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Cheap flights from Northern Ireland to Washington, D.C. from £444

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/8. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — WAS
15 Jul — 22 Jul1
1 adult

Cheap flight deals from Northern Ireland to Washington, D.C.

Keep the following information in mind while searching for Northern Ireland to Washington, D.C. flight deals. Data was last updated 10 July 2025.

Round-trip from

£556

One-way from

£444
American Airlines
  • American Airlines
  • 20/11-24/11
  • 3 total stops
  • 52h 18m total
  • Northern Ireland to Washington, D.C.
Search Deals
7/8
  • 7/8
  • 2 total stops
  • 21h 10m total
  • Northern Ireland to Washington, D.C.
Search Deals

Find flight deals from Northern Ireland to Washington, D.C.

Cheapest flights from Northern Ireland to Washington, D.C.
Explore the most affordable flight options available from Northern Ireland to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 July 2025.

Thu 20/1115:05BHD - IAD
1 stop33h 40mAmerican Airlines
Mon 24/1110:52IAD - BHD
2 stops18h 38mAmerican Airlines
Deal found 9/7£556
Thu 20/1109:00BHD - DCA
2 stops18h 15mAmerican Airlines
Mon 24/1114:54DCA - BHD
2 stops14h 36mAmerican Airlines
Deal found 9/7£559
Thu 7/806:10BFS - IAD
2 stops21h 00mMultiple Airlines
Mon 11/820:30IAD - BFS
2 stops20h 55mMultiple Airlines
Deal found 9/7£565
Thu 7/807:05BHD - IAD
2 stops20h 05mMultiple Airlines
Mon 11/820:30IAD - BHD
2 stops18h 55mMultiple Airlines
Deal found 9/7£596
Thu 7/806:30BHD - DCA
2 stops15h 03mDelta
Mon 11/817:00DCA - BHD
2 stops18h 55mDelta
Deal found 9/7£650
Thu 7/806:30BHD - IAD
2 stops18h 21mDelta
Mon 11/817:25IAD - BHD
1 stop18h 30mDelta
Deal found 9/7£650
Fri 22/821:05BFS - BWI
2 stops31h 54mMultiple Airlines
Fri 29/820:30BWI - BFS
2 stops19h 40mMultiple Airlines
Deal found 8/7£659
Thu 7/817:25BHD - IAD
1 stop27h 10mKLM
Mon 11/817:25IAD - BHD
1 stop22h 50mKLM
Deal found 9/7£678
Thu 7/809:35BHD - BWI
1 stop15h 00mAmerican Airlines
Mon 11/817:38BWI - BHD
2 stops14h 17mAmerican Airlines
Deal found 9/7£695
Thu 7/807:05BHD - BWI
2 stops17h 20mMultiple Airlines
Mon 11/820:30BWI - BHD
2 stops18h 55mMultiple Airlines
Deal found 9/7£757
Thu 7/806:30BHD - DCA
3 stops20h 57mMultiple Airlines
Mon 11/816:30DCA - BHD
2 stops19h 25mMultiple Airlines
Deal found 9/7£1,097
Thu 7/807:30BFS - DCA
2 stops15h 32mMultiple Airlines
Mon 11/816:30DCA - BFS
2 stops20h 20mMultiple Airlines
Deal found 9/7£1,156

Cheapflights Fare Finder

Customise your flight search to find flights from Northern Ireland to Washington, D.C. that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 10 July 2025.
Use the filters below to find and compare flights from Northern Ireland to Washington, D.C. that are best for you.

Fly from

Northern Ireland

Fly to

Washington, D.C.

Route

Depart

Return

Price

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 20/11

15:05-19:45

1 stop33h 40m

Washington, D.C. Dulles Intl

Mon 24/11

10:52-10:30

2 stops18h 38m

£556

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Thu 20/11

09:00-22:15

2 stops18h 15m

Washington, D.C. Reagan-National

Mon 24/11

14:54-10:30

2 stops14h 36m

£559

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 7/8

06:10-22:10

2 stops21h 00m

Washington, D.C. Dulles Intl

Mon 11/8

20:30-22:25

2 stops20h 55m

£565

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 7/8

07:05-22:10

2 stops20h 05m

Washington, D.C. Dulles Intl

Mon 11/8

20:30-20:25

2 stops18h 55m

£596

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Thu 7/8

06:30-16:33

2 stops15h 03m

Washington, D.C. Reagan-National

Mon 11/8

17:00-16:55

2 stops18h 55m

£650

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 7/8

06:30-19:51

2 stops18h 21m

Washington, D.C. Dulles Intl

Mon 11/8

17:25-16:55

1 stop18h 30m

£650

BelfastBaltimore

BFS - BWI

BFSBWI

Belfast Intl

Fri 22/8

21:05-23:59

2 stops31h 54m

Baltimore/Washington

Fri 29/8

20:30-21:10

2 stops19h 40m

£659

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 7/8

17:25-15:35

1 stop27h 10m

Washington, D.C. Dulles Intl

Mon 11/8

17:25-21:15

1 stop22h 50m

£678

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Thu 7/8

09:35-19:35

1 stop15h 00m

Baltimore/Washington

Mon 11/8

17:38-12:55

2 stops14h 17m

£695

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Thu 7/8

07:05-19:25

2 stops17h 20m

Baltimore/Washington

Mon 11/8

20:30-20:25

2 stops18h 55m

£757

Flights are sorted by cheapest return flights first.

Deals found on 9/7

Showing 1-10 of 18 results
1
2

Best time to book a flight from Northern Ireland to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Northern Ireland with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Northern Ireland to Washington, D.C.

What is the cheapest time of day to fly from NIR to WAS?

Find hourly flight availability from Northern Ireland to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 10 July 2025.

When flying from Northern Ireland to Washington, D.C., the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington, D.C.. Reviews last updated 10 July 2025.
See what other customers who have flown with Delta, KLM, andAmerican Airlines from Northern Ireland to Washington, D.C. have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,954 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

Comfort

7.9

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very Good
7,954 reviews
Delta
8.0
Very Good
7,954 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

Comfort

7.9

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
KLM
7.8
Good
1,370 reviews
Delta
8.0
Very Good
7,954 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

Comfort

7.9

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very Good
7,954 reviews
Check prices

Overall

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

Comfort

7.9

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

Related info for your journey

Find useful and relevant information for your journey from Northern Ireland to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the most popular routes from Northern Ireland to Washington, D.C.?

    Most travelers choose Belfast Intl - Washington, D.C. Reagan-National, Belfast Intl - Washington, D.C. Dulles Intl or Belfast City - Washington, D.C. Reagan-National when deciding on the best route from Northern Ireland to Washington, D.C..

  • Can I find deals for flights from Northern Ireland to Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on Northern Ireland to Washington, D.C. flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Northern Ireland to Washington, D.C.?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Northern Ireland to Washington, D.C..

  • Can I find deals for business class flights from Northern Ireland to Washington, D.C.?

    Yes. Cheapflights offers flight deals from Northern Ireland to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Northern Ireland to Washington, D.C.?

    Currently, January is the cheapest month in which you can book a flight from Northern Ireland to Washington, D.C. (average of £599). Flying from Northern Ireland to Washington, D.C. in July is currently the most expensive (average of £947). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Northern Ireland?

Book flights to Northern Ireland if you plan to visit one of these locations
Silver Spring
Hanover
Oxon Hill
Arlington
Woodbridge
College Park
Laurel
Tysons

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Alternative routes for Northern Ireland to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Dulles Intl flights
Heathrow to Reagan-National flights
Gatwick to Dulles Intl flights
London City to Dulles Intl flights
Gatwick to Reagan-National flights
Stansted to Dulles Intl flights
Luton to Dulles Intl flights
London City to Reagan-National flights
Manchester to Dulles Intl flights
Edinburgh to Dulles Intl flights
Manchester to Reagan-National flights
Birmingham to Dulles Intl flights
Edinburgh to Reagan-National flights
Birmingham to Reagan-National flights
Glasgow Intl to Dulles Intl flights
Newcastle upon Tyne to Dulles Intl flights
Leeds to Dulles Intl flights
Glasgow Intl to Reagan-National flights
Newcastle upon Tyne to Reagan-National flights
Belfast City to Dulles Intl flights
Belfast Intl to Dulles Intl flights
Belfast City to Reagan-National flights
Aberdeen to Dulles Intl flights
Norwich to Dulles Intl flights
Bristol to Dulles Intl flights
Norwich to Reagan-National flights
Southampton to Dulles Intl flights
Grimsby to Dulles Intl flights
Inverness to Reagan-National flights
Aberdeen to Reagan-National flights
Cardiff to Dulles Intl flights
Bristol to Reagan-National flights
Cardiff to Reagan-National flights
Grimsby to Reagan-National flights
Leeds to Reagan-National flights
Inverness to Dulles Intl flights
Southampton to Reagan-National flights
Southend to Dulles Intl flights
Exeter to Dulles Intl flights
Doncaster to Dulles Intl flights

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How does Cheapflights help users find flights from Northern Ireland to Washington, D.C.?

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Can Cheapflights find flights from Northern Ireland to Washington, D.C. with no change fees?

Need flexible booking options for your flight to Washington, D.C. from Northern Ireland? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Northern Ireland to Washington, D.C. become cheaper?

Not ready to book yet? You can track prices for flights from Northern Ireland to Washington, D.C. on Cheapflights with our Price Alert feature and get notified when better prices are available.

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