How does KAYAK find such low prices on flights from Northern Ireland to Washington, D.C.?

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 Northern Ireland to Washington, D.C..

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Northern Ireland to Washington, D.C.?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. from Northern Ireland is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Northern Ireland to Washington, D.C.?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington, D.C. with an airline and back to Northern Ireland with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Northern Ireland to Washington, D.C.?

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 Washington, D.C. from Northern Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$438 CHEAP FLIGHTS from Northern Ireland to Washington, D.C.

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals

Cheap Flights from Northern Ireland to Washington, D.C.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Recent round-trip flight deals from Northern Ireland to Washington, D.C.

Thu, Oct 29 - Thu, Nov 5

6:30 am - 7:30 pmBFS Belfast Intl-IAD Washington, D.C. Dulles Intl

17h 00m2 stops London Gatwick Reykjavik Keflavik Intl

7:40 pm - 5:05 pmIAD Washington, D.C. Dulles Intl-BFS Belfast Intl

16h 25m2 stops Reykjavik Keflavik Intl London Gatwick

$646Multiple Airlines

Thu, Jan 21 - Mon, Jan 25

5:50 pm - 4:20 pmBHD Belfast City-IAD Washington, D.C. Dulles Intl

27h 30m2 stops London Heathrow Madrid Barajas

4:13 pm - 4:05 pmIAD Washington, D.C. Dulles Intl-BHD Belfast City

18h 52m2 stops Charlotte Douglas London Heathrow

$801British Airways

Thu, Jan 21 - Mon, Jan 25

5:50 pm - 4:20 pmBHD Belfast City-IAD Washington, D.C. Dulles Intl

27h 30m2 stops London Heathrow Madrid Barajas

4:13 pm - 4:05 pmIAD Washington, D.C. Dulles Intl-BHD Belfast City

18h 52m2 stops Charlotte Douglas London Heathrow

$802British Airways

Thu, Jan 21 - Mon, Jan 25

5:50 pm - 4:20 pmBHD Belfast City-IAD Washington, D.C. Dulles Intl

27h 30m2 stops London Heathrow Madrid Barajas

9:45 pm - 5:25 pmIAD Washington, D.C. Dulles Intl-BHD Belfast City

14h 40m1 stop London Heathrow

$803British Airways

Thu, Jan 21 - Mon, Jan 25

5:50 pm - 4:20 pmBHD Belfast City-IAD Washington, D.C. Dulles Intl

27h 30m2 stops London Heathrow Madrid Barajas

9:45 pm - 5:25 pmIAD Washington, D.C. Dulles Intl-BHD Belfast City

14h 40m1 stop London Heathrow

$804British Airways

Wed, Sep 30 - Sun, Oct 4

7:40 pm - 5:25 pmBHD Belfast City-IAD Washington, D.C. Dulles Intl

26h 45m1 stop London Heathrow

5:45 pm - 10:30 amIAD Washington, D.C. Dulles Intl-BHD Belfast City

11h 45m1 stop London Heathrow

$809British Airways

Thu, Jan 21 - Mon, Jan 25

5:50 pm - 5:05 pmBHD Belfast City-BWI Baltimore/Washington

28h 15m1 stop London Heathrow

6:55 pm - 10:50 amBWI Baltimore/Washington-BHD Belfast City

10h 55m1 stop London Heathrow

$816British Airways

Thu, Jan 21 - Mon, Jan 25

11:05 am - 7:55 pmBHD Belfast City-IAD Washington, D.C. Dulles Intl

13h 50m1 stop London Heathrow

9:45 pm - 5:25 pmIAD Washington, D.C. Dulles Intl-BHD Belfast City

14h 40m1 stop London Heathrow

$816British Airways

Thu, Jan 21 - Mon, Jan 25

5:50 pm - 5:05 pmBHD Belfast City-BWI Baltimore/Washington

28h 15m1 stop London Heathrow

6:55 pm - 10:50 amBWI Baltimore/Washington-BHD Belfast City

10h 55m1 stop London Heathrow

$817British Airways

Thu, Jan 21 - Mon, Jan 25

11:05 am - 7:55 pmBHD Belfast City-IAD Washington, D.C. Dulles Intl

13h 50m1 stop London Heathrow

9:45 pm - 5:25 pmIAD Washington, D.C. Dulles Intl-BHD Belfast City

14h 40m1 stop London Heathrow

$817British Airways

Useful Info

How does KAYAK find such low prices on flights from Northern Ireland to Washington, D.C.?
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 Northern Ireland to Washington, D.C..
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Northern Ireland to Washington, D.C.?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. from Northern Ireland is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Northern Ireland to Washington, D.C.?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington, D.C. with an airline and back to Northern Ireland with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Northern Ireland to Washington, D.C.?
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 Washington, D.C. from Northern Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Linthicum Heights

Hanover

Springfield

Gaithersburg

Towson

Oxon Hill

Owings Mills

Greenbelt

Glen Burnie

Edgewood

Chesapeake Beach

Camp Springs

Ellicott City

Pikesville

Hunt Valley

Colonial Beach

Capitol Heights

Lutherville Timonium

Westminster

Clinton

More options for your flight to Washington, D.C.

Add a hotel or car rental

Cabin class

Direct Flights

Origins

Other destinations

Return flight

Complete your trip to Washington, D.C. with a hotel stay or car rental

Car rentals in Washington, D.C.

Hotels in Washington, D.C.

Vacations in Washington, D.C.

$438 Find Cheap Flights from Northern Ireland to Washington, D.C. - Compare and Save

Cheap Flights from Northern Ireland to Washington, D.C.

Recent round-trip flight deals from Northern Ireland to Washington, D.C.

Recent one-way flight deals from Northern Ireland to Washington, D.C.

FAQs for booking flights from Northern Ireland to Washington, D.C.

Traveling to a place near Washington, D.C.?

More options for your flight to Washington, D.C.

Complete your trip to Washington, D.C. with a hotel stay or car rental

Cabin class types available on flights to Northern Ireland

Find direct flights for Washington, D.C.

Flights from domestic origins to Washington, D.C.

Flights to other popular destinations

Find deals for your return flight