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 June is currently the most expensive (average of $337). 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.

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.

$841+ 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	$841 (Mytrip)

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 junio 12, 2025.

jue. 7/36:00 amBFS - DCA

3 stops35h 03mMultiple Airlines

mié. 7/96:00 amDCA - BFS

3 stops31h 35mMultiple Airlines

Deal found 6/11

$841

mar. 11/46:30 amBHD - DCA

2 stops20h 49mDelta

dom. 12/285:25 pmDCA - BHD

2 stops18h 25mDelta

Deal found 6/12

$2,594

mar. 11/46:30 amBHD - DCA

2 stops15h 02mKLM

sáb. 12/276:50 pmDCA - BHD

2 stops17h 00mKLM

Deal found 6/12

$6,851

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 junio 12, 2025.

jue. 7/36:00 amBFS - DCA

3 stops35h 03mMultiple Airlines

mié. 7/96:00 amDCA - BFS

3 stops31h 35mMultiple Airlines

Deal found 6/11

$841

mar. 11/46:30 amBHD - DCA

2 stops20h 49mDelta

dom. 12/285:25 pmDCA - BHD

2 stops18h 25mDelta

Deal found 6/12

$2,594

mar. 11/46:30 amBHD - DCA

2 stops15h 02mKLM

sáb. 12/276:50 pmDCA - BHD

2 stops17h 00mKLM

Deal found 6/12

$6,851

Last-minute flights from Northern Ireland to Reagan-National
Discover last-minute flight deals from Northern Ireland to Reagan-National. Data last updated junio 12, 2025 and is based on user searches.

jue. 7/36:00 amBFS - DCA

3 stops35h 03mMultiple Airlines

mié. 7/96:00 amDCA - BFS

3 stops31h 35mMultiple Airlines

Deal found 6/11

$841

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 junio 12, 2025.

lun. 6/306:30 amBHD - DCA

2 stops15h 02mKLM

Deal found 6/11

$1,766

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.

BFS - DCA

BFSDCA

Belfast Intl

jue. 7/3

6:00 am-12:03 pm

3 stops35h 03m

Washington, D.C. Reagan-National

mié. 7/9

6:00 am-6:35 pm

3 stops31h 35m

$841

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

mar. 11/4

6:30 am-10:19 pm

2 stops20h 49m

Washington, D.C. Reagan-National

dom. 12/28

5:25 pm-4:50 pm

2 stops18h 25m

$2,594

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

mar. 11/4

6:30 am-4:32 pm

2 stops15h 02m

Washington, D.C. Reagan-National

sáb. 12/27

6:50 pm-4:50 pm

2 stops17h 00m

$6,851

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

lun. 6/30

6:30 am-4:32 pm

2 stops15h 02m

$1,766

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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

Rainfall in Reagan-National by month

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.

Temperature in Reagan-National by month

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).

Reviews of airlines servicing Reagan-National

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,950 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

KLM

7.8

Good

1,358 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 June is currently the most expensive (average of $337). 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

Arlington

Alexandria

Woodbridge

Tysons

Silver Spring

Linthicum Heights

Fredericksburg

Gaithersburg

Fairfax

Falls Church

Easton

Herndon

Towson

Bowie

Rockville

Reston

National Harbor

Springfield

Manassas

Dundalk

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$841+ Cheap flights from Northern Ireland to Reagan-National (DCA)

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 7/3. 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 junio 12, 2025.

Round-trip 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 junio 12, 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 junio 12, 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

Rainfall in Reagan-National by month

Plan your trip to Reagan-National by taking into account the average rainfall totals by month.

Temperature in Reagan-National by month

Plan your trip to Reagan-National by taking into account the average temperature totals by month.

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 Northern Ireland?

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Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Northern Ireland to Reagan-National

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

100% Free

Book with Flexibility

Travel Smart

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 junio 12, 2025.