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

To fly one-way, consider booking your trip with British Airways, which is currently one of the cheapest options available, starting at £371. American Airlines flights start at £511 while deals on Aer Lingus start at £518 one-way.

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

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Northern Ireland (average of £67). Flying from Washington, D.C. to Northern Ireland in July is currently the most expensive (average of £90). 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.

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

While some choose either Washington, D.C. Reagan-National - Belfast Intl or Washington, D.C. Dulles Intl - Belfast City, Washington, D.C. Dulles Intl - Belfast Intl is the most popular route from Washington, D.C. to Northern Ireland.

What is the cheapest month to fly from Washington, D.C. to Northern Ireland?

Flights from Washington, D.C. to Northern Ireland lean towards being more expensive in June. Prices are generally better when you fly from Washington, D.C. to Northern Ireland in January, with the cheapest ticket starting at £472.

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. to Northern Ireland as you normally would.

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

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

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

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

£310+ Flights from Washington, D.C. to Northern Ireland

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

Round-trip from	£403
One-way from	£310
Popular in	June
Cheapest in	January
Average price	£755

6/5-14/5
4 total stops
40h 00m total
Washington, D.C. to Northern Ireland

Search Deals

22/8
2 total stops
32h 40m total
Washington, D.C. to Northern Ireland

Search Deals

Highest demand for flights based on searches. 19% potential increase in price (£106 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£20 potential savings vs. average return price).

Search Deals

Average for round-trip flights in March 2025

Search Deals

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

Cheapest flights from Washington, D.C. to Northern Ireland
Explore the most affordable flight options available from Washington, D.C. to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 March 2025.

Tue 6/518:50BWI - BFS

2 stops23h 20mMultiple Airlines

Wed 14/506:00BFS - BWI

2 stops16h 40mMultiple Airlines

Deal found 31/3£403

Mon 28/421:20BWI - BHD

1 stop13h 20mBritish Airways

Mon 5/519:30BHD - BWI

1 stop29h 05mBritish Airways

Deal found 31/3£491

Tue 6/517:40IAD - BHD

1 stop10h 20mAmerican Airlines

Wed 14/513:50BHD - IAD

1 stop11h 15mAmerican Airlines

Deal found 31/3£510

Tue 6/518:20BWI - BHD

2 stops16h 00mAmerican Airlines

Wed 14/511:30BHD - BWI

1 stop13h 05mAmerican Airlines

Deal found 31/3£514

Fri 4/406:35DCA - BHD

2 stops21h 15mBritish Airways

Sun 6/420:05BHD - DCA

2 stops28h 54mBritish Airways

Deal found 30/3£522

Fri 4/417:25IAD - BHD

1 stop18h 30mKLM

Sun 6/417:25BHD - IAD

1 stop27h 10mKLM

Deal found 30/3£537

Mon 12/520:30IAD - BFS

2 stops21h 10mMultiple Airlines

Mon 19/512:35BFS - IAD

3 stops37h 15mMultiple Airlines

Deal found 30/3£572

Wed 30/719:25IAD - BHD

1 stop11h 30mBritish Airways

Sat 16/809:35BHD - IAD

1 stop15h 40mBritish Airways

Deal found 30/3£588

Tue 6/517:32IAD - BHD

2 stops22h 33mDelta

Wed 14/506:30BHD - IAD

2 stops20h 04mDelta

Deal found 31/3£591

Mon 28/420:30BWI - BHD

2 stops15h 50mMultiple Airlines

Mon 5/507:05BHD - BWI

3 stops38h 41mMultiple Airlines

Deal found 31/3£599

Fri 6/619:00DCA - BHD

2 stops15h 30mAmerican Airlines

Fri 20/606:35BHD - DCA

2 stops15h 24mAmerican Airlines

Deal found 31/3£671

Thu 22/506:59DCA - BFS

3 stops28h 16mMultiple Airlines

Fri 30/518:40BFS - DCA

3 stops32h 48mMultiple Airlines

Deal found 31/3£718

Best flights from Washington, D.C. to Northern Ireland
Discover carefully curated flight deals from Washington, D.C. to Northern Ireland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 March 2025.

Tue 6/518:50BWI - BFS

2 stops23h 20mMultiple Airlines

Wed 14/506:00BFS - BWI

2 stops16h 40mMultiple Airlines

Deal found 31/3£403

Mon 28/421:20BWI - BHD

1 stop13h 20mBritish Airways

Mon 5/519:30BHD - BWI

1 stop29h 05mBritish Airways

Deal found 31/3£491

Tue 6/517:40IAD - BHD

1 stop10h 20mAmerican Airlines

Wed 14/513:50BHD - IAD

1 stop11h 15mAmerican Airlines

Deal found 31/3£510

Tue 6/517:32IAD - BHD

2 stops22h 33mDelta

Wed 14/506:30BHD - IAD

2 stops20h 04mDelta

Deal found 31/3£591

Sun 13/417:25IAD - BHD

1 stop18h 30mKLM

Sat 19/417:25BHD - IAD

1 stop27h 10mKLM

Deal found 30/3£919

Tue 6/518:20BWI - BHD

2 stops16h 00mAmerican Airlines

Wed 14/511:30BHD - BWI

1 stop13h 05mAmerican Airlines

Deal found 31/3£514

Tue 6/514:54DCA - BHD

2 stops14h 41mBritish Airways

Wed 14/510:00BHD - DCA

2 stops17h 15mBritish Airways

Deal found 31/3£522

Mon 12/520:30IAD - BFS

2 stops21h 10mMultiple Airlines

Mon 19/512:35BFS - IAD

3 stops37h 15mMultiple Airlines

Deal found 30/3£572

Tue 6/513:59IAD - BHD

2 stops15h 36mBritish Airways

Wed 14/510:00BHD - IAD

1 stop10h 45mBritish Airways

Deal found 31/3£537

Mon 28/420:30BWI - BHD

2 stops15h 50mMultiple Airlines

Mon 5/507:05BHD - BWI

3 stops38h 41mMultiple Airlines

Deal found 31/3£599

Fri 6/619:00DCA - BHD

2 stops15h 30mAmerican Airlines

Fri 20/606:35BHD - DCA

2 stops15h 24mAmerican Airlines

Deal found 31/3£671

Thu 22/506:59DCA - BFS

3 stops28h 16mMultiple Airlines

Fri 30/518:40BFS - DCA

3 stops32h 48mMultiple Airlines

Deal found 31/3£718

Last-minute flights from Washington, D.C. to Northern Ireland
Discover last-minute flight deals from Washington, D.C. to Northern Ireland. Data last updated 31 March 2025 and is based on user searches.

Fri 4/406:35DCA - BHD

2 stops21h 15mBritish Airways

Sun 6/420:05BHD - DCA

2 stops28h 54mBritish Airways

Deal found 30/3£522

Fri 4/417:25IAD - BHD

1 stop18h 30mKLM

Sun 6/417:25BHD - IAD

1 stop27h 10mKLM

Deal found 30/3£537

Fri 4/417:40IAD - BHD

2 stops15h 55mBritish Airways

Sun 6/416:20BHD - IAD

2 stops32h 50mBritish Airways

Deal found 30/3£723

Fri 4/420:30IAD - BFS

2 stops18h 35mMultiple Airlines

Sun 6/406:00BFS - IAD

3 stops42h 05mMultiple Airlines

Deal found 30/3£899

Fri 11/417:25IAD - BHD

1 stop18h 30mMultiple Airlines

Sat 19/406:30BHD - IAD

1 stop14h 05mMultiple Airlines

Deal found 30/3£1,093

Sun 13/415:59DCA - BHD

2 stops14h 31mAmerican Airlines

Sat 19/407:05BHD - DCA

2 stops15h 54mAmerican Airlines

Deal found 30/3£790

Sun 13/419:46IAD - BHD

2 stops16h 09mDelta

Sat 19/406:30BHD - IAD

2 stops21h 37mDelta

Deal found 31/3£1,028

Sun 13/417:40BWI - BHD

2 stops22h 35mDelta

Sat 19/406:30BHD - BWI

2 stops21h 04mDelta

Deal found 30/3£1,028

Mon 28/421:20BWI - BHD

1 stop13h 20mBritish Airways

Mon 5/519:30BHD - BWI

1 stop29h 05mBritish Airways

Deal found 31/3£491

Mon 28/418:50BWI - BFS

2 stops18h 55mMultiple Airlines

Mon 5/506:45BFS - BWI

2 stops15h 55mMultiple Airlines

Deal found 31/3£491

Mon 28/420:30BWI - BHD

2 stops15h 50mMultiple Airlines

Mon 5/507:05BHD - BWI

3 stops38h 41mMultiple Airlines

Deal found 31/3£599

One-way flights from Washington, D.C. to Northern Ireland
Search for one-way flight options from Washington, D.C. to Northern Ireland. Find affordable one-way fares based on user searches. Data last updated 31 March 2025.

Fri 22/820:30BWI - BHD

2 stops32h 40mMultiple Airlines

Deal found 31/3£310

Fri 6/611:35IAD - BHD

3 stops47h 20mMultiple Airlines

Deal found 31/3£333

Fri 6/606:59DCA - BHD

2 stops32h 11mMultiple Airlines

Deal found 31/3£365

Fri 22/817:55IAD - BHD

1 stop9h 55mBritish Airways

Deal found 31/3£371

Fri 22/819:45DCA - BHD

2 stops14h 45mBritish Airways

Deal found 31/3£375

Fri 22/821:20BWI - BHD

1 stop15h 55mBritish Airways

Deal found 31/3£377

Fri 6/623:15IAD - BFS

2 stops15h 50mMultiple Airlines

Deal found 31/3£498

Fri 20/617:40IAD - BHD

1 stop10h 10mAmerican Airlines

Deal found 31/3£511

Fri 20/617:20IAD - BHD

2 stops16h 15mAer Lingus

Deal found 31/3£518

Fri 20/618:50BWI - BFS

2 stops16h 50mMultiple Airlines

Deal found 31/3£531

Fri 20/619:50BWI - BHD

2 stops16h 05mKLM

Deal found 31/3£538

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

Tue 6/5

18:50-23:10

2 stops23h 20m

Belfast Intl

Wed 14/5

06:00-17:40

2 stops16h 40m

£403

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Mon 28/4

21:20-15:40

1 stop13h 20m

Belfast City

Mon 5/5

19:30-19:35

1 stop29h 05m

£491

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 6/5

17:40-09:00

1 stop10h 20m

Belfast City

Wed 14/5

13:50-20:05

1 stop11h 15m

£510

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Tue 6/5

18:20-15:20

2 stops16h 00m

Belfast City

Wed 14/5

11:30-19:35

1 stop13h 05m

£514

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Tue 6/5

14:54-10:35

2 stops14h 41m

Belfast City

Wed 14/5

10:00-22:15

2 stops17h 15m

£522

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 6/5

13:59-10:35

2 stops15h 36m

Belfast City

Wed 14/5

10:00-15:45

1 stop10h 45m

£537

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Mon 12/5

20:30-22:40

2 stops21h 10m

Belfast Intl

Mon 19/5

12:35-20:50

3 stops37h 15m

£572

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 6/5

17:32-21:05

2 stops22h 33m

Belfast City

Wed 14/5

06:30-21:34

2 stops20h 04m

£591

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Mon 28/4

20:30-17:20

2 stops15h 50m

Belfast City

Mon 5/5

07:05-16:46

3 stops38h 41m

£599

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Fri 6/6

19:00-15:30

2 stops15h 30m

Belfast City

Fri 20/6

06:35-16:59

2 stops15h 24m

£671

Flights are sorted by cheapest return flights first.

Deals found on 31/3

Showing 1-10 of 26 results

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

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from Washington, D.C. 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 Washington, D.C. to Northern Ireland

Rainfall in Northern Ireland by month

In terms of precipitation, rainfall in Northern Ireland ranges from 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Northern Ireland when rainfall is around 50.0 mm.

Temperature in Northern Ireland by month

If weather is an important factor for your trip to Northern Ireland, 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 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

Reviews of airlines servicing Northern Ireland

To help decide which airline to fly from Washington, D.C. to Northern Ireland, see what other customers have to say about Delta, KLM and American Airlines. 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

7,899 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very Good

7,899 reviews

Delta

8.0

Very Good

7,899 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,321 reviews

Delta

8.0

Very Good

7,899 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very Good

7,899 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Aer Lingus

7.0

Good

1,061 reviews

Delta

8.0

Very Good

7,899 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

British Airways

6.6

Okay

6,713 reviews

Delta

8.0

Very Good

7,899 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What are the cheapest airlines to fly from Washington, D.C. to Northern Ireland one-way?
To fly one-way, consider booking your trip with British Airways, which is currently one of the cheapest options available, starting at £371. American Airlines flights start at £511 while deals on Aer Lingus start at £518 one-way.
What are the most popular routes from Washington, D.C. to Northern Ireland?
While some choose either Washington, D.C. Reagan-National - Belfast Intl or Washington, D.C. Dulles Intl - Belfast City, Washington, D.C. Dulles Intl - Belfast Intl is the most popular route from Washington, D.C. to Northern Ireland.
Can I find deals for flights from Washington, D.C. to Northern Ireland that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to Northern Ireland flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to Northern Ireland?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Northern Ireland.
Can I find deals for business class flights from Washington, D.C. to Northern Ireland?
Yes. Cheapflights offers flight deals from Washington, D.C. to Northern Ireland 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 Washington, D.C. to Northern Ireland?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Northern Ireland (average of £67). Flying from Washington, D.C. to Northern Ireland in July is currently the most expensive (average of £90). 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

Browse thousands of different options on Cheapflights for your next trip

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

Direct flights to United Kingdom

Fly with Cheapflights

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Washington, D.C. to Northern Ireland. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Washington, D.C. to Northern Ireland for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Yes, we can. To see specific flights from Washington, D.C. to Northern Ireland with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Of course! You can now track prices for flights from Washington, D.C. to Northern Ireland and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Washington, D.C. to Northern Ireland from £310

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 22/8. Fares are subject to change and may not be available on all flights or dates of travel.

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

Keep the following information in mind while searching for Washington, D.C. to Northern Ireland flight deals. Data was last updated 31 March 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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

Cheapest flights from Washington, D.C. to Northern IrelandExplore the most affordable flight options available from Washington, D.C. to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 March 2025.

Explore the most affordable flight options available from Washington, D.C. to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 March 2025.

Cheapflights Fare Finder

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

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

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from Washington, D.C. with our price prediction graph.

Cheapflights Insights

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

Rainfall in Northern Ireland by month

Plan your trip to Northern Ireland by taking into account the average rainfall totals by month.

Temperature in Northern Ireland by month

Plan your trip to Northern Ireland by taking into account the average temperature totals by month.

Reviews of airlines servicing Northern Ireland

To help decide which airline to fly from Washington, D.C. to Northern Ireland, see what other customers have to say about Delta, KLM and American Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Northern Ireland. 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 Washington, D.C. to Northern Ireland one-way?

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

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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

See prices for flight routes from nearby airports that may be better suited for you.

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 Washington, D.C. to Northern Ireland?

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

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

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

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Washington, D.C. to Northern Ireland
Explore the most affordable flight options available from Washington, D.C. to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 March 2025.