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Cheap flights from Northern Ireland to Washington, D.C. from £493

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 24/7. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — WAS
18 Jun — 25 Jun1
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 13 June 2025.

Round-trip from

£619

One-way from

£493
3/7-9/7
  • 3/7-9/7
  • 6 total stops
  • 66h 38m total
  • Northern Ireland to Washington, D.C.
Search Deals
24/7
  • 24/7
  • 3 total stops
  • 21h 21m 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 13 June 2025.

Thu 3/706:00BFS - DCA
3 stops35h 03mMultiple Airlines
Wed 9/706:00DCA - BFS
3 stops31h 35mMultiple Airlines
Deal found 11/6£619
Thu 3/706:00BFS - IAD
2 stops32h 37mMultiple Airlines
Wed 9/714:25IAD - BFS
2 stops23h 10mMultiple Airlines
Deal found 11/6£622
Sun 27/723:30BFS - BWI
2 stops23h 10mMultiple Airlines
Sun 3/818:50BWI - BFS
2 stops21h 40mMultiple Airlines
Deal found 12/6£714
Mon 3/1114:40BHD - BWI
1 stop33h 05mAmerican Airlines
Tue 30/1220:30BWI - BHD
1 stop12h 05mAmerican Airlines
Deal found 12/6£1,807
Tue 4/1106:30BHD - BWI
2 stops21h 26mDelta
Sun 28/1217:35BWI - BHD
2 stops18h 15mDelta
Deal found 12/6£1,810
Mon 3/1119:30BHD - BWI
1 stop28h 15mBritish Airways
Wed 24/1220:30BWI - BHD
1 stop30h 00mBritish Airways
Deal found 12/6£1,851
Mon 3/1117:20BHD - IAD
1 stop27h 25mDelta
Tue 30/1217:35IAD - BHD
1 stop18h 15mDelta
Deal found 12/6£1,875
Tue 4/1108:40BHD - IAD
2 stops15h 50mAmerican Airlines
Tue 30/1221:55IAD - BHD
1 stop13h 50mAmerican Airlines
Deal found 12/6£1,896
Tue 4/1106:30BHD - DCA
2 stops20h 49mDelta
Sun 28/1217:25DCA - BHD
2 stops18h 25mDelta
Deal found 12/6£1,909
Mon 3/1119:30BHD - IAD
2 stops25h 05mBritish Airways
Sat 27/1218:15IAD - BHD
1 stop11h 55mBritish Airways
Deal found 12/6£1,927
Tue 4/1106:30BHD - IAD
2 stops15h 05mMultiple Airlines
Sat 27/1217:35IAD - BHD
1 stop18h 15mMultiple Airlines
Deal found 12/6£1,932
Tue 4/1106:55BHD - IAD
2 stops13h 40mAer Lingus
Fri 26/1217:05IAD - BHD
2 stops14h 45mAer Lingus
Deal found 12/6£1,935

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 13 June 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.

BFS - DCA

BFSDCA

Belfast Intl

Thu 3/7

06:00-12:03

3 stops35h 03m

Washington, D.C. Reagan-National

Wed 9/7

06:00-18:35

3 stops31h 35m

£619

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 3/7

06:00-09:37

2 stops32h 37m

Washington, D.C. Dulles Intl

Wed 9/7

14:25-18:35

2 stops23h 10m

£622

BelfastBaltimore

BFS - BWI

BFSBWI

Belfast Intl

Sun 27/7

23:30-17:40

2 stops23h 10m

Baltimore/Washington

Sun 3/8

18:50-21:30

2 stops21h 40m

£714

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Mon 3/11

14:40-18:45

1 stop33h 05m

Baltimore/Washington

Tue 30/12

20:30-13:35

1 stop12h 05m

£1,807

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Tue 4/11

06:30-22:56

2 stops21h 26m

Baltimore/Washington

Sun 28/12

17:35-16:50

2 stops18h 15m

£1,810

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Mon 3/11

19:30-18:45

1 stop28h 15m

Baltimore/Washington

Wed 24/12

20:30-07:30

1 stop30h 00m

£1,851

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 3/11

17:20-15:45

1 stop27h 25m

Washington, D.C. Dulles Intl

Tue 30/12

17:35-16:50

1 stop18h 15m

£1,875

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 4/11

08:40-19:30

2 stops15h 50m

Washington, D.C. Dulles Intl

Tue 30/12

21:55-16:45

1 stop13h 50m

£1,896

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Tue 4/11

06:30-22:19

2 stops20h 49m

Washington, D.C. Reagan-National

Sun 28/12

17:25-16:50

2 stops18h 25m

£1,909

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 3/11

19:30-15:35

2 stops25h 05m

Washington, D.C. Dulles Intl

Sat 27/12

18:15-11:10

1 stop11h 55m

£1,927

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 25 results
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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 13 June 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.

Rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. ranges from 66.0 - 102.0 inches per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. when rainfall is around 66.0 mm.

Temperature in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

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 13 June 2025.
Read reviews from past customers who have flown Delta, KLM and Virgin Atlantic from Northern Ireland to Washington, D.C.. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,950 reviews
Check prices

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very Good
7,950 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Virgin Atlantic
7.4
Good
652 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Aer Lingus
7.1
Good
1,118 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 cheapest airlines to fly from Northern Ireland to Washington, D.C. one-way?

    For one-way options, check prices for Aer Lingus. According to our data, you can fly for as low as £720. Users have also found prices from £1,057 and £1,276 on British Airways and Virgin Atlantic, respectively.

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

    Most travelers choose Belfast City - Baltimore/Washington, Belfast City - Washington, D.C. Dulles Intl or Belfast Intl - Baltimore/Washington 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, February is the cheapest month in which you can book a flight from Northern Ireland to Washington, D.C. (average of £565). Flying from Northern Ireland to Washington, D.C. in July is currently the most expensive (average of £946). 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
Arlington
Woodbridge
Hanover
Oxon Hill
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
Gatwick to Dulles Intl flights
Heathrow to Reagan-National flights
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Gatwick to Reagan-National flights
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Manchester to Dulles Intl flights
Edinburgh to Dulles Intl flights
London City to Reagan-National flights
Manchester to Reagan-National flights
Luton to Dulles Intl flights
Birmingham to Dulles Intl flights
Edinburgh to Reagan-National flights
Birmingham to Reagan-National flights
Glasgow Intl to Dulles Intl flights
Glasgow Intl to Reagan-National flights
Leeds to Dulles Intl flights
Newcastle upon Tyne to Dulles Intl flights
Bristol to Dulles Intl flights
Cardiff to Reagan-National flights
Cardiff to Dulles Intl flights
Aberdeen to Dulles Intl flights
Southampton to Dulles Intl flights
Southampton to Reagan-National flights
Leeds to Reagan-National flights
Inverness to Dulles Intl flights
Newcastle upon Tyne to Reagan-National flights
Southend to Dulles Intl flights
Bristol to Reagan-National flights
Belfast City to Dulles Intl flights
Grimsby to Dulles Intl flights
Inverness to Reagan-National flights
Grimsby to Reagan-National flights
Exeter to Dulles Intl flights
Doncaster to Dulles Intl flights
Aberdeen to Reagan-National flights
Belfast Intl to Dulles Intl flights
Norwich to Reagan-National flights
Norwich to Dulles Intl flights
Belfast City to Reagan-National flights

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

Deals for Northern Ireland to Washington, D.C. flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Northern Ireland to Washington, D.C.?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Northern Ireland to Washington, D.C..

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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