How long is the flight from Washington, D.C. to Belfast?

Delta, KLM, and British Airways can get you from Washington, D.C. to Belfast in just under 10h 10m. Your travel time can differ by up to 7h 35m. Airlines will cover a distance of 3348 mi. Both multi-stop and direct flights can be found to your destination and back.

In terms of precipitation, rainfall in Belfast ranges from 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Belfast when rainfall is around 50.0 mm.

If weather is an important factor for your trip to Belfast, 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 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

What are the most popular routes from Washington, D.C. to Belfast?

The most popular flight routes from Washington, D.C. to Belfast are Baltimore/Washington - Belfast Intl, Baltimore/Washington - Belfast City and Washington, D.C. Dulles Intl - Belfast Intl.

What is the cheapest time of day to fly from WAS to BFS?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. to Belfast as you normally would.

Can I find deals for flights from Washington, D.C. to Belfast that include hotel bookings?

Yes. In addition to deals on Washington, D.C. to Belfast flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Washington, D.C. to Belfast?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Belfast.

Can I find deals for business class flights from Washington, D.C. to Belfast?

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

£203+ Cheap Flights from Washington, D.C. to Belfast

Cheap flight deals from Washington, D.C. to Belfast

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Washington, D.C. to Belfast
Explore the most affordable flight options available from Washington, D.C. to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2026.

Wed 28/1019:55 -

1 stop10h 10m

Tue 3/1110:00 -

1 stop12h 05m

Deal found 17/9£467

Wed 28/1022:55 -

1 stop14h 00m

Tue 3/1110:00 -

1 stop14h 55m

Deal found 15/9£478

Mon 23/1119:40 -

2 stops15h 45m

Sun 29/1122:00 -

3 stops25h 40m

Deal found 16/9£587

Thu 29/1020:40 -

2 stops18h 30m

Thu 5/1107:20 -

2 stops16h 10m

Deal found 14/9£593

Thu 29/1020:40 -

2 stops18h 30m

Thu 5/1107:20 -

2 stops16h 20m

Deal found 14/9£593

Sat 31/1020:40 -

2 stops20h 15m

Sat 7/1119:50 -

3 stops24h 55m

Deal found 16/9£604

Mon 23/1119:40 -

2 stops19h 35m

Sun 29/1119:45 -

2 stops25h 00m

Deal found 16/9£606

Wed 28/1020:40 -

2 stops21h 40m

Tue 3/1119:40 -

3 stops28h 00m

Deal found 15/9£619

Wed 28/1009:55 -

2 stops30h 25m

Tue 3/1120:55 -

2 stops25h 05m

Deal found 14/9£627

Fri 13/1119:40 -

2 stops21h 55m

Mon 16/1108:30 -

2 stops15h 10m

Deal found 13/9£633

Wed 28/1016:00 -

3 stops20h 15m

Tue 3/1120:55 -

3 stops23h 29m

Deal found 14/9£649

Sun 11/1023:20 -

2 stops16h 40m

Thu 15/1021:05 -

3 stops28h 30m

Deal found 18/9£658

Best flights from Washington, D.C. to Belfast
Discover carefully curated flight deals from Washington, D.C. to Belfast that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 September 2026.

Mon 23/1119:40 -

2 stops15h 45m

Sun 29/1122:00 -

3 stops25h 40m

Deal found 16/9£587

Mon 28/918:10 -

1 stop17h 45m

Tue 6/1009:50 -

2 stops18h 26m

Deal found 14/9£668

Mon 28/912:30 -

2 stops15h 50m

Tue 6/1009:50 -

2 stops16h 38m

Deal found 17/9£670

Wed 25/1118:55 -

1 stop10h 10m

Tue 8/1210:00 -

1 stop12h 05m

Deal found 15/9£746

Sat 31/1020:40 -

3 stops20h 45m

Sat 7/1119:50 -

3 stops24h 55m

Deal found 16/9£593

Mon 23/1112:35 -

2 stops15h 35m

Tue 8/1209:40 -

2 stops18h 43m

Deal found 15/9£671

Tue 24/1109:00 -

2 stops19h 10m

Wed 9/1209:40 -

2 stops15h 59m

Deal found 15/9£671

Wed 28/1020:40 -

2 stops21h 40m

Tue 3/1119:40 -

3 stops28h 00m

Deal found 15/9£619

Wed 25/1109:40 -

2 stops18h 30m

Wed 9/1209:40 -

2 stops15h 59m

Deal found 15/9£671

Mon 23/1119:40 -

2 stops19h 35m

Sun 29/1119:45 -

2 stops25h 00m

Deal found 16/9£621

Tue 29/1218:55 -

1 stop10h 55m

Wed 6/117:35 -

1 stop28h 30m

Deal found 14/9£752

Mon 12/1012:30 -

2 stops15h 50m

Sun 18/1017:30 -

1 stop27h 05m

Deal found 17/9£700

Wed 30/1218:55 -

1 stop10h 10m

Wed 6/115:45 -

1 stop30h 20m

Deal found 14/9£752

Tue 29/1217:45 -

1 stop18h 05m

Wed 6/117:20 -

2 stops32h 52m

Deal found 14/9£690

Fri 13/1119:40 -

2 stops21h 55m

Mon 16/1108:30 -

2 stops15h 10m

Deal found 13/9£633

Fri 13/1118:15 -

1 stop9h 55m

Mon 16/1109:40 -

1 stop11h 15m

Deal found 13/9£735

Wed 30/1212:36 -

2 stops15h 34m

Wed 6/117:20 -

2 stops32h 52m

Deal found 14/9£693

Thu 11/314:52 -

2 stops15h 03m

Sun 21/315:15 -

2 stops22h 45m

Deal found 14/9£770

Wed 28/1016:00 -

3 stops20h 15m

Tue 3/1120:55 -

3 stops23h 29m

Deal found 14/9£649

Mon 28/912:26 -

2 stops15h 54m

Tue 6/1009:50 -

1 stop10h 45m

Deal found 17/9£752

Wed 30/1212:22 -

2 stops15h 48m

Wed 6/117:20 -

2 stops31h 36m

Deal found 14/9£693

Sun 11/1023:20 -

2 stops16h 40m

Thu 15/1021:05 -

3 stops28h 30m

Deal found 18/9£658

Mon 28/921:30 -

1 stop13h 00m

Tue 6/1006:30 -

2 stops21h 40m

Deal found 17/9£824

Wed 30/1212:30 -

2 stops15h 40m

Wed 6/109:40 -

2 stops37h 25m

Deal found 14/9£693

Mon 12/1020:30 -

2 stops19h 10m

Mon 19/1021:35 -

2 stops21h 47m

Deal found 14/9£663

Wed 30/1218:20 -

1 stop9h 50m

Tue 5/109:40 -

2 stops18h 22m

Deal found 16/9£826

Tue 29/1212:30 -

2 stops15h 40m

Wed 6/117:20 -

2 stops31h 53m

Deal found 14/9£693

Tue 1/1219:40 -

2 stops20h 15m

Sat 19/1206:30 -

2 stops17h 50m

Deal found 16/9£669

Thu 31/1218:55 -

1 stop14h 10m

Wed 6/109:15 -

1 stop12h 50m

Deal found 14/9£891

Wed 25/1117:15 -

2 stops18h 30m

Sat 5/1209:40 -

2 stops18h 25m

Deal found 15/9£708

Find flight deals from Washington, D.C. to Belfast

Round-trip from	£467
One-way from	£203

British Airways
28/10-3/11
2 total stops
22h 15m total
Washington, D.C. to Belfast

Search Deals

12/10-31/12
3 total stops
30h 35m total
Washington, D.C. to Belfast

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Washington, D.C.Belfast

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

IADBFS

Washington, D.C. Dulles Intl

Mon 12/10

20:30-08:05

3 stops30h 35m

Belfast Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£203

Washington, D.C.Belfast

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

IADBFS

Washington, D.C. Dulles Intl

Sun 11/10

23:20-08:05

3 stops27h 45m

Belfast Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£212

Washington, D.C.Belfast

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

IADBFS

Washington, D.C. Dulles Intl

Mon 26/10

20:40-19:10

2 stops18h 30m

Belfast Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£214

BaltimoreBelfast

BWI Baltimore/Washington - BFS Belfast Intl

BWIBFS

Baltimore/Washington

Mon 26/10

20:40-07:15

2 stops30h 35m

Belfast Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£215

BaltimoreBelfast

BWI Baltimore/Washington - BFS Belfast Intl

BWIBFS

Baltimore/Washington

Mon 12/10

20:30-07:05

2 stops29h 35m

Belfast Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£215

BaltimoreBelfast

BWI Baltimore/Washington - BHD Belfast City

BWIBHD

Baltimore/Washington

Mon 12/10

20:30-11:10

3 stops33h 40m

Belfast City

Wed 31/12

00:00-18:00

Nonstop0h 00m

£216

Washington, D.C.Belfast

IAD Washington, D.C. Dulles Intl - BHD Belfast City

IADBHD

Washington, D.C. Dulles Intl

Sun 11/10

23:20-16:30

3 stops36h 10m

Belfast City

Wed 31/12

00:00-18:00

Nonstop0h 00m

£217

BaltimoreBelfast

BWI Baltimore/Washington - BHD Belfast City

BWIBHD

Baltimore/Washington

Thu 29/10

20:40-10:55

3 stops34h 15m

Belfast City

Wed 31/12

00:00-18:00

Nonstop0h 00m

£233

Washington, D.C.Belfast

IAD Washington, D.C. Dulles Intl - BHD Belfast City

IADBHD

Washington, D.C. Dulles Intl

Mon 26/10

20:40-21:05

2 stops20h 25m

Belfast City

Wed 31/12

00:00-18:00

Nonstop0h 00m

£241

Washington, D.C.Belfast

IAD Washington, D.C. Dulles Intl - BHD Belfast City

IADBHD

Washington, D.C. Dulles Intl

Mon 12/10

20:30-17:20

2 stops15h 50m

Belfast City

Wed 31/12

00:00-18:00

Nonstop0h 00m

£248

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from Washington, D.C. to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast from Washington, D.C. with our price prediction graph.

WAS-BF1

IAD-BFS

BWI-BFS

BWI-BHD

IAD-BHD

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 Washington, D.C. to Belfast

WAS-BF1

IAD-BFS

BWI-BFS

BWI-BHD

IAD-BHD

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

Related info for your journey

How long is the flight from Washington, D.C. to Belfast?
Delta, KLM, and British Airways can get you from Washington, D.C. to Belfast in just under 10h 10m. Your travel time can differ by up to 7h 35m. Airlines will cover a distance of 3348 mi. Both multi-stop and direct flights can be found to your destination and back.
What are the most popular routes from Washington, D.C. to Belfast?
The most popular flight routes from Washington, D.C. to Belfast are Baltimore/Washington - Belfast Intl, Baltimore/Washington - Belfast City and Washington, D.C. Dulles Intl - Belfast Intl.
Can I find deals for flights from Washington, D.C. to Belfast that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to Belfast flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to Belfast?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Belfast.
Can I find deals for business class flights from Washington, D.C. to Belfast?
Yes. Cheapflights offers flight deals from Washington, D.C. to Belfast by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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How does Cheapflights help users find flights from Washington, D.C. to Belfast?

Cheapflights makes it easy to find Washington, D.C. to Belfast flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Washington, D.C. to Belfast?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Belfast from Washington, D.C..

Can Cheapflights find flights from Washington, D.C. to Belfast with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Washington, D.C. to Belfast, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Washington, D.C. to Belfast become cheaper?

Yes, Cheapflights offers price alerts on Washington, D.C. to Belfast flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from Washington, D.C. to Belfast from £203

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Washington, D.C. to Belfast

Cheapest flights from Washington, D.C. to BelfastExplore the most affordable flight options available from Washington, D.C. to Belfast. 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 Washington, D.C. to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2026.

Best flights from Washington, D.C. to BelfastDiscover carefully curated flight deals from Washington, D.C. to Belfast 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 Washington, D.C. to Belfast 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 Washington, D.C. to BelfastDiscover last-minute flight deals from Washington, D.C. to Belfast. Data last updated 18 September 2026 and is based on user searches.

Discover last-minute flight deals from Washington, D.C. to Belfast. Data last updated 18 September 2026 and is based on user searches.

One-way flights from Washington, D.C. to BelfastSearch for one-way flight options from Washington, D.C. to Belfast. Find affordable one-way fares based on user searches. Data last updated 18 September 2026.

Search for one-way flight options from Washington, D.C. to Belfast. Find affordable one-way fares based on user searches. Data last updated 18 September 2026.

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Best time to book a flight from Washington, D.C. to Belfast

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Related info for your journey

How long is the flight from Washington, D.C. to Belfast?

What are the most popular routes from Washington, D.C. to Belfast?

Can I find deals for flights from Washington, D.C. to Belfast that include hotel bookings?

How can I find direct flights from Washington, D.C. to Belfast?

Can I find deals for business class flights from Washington, D.C. to Belfast?

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.

Complete your trip

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

Direct flights to Northern Ireland

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Search flights from Washington, D.C. to Belfast by cabin class

Find flights from Washington, D.C. to Belfast, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Washington, D.C. and Belfast flights

Browse other Washington, D.C. and Belfast flight options. Last updated on 18 September 2026.

Other flights from Washington, D.C.

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Cheapest flights from Washington, D.C. to Belfast
Explore the most affordable flight options available from Washington, D.C. to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2026.

Best flights from Washington, D.C. to Belfast
Discover carefully curated flight deals from Washington, D.C. to Belfast 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 Washington, D.C. to Belfast
Discover last-minute flight deals from Washington, D.C. to Belfast. Data last updated 18 September 2026 and is based on user searches.

One-way flights from Washington, D.C. to Belfast
Search for one-way flight options from Washington, D.C. to Belfast. Find affordable one-way fares based on user searches. Data last updated 18 September 2026.