Cheap flights from Washington, D.C. to Brussels from $232

The cheapest month to fly to Brussels Bruxelles-National Airport from Washington, D.C. is in January. Flight prices, which tend to average around $675, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Brussels Bruxelles-National Airport from Washington, D.C. during October instead. Flights to Brussels Bruxelles-National Airport in October, while not as cheap as those in January, still average around $688.

The cheapest day to depart from Washington, D.C. to Brussels Bruxelles-National Airport is on a Thursday. Travelers who choose to depart for Brussels Bruxelles-National Airport on a Thursday will often find tickets for as low as $1,217. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. to Brussels Bruxelles-National Airport for around $1,389.

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

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

Icelandair, Scandinavian Airlines, and KLM are the most popular carriers operating from Washington, D.C. to Brussels Bruxelles-National

United Airlines, Scandinavian Airlines and Aer Lingus are the top three most popular airlines that fly to Brussels Bruxelles-National Airport from Washington, D.C. according to our data. United Airlines is the first choice among our users, with 31% of people opting to fly with this airline when traveling to Brussels Bruxelles-National Airport. Keep in mind that there are 8 different airlines that fly to Brussels Bruxelles-National Airport on a routine basis, so you have a few additional options to choose from.

Dublin (DUB) was the most common stop: 30% of momondo users choosing 1-stop flights on this route connected there.

Flights via Lisbon (LIS) offer the lowest average round-trip price of $467.

Flights connecting via Reykjavik (KEF) have the shortest average one-way travel time: 10h 19m.

Reykjavik (KEF) has the shortest average layover time for this route: 1h 24m.

6 flights are operational daily from Washington, D.C. to Brussels Bruxelles-National Airport 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 Brussels Bruxelles-National Airport is 44 per week as of September 2026. The most frequent departure day is Mon, with 18% of weekly flights leaving on this day.