What is the cheapest month to book a flight from Belfast Intl Airport to District of Columbia?

Currently, August is the cheapest month in which you can book a flight from Belfast Intl Airport to District of Columbia (average of $292). Flying from Belfast Intl Airport to District of Columbia in April 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.

In terms of precipitation, rainfall in District of Columbia 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 District of Columbia when rainfall is around 2.6 in.

If weather is an important factor for your trip to District of Columbia, 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 BFS to DC?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Belfast Intl Airport to District of Columbia as you normally would.

Can I find deals for flights from Belfast Intl to District of Columbia that include hotel bookings?

Yes. In addition to deals on Belfast Intl to District of Columbia flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Belfast Intl to District of Columbia?

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

Can I find deals for business class flights from Belfast Intl to District of Columbia?

Yes. Cheapflights offers flight deals from Belfast Intl to District of Columbia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$388+ Cheap Flights from Belfast Intl Airport to District of Columbia

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Cheap flight deals from Belfast Intl to District of Columbia

Round-trip from	$788 (Mytrip)
One-way from	$388 (Kiwi.com)

From Belfast Intl to District of Columbia

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One-way flight from Belfast Intl to District of Columbia

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Find flight deals from Belfast Intl to District of Columbia

Cheapest flights from Belfast Intl to District of Columbia
Explore the most affordable flight options available from Belfast Intl to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on setembro 17, 2025.

qui 10/304:15 pmBFS - IAD

3 stops33h 45mMultiple Airlines

qui 11/65:30 pmIAD - BFS

2 stops23h 50mMultiple Airlines

Deal found 9/14

$788

sex 10/106:05 amBFS - IAD

2 stops21h 05mMultiple Airlines

dom 10/128:30 pmIAD - BFS

2 stops18h 50mMultiple Airlines

Deal found 9/15

$793

Best flights from Belfast Intl to District of Columbia
Discover carefully curated flight deals from Belfast Intl to District of Columbia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated setembro 17, 2025.

sex 10/106:05 amBFS - IAD

2 stops21h 05mMultiple Airlines

dom 10/128:30 pmIAD - BFS

2 stops18h 50mMultiple Airlines

Deal found 9/15

$793

qui 10/306:30 amBFS - IAD

2 stops17h 00mMultiple Airlines

qui 11/67:40 pmIAD - BFS

2 stops21h 40mMultiple Airlines

Deal found 9/14

$840

Last-minute flights from Belfast Intl to District of Columbia
Discover last-minute flight deals from Belfast Intl to District of Columbia. Data last updated setembro 17, 2025 and is based on user searches.

sex 10/106:05 amBFS - IAD

2 stops21h 05mMultiple Airlines

dom 10/128:30 pmIAD - BFS

2 stops18h 50mMultiple Airlines

Deal found 9/15

$793

qui 10/304:15 pmBFS - IAD

3 stops33h 45mMultiple Airlines

qui 11/65:30 pmIAD - BFS

2 stops23h 50mMultiple Airlines

Deal found 9/14

$788

One-way flights from Belfast Intl to District of Columbia
Search for one-way flight options from Belfast Intl to District of Columbia. Find affordable one-way fares based on user searches. Data last updated setembro 17, 2025.

ter 10/149:25 pmBFS - IAD

3 stops46h 55mMultiple Airlines

Deal found 9/14

$388

ter 10/148:15 amBFS - DCA

3 stops32h 49mMultiple Airlines

Deal found 9/14

$554

Cheapflights Fare Finder

Use the filters below to find and compare flights from Belfast Intl Airport to District of Columbia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

sex 10/10

6:05 am-10:10 pm

2 stops21h 05m

Washington, D.C. Dulles Intl

dom 10/12

8:30 pm-8:20 pm

2 stops18h 50m

$793

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

qui 10/30

6:30 am-7:30 pm

2 stops17h 00m

Washington, D.C. Dulles Intl

qui 11/6

7:40 pm-10:20 pm

2 stops21h 40m

$840

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

ter 10/14

9:25 pm-3:20 pm

3 stops46h 55m

$388

BelfastWashington, D.C.

BFS - DCA

BFSDCA

Belfast Intl

ter 10/14

8:15 am-12:04 pm

3 stops32h 49m

$554

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Best time to book a flight from Belfast Intl to District of Columbia

Have a flexible travel schedule? Discover the best time to fly to District of Columbia from Belfast Intl 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.

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Everything you need to know about your flight from Belfast Intl Airport to District of Columbia

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Related info for your journey

Can I find deals for flights from Belfast Intl to District of Columbia that include hotel bookings?
Yes. In addition to deals on Belfast Intl to District of Columbia flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Belfast Intl to District of Columbia?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Belfast Intl to District of Columbia.
Can I find deals for business class flights from Belfast Intl to District of Columbia?
Yes. Cheapflights offers flight deals from Belfast Intl to District of Columbia 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 Belfast Intl Airport to District of Columbia?
Currently, August is the cheapest month in which you can book a flight from Belfast Intl Airport to District of Columbia (average of $292). Flying from Belfast Intl Airport to District of Columbia in April 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.

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$388+ Cheap flights from Belfast Intl (BFS) to District of Columbia

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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Belfast Intl to District of Columbia with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Belfast Intl to District of Columbia

Keep the following information in mind while searching for Belfast Intl to District of Columbia flight deals. Data was last updated setembro 17, 2025.

Round-trip from

One-way from

Find flight deals from Belfast Intl to District of Columbia

Cheapest flights from Belfast Intl to District of ColumbiaExplore the most affordable flight options available from Belfast Intl to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on setembro 17, 2025.

Explore the most affordable flight options available from Belfast Intl to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on setembro 17, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Belfast Intl Airport to District of Columbia that are best for you.

Best time to book a flight from Belfast Intl to District of Columbia

Have a flexible travel schedule? Discover the best time to fly to District of Columbia from Belfast Intl with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Belfast Intl Airport to District of Columbia

Related info for your journey

Find useful and relevant information for your journey from Belfast Intl to District of Columbia. 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 Belfast Intl to District of Columbia that include hotel bookings?

How can I find direct flights from Belfast Intl to District of Columbia?

Can I find deals for business class flights from Belfast Intl to District of Columbia?

What is the cheapest month to book a flight from Belfast Intl Airport to District of Columbia?

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.

Alternative routes for Belfast Intl to District of Columbia

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Book with Flexibility

Travel Smart

Cheapest flights from Belfast Intl to District of Columbia
Explore the most affordable flight options available from Belfast Intl to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on setembro 17, 2025.