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Cheap flights from Northern Ireland to Washington, D.C. from £327

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 31/8. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — WAS
6 Apr — 13 Apr1
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 1 April 2025.

Round-trip from

£600

One-way from

£327
26/5-3/6
  • 26/5-3/6
  • 5 total stops
  • 64h 53m total
  • Northern Ireland to Washington, D.C.
Search Deals
31/8
  • 31/8
  • 2 total stops
  • 23h 45m 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 1 April 2025.

Mon 26/521:55BFS - IAD
3 stops46h 25mMultiple Airlines
Tue 3/617:12IAD - BFS
2 stops18h 28mMultiple Airlines
Deal found 31/3£600
Mon 26/506:10BFS - BWI
2 stops22h 23mMultiple Airlines
Tue 3/620:30BWI - BFS
2 stops13h 30mMultiple Airlines
Deal found 31/3£704
Mon 26/509:50BHD - IAD
1 stop12h 40mBritish Airways
Tue 3/622:40IAD - BHD
1 stop11h 40mBritish Airways
Deal found 31/3£735
Mon 26/517:25BHD - IAD
1 stop27h 10mVirgin Atlantic
Tue 3/617:24IAD - BHD
2 stops22h 41mVirgin Atlantic
Deal found 31/3£757
Mon 26/506:30BHD - DCA
2 stops20h 31mVirgin Atlantic
Tue 3/618:55DCA - BHD
2 stops41h 00mVirgin Atlantic
Deal found 31/3£762
Mon 26/508:20BFS - DCA
2 stops16h 23mMultiple Airlines
Tue 3/606:59DCA - BFS
2 stops28h 41mMultiple Airlines
Deal found 31/3£891

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 1 April 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 - IAD

BFSIAD

Belfast Intl

Mon 26/5

21:55-15:20

3 stops46h 25m

Washington, D.C. Dulles Intl

Tue 3/6

17:12-16:40

2 stops18h 28m

£600

BelfastBaltimore

BFS - BWI

BFSBWI

Belfast Intl

Mon 26/5

06:10-23:33

2 stops22h 23m

Baltimore/Washington

Tue 3/6

20:30-15:00

2 stops13h 30m

£704

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 26/5

09:50-17:30

1 stop12h 40m

Washington, D.C. Dulles Intl

Tue 3/6

22:40-15:20

1 stop11h 40m

£735

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 26/5

17:25-15:35

1 stop27h 10m

Washington, D.C. Dulles Intl

Tue 3/6

17:24-21:05

2 stops22h 41m

£757

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Mon 26/5

06:30-22:01

2 stops20h 31m

Washington, D.C. Reagan-National

Tue 3/6

18:55-16:55

2 stops41h 00m

£762

BelfastWashington, D.C.

BFS - DCA

BFSDCA

Belfast Intl

Mon 26/5

08:20-19:43

2 stops16h 23m

Washington, D.C. Reagan-National

Tue 3/6

06:59-16:40

2 stops28h 41m

£891

BelfastBaltimore

BFS - BWI

BFSBWI

Belfast Intl

Sun 31/8

22:55-17:40

2 stops23h 45m

£327

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Mon 1/9

06:40-19:59

3 stops18h 19m

£449

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 1/9

09:05-18:55

2 stops14h 50m

£491

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Sun 31/8

20:05-16:24

2 stops25h 19m

£758

Flights are sorted by cheapest return flights first.

Deals found on 30/3

Showing 1-10 of 11 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 1 April 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 1 April 2025.
Virgin Atlantic
7.4
Good
636 reviews
Check prices

Food

6.9

Entertainment

7.5

Boarding

7.6

Comfort

7.2

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

K,Aug 2024

LHR - MIA

The crew leader who did the tannoys was amazing. He really made us laugh 😂. Also, a great landing in very windy conditions.
Virgin Atlantic
7.4
Good
636 reviews
Virgin Atlantic
7.4
Good
636 reviews
Check prices

Food

6.9

Entertainment

7.5

Boarding

7.6

Comfort

7.2

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

K,Aug 2024

LHR - MIA

The crew leader who did the tannoys was amazing. He really made us laugh 😂. Also, a great landing in very windy conditions.
American Airlines
7.2
Good
10,000 reviews
Virgin Atlantic
7.4
Good
636 reviews
Check prices

Food

6.9

Entertainment

7.5

Boarding

7.6

Comfort

7.2

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

K,Aug 2024

LHR - MIA

The crew leader who did the tannoys was amazing. He really made us laugh 😂. Also, a great landing in very windy conditions.
British Airways
6.6
Okay
6,715 reviews
Virgin Atlantic
7.4
Good
636 reviews
Check prices

Food

6.9

Entertainment

7.5

Boarding

7.6

Comfort

7.2

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

K,Aug 2024

LHR - MIA

The crew leader who did the tannoys was amazing. He really made us laugh 😂. Also, a great landing in very windy conditions.

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 City - Baltimore/Washington, Belfast Intl - Baltimore/Washington or Belfast Intl - 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, 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
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
London City to Reagan-National flights
Manchester to Dulles Intl flights
Luton to Dulles Intl flights
Manchester to Reagan-National flights
Edinburgh to Dulles Intl flights
Birmingham to Dulles Intl flights
Birmingham to Reagan-National flights
Newcastle upon Tyne to Dulles Intl flights
Edinburgh to Reagan-National flights
Glasgow Intl to Dulles Intl flights
Newcastle upon Tyne to Reagan-National flights
Bristol to Dulles Intl flights
Glasgow Intl to Reagan-National flights
Leeds to Dulles Intl flights
Cardiff to Dulles Intl flights
Bristol to Reagan-National flights
Cardiff to Reagan-National flights
Aberdeen to Dulles Intl flights
Southampton to Reagan-National flights
Southampton to Dulles Intl flights
Aberdeen to Reagan-National flights
Belfast Intl to Dulles Intl flights
Grimsby to Dulles Intl flights
Leeds to Reagan-National flights
Grimsby to Reagan-National flights
Norwich to Dulles Intl flights
Southend to Dulles Intl flights
Belfast City to Dulles Intl flights
Inverness to Dulles Intl flights
Exeter to Dulles Intl flights
Doncaster to Dulles Intl flights
Norwich to Reagan-National flights
Inverness to Reagan-National flights
Belfast City to Reagan-National flights

Top airline flying from Northern Ireland to Washington, D.C.

Discover the top airline that operate flights from Northern Ireland to Washington, D.C.. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 1 April 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£706Average£737FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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