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Cheap flights from Washington, D.C. to Belfast from £215

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 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BHD
16 Jul — 23 Jul1
1 adult

Cheap flight deals from Washington, D.C. to Belfast

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Belfast (BF1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 11 July 2025.

Round-trip from

£472

One-way from

£215

Popular in

June

Cheapest in

August

Average price

£753
British Airways
  • British Airways
  • 12/10-19/10
  • 4 total stops
  • 44h 55m total
  • Washington, D.C. to Belfast
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8/9
  • 8/9
  • 2 total stops
  • 39h 41m total
  • Washington, D.C. to Belfast
Search Deals
Highest demand for flights based on searches. 22% potential increase in price (£118 potential increase over avg. return price).
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Cheapest flight prices on average. 6% potential price decrease (£24 potential savings vs. average return price).
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Average for round-trip flights in July 2025
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Find flight deals from Washington, D.C. to Belfast

Cheapest flights from Washington, D.C. to Belfast
Explore the most affordable flight options available from Washington, D.C. to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.

Sun 12/1020:25IAD - BHD
2 stops16h 15mBritish Airways
Sun 19/1020:05BHD - IAD
2 stops28h 40mBritish Airways
Deal found 9/7£472
Sun 12/1016:38DCA - BHD
2 stops13h 52mBritish Airways
Sun 19/1011:00BHD - DCA
2 stops16h 57mBritish Airways
Deal found 9/7£472
Sun 12/1018:50BWI - BFS
2 stops23h 30mMultiple Airlines
Sun 19/1022:40BFS - BWI
2 stops24h 00mMultiple Airlines
Deal found 9/7£474
Sat 6/917:56BWI - BHD
2 stops18h 19mBritish Airways
Sat 20/1206:35BHD - BWI
2 stops15h 58mBritish Airways
Deal found 9/7£497
Sun 12/1017:25IAD - BHD
1 stop18h 30mMultiple Airlines
Sun 19/1006:30BHD - IAD
1 stop14h 05mMultiple Airlines
Deal found 9/7£522
Sat 9/812:12IAD - BHD
2 stops23h 43mDelta
Mon 8/906:30BHD - IAD
1 stop14h 05mDelta
Deal found 10/7£525
Wed 12/1111:00IAD - BHD
2 stops29h 00mVirgin Atlantic
Sun 16/1106:30BHD - IAD
1 stop14h 15mVirgin Atlantic
Deal found 9/7£525
Sat 9/819:42BWI - BHD
2 stops16h 13mDelta
Mon 8/906:30BHD - BWI
2 stops21h 47mDelta
Deal found 10/7£532
Wed 8/1017:15DCA - BHD
2 stops23h 00mVirgin Atlantic
Sun 12/1006:30BHD - DCA
2 stops32h 52mVirgin Atlantic
Deal found 10/7£532
Wed 8/1017:00DCA - BHD
2 stops18h 55mDelta
Sun 12/1006:30BHD - DCA
2 stops21h 59mDelta
Deal found 9/7£533
Wed 12/1118:05IAD - BHD
1 stop17h 45mKLM
Sun 16/1106:30BHD - IAD
1 stop14h 35mKLM
Deal found 9/7£560
Sun 12/1017:45IAD - BFS
3 stops22h 45mMultiple Airlines
Sun 19/1006:10BFS - IAD
3 stops32h 28mMultiple Airlines
Deal found 9/7£601

Cheapflights Fare Finder

Customise your flight search to find flights from Washington, D.C. to Belfast 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 11 July 2025.
Use the filters below to find and compare flights from Washington, D.C. to Belfast that are best for you.

Fly from

Washington, D.C.

Fly to

Belfast

Route

Depart

Return

Price

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 12/10

20:25-17:40

2 stops16h 15m

Belfast City

Sun 19/10

20:05-19:45

2 stops28h 40m

£472

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Sun 12/10

16:38-11:30

2 stops13h 52m

Belfast City

Sun 19/10

11:00-22:57

2 stops16h 57m

£472

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

Sun 12/10

18:50-23:20

2 stops23h 30m

Belfast Intl

Sun 19/10

22:40-17:40

2 stops24h 00m

£474

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Sat 6/9

17:56-17:15

2 stops18h 19m

Belfast City

Sat 20/12

06:35-17:33

2 stops15h 58m

£497

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 12/10

17:25-16:55

1 stop18h 30m

Belfast City

Sun 19/10

06:30-15:35

1 stop14h 05m

£522

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sat 9/8

12:12-16:55

2 stops23h 43m

Belfast City

Mon 8/9

06:30-15:35

1 stop14h 05m

£525

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 12/11

11:00-21:00

2 stops29h 00m

Belfast City

Sun 16/11

06:30-15:45

1 stop14h 15m

£525

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Sat 9/8

19:42-16:55

2 stops16h 13m

Belfast City

Mon 8/9

06:30-23:17

2 stops21h 47m

£532

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Wed 8/10

17:15-21:15

2 stops23h 00m

Belfast City

Sun 12/10

06:30-10:22

2 stops32h 52m

£532

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Wed 8/10

17:00-16:55

2 stops18h 55m

Belfast City

Sun 12/10

06:30-23:29

2 stops21h 59m

£533

Flights are sorted by cheapest return flights first.

Deals found on 10/7

Showing 1-10 of 27 results
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Best time to book a flight from Washington, D.C. to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast 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 Belfast

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

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Belfast (average of £67). Flying from Washington, D.C. to Belfast 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.

Reviews of airlines servicing Belfast

Get insights into the airlines that provide service to Belfast. 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 Belfast. Reviews last updated 11 July 2025.
Get a feel of what it's like to fly with Delta, KLM, andFinnair from Washington, D.C. to Belfast by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,951 reviews
Check prices

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very Good
7,951 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,372 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Finnair
7.6
Good
1,312 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Virgin Atlantic
7.4
Good
654 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very Good
7,951 reviews
Check prices

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Belfast. 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 flying from Washington, D.C. to Belfast round-trip?

    British Airways, at £472, was found to be the cheapest airline from Washington, D.C. to Belfast.Alternate airlines flying return to your destination include Delta and Virgin Atlantic. You may be able to fly from Washington, D.C. to Belfast for 15% less than the average price by searching for these airlines.

  • What are the most popular routes from Washington, D.C. to Belfast?

    The most popular flight routes from Washington, D.C. to Belfast are Baltimore/Washington - Belfast Intl, Washington, D.C. Dulles Intl - Belfast Intl and Baltimore/Washington - Belfast City.

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

    Yes. In addition to deals on Washington, D.C. to Belfast flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to Belfast?

    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 Belfast.

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

    Yes. Cheapflights offers flight deals from Washington, D.C. to Belfast 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 Belfast?

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Belfast (average of £67). Flying from Washington, D.C. to Belfast 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

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Complete your trip

Complete your trip to Belfast by adding a car hire and/or hotel booking to your travel itinerary.
Belfast car hire
Belfast Intl Airport car hire
Londonderry Eglinton Airport car hire
Isle of Islay Glenegedale Airport car hire
Londonderry car hire

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 Belfast?

Cheapflights makes it easy to find Washington, D.C. to Belfast flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Belfast from Washington, D.C..

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Washington, D.C. to Belfast, users can toggle the no change fees filter when performing a flight search.

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

Yes, Cheapflights offers price alerts on Washington, D.C. to Belfast flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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