What is the cheapest month to book a flight from Northern Ireland to Washington, D.C. Reagan-National Airport?

Currently, February is the cheapest month in which you can book a flight from Northern Ireland to Washington, D.C. Reagan-National Airport (average of $278). Flying from Northern Ireland to Washington, D.C. Reagan-National Airport in March is currently the most expensive (average of $335). 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.

In terms of precipitation, rainfall in Washington, D.C. Reagan-National Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Reagan-National Airport when rainfall is around 2.6 in.

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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Northern Ireland to Washington, D.C. Reagan-National Airport as you normally would.

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 vacation 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.

$576+ Flights from Northern Ireland to Washington, D.C. Reagan-National Airport

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Cheap flight deals from Northern Ireland to Reagan-National

Round-trip from	$787 (American Airlines)
One-way from	$576 (Mytrip)

From Northern Ireland to Washington, D.C. Reagan-National

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One-way flight from Northern Ireland to Washington, D.C. Reagan-National

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Find flight deals from Northern Ireland to Reagan-National

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 July 31, 2025.

Thu 12/46:35 amBHD - DCA

2 stops15h 14mAmerican Airlines

Mon 12/83:59 pmDCA - BHD

2 stops13h 41mAmerican Airlines

Deal found 7/30

$787

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 layovers in mind to ensure you get the best travel experience. Data last updated July 31, 2025.

Thu 12/46:35 amBHD - DCA

2 stops15h 14mAmerican Airlines

Mon 12/83:59 pmDCA - BHD

2 stops13h 41mAmerican Airlines

Deal found 7/30

$787

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 July 31, 2025.

Mon 9/87:05 amBHD - DCA

3 stops30h 54mMultiple Airlines

Deal found 7/29

$576

Mon 9/812:15 pmBHD - DCA

2 stops15h 52mBritish Airways

Deal found 7/29

$1,010

Sun 9/75:25 pmBHD - DCA

2 stops29h 45mDelta

Deal found 7/29

$1,641

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Thu 12/4

6:35 am-4:49 pm

2 stops15h 14m

Washington, D.C. Reagan-National

Mon 12/8

3:59 pm-10:40 am

2 stops13h 41m

$787

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Mon 9/8

7:05 am-8:59 am

3 stops30h 54m

$576

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Mon 9/8

12:15 pm-11:07 pm

2 stops15h 52m

$1,010

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Sun 9/7

5:25 pm-6:10 pm

2 stops29h 45m

$1,641

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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.

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 Northern Ireland to Washington, D.C. Reagan-National Airport

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

Reviews of airlines servicing Reagan-National

Peruse reviews from past customers who have flown with Delta, American Airlines, and British Airways from Northern Ireland to Washington, D.C. Reagan-National Airport to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

8.0

Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

Delta

8.0

Very good

7,980 reviews

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

8.0

Excellent

Michael,Jul 2025

AMS - ATL

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

8.0

Excellent

Michael,Jul 2025

AMS - ATL

British Airways

6.7

Okay

7,221 reviews

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

8.0

Excellent

Michael,Jul 2025

AMS - ATL

Related info for your journey

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 vacation 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.
What is the cheapest month to book a flight from Northern Ireland to Washington, D.C. Reagan-National Airport?
Currently, February is the cheapest month in which you can book a flight from Northern Ireland to Washington, D.C. Reagan-National Airport (average of $278). Flying from Northern Ireland to Washington, D.C. Reagan-National Airport in March is currently the most expensive (average of $335). 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.

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$576+ Cheap flights from Northern Ireland to Reagan-National (DCA)

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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Northern Ireland to Reagan-National with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Northern Ireland to Reagan-National

Keep the following information in mind while searching for Northern Ireland to Reagan-National flight deals. Data was last updated July 31, 2025.

Round-trip from

One-way from

Find 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 July 31, 2025.

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 July 31, 2025.

Cheapflights Fare Finder

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

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

Cheapflights Insights

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

Reviews of airlines servicing Reagan-National

Related info for your journey

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

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?

What is the cheapest month to book a flight from Northern Ireland to Washington, D.C. Reagan-National Airport?

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

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Alternative routes for 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 July 31, 2025.