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

A quick flight from San Salvador to London Heathrow Airport can take about 19h 18m. KLM provides one of the quickest options available for as low as £711. The distance between San Salvador and London Heathrow Airport is about 5431 mi. Both multi-stop and direct flights can be found to your destination and back.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What is the cheapest time of day to fly from SAL to LHR?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from San Salvador to London Heathrow Airport as you normally would.

What airport do you fly from for flights from San Salvador to London Heathrow?

Located just 20.5 mi from the city center, San Salvador El Salvador Intl is the airport most travelers will use when flying to London Heathrow from San Salvador. Booking flights from El Salvador Intl (SAL) to London Heathrow should be relatively easy as there are 0 daily outbound flights to London Heathrow from 0 different airlines.

Can I find deals for flights from San Salvador to Heathrow that include hotel bookings?

Yes. In addition to deals on San Salvador to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from San Salvador to Heathrow?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Salvador to Heathrow.

Can I find deals for business class flights from San Salvador to Heathrow?

Yes. Cheapflights offers flight deals from San Salvador to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£411+ Cheap Flights from San Salvador to London Heathrow Airport

Cheap flight deals from San Salvador to Heathrow

Enter your travel dates to find the best prices.

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Best

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Cheapest flights from San Salvador to Heathrow
Explore the most affordable flight options available from San Salvador to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 August 2026.

Mon 14/913:57 -

1 stop14h 23m

Wed 23/911:45 -

2 stops31h 46m

Deal found 20/8£687

Sun 4/1013:57 -

1 stop16h 18m

Sun 11/1015:15 -

1 stop28h 17m

Deal found 20/8£688

Tue 6/1013:57 -

1 stop16h 18m

Tue 13/1015:15 -

1 stop28h 17m

Deal found 22/8£693

Tue 1/1208:30 -

1 stop17h 55m

Sat 2/119:40 -

1 stop35h 05m

Deal found 24/8£715

Mon 26/1013:57 -

1 stop15h 43m

Tue 10/1111:30 -

2 stops32h 32m

Deal found 20/8£720

Find flight deals from San Salvador to Heathrow

Round-trip from	£687
One-way from	£411
Popular in	July
Cheapest in	October
Average price	£883

KLM
14/9-23/9
3 total stops
46h 09m total
San Salvador to London

Search Deals

31/1
2 total stops
39h 42m total
San Salvador to London

Search Deals

Highest demand for flights based on searches. 7% potential increase in price (£52 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (£8 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Mon 14/9

13:57-16:15

2 stops19h 18m

London Heathrow

Mon 21/9

11:45-12:31

2 stops31h 46m

£711

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Mon 14/9

13:57-16:15

2 stops19h 18m

London Heathrow

Wed 23/9

11:45-12:31

2 stops31h 46m

£711

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Fri 18/9

13:57-11:20

1 stop14h 23m

London Heathrow

Wed 30/9

11:45-12:31

2 stops31h 46m

£757

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Tue 13/10

02:00-10:10

1 stop25h 10m

London Heathrow

Wed 21/10

13:05-04:50

1 stop22h 45m

£843

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Mon 2/11

23:54-21:20

1 stop15h 26m

London Heathrow

Tue 10/11

10:00-21:19

1 stop17h 19m

£844

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Sat 5/9

13:57-16:15

2 stops19h 18m

London Heathrow

Thu 8/10

11:45-12:32

2 stops31h 47m

£881

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Fri 4/9

22:45-21:25

1 stop15h 40m

London Heathrow

Sun 13/9

10:00-20:49

1 stop17h 49m

£927

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Sat 5/9

06:00-08:30

2 stops19h 30m

London Heathrow

Thu 8/10

07:45-20:49

2 stops20h 04m

£933

Fastest return journey

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Fri 4/9

12:29-09:25

1 stop13h 56m

London Heathrow

Sun 13/9

06:15-17:55

1 stop18h 40m

£943

Cheapest one-way

San SalvadorLondon

SAL San Salvador El Salvador Intl - LHR London Heathrow

SALLHR

San Salvador El Salvador Intl

Sun 31/1

15:08-12:50

2 stops39h 42m

£411

Flights are sorted by cheapest return flights first.

Deals found on 22/8

Showing 1-10 of 12 resultsSorted by cheapest first

Best time to book a flight from San Salvador to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from San Salvador with our price prediction graph.

SAL-LHR

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 San Salvador to London Heathrow Airport

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

Airfare is below average for this route at the moment.

San Salvador to London Heathrow Airport flights typically cost between £849 and £1,018 in September.
The cheapest return price found within the last 5 days was £687 on KLM (14 Sept–23 Sept).

Related info for your journey

What airport do you fly from for flights from San Salvador to London Heathrow?
Located just 20.5 mi from the city center, San Salvador El Salvador Intl is the airport most travelers will use when flying to London Heathrow from San Salvador. Booking flights from El Salvador Intl (SAL) to London Heathrow should be relatively easy as there are 0 daily outbound flights to London Heathrow from 0 different airlines.
How long is the flight from San Salvador to London Heathrow Airport?
A quick flight from San Salvador to London Heathrow Airport can take about 19h 18m. KLM provides one of the quickest options available for as low as £711. The distance between San Salvador and London Heathrow Airport is about 5431 mi. Both multi-stop and direct flights can be found to your destination and back.
Can I find deals for flights from San Salvador to Heathrow that include hotel bookings?
Yes. In addition to deals on San Salvador to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from San Salvador to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Salvador to Heathrow.
Can I find deals for business class flights from San Salvador to Heathrow?
Yes. Cheapflights offers flight deals from San Salvador to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Can Cheapflights find flights from San Salvador to Heathrow with no change fees?

Need flexible booking options for your flight to Heathrow from San Salvador? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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Cheap flights from San Salvador to London Heathrow Airport from £411

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 31/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from San Salvador to Heathrow

Cheapest flights from San Salvador to HeathrowExplore the most affordable flight options available from San Salvador to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 August 2026.

Explore the most affordable flight options available from San Salvador to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 August 2026.

Best flights from San Salvador to HeathrowDiscover carefully curated flight deals from San Salvador to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 25 August 2026.

Discover carefully curated flight deals from San Salvador to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 25 August 2026.

Last-minute flights from San Salvador to HeathrowDiscover last-minute flight deals from San Salvador to Heathrow. Data last updated 25 August 2026 and is based on user searches.

Discover last-minute flight deals from San Salvador to Heathrow. Data last updated 25 August 2026 and is based on user searches.

One-way flights from San Salvador to HeathrowSearch for one-way flight options from San Salvador to Heathrow. Find affordable one-way fares based on user searches. Data last updated 25 August 2026.

Search for one-way flight options from San Salvador to Heathrow. Find affordable one-way fares based on user searches. Data last updated 25 August 2026.

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

Best time to book a flight from San Salvador to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from San Salvador with our price prediction graph.

Cheapflights Insights

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

Airfare is below average for this route at the moment.

San Salvador to London Heathrow Airport flights typically cost between £849 and £1,018 in September.The cheapest return price found within the last 5 days was £687 on KLM (14 Sept–23 Sept).

Related info for your journey

What airport do you fly from for flights from San Salvador to London Heathrow?

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

Can I find deals for flights from San Salvador to Heathrow that include hotel bookings?

How can I find direct flights from San Salvador to Heathrow?

Can I find deals for business class flights from San Salvador to Heathrow?

Travelling to a place near London Heathrow Airport?

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 San Salvador to Heathrow

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Other flights to Heathrow

Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 25 August 2026.

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Why should you use Cheapflights to find cheap flight tickets from San Salvador to Heathrow?

Can Cheapflights find flights from San Salvador to Heathrow with no change fees?

Can Cheapflights notify me if prices for flights from San Salvador to Heathrow become cheaper?

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Cheapest flights from San Salvador to Heathrow
Explore the most affordable flight options available from San Salvador to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 August 2026.

Best flights from San Salvador to Heathrow
Discover carefully curated flight deals from San Salvador to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 25 August 2026.

Last-minute flights from San Salvador to Heathrow
Discover last-minute flight deals from San Salvador to Heathrow. Data last updated 25 August 2026 and is based on user searches.

One-way flights from San Salvador to Heathrow
Search for one-way flight options from San Salvador to Heathrow. Find affordable one-way fares based on user searches. Data last updated 25 August 2026.

San Salvador to London Heathrow Airport flights typically cost between £849 and £1,018 in September.
The cheapest return price found within the last 5 days was £687 on KLM (14 Sept–23 Sept).