Cheap flights from London to District of Columbia from £326

The cheapest month to fly to District of Columbia from London is in September. Flight prices, which tend to average around £443, are often lower during this time because this is during the off-season. If you are unable to visit District of Columbia during the month of September, then departing from London during the month March is also very affordable. Most momondo users find prices during this month for around £474.

Our data shows that Friday is the least expensive day to fly to District of Columbia. Tickets to fly out on this day can be as low as £565. Flights from London to District of Columbia on a Sunday will generally be more expensive and average around £612. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

At midday is the cheapest time of day to fly from London to District of Columbia when you can find flight prices for as low as £569. Flying to District of Columbia at midday is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to District of Columbia is in the morning when prices are around £580.

Fly from London Heathrow to Washington, D.C. Dulles Intl for the best London - District of Columbia flight prices

You are more likely to see cheaper flights to District of Columbia from London when booking weeks ahead of your departure date. In general, you can expect to find flights to District of Columbia for around £537 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to District of Columbia from London for as low as £490 on momondo.

There are 4 cabin classes available to choose from on London to District of Columbia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

British Airways, JetBlue, and Iberia are the most popular carriers operating from London to District of Columbia

British Airways, Virgin Atlantic and Lufthansa are the top three most popular airlines that fly to District of Columbia from London according to our data. British Airways is the first choice among our users, with 41% of people opting to fly with this airline when travelling to District of Columbia. Keep in mind that there are 18 different airlines that fly to District of Columbia on a routine basis, so you have a few additional options to choose from.

The number of flights available between London and District of Columbia is 27 per day as of July 2026. The most frequent departure time is 12:00, with 100% of daily flights leaving in the afternoon.

The number of flights available between London and District of Columbia is 192 per week as of July 2026. The most frequent departure day is Tue, with 15% of weekly flights leaving on this day.