Cheap flights from the United Kingdom to London from £17

The cheapest month to fly to London from United Kingdom is in November. Flight prices, which tend to average around £91, are often lower during this time because this is during the off-season. The month of December is another great option to travel to London, with average flight prices from United Kingdom averaging around £93.

Our data shows that Sunday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £629. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from United Kingdom to London for around £657.

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as £573. Flights in the morning are often more expensive, with an average ticket price of £655.

Fly from Glasgow Intl to London Stansted for the best United Kingdom - London flight prices

No. A direct flight is the cheapest option for a flight between United Kingdom to London.

Ryanair, easyJet, and British Airways are the most popular carriers operating from United Kingdom to London

British Airways, easyJet and Ryanair are the top three most popular airlines that fly to London from United Kingdom according to our data. British Airways is the first choice among our users, with 69% of people opting to fly with this airline when travelling to London. Keep in mind that there are 6 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

Historically, on average around 14% of flights between United Kingdom and London have experienced a delay on any given week. The average delay length over the past 12 months has been 101 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, British Airways have had the fewest delays on this route over the last 12 months, with about 13% of their flights experiencing any sort of delay.

The number of flights available between United Kingdom and London is 44 per day as of May 2026. The most frequent departure time is 19:00, with 35% of daily flights leaving at midday.

310 flights are operational weekly from United Kingdom to London as of May 2026. The most popular departure day for this route is Sun, with 41% of flights per week taking off on this day.