What are the cheapest airlines flying from Washington, D.C. to Belfast round-trip?

British Airways, at £547, was found to be the cheapest airline from Washington, D.C. to Belfast.Alternate airlines flying return to your destination include American Airlines and Delta. You may be able to fly from Washington, D.C. to Belfast for 5% 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.

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

The best pricing can be found in the month of January. Prices to Belfast from Washington, D.C. average £579. You can even find prices in January for less than £579, as users have found deals to Belfast from as low as £484. The month of June appears to be one of the more expensive times to travel to Belfast from Washington, D.C.. Flying in the targeted month can save you up to 43%.

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

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 Belfast as you normally would.

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.

£339+ Flights from Washington, D.C. to Belfast

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

Round-trip from	£547
One-way from	£339
Popular in	June
Cheapest in	January
Average price	£547

British Airways
13/4-19/4
4 total stops
47h 19m total
Washington, D.C. to Belfast

Search Deals

17/6
2 total stops
33h 00m total
Washington, D.C. to Belfast

Search Deals

Highest demand for flights based on searches. 21% potential increase in price (£128 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£19 potential savings vs. average return price).

Search Deals

Average for round-trip flights in February 2025

Search Deals

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 21 February 2025.

Sat 4/1022:50IAD - BHD

1 stop11h 15mBritish Airways

Sat 11/1009:35BHD - IAD

1 stop15h 45mBritish Airways

Deal found 20/2£507

Sat 4/1021:20BWI - BHD

1 stop12h 45mBritish Airways

Sat 11/1009:35BHD - BWI

1 stop15h 00mBritish Airways

Deal found 20/2£520

Sat 4/1015:59DCA - BHD

2 stops13h 11mBritish Airways

Sat 11/1007:05BHD - DCA

2 stops17h 54mBritish Airways

Deal found 20/2£531

Sun 6/418:50BWI - BFS

2 stops22h 30mMultiple Airlines

Sun 13/423:30BFS - BWI

3 stops23h 10mMultiple Airlines

Deal found 20/2£580

Sat 12/414:55DCA - BHD

2 stops14h 15mAmerican Airlines

Sat 19/407:05BHD - DCA

2 stops16h 39mAmerican Airlines

Deal found 20/2£594

Wed 9/410:59BWI - BHD

2 stops29h 16mDelta

Mon 21/417:25BHD - BWI

2 stops45h 23mDelta

Deal found 19/2£638

Sun 6/420:30IAD - BFS

2 stops20h 00mMultiple Airlines

Sun 13/423:30BFS - IAD

3 stops24h 50mMultiple Airlines

Deal found 21/2£673

Wed 9/410:59BWI - BHD

2 stops19h 56mAmerican Airlines

Thu 17/413:15BHD - BWI

1 stop11h 20mAmerican Airlines

Deal found 19/2£684

Wed 9/414:20DCA - BHD

2 stops21h 35mDelta

Thu 17/406:30BHD - DCA

2 stops21h 40mDelta

Deal found 19/2£692

Fri 11/420:25IAD - BHD

2 stops14h 05mAer Lingus

Sun 27/406:50BHD - IAD

2 stops14h 00mAer Lingus

Deal found 20/2£711

Wed 9/413:35IAD - BHD

2 stops26h 40mDelta

Mon 21/417:25BHD - IAD

2 stops28h 09mDelta

Deal found 19/2£718

Sat 12/417:50IAD - BHD

1 stop16h 15mIberia

Sat 19/416:15BHD - IAD

1 stop33h 00mIberia

Deal found 20/2£728

Best flights from Washington, D.C. to Belfast
Discover carefully curated flight deals from Washington, D.C. to Belfast that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 February 2025.

Sun 13/406:35DCA - BHD

2 stops21h 30mBritish Airways

Sat 19/419:30BHD - DCA

2 stops25h 49mBritish Airways

Deal found 20/2£547

Sun 6/418:50BWI - BFS

2 stops22h 30mMultiple Airlines

Sun 13/423:30BFS - BWI

3 stops23h 10mMultiple Airlines

Deal found 20/2£580

Sat 12/414:55DCA - BHD

2 stops14h 15mAmerican Airlines

Sat 19/407:05BHD - DCA

2 stops16h 39mAmerican Airlines

Deal found 20/2£594

Wed 9/410:59BWI - BHD

2 stops29h 16mDelta

Mon 21/417:25BHD - BWI

2 stops45h 23mDelta

Deal found 19/2£638

Fri 11/420:25IAD - BHD

2 stops14h 05mAer Lingus

Sun 27/406:50BHD - IAD

2 stops14h 00mAer Lingus

Deal found 20/2£711

Sat 12/417:50IAD - BHD

1 stop16h 15mIberia

Sat 19/416:15BHD - IAD

1 stop33h 00mIberia

Deal found 20/2£728

Mon 10/319:59IAD - BHD

2 stops16h 51mKLM

Sat 15/306:30BHD - IAD

1 stop14h 15mKLM

Deal found 21/2£801

Fri 11/417:25IAD - BHD

1 stop22h 50mVirgin Atlantic

Sun 27/406:30BHD - IAD

1 stop14h 05mVirgin Atlantic

Deal found 20/2£1,114

Sun 6/420:30IAD - BFS

2 stops20h 00mMultiple Airlines

Sun 13/423:30BFS - IAD

3 stops24h 50mMultiple Airlines

Deal found 21/2£673

Sat 15/322:55IAD - BHD

1 stop11h 20mBritish Airways

Sat 22/306:40BHD - IAD

2 stops17h 35mBritish Airways

Deal found 20/2£677

Wed 9/410:59BWI - BHD

2 stops19h 56mAmerican Airlines

Thu 17/413:15BHD - BWI

1 stop11h 20mAmerican Airlines

Deal found 19/2£684

Wed 9/414:20DCA - BHD

2 stops21h 35mDelta

Thu 17/406:30BHD - DCA

2 stops21h 40mDelta

Deal found 19/2£692

Last-minute flights from Washington, D.C. to Belfast
Discover last-minute flight deals from Washington, D.C. to Belfast. Data last updated 21 February 2025 and is based on user searches.

Mon 10/318:35IAD - BHD

1 stop18h 15mMultiple Airlines

Sat 15/306:30BHD - IAD

1 stop14h 15mMultiple Airlines

Deal found 21/2£798

Mon 10/319:59IAD - BHD

2 stops16h 51mKLM

Sat 15/306:30BHD - IAD

1 stop14h 15mKLM

Deal found 21/2£801

Mon 10/321:45IAD - BHD

2 stops15h 35mAer Lingus

Sat 15/317:20BHD - IAD

2 stops30h 55mAer Lingus

Deal found 21/2£814

Sat 15/322:55IAD - BHD

1 stop11h 20mBritish Airways

Sat 22/306:40BHD - IAD

2 stops17h 35mBritish Airways

Deal found 20/2£677

One-way flights from Washington, D.C. to Belfast
Search for one-way flight options from Washington, D.C. to Belfast. Find affordable one-way fares based on user searches. Data last updated 21 February 2025.

Tue 17/618:50BWI - BHD

2 stops33h 00mMultiple Airlines

Deal found 20/2£339

Tue 17/611:35IAD - BHD

2 stops25h 05mMultiple Airlines

Deal found 20/2£421

Tue 17/620:30IAD - BFS

2 stops21h 40mMultiple Airlines

Deal found 20/2£480

Tue 17/610:00DCA - BHD

3 stops24h 20mMultiple Airlines

Deal found 20/2£488

Tue 17/622:40IAD - BHD

1 stop11h 40mBritish Airways

Deal found 20/2£574

Tue 17/621:20BWI - BHD

1 stop13h 00mBritish Airways

Deal found 20/2£574

Tue 17/618:13DCA - BHD

2 stops16h 07mBritish Airways

Deal found 20/2£587

Thu 8/517:20IAD - BHD

2 stops14h 20mAer Lingus

Deal found 20/2£2,244

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

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Sun 13/4

06:35-09:05

2 stops21h 30m

Belfast City

Sat 19/4

19:30-16:19

2 stops25h 49m

£547

BaltimoreBelfast

BWI - BFS

BWIBFS

Baltimore/Washington

Sun 6/4

18:50-22:20

2 stops22h 30m

Belfast Intl

Sun 13/4

23:30-17:40

3 stops23h 10m

£580

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Sat 12/4

14:55-10:10

2 stops14h 15m

Belfast City

Sat 19/4

07:05-18:44

2 stops16h 39m

£594

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Wed 9/4

10:59-21:15

2 stops29h 16m

Belfast City

Mon 21/4

17:25-09:48

2 stops45h 23m

£638

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sun 6/4

20:30-21:30

2 stops20h 00m

Belfast Intl

Sun 13/4

23:30-19:20

3 stops24h 50m

£673

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sat 15/3

22:55-14:15

1 stop11h 20m

Belfast City

Sat 22/3

06:40-20:15

2 stops17h 35m

£677

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Wed 9/4

10:59-11:55

2 stops19h 56m

Belfast City

Thu 17/4

13:15-19:35

1 stop11h 20m

£684

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Wed 9/4

14:20-16:55

2 stops21h 35m

Belfast City

Thu 17/4

06:30-23:10

2 stops21h 40m

£692

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Fri 11/4

20:25-15:30

2 stops14h 05m

Belfast City

Sun 27/4

06:50-15:50

2 stops14h 00m

£711

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 9/4

13:35-21:15

2 stops26h 40m

Belfast City

Mon 21/4

17:25-16:34

2 stops28h 09m

£718

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Showing 1-10 of 30 results

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.

Travel insights for flights from Washington, D.C. to Belfast

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

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.

Rainfall in Belfast 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

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

To help decide which airline to fly from Washington, D.C. to Belfast, see what other customers have to say about Delta, KLM and Virgin Atlantic. 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

8,213 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

8,213 reviews

Delta

8.0

Very Good

8,213 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

1,331 reviews

Delta

8.0

Very Good

8,213 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.

Virgin Atlantic

7.5

Good

654 reviews

Delta

8.0

Very Good

8,213 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

8,213 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

1,070 reviews

Delta

8.0

Very Good

8,213 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 flying from Washington, D.C. to Belfast round-trip?
British Airways, at £547, was found to be the cheapest airline from Washington, D.C. to Belfast.Alternate airlines flying return to your destination include American Airlines and Delta. You may be able to fly from Washington, D.C. to Belfast for 5% 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

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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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Cheap flights from Washington, D.C. to Belfast from £339

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 17/6. 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 Belfast

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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

Cheapest flights from Washington, D.C. to BelfastExplore 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 21 February 2025.

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 21 February 2025.

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

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.

Travel insights for flights from Washington, D.C. to Belfast

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

What is the cheapest month to book a 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.

Temperature in Belfast by month

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

Reviews of airlines servicing Belfast

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?

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

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

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

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

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

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.

Complete your trip

Complete your trip to Belfast by adding a car hire and/or hotel booking to your travel itinerary.

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?

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

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

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

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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 21 February 2025.