Cheap Flights from London (LHR) to San Salvador (ILS)

Popular airlines from Heathrow Airport (LHR) to San Salvador (ILS-Ilopango)

Frequently asked questions

How much does a flight from Heathrow Airport (LHR) to Ilopango Airport (ILS) cost?
Grab a cheap one-way flight or cheap return flight from Heathrow Airport (LHR) to Ilopango Airport (ILS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Heathrow Airport (LHR) to Ilopango Airport (ILS)?
is the most affordable month to fly from LHR to ILS. Planning your trip for the off-season is often the key to better flight prices.
What is the cheapest airline that flies from Heathrow Airport (LHR) to Ilopango Airport (ILS)?
To find the cheapest airline that'll fly you from LHR to ILS, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Heathrow Airport (LHR) to Ilopango Airport (ILS)?
There are no daily nonstop flights available from Heathrow Airport (LHR) to Ilopango Airport (ILS). But you can choose flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from LHR to ILS?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can change depending on a number of factors, including the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Heathrow Airport (LHR) to Ilopango Airport (ILS)?
Select a flight from Heathrow Airport (LHR) to Ilopango Airport (ILS) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Later departures are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Heathrow Airport (LHR) to Ilopango Airport (ILS) last-minute?
Holding off until right before your break to book a ticket from LHR to ILS often results in higher prices. While you may find some last-minute discounts, they aren't always guaranteed. Be flexible with your travel plans to maximize your chances of getting a bargain.
Is it cheaper to book a LHR to ILS flight and hotel package?
Compared with arranging hotels and flights separately, booking a LHR to ILS flight and hotel package with Expedia could result in significant savings. Better still, managing everything in one place will take the stress out of planning your trip. Simply secure your flights and select from our wide range of stays, then customize your trip with other add-ons like tours, car rentals and activities.
Can I cancel or change the date of my flight from Heathrow Airport (LHR) to Ilopango Airport (ILS)?
If you booked your LHR to ILS flight in the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of fare you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Heathrow
Destination airport
Ilopango
Distance
5423 mi

Book with confidence

London to San Salvador Flights

The cheapest times to fly from London to San Salvador

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from London to San Salvador are during the month of . You can find some of the cheapest flights from London to San Salvador with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from London to San Salvador

Sunday is one of the best days to book for cheap flights from London to San Salvador: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from London to San Salvador

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from London to San Salvador in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap London to San Salvador flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your London to San Salvador airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

London to San Salvador Flights
*Available to One Key members.