall

7.7

Boarding

7.8

Food

7.2

Entertainment

7.1

Comfort

7.6

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Overall

7.7

Boarding

7.8

Food

7.2

Entertainment

7.1

Comfort

7.6

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Overall

7.7

Boarding

7.8

Food

7.2

Entertainment

7.1

Comfort

7.6

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Overall

7.7

Boarding

7.8

Food

7.2

Entertainment

7.1

Comfort

7.6

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Overall

7.7

Boarding

7.8

Food

7.2

Entertainment

7.1

Comfort

7.6

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

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 Lufthansa, Avianca, and United Airlines fly from London Heathrow Airport to San Salvador in about 32h 19m. The time it takes to get you to your destination can typically vary by up to 16h 16m. 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 £501. Additional return tickets that might be worth considering are offered by KLM and United Airlines, with the lowest prices starting at £559 and £561, respectively. These flights start at 21% 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, June is the cheapest month in which you can book a flight from London Heathrow Airport to San Salvador (average of £499). Flying from London Heathrow Airport to San Salvador in May is currently the most expensive (average of £621). 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

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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 27 November 2025.
AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest£501Average£591FlexibilityNo cancel feeOn-time71%
Search Avianca flights
KLMCheapest£559Average£603FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest£561Average£631FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£563Average£623FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air CanadaCheapest£604Average£777FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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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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