Find cheap flights from Washington Dulles Airport to Northern Ireland from £321
This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Northern Ireland departing on 28/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
Return
1 adult
Economy
0 bags
Fri 7/6
Fri 14/6
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In the last 7 days, travellers have searched 43,968,530 times on KAYAK, and here's why:
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Best time to beat the crowds (26% less expensive on average)
Most popular time to fly (6% more expensive on average)
FAQs - booking Northern Ireland flights
How does KAYAK find such low prices on flights from Washington Dulles Airport to Northern Ireland?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Northern Ireland.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Northern Ireland?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Northern Ireland from Washington Dulles Airport is likely to change within 7 days, so travellers know whether to wait or book now.
What is the Hacker Fare option on flights from Washington Dulles Airport to Northern Ireland?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Northern Ireland with an airline and back to Washington Dulles Airport with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Northern Ireland?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Northern Ireland from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.
See more FAQs
Top tips for finding a cheap flight from Washington Dulles Airport to Northern Ireland
Morning departure is around 10% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days
Book cheap flights from Washington, D.C. to Northern Ireland
Cheapest flights to Northern Ireland from Washington, D.C. found in 2024
Recent return flight deals
13/10Sun
1 stopBritish Airways
14h 05mIAD-BHD
19/10Sat
1 stopBritish Airways
29h 45mBHD-IAD
£475
16/9Mon
1 stopBritish Airways
11h 50mIAD-BHD
28/9Sat
1 stopBritish Airways
18h 40mBHD-IAD
£483
16/9Mon
2 stopsAmerican Airlines
14h 20mIAD-BHD
26/9Thu
1 stopAmerican Airlines
18h 55mBHD-IAD
£486
11/8Sun
1 stopAmerican Airlines
10h 45mIAD-BHD
18/8Sun
1 stopAmerican Airlines
31h 55mBHD-IAD
£511
13/10Sun
2 stopsDelta
16h 00mIAD-BHD
19/10Sat
1 stopDelta
27h 15mBHD-IAD
£537
13/10Sun
2 stopsDelta
16h 00mIAD-BHD
19/10Sat
1 stopDelta
27h 15mBHD-IAD
£553
11/8Sun
2 stopsKLM
16h 00mIAD-BHD
18/8Sun
2 stopsKLM
30h 33mBHD-IAD
£569
17/9Tue
1 stopKLM
18h 00mIAD-BHD
26/9Thu
2 stopsKLM
27h 37mBHD-IAD
£612
17/9Tue
2 stops
15h 55mIAD-BHD
26/9Thu
2 stops
18h 56mBHD-IAD
£676
17/9Tue
2 stops
15h 55mIAD-BHD
27/9Fri
2 stops
24h 13mBHD-IAD
£680
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Recent one-way flight deals
28/9Sat
1 stopLufthansa
13h 05mIAD-BHD
£321
28/9Sat
2 stopsDelta
21h 35mIAD-BHD
£333
2/7Tue
2 stops
37h 20mIAD-BHD
£439
2/7Tue
1 stopDelta
18h 00mIAD-BHD
£596
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Washington Dulles Airport - Northern Ireland Flights