Find flights
When to book
FAQs

Cheap flights from San Salvador to London Heathrow Airport from £425

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 20/7. Fares are subject to change and may not be available on all flights or dates of travel.
SAL — LHR
27 Jul — 3 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from San Salvador to Heathrow

Enter your travel dates to find the best prices.

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 27 June 2026.

Fri 11/913:57
SAL
-
LHR
1 stop16h 18m
KLM
Sun 27/909:20
LHR
-
SAL
1 stop34h 11m
KLM
Deal found 25/6£704
Mon 14/913:57
SAL
-
LHR
1 stop16h 18m
KLM
Wed 23/911:15
LHR
-
SAL
1 stop32h 16m
KLM
Deal found 23/6£705
Sun 25/1013:39
SAL
-
LHR
1 stop16h 01m
KLM
Sat 31/1012:30
LHR
-
SAL
1 stop30h 54m
KLM
Deal found 22/6£706
Sat 12/913:57
SAL
-
LHR
1 stop14h 23m
KLM
Sun 27/913:25
LHR
-
SAL
1 stop30h 06m
KLM
Deal found 22/6£736
Tue 1/913:57
SAL
-
LHR
1 stop16h 18m
KLM
Wed 30/915:15
LHR
-
SAL
1 stop28h 16m
KLM
Deal found 25/6£744
Sat 5/913:57
SAL
-
LHR
1 stop16h 18m
KLM
Thu 8/1013:25
LHR
-
SAL
1 stop29h 59m
KLM
Deal found 24/6£744
Sat 5/913:57
SAL
-
LHR
2 stops19h 18m
KLM
Sat 3/1009:20
LHR
-
SAL
1 stop34h 11m
KLM
Deal found 22/6£763
Wed 14/1013:39
SAL
-
LHR
2 stops19h 36m
KLM
Wed 21/1015:15
LHR
-
SAL
1 stop28h 09m
KLM
Deal found 27/6£767
Mon 26/1013:39
SAL
-
LHR
2 stops18h 11m
KLM
Tue 10/1110:45
LHR
-
SAL
1 stop32h 25m
KLM
Deal found 22/6£769

Find flight deals from San Salvador to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from San Salvador (SAL) to Heathrow (LHR). 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 June 2026.

Round-trip from

£704

One-way from

£425

Popular in

August

Cheapest in

October

Average price

£957
KLM
  • KLM
  • 11/9-27/9
  • 2 total stops
  • 50h 29m total
  • San Salvador to London
Search Deals
20/7
  • 20/7
  • 2 total stops
  • 24h 41m total
  • San Salvador to London
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£96 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£32 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from San Salvador to Heathrow 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 June 2026.
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 - LHR

SALLHR

San Salvador El Salvador Intl

Wed 5/8

01:15-11:35

1 stop27h 20m

London Heathrow

Wed 19/8

06:50-21:35

2 stops21h 45m

£856

San SalvadorLondon

SAL - LHR

SALLHR

San Salvador El Salvador Intl

Sat 31/10

01:10-07:10

2 stops24h 00m

London Heathrow

Tue 10/11

06:50-22:47

2 stops21h 57m

£862

San SalvadorLondon

SAL - LHR

SALLHR

San Salvador El Salvador Intl

Thu 20/8

15:40-06:45

2 stops32h 05m

London Heathrow

Sun 20/9

13:05-04:50

1 stop22h 45m

£870

San SalvadorLondon

SAL - LHR

SALLHR

San Salvador El Salvador Intl

Tue 1/9

06:00-09:00

2 stops20h 00m

London Heathrow

Wed 30/9

07:45-20:49

2 stops20h 04m

£874
Fastest return journey

San SalvadorLondon

SAL - LHR

SALLHR

San Salvador El Salvador Intl

Tue 21/7

13:48-16:15

2 stops19h 27m

London Heathrow

Mon 24/8

11:30-23:34

2 stops19h 04m

£918

San SalvadorLondon

SAL - LHR

SALLHR

San Salvador El Salvador Intl

Mon 13/7

13:48-17:35

2 stops20h 47m

London Heathrow

Fri 14/8

06:30-20:31

2 stops21h 01m

£945

San SalvadorLondon

SAL - LHR

SALLHR

San Salvador El Salvador Intl

Sat 5/9

11:50-16:25

3 stops21h 35m

London Heathrow

Thu 8/10

07:05-21:55

3 stops21h 50m

£959

San SalvadorLondon

SAL - LHR

SALLHR

San Salvador El Salvador Intl

Sun 25/10

20:45-18:15

1 stop15h 30m

London Heathrow

Sat 31/10

18:45-19:15

2 stops30h 30m

£969
Cheapest one-way

San SalvadorLondon

SAL - LHR

SALLHR

San Salvador El Salvador Intl

Thu 13/8

09:35-11:00

2 stops18h 25m

£488

San SalvadorLondon

SAL - LHR

SALLHR

San Salvador El Salvador Intl

Thu 5/11

14:39-17:00

2 stops20h 21m

£490

Flights are sorted by cheapest return flights first.

Deals found on 26/6

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

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.
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?

Related info for your journey

Find useful and relevant information for your journey from San Salvador to Heathrow. 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 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 27h 20m. United Airlines provides one of the quickest options available for as low as £856. The distance between San Salvador and London Heathrow Airport is about 5431 mi.

  • 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.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Milton Keynes
Wembley
Luton
Gatwick
Croydon
Ilford
Slough
Hayes
Brentford
Colchester
Northampton
Kingston upon Thames
Swindon
Eastbourne
Watford
Poole
Southall
Romford
Ipswich

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

See prices for flight routes from nearby airports that may be better suited for you.
San Salvador to Gatwick 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 San Salvador to Heathrow?

Cheapflights makes it easy to find San Salvador to Heathrow flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Millions of users choose and trust Cheapflights to book the best flight deals from San Salvador to Heathrow 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 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.

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

Yes! Start tracking prices for San Salvador to Heathrow flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your 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.