£667+ Flights from Northern Ireland to Washington, D.C. - Compare & Save Big | Cheapflights

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

Round-trip from	£1,038
One-way from	£667

Delta

Delta
22/6-26/6
4 total stops
50h 08m total
Northern Ireland to Washington, D.C.

Aer Lingus

Aer Lingus
30/6
2 total stops
26h 55m total
Northern Ireland to Washington, D.C.

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 30 April 2025.

Sun 22/611:25BHD - DCA

2 stops34h 08mDelta

Thu 26/619:55DCA - BHD

2 stops16h 00mDelta

Deal found 29/4£1,038

Sun 22/611:25BHD - IAD

1 stop33h 10mMultiple Airlines

Thu 26/617:25IAD - BHD

1 stop18h 30mMultiple Airlines

Deal found 29/4£1,047

Sun 22/611:00BHD - IAD

2 stops37h 44mAmerican Airlines

Thu 26/619:25IAD - BHD

1 stop10h 45mAmerican Airlines

Deal found 29/4£1,081

Best flights from Northern Ireland to Washington, D.C.
Discover carefully curated flight deals from Northern Ireland to Washington, D.C. that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 April 2025.

Sun 22/611:25BHD - DCA

2 stops34h 08mDelta

Thu 26/619:55DCA - BHD

2 stops16h 00mDelta

Deal found 29/4£1,038

Sun 22/611:25BHD - IAD

1 stop33h 10mMultiple Airlines

Thu 26/617:25IAD - BHD

1 stop18h 30mMultiple Airlines

Deal found 29/4£1,047

Sun 22/611:00BHD - IAD

2 stops37h 44mAmerican Airlines

Thu 26/619:25IAD - BHD

1 stop10h 45mAmerican Airlines

Deal found 29/4£1,081

One-way flights from Northern Ireland to Washington, D.C.
Search for one-way flight options from Northern Ireland to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated 30 April 2025.

Mon 30/617:55BHD - IAD

2 stops26h 55mAer Lingus

Deal found 29/4£667

Mon 30/609:50BHD - DCA

2 stops18h 17mIberia

Deal found 29/4£1,265

Mon 30/619:30BHD - BWI

1 stop29h 05mFinnair

Deal found 29/4£1,267

Mon 30/619:30BHD - IAD

1 stop25h 25mFinnair

Deal found 29/4£1,268

Mon 30/606:40BHD - BWI

2 stops16h 42mBritish Airways

Deal found 29/4£1,304

Cheapflights Fare Finder

Use the filters below to find and compare flights from Northern Ireland to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Sun 22/6

11:25-16:33

2 stops34h 08m

Washington, D.C. Reagan-National

Thu 26/6

19:55-16:55

2 stops16h 00m

£1,038

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Sun 22/6

11:25-15:35

1 stop33h 10m

Washington, D.C. Dulles Intl

Thu 26/6

17:25-16:55

1 stop18h 30m

£1,047

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Sun 22/6

11:00-19:44

2 stops37h 44m

Washington, D.C. Dulles Intl

Thu 26/6

19:25-11:10

1 stop10h 45m

£1,081

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 30/6

17:55-15:50

2 stops26h 55m

£667

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Mon 30/6

09:50-23:07

2 stops18h 17m

£1,265

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Mon 30/6

19:30-19:35

1 stop29h 05m

£1,267

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 30/6

19:30-15:55

1 stop25h 25m

£1,268

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Mon 30/6

06:40-18:22

2 stops16h 42m

£1,304

Flights are sorted by cheapest return flights first.

Deals found on 29/4

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?

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

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

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.

8.0

Very Good

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

8.0

Very Good

8.0

Very Good

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

7.6

Good

8.0

Very Good

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

American Airlines

7.2

Good

8.0

Very Good

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

7.0

Good

8.0

Very Good

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

7.0

Good

8.0

Very Good

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

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 £667. Users have also found prices from £1,265 and £1,267 on Iberia and Finnair, respectively.
What are the most popular routes from Northern Ireland to Washington, D.C.?
Most travelers choose Belfast Intl - Baltimore/Washington, Belfast City - Washington, D.C. Reagan-National or Belfast Intl - Washington, D.C. Dulles Intl 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

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

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

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Luton to Dulles Intl flights

Manchester to Dulles Intl flights

London City to Reagan-National flights

Manchester to Reagan-National flights

Edinburgh to Reagan-National flights

Birmingham to Dulles Intl flights

Birmingham to Reagan-National flights

Glasgow Intl to Dulles Intl flights

Newcastle upon Tyne to Dulles Intl flights

Leeds to Dulles Intl flights

Newcastle upon Tyne to Reagan-National flights

Glasgow Intl to Reagan-National flights

Bristol to Dulles Intl flights

Cardiff to Dulles Intl flights

Cardiff to Reagan-National flights

Leeds to Reagan-National flights

Southampton to Dulles Intl flights

Norwich to Dulles Intl flights

Bristol to Reagan-National flights

Inverness to Reagan-National flights

Aberdeen to Dulles Intl flights

Aberdeen to Reagan-National flights

Southampton to Reagan-National flights

Inverness to Dulles Intl flights

Belfast City to Dulles Intl flights

Belfast Intl to Dulles Intl flights

Norwich to Reagan-National flights

Grimsby to Dulles Intl flights

Exeter to Dulles Intl flights

Doncaster to Dulles Intl flights

Grimsby to Reagan-National flights

Southend to Dulles Intl flights

Complete your trip

Washington, D.C. car hire

Washington, D.C. Dulles Intl Airport car hire

Baltimore/Washington Airport car hire

Washington, D.C. Reagan-National Airport car hire

Dupont Circle car hire

Georgetown car hire

Downtown car hire

Capitol Hill car hire

Foggy Bottom - West End car hire

Southwest Waterfront car hire

Columbia Heights car hire

Anacostia car hire

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Baltimore to London Heathrow Airport flights

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

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£679	Average£688	FlexibilityNo cancel fee	On-time70%	Search British Airways flights

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