Cheap flights from London Heathrow Airport to District of Columbia from $522

In general, January is the cheapest month to fly from London Heathrow Airport to District of Columbia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $613. If you don’t want to visit District of Columbia in January, then you should wait until September to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of $637.

The cheapest day to depart on your flight to District of Columbia is on a Thursday when prices can be found for as low as $748. This is often the case because there is less demand to fly during this day of the week. On the other hand, Tuesday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $900.

Flying to District of Columbia from London Heathrow Airport in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $806 when looking at flights departing in the afternoon. Flights to District of Columbia are more costly at noon, with an average ticket price of $841. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

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 $740 when searching weeks out. 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 $691 on momondo.

There are 4 cabin classes available to choose from on London Heathrow 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.

JetBlue, United Airlines, and Austrian Airlines are the most popular carriers operating from London Heathrow to District of Columbia

British Airways, Delta and United Airlines 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 58% of people opting to fly with this airline when traveling to District of Columbia. Keep in mind that there are 12 different airlines that fly to District of Columbia on a routine basis, so you have a few additional options to choose from.

As of March 2026, there are 23 flights per day flying from London Heathrow Airport to District of Columbia. The most common time of day flights depart is 4:00PM, with 100% of flights taking off in the afternoon.

As of March 2026, 165 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 Tue, with 16% of weekly flights taking off on this day.