Cheap flights from Belgium to Washington, D.C. from $382

The month of September is, on average, the cheapest month to fly to Washington, D.C. from Belgium, with most prices found around $534. If you’re not able to fly to Washington, D.C. in September, then May is your next best option. Flight prices from Belgium to Washington, D.C. during May average around $584.

On average, the least expensive day to fly to Washington, D.C. from Belgium is on a Friday. momondo users have found tickets for Friday departures for as low as $721. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Belgium to Washington, D.C. for around $848.

Fly from Brussels Bruxelles-National to Washington, D.C. Dulles Intl for the best Belgium - Washington, D.C. flight prices

You are more likely to see cheaper flights to Washington, D.C. from Belgium when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around $643 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from Belgium for as low as $533 on momondo.

There are 3 cabin classes available to choose from on Belgium 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 21% on your flight if you consider stops on a Belgium to Washington, D.C. flight.

Aer Lingus, British Airways, and Finnair are the most popular carriers operating from Belgium to Washington, D.C.

United Airlines, Brussels Airlines and Lufthansa are the top three most popular airlines that fly to Washington, D.C. from Belgium according to our data. United Airlines is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 5 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

Historically, on average around 16% of flights between Belgium and Washington, D.C. have experienced a delay on any given week. The average delay length over the past 12 months has been 139 minutes.

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

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

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

5 flights are operational daily from Belgium to Washington, D.C. as of March 2026. The most popular departure time for this route is 11:00AM, with 100% of flights per day taking off at noon.

As of March 2026, 36 flights take off from Belgium and land in Washington, D.C. each week. The most common flight departure day for this route is Mon, with 17% of weekly flights taking off on this day.