£40 Cheap flights to London Heathrow Airport

In general, when looking for the cheapest flight to London Heathrow Airport, try to choose a flight departing in January for the best deal.

From most locations, to find the best deals on airfare, our data shows that users booking 46 days before flying found the cheapest flight to London Heathrow Airport.

In general, booking your departure to London Heathrow Airport for a Wednesday represents the best deal on airfare. Try to avoid a Saturday departure to stay away from the highest prices.

Typically, cheap prices to London Heathrow Airport are most often found for Midday flights. Cheap prices are less likely for Afternoon flights.

Finding an alternative and possibly cheaper destination airport near London Heathrow Airport is possible. If you are planning a flight to London Heathrow Airport, consider booking flights to London City Airport (8 mi from London city centre), London Gatwick Airport (24 mi from London city centre), London Luton Airport (28 mi from London city centre), London Stansted Airport (31 mi from London city centre) or London Southend Airport (36 mi from London city centre).

The cheapest airport near London is typically London Luton Airport, with an average price of £124/person. These prices vary based on where travellers are coming from. It is suggested that travellers looking to save money try momondo’s Airport-to-Airport Pricing Tool.

Users booking trips to London from Oslo found flights 94% cheaper than the average price of flights to London. To find the cheapest price to London from your area, use momondo’s Airport-to-Airport Pricing Tool.

British Airways, KLM and easyJet are the top three most popular airlines that fly to London Heathrow Airport according to our data. British Airways is the first choice among our users, with 96% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 5 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

Prices for flights to London Heathrow Airport are updated daily.

As of September 2025, there are 83 operators available to choose from for flights to London Heathrow Airport.

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel to London Heathrow Airport.

The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.