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$645+ Cheap flights from Reagan-National (DCA) to Belfast

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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — BHD
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Reagan-National to Belfast

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) 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 September 15, 2025.

Round-trip from

$645
(American Airlines)

Popular in

June

Cheapest in

February

Average price

$647
From Washington, D.C. Reagan-National to Belfast
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Highest demand for flights based on searches. 20% potential increase in price ($194 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($42 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Reagan-National to Belfast

Cheapest flights from Reagan-National to Belfast
Explore the most affordable flight options available from Reagan-National to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This American Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/37:45 pmDCA - BHD
2 stops17h 30mAmerican Airlines
Fri 10/106:35 amBHD - DCA
2 stops16h 21mAmerican Airlines
Deal found 9/15$645
This FlightHub deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1312:19 pmDCA - BHD
2 stops19h 36mBritish Airways
Mon 10/206:40 amBHD - DCA
2 stops18h 36mBritish Airways
Deal found 9/15$721
This Virgin Atlantic deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/125:03 pmDCA - BHD
2 stops18h 47mVirgin Atlantic
Sun 11/166:30 amBHD - DCA
2 stops18h 23mVirgin Atlantic
Deal found 9/14$722
This Mytrip deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/299:40 amDCA - BFS
3 stops23h 55mMultiple Airlines
Wed 11/56:00 amBFS - DCA
3 stops20h 56mMultiple Airlines
Deal found 9/14$785
This American Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/83:25 pmDCA - BHD
2 stops15h 30mAmerican Airlines
Sun 10/126:50 amBHD - DCA
2 stops20h 26mAmerican Airlines
Deal found 9/12$844
This Ovago deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/174:40 pmDCA - BHD
2 stops23h 30mBritish Airways
Tue 9/231:40 pmBHD - DCA
2 stops23h 19mBritish Airways
Deal found 9/13$1,011
This FlightHub deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:30 pmDCA - BHD
2 stops32h 00mBritish Airways
Wed 12/316:35 amBHD - DCA
2 stops17h 22mBritish Airways
Deal found 9/13$1,016
This Mytrip deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2811:05 amDCA - BFS
3 stops24h 10mMultiple Airlines
Tue 11/47:15 amBFS - DCA
3 stops30h 40mMultiple Airlines
Deal found 9/13$1,635
This Expedia deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/56:45 amDCA - BHD
2 stops29h 55mMultiple Airlines
Sat 10/119:35 amBHD - DCA
2 stops18h 22mMultiple Airlines
Deal found 9/14$9,422

Cheapflights Fare Finder

 
Customize your flight search to find flights from Reagan-National 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 2,558,603 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Belfast that are best for you.

Fly from

Reagan-National

Fly to

Belfast

Route

Depart

Return

Price

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Fri 10/3

7:45 pm-6:15 pm

2 stops17h 30m

Belfast City

Fri 10/10

6:35 am-5:56 pm

2 stops16h 21m

$645

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Mon 10/13

12:19 pm-12:55 pm

2 stops19h 36m

Belfast City

Mon 10/20

6:40 am-8:16 pm

2 stops18h 36m

$721

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Wed 11/12

2:59 pm-4:50 pm

2 stops20h 51m

Belfast City

Sun 11/16

6:30 am-5:00 pm

2 stops15h 30m

$722

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Wed 11/12

4:50 pm-4:50 pm

2 stops19h 00m

Belfast City

Sun 11/16

6:30 am-7:53 pm

2 stops18h 23m

$722

Washington, D.C.Belfast

DCA - BFS

DCABFS

Washington, D.C. Reagan-National

Wed 10/29

9:40 am-1:35 pm

3 stops23h 55m

Belfast Intl

Wed 11/5

6:00 am-9:56 pm

3 stops20h 56m

$785

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Wed 10/8

3:25 pm-11:55 am

2 stops15h 30m

Belfast City

Sun 10/12

6:50 am-10:16 pm

2 stops20h 26m

$844

Washington, D.C.Belfast

DCA - BFS

DCABFS

Washington, D.C. Reagan-National

Tue 10/28

11:05 am-3:15 pm

3 stops24h 10m

Belfast Intl

Tue 11/4

7:15 am-8:55 am

3 stops30h 40m

$1,635

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Sun 10/5

6:45 am-5:40 pm

2 stops29h 55m

Belfast City

Sat 10/11

9:35 am-10:57 pm

2 stops18h 22m

$9,422

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Sat 9/20

3:35 pm-10:10 am

2 stops13h 35m

$4,475

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Sun 11/2

5:45 pm-1:15 pm

2 stops14h 30m

$4,564

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Best time to book a flight from Reagan-National to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast from Reagan-National 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 Washington, D.C. Reagan-National Airport to Belfast
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National to Belfast. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Washington, D.C. Reagan-National Airport to Belfast?

    American Airlines, British Airways, and Virgin Atlantic can get you from Washington, D.C. Reagan-National Airport to Belfast in just under 17h 30m. Your travel time can differ by up to 3h 21m. The distance between Washington, D.C. Reagan-National Airport and Belfast is about 3378 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from Reagan-National to Belfast that include hotel bookings?

    Yes. In addition to deals on Reagan-National to Belfast flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to Belfast?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to Belfast.

  • Can I find deals for business class flights from Reagan-National to Belfast?

    Yes. Cheapflights offers flight deals from Reagan-National 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. Reagan-National Airport to Belfast?

    Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Belfast (average of $657). Flying from Washington, D.C. Reagan-National Airport to Belfast in June is currently the most expensive (average of $1,189). 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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