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. Dulles Intl - Belfast City or Baltimore/Washington - Belfast Intl, 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 July. Prices are generally better when you fly from Washington, D.C. to Northern Ireland in October, with the cheapest ticket starting at £473.

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.

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.

£500+ Flights from Washington, D.C. to Northern Ireland

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

Round-trip from	£500

British Airways
29/4-13/5
2 total stops
21h 40m total
Washington, D.C. to Northern Ireland

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 17 1월 2025.

화 29/417:50IAD - BHD

1 stop10h 10mBritish Airways

화 13/513:40BHD - IAD

1 stop11h 30mBritish Airways

Deal found 15/1£500

화 29/421:20BWI - BHD

1 stop13h 00mBritish Airways

화 13/513:40BHD - BWI

1 stop10h 55mBritish Airways

Deal found 15/1£506

월 27/119:40IAD - BFS

2 stops20h 25mMultiple Airlines

금 31/106:30BFS - IAD

2 stops16h 55mMultiple Airlines

Deal found 16/1£515

화 29/415:59DCA - BHD

2 stops13h 36mAmerican Airlines

화 13/506:35BHD - DCA

2 stops15h 23mAmerican Airlines

Deal found 15/1£517

금 17/117:26BWI - BHD

2 stops18h 49mAmerican Airlines

금 24/111:30BHD - BWI

1 stop12h 15mAmerican Airlines

Deal found 16/1£533

일 2/307:00BWI - BFS

3 stops25h 55mMultiple Airlines

일 9/321:10BFS - BWI

2 stops24h 50mMultiple Airlines

Deal found 16/1£540

토 1/317:55DCA - BHD

2 stops15h 20mBritish Airways

토 8/309:10BHD - DCA

2 stops16h 04mBritish Airways

Deal found 15/1£540

월 27/119:40IAD - BHD

2 stops19h 50mMultiple Airlines

금 31/107:25BHD - IAD

2 stops16h 00mMultiple Airlines

Deal found 16/1£546

화 29/418:55IAD - BHD

2 stops17h 00mKLM

수 14/517:25BHD - IAD

1 stop27h 10mKLM

Deal found 15/1£548

월 28/418:55IAD - BHD

2 stops17h 00mDelta

월 12/506:30BHD - IAD

1 stop14h 05mDelta

Deal found 15/1£569

월 28/418:15BWI - BHD

2 stops17h 40mDelta

월 12/506:30BHD - BWI

2 stops21h 25mDelta

Deal found 15/1£578

월 28/415:10DCA - BHD

2 stops20h 45mDelta

월 12/506:30BHD - DCA

2 stops17h 48mDelta

Deal found 15/1£578

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 17 1월 2025.

화 29/417:50IAD - BHD

1 stop10h 10mBritish Airways

화 13/513:40BHD - IAD

1 stop11h 30mBritish Airways

Deal found 15/1£500

월 27/119:40IAD - BFS

2 stops20h 25mMultiple Airlines

금 31/106:30BFS - IAD

2 stops16h 55mMultiple Airlines

Deal found 16/1£515

화 29/415:59DCA - BHD

2 stops13h 36mAmerican Airlines

화 13/506:35BHD - DCA

2 stops15h 23mAmerican Airlines

Deal found 15/1£517

화 29/418:55IAD - BHD

2 stops17h 00mKLM

수 14/517:25BHD - IAD

1 stop27h 10mKLM

Deal found 15/1£548

월 28/418:55IAD - BHD

2 stops17h 00mDelta

월 12/506:30BHD - IAD

1 stop14h 05mDelta

Deal found 15/1£569

토 1/317:10IAD - BHD

2 stops15h 05mAer Lingus

토 8/306:30BHD - IAD

2 stops14h 10mAer Lingus

Deal found 15/1£702

토 12/417:50IAD - BHD

1 stop11h 20mIberia

토 19/416:15BHD - IAD

1 stop33h 00mIberia

Deal found 16/1£745

화 29/421:20BWI - BHD

1 stop13h 00mBritish Airways

화 13/513:40BHD - BWI

1 stop10h 55mBritish Airways

Deal found 15/1£506

일 2/307:00BWI - BFS

3 stops25h 55mMultiple Airlines

일 9/321:10BFS - BWI

2 stops24h 50mMultiple Airlines

Deal found 16/1£540

월 28/418:15BWI - BHD

2 stops17h 40mDelta

월 12/506:30BHD - BWI

2 stops21h 25mDelta

Deal found 15/1£578

금 31/115:30BWI - BHD

2 stops20h 20mKLM

토 8/206:30BHD - BWI

2 stops15h 30mKLM

Deal found 16/1£586

토 1/317:55DCA - BHD

2 stops15h 20mBritish Airways

토 8/309:10BHD - DCA

2 stops16h 04mBritish Airways

Deal found 15/1£540

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 17 1월 2025 and is based on user searches.

금 17/117:26BWI - BHD

2 stops18h 49mAmerican Airlines

금 24/111:30BHD - BWI

1 stop12h 15mAmerican Airlines

Deal found 16/1£533

월 27/119:40IAD - BFS

2 stops20h 25mMultiple Airlines

금 31/106:30BFS - IAD

2 stops16h 55mMultiple Airlines

Deal found 16/1£515

월 27/119:40IAD - BHD

2 stops19h 50mMultiple Airlines

금 31/107:25BHD - IAD

2 stops16h 00mMultiple Airlines

Deal found 16/1£546

월 27/118:00IAD - BHD

1 stop11h 30mBritish Airways

금 31/106:45BHD - IAD

1 stop13h 50mBritish Airways

Deal found 16/1£802

월 27/120:30BWI - BHD

1 stop12h 40mBritish Airways

금 31/110:10BHD - BWI

1 stop13h 35mBritish Airways

Deal found 16/1£802

월 27/115:29DCA - BHD

2 stops14h 01mBritish Airways

금 31/106:45BHD - DCA

2 stops14h 56mBritish Airways

Deal found 16/1£813

금 31/121:55IAD - BHD

1 stop14h 20mBritish Airways

토 8/209:10BHD - IAD

1 stop11h 25mBritish Airways

Deal found 16/1£529

금 31/120:30BWI - BHD

1 stop12h 45mBritish Airways

토 8/218:00BHD - BWI

1 stop29h 45mBritish Airways

Deal found 16/1£529

금 31/115:59DCA - BHD

2 stops13h 31mBritish Airways

토 8/215:05BHD - DCA

2 stops23h 27mBritish Airways

Deal found 16/1£541

금 31/115:30BWI - BHD

2 stops20h 20mKLM

토 8/206:30BHD - BWI

2 stops15h 30mKLM

Deal found 16/1£586

금 31/117:10IAD - BHD

2 stops21h 25mAer Lingus

토 8/217:30BHD - IAD

2 stops27h 10mAer Lingus

Deal found 16/1£725

일 2/219:40IAD - BHD

2 stops19h 50mMultiple Airlines

목 6/207:30BHD - IAD

2 stops15h 55mMultiple Airlines

Deal found 15/1£542

Find flights from Washington, D.C. to Northern Ireland within your budget

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

화 29/4

17:50-09:00

1 stop10h 10m

Belfast City

화 13/5

13:40-20:10

1 stop11h 30m

£500

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

화 29/4

21:20-15:20

1 stop13h 00m

Belfast City

화 13/5

13:40-19:35

1 stop10h 55m

£506

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

월 27/1

19:40-21:05

2 stops20h 25m

Belfast Intl

금 31/1

06:30-18:25

2 stops16h 55m

£515

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

화 29/4

15:59-10:35

2 stops13h 36m

Belfast City

화 13/5

06:35-16:58

2 stops15h 23m

£517

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

일 2/3

07:00-13:55

3 stops25h 55m

Belfast Intl

일 9/3

21:10-18:00

2 stops24h 50m

£540

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

토 1/3

17:55-14:15

2 stops15h 20m

Belfast City

토 8/3

09:10-20:14

2 stops16h 04m

£540

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

월 27/1

19:40-20:30

2 stops19h 50m

Belfast City

금 31/1

07:25-18:25

2 stops16h 00m

£546

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

화 29/4

18:55-16:55

2 stops17h 00m

Belfast City

수 14/5

17:25-15:35

1 stop27h 10m

£548

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

월 28/4

18:55-16:55

2 stops17h 00m

Belfast City

월 12/5

06:30-15:35

1 stop14h 05m

£569

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

월 28/4

18:15-16:55

2 stops17h 40m

Belfast City

월 12/5

06:30-22:55

2 stops21h 25m

£578

Flights are sorted by cheapest return flights first.

Deals found on 15/1

Showing 1-10 of 17 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.

Travel insights for flights from Washington, D.C. to Northern Ireland

Get recent, data-driven insights about flights from Washington, D.C. to Northern Ireland including ideal travel times, pricing trends, and more.

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 British Airways, KLM and Delta. 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

8,513 reviews

Check prices

Reviews

1 / 10

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

Delta

8.0

Very Good

8,513 reviews

Delta

8.0

Very Good

8,513 reviews

Check prices

Reviews

1 / 10

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

KLM

7.8

Good

1,339 reviews

Delta

8.0

Very Good

8,513 reviews

Check prices

Reviews

1 / 10

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

8,513 reviews

Check prices

Reviews

1 / 10

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

Aer Lingus

7.1

Good

1,077 reviews

Delta

8.0

Very Good

8,513 reviews

Check prices

Reviews

1 / 10

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

Iberia

7.0

Good

2,641 reviews

Delta

8.0

Very Good

8,513 reviews

Check prices

Reviews

1 / 10

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 most popular routes from Washington, D.C. to Northern Ireland?
While some choose either Washington, D.C. Dulles Intl - Belfast City or Baltimore/Washington - Belfast Intl, 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 £500

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 29/4. 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

Round-trip from

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 17 1월 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 17 1월 2025.

Find flights from Washington, D.C. to Northern Ireland within your budget

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.

Travel insights for flights from Washington, D.C. to Northern Ireland

Get recent, data-driven insights about flights from Washington, D.C. to Northern Ireland including ideal travel times, pricing trends, and more.

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 British Airways, KLM and Delta. 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 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 17 1월 2025.