Cheap flights from London Heathrow Airport to District of Columbia from £329

The cheapest month to fly to District of Columbia from London Heathrow Airport is in February. Flight prices, which tend to average around £473, 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 February, then departing from London Heathrow Airport during the month September is also very affordable. Most momondo users find prices during this month for around £482.

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 £560. Flights from London Heathrow Airport to District of Columbia on a Sunday will generally be more expensive and average around £614. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

In the afternoon is the cheapest time of day to fly from London Heathrow Airport to District of Columbia when you can find flight prices for as low as £571. Flying to District of Columbia in the afternoon 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 £578.

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

You are more likely to see cheaper flights to District of Columbia from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to District of Columbia for around £539 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 Heathrow Airport for as low as £492 on momondo.

There are 4 cabin classes available to choose from on London Heathrow Airport 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 and Finnair are the most popular carriers operating from London Heathrow 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 Heathrow Airport 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.

As of August 2026, there are 25 flights per day flying from London Heathrow Airport to District of Columbia. The most common time of day flights depart is 12:00, with 100% of flights taking off in the afternoon.

As of August 2026, 178 flights take off from London Heathrow Airport and land in District of Columbia each week. The most common flight departure day for this route is Fri, with 16% of weekly flights taking off on this day.