Cheap Flights from Washington Dulles to Belfast

Compare Washington Dulles to Belfast flight deals

Find the cheapest month or even day of the year to fly to Belfast

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Flight deals from Washington Dulles to Belfast

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

Find the cheapest month to fly from Washington Dulles to Belfast

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

Alternative Washington Dulles to Belfast routes

Looking for the cheapest, fastest or easiest route from Washington Dulles to Belfast? You could fly into the following airports instead.

Washington D.C. to Belfast: Flight information

The things to know before you go.
Cheapest flight foundRs64,417
Cheapest month to flyMarch

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

There are 2 airports in Belfast: Belfast City and Belfast International.
The best price we found for a return flight from Washington Dulles to Belfast is Rs176,087. 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 Washington Dulles to Belfast. But we found flights with one or more stops from Rs176,087.
As of February 2026, there are no flights flying from Washington Dulles to Belfast.
The cheapest month to fly from Washington Dulles to Belfast is usually April.
If you're flying from Washington Dulles Airport, the cheapest airport near Belfast is Belfast International – which is 19.6 km away from the centre of Belfast. We've found flights into this airport from Rs176,087.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Washington Dulles Airport to Belfast on Wednesday, 1 April 2026.
No airlines currently offer direct flights between Washington Dulles Airport and Belfast. 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 Belfast 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 Belfast is around 40 days in advance, so don’t leave your flight to the last minute.
In February, the average temperature is usually around 5°C. August is typically the warmest month in Belfast, when it usually averages around 17°C. You can expect the least rain in May. The coldest month is January, with temperatures averaging 4°C. The rainiest month is October.
Currently, Icelandair offers the cheapest flight tickets to Belfast.

Flying from Washington Dulles International Airport (IAD) to Belfast: what you need to know

  • Belfast is four hours ahead of Washington DC, where Washington Dulles International Airport is located. Belfast follows the UTC+0 timezone.

  • For a stress-free journey, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This will give you enough time to board your IAD to Belfast flight.

  • Heading off during a peak period like public or school holidays? Expect longer lines at check-in and security. To be on the safe side, arrive up to four hours before international flights and two hours ahead of domestic departures.

  • A stopover is the perfect opportunity to break up your journey and possibly even explore another city. When searching for flight tickets from IAD to Belfast, uncheck the 'Direct flights only' box to see where you can stop along the way. Here are some options to consider:

    • London Heathrow Airport (LHR)

    • Amsterdam Airport Schiphol (AMS)

    • Frankfurt Airport (FRA)

  • IAD is around 40 kilometres from central Washington DC. If you're ride-sharing, catching a cab or driving from the centre, it'll take 50 minutes or so to get there, depending on traffic. If you're planning to take public transport, expect the travel time to be around 1 hour 10 minutes.

  • Want a relaxed start to your trip? Stay near IAD. Whether you're boarding an early flight from Washington Dulles International Airport to Belfast or just don't like being rushed, these hotels are all about convenience:

  • Of all flights departing from Washington Dulles International Airport, 74.39% arrive on time at their destination.

  • The address for IAD is 1 Saarinen Circle.

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

  • Rs64,417 is currently the lowest price for a one-way Washington Dulles International Airport to Belfast flight. A return flight ticket starts at Rs176,087. These fares may change depending on demand.

  • Don't leave things to the last minute. You're more likely to pick up cheap flights from IAD to Belfast if you book in advance. Airlines often have some great early bird rates.

  • The 'Whole month' tool will show you the cheapest tickets from Washington Dulles International Airport to Belfast across the month. It's a great way to snap up a bargain if your plans are flexible.

  • Locking in a cheap flight from IAD to Belfast is easy with Price Alerts. All you need to do is create one of these automatic notifications and we'll notify you when there's a better deal.

  • Snag an affordable flight from Washington Dulles International Airport to Belfast with the help of our filters. Choose your preferred times, airlines and number of stops, then sort the results by 'Cheapest' for the best deals.

Airports in Belfast

Belfast International Airport (BFS)

  • Belfast International Airport (BFS) to the centre of Belfast takes around 30 minutes by car. The centre is roughly 32 kilometres away.

  • Getting there by public transport takes around 2 hours.

  • If you have a late flight from Washington Dulles International Airport to Belfast, few things beat the convenience of staying close to the terminal. Grab your bags from the carousel and then be showered and relaxing not long after at one of these accommodation options near BFS:

  • Begin your adventure by picking up a Belfast International Airport rental car. Grab a set of wheels from Budget, Drivalia or Dollar to explore Belfast and beyond.

  • Lock in the lowest price by booking your vehicle from Belfast International Airport about three weeks before your flight from IAD to Belfast.

George Best Belfast City Airport (BHD)

  • The centre of Belfast is around 8 kilometres from George Best Belfast City Airport (BHD). Once your flight from Washington Dulles International Airport to Belfast has hit the runway and you've made your way through the terminal, expect a drive of about 10 minutes.

  • Public transport will get you there in around 20 minutes.

  • There are some great places to call home for the night near BHD. Kick back and get cosy after your IAD to Belfast flight at any of these perfectly located options:

  • No need to worry about public transport schedules or long cab lines. Pick up a George Best Belfast City Airport rental car and go in any direction that inspires you. Compare offers from Budget, Sixt and Alamo.

  • Don't pay more than you need to. Securing your ride two weeks before your arrival at BHD can get you a lower rate.

Best time to go to Belfast

  • Carefully consider your trip dates before securing your flight from Washington Dulles International Airport to Belfast. The city comes alive during high season, but prices are often higher and major attractions can get busy. Plan your trip to Belfast in the off-season if you like a quieter vibe.

  • Book a Washington Dulles International Airport to Belfast flight ticket with a departure in July to visit the city during its warmest month. Expect temperatures to range from 10ºC to 19ºC.

  • January sees average temperatures of between 1ºC and 8ºC. Look for a cheap ticket from IAD to Belfast around that time if you'd rather travel in cooler conditions.

More about Belfast

  • Once you've booked your flight from Washington Dulles International Airport to Belfast, find a hotel that offers the right mix of comfort and location. Make one of these options your base for exploring Belfast:

  • Crumlin Road Gaol Visitor Attraction and Conference Centre and Titanic Belfast are just two of the popular attractions to put on your Belfast travel itinerary. Keep the sightseeing going at Botanic Gardens.

Explore more of United Kingdom

  • Belfast will leave a lasting impression, but there are so many other parts of United Kingdom you'll want to see. Around 354 kilometres south-east of Belfast, a visit to Birmingham will keep you on the move. Don't miss top attractions like Cadbury World, The Library of Birmingham and National Sea Life Centre.

  • Around 418 kilometres south-east of Belfast, Bristol is another favourite stop in United Kingdom. Experience major highlights starting with Clifton Suspension Bridge, Cabot Tower and Brandon Hill Nature Park.

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