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

The cheapest airline one-way is Aer Lingus, with whom users have recently found tickets for as low as $894. However, be on the lookout for offers from Finnair and Iberia, as they are both options that can get you from Northern Ireland to Washington, D.C. for a low price.

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

Currently, August is the cheapest month in which you can book a flight from Northern Ireland to Washington, D.C. (average of $309). Flying from Northern Ireland to Washington, D.C. in June is currently the most expensive (average of $373). 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 Northern Ireland to Washington, D.C.?

The most popular route from Northern Ireland to Washington, D.C. is Belfast Intl - Washington, D.C. Dulles Intl. You may also consider Belfast Intl - Baltimore/Washington or Belfast Intl - Washington, D.C. Reagan-National.

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.

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.

$822+ Flights from Northern Ireland to Washington, D.C. - Compare & Save Big

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

Round-trip from	$822 (Expedia)

From Northern Ireland to Washington, D.C. (WAS)

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 April 29, 2025.

Wed 9/31:50 pmBHD - BWI

1 stop10h 45mBritish Airways

Wed 10/19:20 pmBWI - BHD

1 stop13h 15mBritish Airways

Deal found 4/28

$822

Wed 9/31:50 pmBHD - IAD

1 stop11h 20mBritish Airways

Wed 10/15:50 pmIAD - BHD

1 stop10h 00mBritish Airways

Deal found 4/28

$835

Sun 9/78:05 pmBHD - DCA

2 stops22h 48mBritish Airways

Sun 9/287:45 pmDCA - BHD

2 stops32h 05mBritish Airways

Deal found 4/28

$850

Fri 9/56:30 amBHD - IAD

1 stop14h 05mDelta

Mon 9/295:25 pmIAD - BHD

1 stop18h 30mDelta

Deal found 4/28

$888

Wed 9/35:25 pmBHD - DCA

2 stops22h 00mDelta

Wed 10/18:15 pmDCA - BHD

2 stops15h 40mDelta

Deal found 4/28

$895

Wed 9/36:30 amBHD - BWI

2 stops20h 13mDelta

Wed 10/15:25 pmBWI - BHD

2 stops18h 30mDelta

Deal found 4/28

$895

Sun 9/78:05 pmBHD - BWI

1 stop28h 30mMultiple Airlines

Sat 9/279:20 pmBWI - BHD

1 stop9h 55mMultiple Airlines

Deal found 4/28

$901

Wed 9/35:25 pmBHD - IAD

2 stops23h 30mVirgin Atlantic

Wed 10/16:40 pmIAD - BHD

2 stops17h 15mVirgin Atlantic

Deal found 4/28

$1,036

Sun 9/78:05 pmBHD - IAD

2 stops27h 50mAer Lingus

Sun 9/285:20 pmIAD - BHD

2 stops13h 10mAer Lingus

Deal found 4/28

$1,049

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 layovers in mind to ensure you get the best travel experience. Data last updated April 29, 2025.

Wed 9/31:50 pmBHD - BWI

1 stop10h 45mBritish Airways

Wed 10/19:20 pmBWI - BHD

1 stop13h 15mBritish Airways

Deal found 4/28

$822

Fri 9/56:30 amBHD - IAD

1 stop14h 05mDelta

Mon 9/295:25 pmIAD - BHD

1 stop18h 30mDelta

Deal found 4/28

$888

Sun 9/78:05 pmBHD - BWI

1 stop28h 30mMultiple Airlines

Sat 9/279:20 pmBWI - BHD

1 stop9h 55mMultiple Airlines

Deal found 4/28

$901

Wed 9/35:25 pmBHD - IAD

2 stops23h 30mVirgin Atlantic

Wed 10/16:40 pmIAD - BHD

2 stops17h 15mVirgin Atlantic

Deal found 4/28

$1,036

Sun 9/78:05 pmBHD - IAD

2 stops27h 50mAer Lingus

Sun 9/285:20 pmIAD - BHD

2 stops13h 10mAer Lingus

Deal found 4/28

$1,049

Wed 9/31:50 pmBHD - IAD

1 stop11h 20mBritish Airways

Wed 10/15:50 pmIAD - BHD

1 stop10h 00mBritish Airways

Deal found 4/28

$835

Wed 9/35:25 pmBHD - DCA

2 stops22h 00mDelta

Wed 10/18:15 pmDCA - BHD

2 stops15h 40mDelta

Deal found 4/28

$895

Sun 9/78:05 pmBHD - DCA

2 stops22h 48mBritish Airways

Sun 9/287:45 pmDCA - BHD

2 stops32h 05mBritish Airways

Deal found 4/28

$850

Wed 9/36:30 amBHD - BWI

2 stops20h 13mDelta

Wed 10/15:25 pmBWI - BHD

2 stops18h 30mDelta

Deal found 4/28

$895

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 April 29, 2025.

Mon 6/305:55 pmBHD - IAD

2 stops26h 55mAer Lingus

Deal found 4/29

$894

Mon 6/307:30 pmBHD - BWI

1 stop29h 05mFinnair

Deal found 4/28

$1,693

Mon 6/307:30 pmBHD - IAD

1 stop25h 25mFinnair

Deal found 4/28

$1,694

Mon 6/309:50 amBHD - DCA

2 stops18h 17mIberia

Deal found 4/29

$1,696

Mon 6/307:30 pmBHD - DCA

2 stops32h 37mFinnair

Deal found 4/28

$1,699

Mon 6/306:40 amBHD - BWI

2 stops16h 42mBritish Airways

Deal found 4/28

$1,743

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

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Wed 9/3

1:50 pm-7:35 pm

1 stop10h 45m

Baltimore/Washington

Wed 10/1

9:20 pm-3:35 pm

1 stop13h 15m

$822

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 9/3

1:50 pm-8:10 pm

1 stop11h 20m

Washington, D.C. Dulles Intl

Wed 10/1

5:50 pm-8:50 am

1 stop10h 00m

$835

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Sun 9/7

8:05 pm-1:53 pm

2 stops22h 48m

Washington, D.C. Reagan-National

Sun 9/28

7:45 pm-8:50 am

2 stops32h 05m

$850

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Fri 9/5

6:30 am-3:35 pm

1 stop14h 05m

Washington, D.C. Dulles Intl

Mon 9/29

5:25 pm-4:55 pm

1 stop18h 30m

$888

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Wed 9/3

5:25 pm-10:25 am

2 stops22h 00m

Washington, D.C. Reagan-National

Wed 10/1

8:15 pm-4:55 pm

2 stops15h 40m

$895

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Wed 9/3

6:30 am-9:43 pm

2 stops20h 13m

Baltimore/Washington

Wed 10/1

5:25 pm-4:55 pm

2 stops18h 30m

$895

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Sun 9/7

8:05 pm-7:35 pm

1 stop28h 30m

Baltimore/Washington

Sat 9/27

9:20 pm-12:15 pm

1 stop9h 55m

$901

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 9/3

5:25 pm-11:55 am

2 stops23h 30m

Washington, D.C. Dulles Intl

Wed 10/1

6:40 pm-4:55 pm

2 stops17h 15m

$1,036

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Sun 9/7

8:05 pm-6:55 pm

2 stops27h 50m

Washington, D.C. Dulles Intl

Sun 9/28

5:20 pm-11:30 am

2 stops13h 10m

$1,049

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 6/30

5:55 pm-3:50 pm

2 stops26h 55m

$894

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 15 results

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 round-trip 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.

Rainfall in Washington, D.C. by month

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Washington, D.C.

Peruse reviews from past customers who have flown with Delta, Finnair and Virgin Atlantic from Northern Ireland to Washington, D.C. to help guide your decision. 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

7,936 reviews

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

Delta

8.0

Very good

7,936 reviews

Delta

8.0

Very good

7,936 reviews

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

Finnair

7.6

Good

1,273 reviews

Delta

8.0

Very good

7,936 reviews

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

Virgin Atlantic

7.4

Good

642 reviews

Delta

8.0

Very good

7,936 reviews

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

Aer Lingus

7.0

Good

1,076 reviews

Delta

8.0

Very good

7,936 reviews

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

Iberia

7.0

Good

2,696 reviews

Delta

8.0

Very good

7,936 reviews

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?
The cheapest airline one-way is Aer Lingus, with whom users have recently found tickets for as low as $894. However, be on the lookout for offers from Finnair and Iberia, as they are both options that can get you from Northern Ireland to Washington, D.C. for a low price.
What are the most popular routes from Northern Ireland to Washington, D.C.?
The most popular route from Northern Ireland to Washington, D.C. is Belfast Intl - Washington, D.C. Dulles Intl. You may also consider Belfast Intl - Baltimore/Washington or Belfast Intl - Washington, D.C. Reagan-National.
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 vacation 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, August is the cheapest month in which you can book a flight from Northern Ireland to Washington, D.C. (average of $309). Flying from Northern Ireland to Washington, D.C. in June is currently the most expensive (average of $373). 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

Alexandria

Arlington

Woodbridge

Tysons

Fairfax

Springfield

Rockville

Fredericksburg

Silver Spring

Gaithersburg

Linthicum Heights

Falls Church

Laurel

Easton

Towson

Herndon

Bowie

National Harbor

Oxon Hill

Reston

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$822+ Cheap flights from Northern Ireland to Washington, D.C. (WAS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/3. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Northern Ireland to Washington, D.C. with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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 April 29, 2025.

Round-trip from

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 April 29, 2025.

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 April 29, 2025.

Cheapflights Fare Finder

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

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.

Cheapflights Insights

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

Rainfall in Washington, D.C. by month

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

Temperature in Washington, D.C. by month

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

Reviews of airlines servicing Washington, D.C.

Peruse reviews from past customers who have flown with Delta, Finnair and Virgin Atlantic from Northern Ireland to Washington, D.C. to help guide your decision. 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 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?

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

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

How can I 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.?

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

Traveling to a place near Northern Ireland?

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

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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 April 29, 2025.