Search and book cheap flights from Belfast Aldergrove International Airport to Washington DC with Netflights. There are two airlines offering flights in and out of Washington DC, the most popular being KLM.
There are ten flights from Belfast Aldergrove International Airport to or via Washington DC every week, with the journey taking 16 hrs 45 mins on average.
Washington DC has one airports, so you have more than one option. It could also be worth changing Belfast Aldergrove International Airport to include other airports, to see more flights and, possibly, better prices.
Booking a flight to Washington DC with Netflights is easy. You can search by month to see the cheapest day of the week to fly. Plus, you can add accommodation and car hire to your booking.