Find flights
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to San Salvador from £370

LHR — SAL
18 Sep — 25 Sep1
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

Mon 14/909:55 -
1 stop26h 35m
Sun 20/903:45 -
1 stop22h 25m
Deal found 17/8£627
Wed 16/913:40 -
1 stop31h 50m
Tue 29/906:00 -
1 stop18h 55m
Deal found 19/8£648
Sat 31/1010:05 -
2 stops33h 14m
Sun 15/1107:00 -
1 stop18h 50m
Deal found 18/8£649
Mon 7/906:50 -
2 stops21h 45m
Wed 23/913:50 -
1 stop14h 45m
Deal found 14/8£655
Wed 4/1106:50 -
2 stops21h 57m
Mon 16/1123:54 -
1 stop24h 26m
Deal found 16/8£657
Wed 9/917:55 -
2 stops34h 40m
Wed 16/913:50 -
1 stop34h 55m
Deal found 17/8£666
Sun 30/816:40 -
1 stop25h 49m
Fri 25/915:40 -
1 stop33h 15m
Deal found 14/8£675
Fri 4/916:15 -
2 stops29h 15m
Sat 12/906:00 -
1 stop18h 55m
Deal found 16/8£677
Sat 14/1110:05 -
2 stops33h 14m
Tue 1/1206:55 -
1 stop18h 45m
Deal found 17/8£682
Sun 30/817:55 -
2 stops25h 37m
Sun 27/913:57 -
2 stops32h 23m
Deal found 14/8£691
Sun 6/909:40 -
2 stops33h 52m
Fri 18/913:57 -
2 stops33h 23m
Deal found 17/8£693

Find flight deals from Heathrow to San Salvador

Round-trip from

£627

One-way from

£370

Popular in

September

Cheapest in

November

Average price

£712
14/9-20/9
  • 14/9-20/9
  • 2 total stops
  • 49h 00m total
  • London to San Salvador
Search Deals
21/9
  • 21/9
  • 1 total stop
  • 26h 35m total
  • London to San Salvador
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£28 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 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 London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Sat 5/9

20:05-12:32

2 stops23h 27m

San Salvador El Salvador Intl

Sun 20/9

13:57-13:15

1 stop16h 18m

£691

LondonSan Salvador

LHR London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Sun 30/8

13:25-12:32

1 stop30h 07m

San Salvador El Salvador Intl

Thu 24/9

13:57-13:15

1 stop16h 18m

£691

LondonSan Salvador

LHR London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Sat 5/9

15:15-12:32

1 stop28h 17m

San Salvador El Salvador Intl

Mon 21/9

13:57-13:15

1 stop16h 18m

£691

LondonSan Salvador

LHR London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Sun 30/8

17:55-12:32

2 stops25h 37m

San Salvador El Salvador Intl

Sun 27/9

13:57-05:20

2 stops32h 23m

£691

LondonSan Salvador

LHR London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Thu 3/9

11:45-12:32

2 stops31h 47m

San Salvador El Salvador Intl

Sun 20/9

13:57-13:15

1 stop16h 18m

£718

LondonSan Salvador

LHR London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Sat 31/10

07:40-20:19

2 stops18h 39m

San Salvador El Salvador Intl

Sat 14/11

01:10-06:20

2 stops23h 10m

£723

LondonSan Salvador

LHR London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Tue 8/9

08:00-20:49

2 stops19h 49m

San Salvador El Salvador Intl

Wed 16/9

06:00-07:45

1 stop18h 45m

£724
Fastest return journey

LondonSan Salvador

LHR London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Thu 17/9

12:00-21:35

1 stop16h 35m

San Salvador El Salvador Intl

Mon 21/9

13:50-11:35

1 stop14h 45m

£724
Cheapest one-way

LondonSan Salvador

LHR London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Mon 21/9

09:55-05:30

1 stop26h 35m

£370

LondonSan Salvador

LHR London Heathrow - SAL San Salvador El Salvador Intl

LHRSAL

London Heathrow

Sat 12/9

15:30-00:45

2 stops40h 15m

£394

Flights are sorted by cheapest return flights first.

Deals found on 15/8

Showing 1-10 of 12 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

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?

Booking 76 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, November is the cheapest month in which you can book a flight from London Heathrow Airport to San Salvador (average of £606). Flying from London Heathrow Airport to San Salvador in September is currently the most expensive (average of £806). 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.

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

Airfare is below average for this route at the moment.

London Heathrow Airport to San Salvador flights typically cost between £685 and £804 in September.
The cheapest return price found within the last 5 days was £627 on Multiple Airlines (14 Sept–20 Sept).

Reviews of airlines servicing San Salvador

Check out reviews from past customers who have flown with United Airlines,Air Canada, andLufthansa 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.
United Airlines
7.4
Good
10,104 reviews
Check prices

Crew

8.1

Overall

7.4

Food

6.7

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Tim,Sept 2025

LHR - IAD

The premium economy seats were very comfortable and the attention and service by the flight attendants was superb.
United Airlines
7.4
Good
10,104 reviews
United Airlines
7.4
Good
10,104 reviews
Check prices

Crew

8.1

Overall

7.4

Food

6.7

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Tim,Sept 2025

LHR - IAD

The premium economy seats were very comfortable and the attention and service by the flight attendants was superb.
Air Canada
7.1
Good
11,498 reviews
United Airlines
7.4
Good
10,104 reviews
Check prices

Crew

8.1

Overall

7.4

Food

6.7

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Tim,Sept 2025

LHR - IAD

The premium economy seats were very comfortable and the attention and service by the flight attendants was superb.
Lufthansa
6.8
Okay
8,199 reviews
United Airlines
7.4
Good
10,104 reviews
Check prices

Crew

8.1

Overall

7.4

Food

6.7

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Tim,Sept 2025

LHR - IAD

The premium economy seats were very comfortable and the attention and service by the flight attendants was superb.
Avianca
6.5
Okay
2,540 reviews
United Airlines
7.4
Good
10,104 reviews
Check prices

Crew

8.1

Overall

7.4

Food

6.7

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Tim,Sept 2025

LHR - IAD

The premium economy seats were very comfortable and the attention and service by the flight attendants was superb.

Related info for your journey

  • 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 4 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 Delta fly from London Heathrow Airport to San Salvador in about 23h 27m. 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 £498. Additional return tickets that might be worth considering are offered by United Airlines and Lufthansa, with the lowest prices starting at £551 and £590, respectively. These flights start at 28% 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, November is the cheapest month in which you can book a flight from London Heathrow Airport to San Salvador (average of £606). Flying from London Heathrow Airport to San Salvador in September is currently the most expensive (average of £806). 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

Alternative routes for Heathrow to San Salvador

Gatwick to San Salvador flights
London City to San Salvador flights
Stansted to San Salvador flights

Top 4 airlines flying from Heathrow to San Salvador

AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest£498Average£604FlexibilityNo cancel feeOn-time71%
Search Avianca flights
United AirlinesCheapest£551Average£683FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£590Average£682FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air CanadaCheapest£616Average£791FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

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.