Destinations · 5 min read
Cheap Flights to London: When to Book, Airports & Money-Saving Tips
Published October 13, 2026
Looking for cheap flights to London? Fares to London change constantly, but knowing when to book and which airport to use can save you a lot. Here's what to know.
Airports serving London
Most travelers arrive at Heathrow (LHR), Gatwick (LGW), Stansted (STN) and Luton (LTN).
Cheapest time to fly to London
Fares are usually lowest in January to March and November. The best weather is generally May to September, when prices rise — book 2–4 months ahead if that's when you'll go.
Our top money-saving tip
Gatwick often has cheaper transatlantic fares than Heathrow.
Tuesday, Wednesday and Saturday departures are often cheaper, and staying flexible by a day or two can cut the fare.
Why visit London
Travelers love London for royal history, free museums, theatre, markets and pubs.
Before you go
Many visitors now need a UK Electronic Travel Authorisation (ETA). Always confirm entry rules with official government sources before you fly.
Book now, pay over 6 months
Found a good fare? Paylo prices include all taxes and fees, and you can pay in full, use pay-later providers, or split your trip to London into 6 monthly payments with no credit check.