In terms of precipitation, rainfall in Washington, D.C. Reagan-National Airport ranges from 66.0 - 102.0 inches per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. Reagan-National Airport when rainfall is around 66.0 mm.

If weather is an important factor for your trip to Washington, D.C. Reagan-National Airport, 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 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

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

When flying from Northern Ireland to Washington, D.C. Reagan-National Airport, 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 Northern Ireland to Reagan-National that include hotel bookings?

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

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

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

Can I find deals for business class flights from Northern Ireland to Reagan-National?

Yes. Cheapflights offers flight deals from Northern Ireland to Reagan-National by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£525+ Cheap Flights from Northern Ireland to Washington, D.C. Reagan-National Airport

Cheap flight deals from Northern Ireland to Reagan-National

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Cheapest flights from Northern Ireland to Reagan-National
Explore the most affordable flight options available from Northern Ireland to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2026.

Tue 10/1110:00 -

2 stops14h 23m

Tue 17/1114:56 -

2 stops14h 54m

Deal found 16/9£579

Fri 9/1009:35 -

2 stops17h 24m

Mon 12/1016:55 -

2 stops15h 00m

Deal found 16/9£645

Fri 9/1006:05 -

3 stops35h 04m

Mon 12/1006:00 -

3 stops29h 15m

Deal found 16/9£877

Fri 9/1007:00 -

3 stops34h 09m

Mon 12/1006:00 -

3 stops24h 55m

Deal found 16/9£945

Find flight deals from Northern Ireland to Reagan-National

Round-trip from	£579
One-way from	£525

British Airways
10/11-17/11
4 total stops
29h 17m total
Northern Ireland to Washington, D.C.

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2/10-31/12
2 total stops
20h 29m total
Northern Ireland to Washington, D.C.

Search Deals

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

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Route

Depart

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Price

Cheapest return flight

BelfastWashington, D.C.

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

BFSDCA

Belfast Intl

Fri 2/10

07:05-22:34

2 stops20h 29m

Washington, D.C. Reagan-National

Wed 31/12

00:00-06:00

Nonstop0h 00m

£525

BelfastWashington, D.C.

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

BHDDCA

Belfast City

Fri 2/10

11:05-22:34

2 stops16h 29m

Washington, D.C. Reagan-National

Wed 31/12

00:00-06:00

Nonstop0h 00m

£566

BelfastWashington, D.C.

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

BHDDCA

Belfast City

Tue 10/11

10:00-19:23

2 stops14h 23m

Washington, D.C. Reagan-National

Tue 17/11

14:56-10:50

2 stops14h 54m

£579

BelfastWashington, D.C.

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

BHDDCA

Belfast City

Thu 14/1

06:30-18:25

2 stops16h 55m

Washington, D.C. Reagan-National

Sun 17/1

17:10-13:50

2 stops15h 40m

£613

BelfastWashington, D.C.

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

BFSDCA

Belfast Intl

Thu 8/10

06:10-19:59

2 stops18h 49m

Washington, D.C. Reagan-National

Wed 31/12

00:00-06:00

Nonstop0h 00m

£692

BelfastWashington, D.C.

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

BHDDCA

Belfast City

Thu 8/10

07:00-19:59

2 stops17h 59m

Washington, D.C. Reagan-National

Wed 31/12

00:00-06:00

Nonstop0h 00m

£717

BelfastWashington, D.C.

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

BFSDCA

Belfast Intl

Fri 9/10

06:05-12:09

3 stops35h 04m

Washington, D.C. Reagan-National

Mon 12/10

06:00-16:15

3 stops29h 15m

£877

Fastest return journey

BelfastWashington, D.C.

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

BHDDCA

Belfast City

Mon 5/10

09:40-19:05

2 stops14h 25m

Washington, D.C. Reagan-National

Wed 31/12

00:00-06:00

Nonstop0h 00m

£986

BelfastWashington, D.C.

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

BHDDCA

Belfast City

Fri 9/10

07:00-12:09

3 stops34h 09m

Washington, D.C. Reagan-National

Mon 12/10

11:00-11:55

2 stops19h 55m

£1,057

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Sorted by cheapest first

Best time to book a flight from Northern Ireland to Reagan-National

Have a flexible travel schedule? Discover the best time to fly to Reagan-National from Northern Ireland with our price prediction graph.

BHD-DCA

BFS-DCA

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.

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Everything you need to know about your flight from Northern Ireland to Washington, D.C. Reagan-National Airport

GBNIR-DCA

BHD-DCA

BFS-DCA

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

Related info for your journey

How long is the flight from Northern Ireland to Washington, D.C. Reagan-National Airport?
Airlines like British Airways fly from Northern Ireland to Washington, D.C. Reagan-National Airport in about 14h 23m. The time it takes to get you to your destination can typically vary by up to . The distance between Northern Ireland and Washington, D.C. Reagan-National Airport is about 3378 mi.
Can I find deals for flights from Northern Ireland to Reagan-National that include hotel bookings?
Yes. In addition to deals on Northern Ireland to Reagan-National flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Northern Ireland to Reagan-National?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Northern Ireland to Reagan-National.
Can I find deals for business class flights from Northern Ireland to Reagan-National?
Yes. Cheapflights offers flight deals from Northern Ireland to Reagan-National 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 Northern Ireland to Reagan-National. 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 Northern Ireland to Reagan-National?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Northern Ireland to Reagan-National.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Northern Ireland to Reagan-National, users can toggle the no change fees filter when performing a flight search.

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Cheap flights from Northern Ireland to Washington, D.C. Reagan-National Airport from £525

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Northern Ireland to Reagan-National

Cheapest flights from Northern Ireland to Reagan-NationalExplore the most affordable flight options available from Northern Ireland to Reagan-National. 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 Northern Ireland to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2026.

Best flights from Northern Ireland to Reagan-NationalDiscover carefully curated flight deals from Northern Ireland to Reagan-National 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 Northern Ireland to Reagan-National 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 Northern Ireland to Reagan-NationalDiscover last-minute flight deals from Northern Ireland to Reagan-National. Data last updated 18 September 2026 and is based on user searches.

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

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

Search for one-way flight options from Northern Ireland to Reagan-National. 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 Northern Ireland to Washington, D.C. Reagan-National Airport that are best for you.

Best time to book a flight from Northern Ireland to Reagan-National

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Related info for your journey

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

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

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

Can I find deals for business class flights from Northern Ireland to Reagan-National?

Travelling to a place near Washington, D.C. Reagan-National Airport?

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Alternative routes for Northern Ireland to Reagan-National

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

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

Direct flights to District of Columbia

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Search flights from Northern Ireland to Reagan-National by cabin class

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

Northern Ireland and Reagan-National flights

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

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Other flights to Reagan-National

Explore flights to Reagan-National departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 18 September 2026.

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

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Cheapest flights from Northern Ireland to Reagan-National
Explore the most affordable flight options available from Northern Ireland to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2026.

Best flights from Northern Ireland to Reagan-National
Discover carefully curated flight deals from Northern Ireland to Reagan-National 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 Northern Ireland to Reagan-National
Discover last-minute flight deals from Northern Ireland to Reagan-National. Data last updated 18 September 2026 and is based on user searches.

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