Cheap flights from Washington, D.C. to Belgium from $230

In general, November is the cheapest month to fly from Washington, D.C. to Belgium. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $656. If you are unable to visit Belgium during the month of November, then departing from Washington, D.C. during the month January is also very affordable. Most momondo users find prices during this month for around $675.

Our data shows that Wednesday is the least expensive day to fly to Belgium. Tickets to fly out on this day can be as low as $1,231. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $1,389. These prices are subject to change though, so be sure to set up a Price Alert for flights to Belgium.

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

You are more likely to see cheaper flights to Belgium from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Belgium for around $869 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Belgium from Washington, D.C. for as low as $734 on momondo.

There are 3 cabin classes available to choose from on Washington, D.C. to Belgium 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 45% on your flight if you consider stops on a Washington, D.C. to Belgium flight.

Delta, Icelandair, and KLM are the most popular carriers operating from Washington, D.C. to Belgium

United Airlines, Scandinavian Airlines and Aer Lingus are the top three most popular airlines that fly to Belgium from Washington, D.C. according to our data. United Airlines is the first choice among our users, with 32% of people opting to fly with this airline when traveling to Belgium. Keep in mind that there are 8 different airlines that fly to Belgium on a routine basis, so you have a few additional options to choose from.

7 flights are operational daily from Washington, D.C. to Belgium as of September 2026. The most popular departure time for this route is 5:00PM, with 100% of flights per day taking off in the afternoon.

The number of flights available between Washington, D.C. and Belgium is 51 per week as of September 2026. The most frequent departure day is Mon, with 16% of weekly flights leaving on this day.