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.

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).

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

When flying from Washington, D.C. Reagan-National Airport to Belfast, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 holiday 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.

£257+ Cheap Flights from Washington, D.C. Reagan-National Airport to Belfast

Cheap flight deals from Reagan-National to Belfast

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 18 September 2026.

Wed 28/1016:00 -

3 stops20h 15m

Tue 3/1120:55 -

3 stops23h 29m

Deal found 14/9£649

Wed 28/1016:00 -

3 stops19h 30m

Tue 3/1118:20 -

3 stops26h 04m

Deal found 14/9£668

Wed 28/1019:22 -

2 stops17h 23m

Tue 3/1109:40 -

2 stops18h 27m

Deal found 14/9£671

Fri 13/1112:55 -

3 stops26h 45m

Mon 16/1107:20 -

2 stops15h 58m

Deal found 13/9£681

Sun 22/1109:40 -

2 stops18h 30m

Tue 8/1209:40 -

2 stops18h 50m

Deal found 15/9£693

Mon 23/1111:05 -

2 stops17h 05m

Mon 7/1209:40 -

2 stops18h 50m

Deal found 15/9£708

Mon 23/1112:29 -

2 stops15h 41m

Sun 6/1209:40 -

2 stops19h 03m

Deal found 15/9£709

Thu 31/1216:35 -

2 stops19h 15m

Wed 6/117:20 -

2 stops30h 54m

Deal found 14/9£731

Mon 12/1011:00 -

3 stops26h 00m

Mon 19/1018:10 -

3 stops29h 05m

Deal found 14/9£744

Fri 13/1116:00 -

3 stops16h 55m

Mon 16/1108:00 -

2 stops15h 18m

Deal found 13/9£762

Thu 8/1006:00 -

2 stops20h 45m

Tue 13/1006:30 -

2 stops19h 29m

Deal found 12/9£786

Sat 3/1016:59 -

2 stops14h 26m

Tue 13/1009:40 -

2 stops16h 19m

Deal found 12/9£794

Best flights from Reagan-National to Belfast
Discover carefully curated flight deals from Reagan-National to Belfast that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 September 2026.

Wed 28/1016:00 -

3 stops20h 15m

Tue 3/1120:55 -

3 stops23h 29m

Deal found 14/9£649

Wed 25/1109:40 -

2 stops18h 30m

Wed 9/1209:40 -

2 stops15h 59m

Deal found 15/9£671

Thu 11/314:52 -

2 stops15h 03m

Sun 21/315:15 -

2 stops22h 45m

Deal found 14/9£770

Wed 30/1214:06 -

2 stops14h 04m

Tue 5/109:40 -

2 stops18h 24m

Deal found 13/9£830

Tue 24/1109:00 -

2 stops19h 10m

Wed 9/1209:40 -

2 stops15h 59m

Deal found 15/9£671

Fri 13/1112:55 -

3 stops26h 45m

Mon 16/1107:20 -

2 stops15h 58m

Deal found 13/9£681

Wed 30/1212:30 -

2 stops15h 40m

Wed 6/109:40 -

2 stops37h 25m

Deal found 14/9£693

Thu 8/1006:00 -

2 stops20h 45m

Tue 13/1006:30 -

2 stops19h 29m

Deal found 12/9£786

Tue 29/1212:30 -

2 stops15h 40m

Wed 6/117:20 -

2 stops31h 53m

Deal found 14/9£693

Thu 8/1012:50 -

3 stops24h 50m

Tue 13/1010:20 -

3 stops41h 14m

Deal found 12/9£840

Thu 8/1006:08 -

2 stops22h 12m

Tue 13/1009:50 -

2 stops18h 47m

Deal found 12/9£708

Wed 25/1117:15 -

2 stops18h 30m

Sat 5/1209:40 -

2 stops18h 25m

Deal found 15/9£708

Mon 23/1106:00 -

2 stops24h 30m

Sun 29/1109:25 -

2 stops17h 34m

Deal found 16/9£858

Wed 30/1218:55 -

2 stops16h 55m

Tue 5/109:40 -

2 stops18h 13m

Deal found 16/9£829

Sun 27/1209:40 -

3 stops31h 15m

Sun 3/117:05 -

3 stops30h 13m

Deal found 15/9£1,060

Find flight deals from Reagan-National to Belfast

Round-trip from	£649
One-way from	£257

28/10-3/11
6 total stops
43h 44m total
Washington, D.C. to Belfast

Search Deals

11/10-31/12
2 total stops
15h 00m total
Washington, D.C. to Belfast

Search Deals

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

Cheapest return flight

Washington, D.C.Belfast

DCA Washington, D.C. Reagan-National - BHD Belfast City

DCABHD

Washington, D.C. Reagan-National

Sun 11/10

12:50-14:55

3 stops21h 05m

Belfast City

Wed 31/12

00:00-18:00

Nonstop0h 00m

£262

Washington, D.C.Belfast

DCA Washington, D.C. Reagan-National - BFS Belfast Intl

DCABFS

Washington, D.C. Reagan-National

Mon 26/10

07:00-19:10

3 stops32h 10m

Belfast Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£327

Fastest return journey

Washington, D.C.Belfast

DCA Washington, D.C. Reagan-National - BHD Belfast City

DCABHD

Washington, D.C. Reagan-National

Mon 12/10

13:20-09:20

2 stops15h 00m

Belfast City

Wed 31/12

00:00-18:00

Nonstop0h 00m

£387

Washington, D.C.Belfast

DCA Washington, D.C. Reagan-National - BFS Belfast Intl

DCABFS

Washington, D.C. Reagan-National

Wed 28/10

16:00-16:15

3 stops20h 15m

Belfast Intl

Tue 3/11

20:55-15:24

3 stops23h 29m

£649

Washington, D.C.Belfast

DCA Washington, D.C. Reagan-National - BHD Belfast City

DCABHD

Washington, D.C. Reagan-National

Wed 25/11

09:40-09:10

2 stops18h 30m

Belfast City

Wed 9/12

09:40-20:39

2 stops15h 59m

£671

Washington, D.C.Belfast

DCA Washington, D.C. Reagan-National - BHD Belfast City

DCABHD

Washington, D.C. Reagan-National

Tue 24/11

09:00-09:10

2 stops19h 10m

Belfast City

Wed 9/12

09:40-20:39

2 stops15h 59m

£671

Washington, D.C.Belfast

DCA Washington, D.C. Reagan-National - BFS Belfast Intl

DCABFS

Washington, D.C. Reagan-National

Fri 13/11

12:55-20:40

3 stops26h 45m

Belfast Intl

Mon 16/11

07:20-18:18

2 stops15h 58m

£681

Washington, D.C.Belfast

DCA Washington, D.C. Reagan-National - BHD Belfast City

DCABHD

Washington, D.C. Reagan-National

Wed 30/12

12:30-09:10

2 stops15h 40m

Belfast City

Wed 6/1

09:40-18:05

2 stops37h 25m

£693

Washington, D.C.Belfast

DCA Washington, D.C. Reagan-National - BHD Belfast City

DCABHD

Washington, D.C. Reagan-National

Tue 29/12

12:30-09:10

2 stops15h 40m

Belfast City

Wed 6/1

17:20-20:13

2 stops31h 53m

£693

Washington, D.C.Belfast

DCA Washington, D.C. Reagan-National - BHD Belfast City

DCABHD

Washington, D.C. Reagan-National

Thu 8/10

06:08-09:20

2 stops22h 12m

Belfast City

Tue 13/10

09:50-23:37

2 stops18h 47m

£708

Flights are sorted by cheapest return flights first.

Deals found on 17/9

Showing 1-10 of 19 resultsSorted by cheapest first

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.

DCA-BF1

DCA-BFS

DCA-BHD

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. Reagan-National Airport to Belfast

DCA-BF1

DCA-BFS

DCA-BHD

No data available for this route at this time. Please check back soon.

Related info for your journey

How long is the flight from Washington, D.C. Reagan-National Airport to Belfast?
Airlines like Delta fly from Washington, D.C. Reagan-National Airport to Belfast in about 18h 30m. The time it takes to get you to your destination can typically vary by up to . The distance from Washington, D.C. Reagan-National Airport to Belfast is about 3378 mi.
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 holiday 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.

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Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Reagan-National to Belfast. 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 Reagan-National to Belfast?

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Can Cheapflights find flights from Reagan-National to Belfast with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Reagan-National to Belfast flexibly with Cheapflights today.

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Cheap flights from Washington, D.C. Reagan-National Airport to Belfast from £257

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Reagan-National to Belfast

Cheapest flights from Reagan-National to BelfastExplore 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 18 September 2026.

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 18 September 2026.

Best flights from Reagan-National to BelfastDiscover carefully curated flight deals from Reagan-National to Belfast that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 September 2026.

Discover carefully curated flight deals from Reagan-National to Belfast that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 September 2026.

Last-minute flights from Reagan-National to BelfastDiscover last-minute flight deals from Reagan-National to Belfast. Data last updated 18 September 2026 and is based on user searches.

Discover last-minute flight deals from Reagan-National to Belfast. Data last updated 18 September 2026 and is based on user searches.

One-way flights from Reagan-National to BelfastSearch for one-way flight options from Reagan-National to Belfast. Find affordable one-way fares based on user searches. Data last updated 18 September 2026.

Search for one-way flight options from Reagan-National to Belfast. Find affordable one-way fares based on user searches. Data last updated 18 September 2026.

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Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Belfast that are best for you.

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.

Cheapflights Insights

Related info for your journey

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

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

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

Can I find deals for business class flights from Reagan-National 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.

Direct flights to Northern Ireland

Book a non-stop flight to one of these other cities located in Northern Ireland.

Search flights from Reagan-National to Belfast by cabin class

Find flights from Reagan-National to Belfast, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Reagan-National and Belfast flights

Browse other Reagan-National and Belfast flight options. Last updated on 18 September 2026.

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How does Cheapflights help users find flights from Reagan-National to Belfast?

Why should you use Cheapflights to find cheap flight tickets from Reagan-National to Belfast?

Can Cheapflights find flights from Reagan-National to Belfast with no change fees?

Can Cheapflights notify me if prices for flights from Reagan-National to Belfast become cheaper?

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Travel Smart

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 18 September 2026.

Best flights from Reagan-National to Belfast
Discover carefully curated flight deals from Reagan-National to Belfast that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 September 2026.

Last-minute flights from Reagan-National to Belfast
Discover last-minute flight deals from Reagan-National to Belfast. Data last updated 18 September 2026 and is based on user searches.

One-way flights from Reagan-National to Belfast
Search for one-way flight options from Reagan-National to Belfast. Find affordable one-way fares based on user searches. Data last updated 18 September 2026.