In terms of precipitation, rainfall in District of Columbia 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 District of Columbia when rainfall is around 66.0 mm.

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 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 BFS to DC?

When flying from Belfast Intl Airport to District of Columbia, 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 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 holiday 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.

£320+ Cheap Flights from Belfast Intl Airport to District of Columbia

Cheap flight deals from Belfast Intl to District of Columbia

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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 11 September 2026.

Sat 24/1021:15 -

2 stops27h 15m

Sat 31/1020:40 -

3 stops19h 35m

Deal found 9/9£717

Find flight deals from Belfast Intl to District of Columbia

Round-trip from	£717
One-way from	£320

24/10-31/10
5 total stops
46h 50m total
Belfast to District of Columbia

Search Deals

9/12-31/12
2 total stops
27h 20m total
Belfast to District of Columbia

Search Deals

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BelfastWashington, D.C.

BFS Belfast Intl - IAD Washington, D.C. Dulles Intl

BFSIAD

Belfast Intl

Wed 9/12

18:00-16:20

2 stops27h 20m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£320

BelfastWashington, D.C.

BFS Belfast Intl - IAD Washington, D.C. Dulles Intl

BFSIAD

Belfast Intl

Sat 24/10

21:15-19:30

2 stops27h 15m

Washington, D.C. Dulles Intl

Sat 31/10

20:40-20:15

3 stops19h 35m

£717

Flights are sorted by cheapest return flights first.

Deals found on 9/9

Sorted by cheapest first

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.

BFS-IAD

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 Belfast Intl Airport to District of Columbia

BFS-USDC

BFS-IAD

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

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 holiday 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.

Browse thousands of different options on Cheapflights for your next trip

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Cheap flights from Belfast Intl Airport to District of Columbia from £320

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/12. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap 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 11 September 2026.

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 11 September 2026.

Best flights from Belfast Intl to District of ColumbiaDiscover carefully curated flight deals from Belfast Intl to District of Columbia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 11 September 2026.

Discover carefully curated flight deals from Belfast Intl to District of Columbia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 11 September 2026.

Last-minute flights from Belfast Intl to District of ColumbiaDiscover last-minute flight deals from Belfast Intl to District of Columbia. Data last updated 11 September 2026 and is based on user searches.

Discover last-minute flight deals from Belfast Intl to District of Columbia. Data last updated 11 September 2026 and is based on user searches.

One-way flights from Belfast Intl to District of ColumbiaSearch for one-way flight options from Belfast Intl to District of Columbia. Find affordable one-way fares based on user searches. Data last updated 11 September 2026.

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 11 September 2026.

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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

Related info for your journey

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?

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

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

Complete your trip

Complete your trip to District of Columbia by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to United States

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Belfast Intl and District of Columbia flights

Browse other Belfast Intl and District of Columbia flight options. Last updated on 11 September 2026.

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