Cheap flights from London Heathrow Airport to Washington, D.C. from ₹ 49,606

In general, September is the cheapest month to fly from London Heathrow Airport to Washington, D.C.. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around ₹ 61,960. The month of February is another great option to travel to Washington, D.C., with average flight prices from London Heathrow Airport averaging around ₹ 62,150.

Our most recent data shows that the best time of day to fly to Washington, D.C. is at midday. Flights from London Heathrow Airport to Washington, D.C. during this time can be as low as ₹ 55,670. Flights in the afternoon are often more expensive, with an average ticket price of ₹ 92,603.

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

You are more likely to see cheaper flights to Washington, D.C. from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around ₹ 69,419 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from London Heathrow Airport for as low as ₹ 61,294 on momondo.

There are 2 cabin classes available to choose from on London Heathrow Airport to Washington, D.C. flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 2% on your flight if you consider stops on a London Heathrow Airport to Washington, D.C. flight.

Historically, on average around 16% of flights between London and Washington, D.C. have experienced a delay on any given week. The average delay length over the past 12 months has been 140 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.

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

According to our data, United Airlines have had the fewest delays on this route over the last 12 months, with about 10% of their flights experiencing any sort of delay.

The number of flights available between London Heathrow Airport and Washington, D.C. is 12 per day as of October 2026. The most frequent departure time is 16:00, with 100% of daily flights leaving in the afternoon.

As of October 2026, there are 86 flights per week flying from London Heathrow Airport to Washington, D.C.. The most common day of the week flights depart is Thu, with 31% of flights taking off on this day.