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Cheap flights from Washington, D.C. to Belfast from £280

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 24/6. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BHD
8 4月 — 15 4月1
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 3 4月 2025.

Round-trip from

£510

One-way from

£280

Popular in

June

Cheapest in

January

Average price

£508
3/9-21/9
  • 3/9-21/9
  • 4 total stops
  • 39h 00m total
  • Washington, D.C. to Belfast
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24/6
  • 24/6
  • 2 total stops
  • 24h 40m total
  • Washington, D.C. to Belfast
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£105 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease (£20 potential savings vs. average return price).
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Average for round-trip flights in April 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 3 4月 2025.

週二 28/1015:59DCA - BHD
2 stops14h 31mBritish Airways
週日 2/1105:30BHD - DCA
2 stops14h 55mBritish Airways
Deal found 2/4£510
週三 3/918:50BWI - BFS
2 stops23h 20mMultiple Airlines
週日 21/907:00BFS - BWI
2 stops15h 40mMultiple Airlines
Deal found 2/4£510
週三 3/922:40IAD - BHD
1 stop11h 55mBritish Airways
週日 21/906:50BHD - IAD
1 stop15h 40mBritish Airways
Deal found 2/4£519
週三 3/921:20BWI - BHD
1 stop11h 10mBritish Airways
週日 21/911:00BHD - BWI
1 stop13h 35mBritish Airways
Deal found 2/4£519
週二 28/1018:35IAD - BHD
1 stop22h 25mVirgin Atlantic
週日 2/1105:30BHD - IAD
1 stop14h 15mVirgin Atlantic
Deal found 2/4£530
週三 3/914:10BWI - BHD
2 stops16h 45mAmerican Airlines
週日 21/911:00BHD - BWI
1 stop13h 35mAmerican Airlines
Deal found 2/4£541
週三 30/717:39IAD - BHD
2 stops13h 16mAmerican Airlines
週六 16/809:35BHD - IAD
1 stop15h 40mAmerican Airlines
Deal found 2/4£574
週六 12/414:55DCA - BHD
2 stops14h 15mAmerican Airlines
週六 19/407:05BHD - DCA
2 stops16h 39mAmerican Airlines
Deal found 2/4£575
週三 3/920:30IAD - BHD
2 stops15h 25mKLM
週日 21/917:25BHD - IAD
1 stop27h 10mKLM
Deal found 2/4£600
週一 9/613:00BWI - BHD
2 stops22h 55mDelta
週一 23/608:30BHD - BWI
2 stops43h 46mDelta
Deal found 2/4£667
週三 3/917:20IAD - BHD
2 stops14h 45mAer Lingus
週日 21/906:50BHD - IAD
2 stops17h 05mAer Lingus
Deal found 2/4£690
週五 13/617:25IAD - BHD
1 stop18h 30mDelta
週五 4/706:30BHD - IAD
2 stops18h 20mDelta
Deal found 2/4£717

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 3 4月 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

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

週三 3/9

18:50-23:10

2 stops23h 20m

Belfast Intl

週日 21/9

07:00-17:40

2 stops15h 40m

£510

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

週三 3/9

22:40-15:35

1 stop11h 55m

Belfast City

週日 21/9

06:50-17:30

1 stop15h 40m

£519

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

週三 3/9

21:20-13:30

1 stop11h 10m

Belfast City

週日 21/9

11:00-19:35

1 stop13h 35m

£519

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

週三 3/9

15:13-13:30

2 stops17h 17m

Belfast City

週日 21/9

18:05-16:16

2 stops27h 11m

£529

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

週三 3/9

14:10-11:55

2 stops16h 45m

Belfast City

週日 21/9

11:00-19:35

1 stop13h 35m

£541

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

週三 30/7

17:39-11:55

2 stops13h 16m

Belfast City

週六 16/8

09:35-20:15

1 stop15h 40m

£574

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

週三 3/9

20:30-16:55

2 stops15h 25m

Belfast City

週日 21/9

17:25-15:35

1 stop27h 10m

£600

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

週一 9/6

13:00-16:55

2 stops22h 55m

Belfast City

週一 23/6

08:30-23:16

2 stops43h 46m

£667

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

週三 3/9

17:20-13:05

2 stops14h 45m

Belfast City

週日 21/9

06:50-18:55

2 stops17h 05m

£690

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

週五 13/6

17:25-16:55

1 stop18h 30m

Belfast City

週五 4/7

06:30-19:50

2 stops18h 20m

£717

Flights are sorted by cheapest return flights first.

Deals found on 3/4

Showing 1-10 of 26 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

Rainfall in Belfast by month

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

In terms of precipitation, rainfall in Belfast 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 Belfast when rainfall is around 50.0 mm.

Temperature in Belfast by month

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

If weather is an important factor for your trip to Belfast, 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 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 3 4月 2025.
To help decide which airline to fly from Washington, D.C. to Belfast, see what other customers have to say about Delta, KLM and American Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,897 reviews
Check prices

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

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
7,897 reviews
Delta
8.0
Very Good
7,897 reviews
Check prices

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

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
1,323 reviews
Delta
8.0
Very Good
7,897 reviews
Check prices

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

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
7,897 reviews
Check prices

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

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
1,059 reviews
Delta
8.0
Very Good
7,897 reviews
Check prices

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

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.
Iberia
7.0
Good
2,659 reviews
Delta
8.0
Very Good
7,897 reviews
Check prices

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

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

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 £519, was found to be the cheapest airline from Washington, D.C. to Belfast.Alternate airlines flying return to your destination include American Airlines and KLM. You may be able to fly from Washington, D.C. to Belfast for 10% 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 Washington, D.C. Dulles Intl - Belfast Intl, Washington, D.C. Dulles Intl - Belfast City and Baltimore/Washington - Belfast Intl.

  • 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

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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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