Flight tickets from Belfast to Washington Dulles

Compare Belfast to Washington Dulles flight deals

Find the cheapest month or even day of the year to fly to Washington Dulles

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Flight deals from Belfast to Washington Dulles Airport

Looking for a cheap last-minute deal or the best return flight from Belfast to Washington Dulles? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Belfast to Washington Dulles

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Belfast to Washington Dulles flights are currently cheapest in September.

Belfast to Washington D.C.: Flight information

The things to know before you go.
Cheapest flight found₹ 64,407
Cheapest month to flySeptember

Finding cheap flights from Belfast to Washington Dulles: Frequently asked questions

The best price we found for a return flight from Belfast to Washington Dulles is ₹ 73,635. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Belfast to Washington Dulles. But we found flights with one stop from ₹ 73,635.
As of March 2026, there are no flights flying from Belfast to Washington Dulles.
The cheapest month to fly from Belfast to Washington Dulles is usually May.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Belfast to Washington Dulles Airport on Wednesday, 13 May 2026.
No airlines currently offer direct flights between Belfast and Washington Dulles Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Washington Dulles but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Washington D.C. is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Washington Dulles is British Airways .

Travelling from Belfast to Washington Dulles International Airport (IAD): What you need to know

  • Washington DC is five hours behind Belfast. Washington Dulles International Airport is located in Washington DC, which is in the UTC-5 timezone.

  • Get to the airport on time so you don't miss your flight from Belfast to IAD. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid any last-minute rush.

  • During popular months such as June, it's a good idea to get to the airport earlier than normal. Plan to arrive two hours before a domestic departure and four hours ahead of international flights whenever you're travelling during peak periods in general.

Airports in Belfast

Belfast International Airport (BFS)

  • We make it a piece of cake to book cheap flights from Belfast to IAD that include a stopover. To explore the options leaving from Belfast International Airport (BFS), uncheck 'Direct flights only.' Then, select a flight with a stop long enough to tour your chosen city. Major stopovers between BFS and IAD include:

    • Paris Charles de Gaulle Airport (CDG)

    • Geneva Airport (GVA)

    • Edinburgh Airport (EDI)

  • Located around 19 kilometres from the centre of Belfast, BFS can be reached in about 25 minutes by car, depending on traffic. The journey on public transport takes roughly 45 minutes.

  • Want an easy start to your journey? Stay near Belfast International Airport. Whether you're boarding an early flight from Belfast to Washington Dulles International Airport or prefer not to rush, these hotels are just what you're after:

  • 68% of flights that take off from Belfast International Airport touch down at their destination on time.

George Best Belfast City Airport (BHD)

  • Check a new destination off your list or just take some time to unwind with a stopover. If you'd like to break up your flight from Belfast to Washington Dulles International Airport, check out these options when leaving from George Best Belfast City Airport:

    • London Heathrow Airport (LHR)

    • Frankfurt Airport (FRA)

    • Edinburgh Airport (EDI)

  • BHD is about 5 kilometres from central Belfast. It'll take 15 minutes or so to get to the airport driving from the city centre. Public transport takes approximately 25 minutes.

  • Get a head start on your holiday with an additional night away from home. Before your Belfast to IAD flight, kick back in one of these hotels close to George Best Belfast City Airport:

  • When it comes to keeping flights on track, George Best Belfast City Airport has an on-time arrival performance of 69%.

About Washington Dulles International Airport (IAD)

Getting from Washington Dulles International Airport (IAD) to central Washington DC

  • From Washington Dulles International Airport, central Washington DC is around 40 kilometres away. It takes about 45 minutes to reach the city centre by car.

  • When travelling on public transport, expect a journey of around 1 hour 10 minutes.

How to find the cheapest flights from Belfast to Washington Dulles International Airport (IAD)

  • The cheapest price we've found for a one-way ticket from Belfast to Washington Dulles International Airport is ₹ 64,407. For a return flight on this route, the best price is ₹ 73,635. Depending on how early you book and the availability, these fares could change.

  • Don't leave everything to the last moment. You're more likely to walk away with cheap flights from Belfast to IAD if you book early. Airlines often offer some amazing early bird deals.

  • Cheap Belfast to Washington Dulles International Airport tickets are easier to find if your travel dates are flexible. Use the 'Whole month' search tool to compare fares across each month and then fly out on the cheapest day.

  • Finding a cheap plane ticket from Belfast to IAD couldn't be easier with Price Alerts. Simply create one of these automatic alerts and we'll let you know as soon as a lower fare pops up.

  • Bag the best deal on a flight from Belfast to Washington Dulles International Airport with the help of the filters. Pick your preferred arrival and departure times, number of stops and airlines. You can also sort your results by 'Fastest,' 'Cheapest' or 'Best.'

The best time to fly from Belfast to Washington Dulles International Airport (IAD)

  • Think about your travel style when picking your flight dates. February is the quietest month to visit Washington DC. May is when most people book flights from Belfast to Washington Dulles International Airport (IAD), which may be perfect if you're chasing more action.

  • Lock in a Belfast to IAD plane ticket departing in July if you're eager to experience the city during its warmest month. You can expect temperatures in Washington DC to range from 19ºC to 33ºC.

  • If you like travelling in cooler conditions, look for a cheap ticket from Belfast to Washington Dulles International Airport in January when temperatures are between -6ºC and 10ºC.

More about Washington DC

Explore more of the United States

  • You've visited Washington DC, now it's time to explore other corners of the United States. Journey about 225 kilometres northeast to Philadelphia to check off its leading sights. From Independence Hall to Liberty Bell and Philadelphia Museum of Art, there's plenty to keep you busy.

  • If you're ready to explore another major destination in the United States, head for Virginia Beach, roughly 274 kilometres southeast of Washington DC. Virginia Beach Oceanfront, Virginia Beach Boardwalk and Resort Beach are among its highlights.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.