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Cheap flights from Belfast to Washington, D.C. from £214

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Belfast to Washington, D.C. departing on 14/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags
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Cheap return flights

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American Airlines Logo
09:05 - 15:35BHD-IAD
11h 30m1 stop
American Airlines Logo
07:59 - 10:40IAD-BHD
21h 41m2 stops
£744American Airlines
Find Deal
Thu, 20 Nov - Mon, 24 Nov
British Airways Logo
17:45 - 19:55BHD-IAD
31h 10m1 stop
British Airways Logo
21:45 - 16:05IAD-BHD
13h 20m1 stop
£747British Airways
Find Deal
Thu, 20 Nov - Mon, 24 Nov
British Airways Logo
20:00 - 19:55BHD-IAD
28h 55m1 stop
British Airways Logo
21:45 - 16:05IAD-BHD
13h 20m1 stop
£748British Airways
Find Deal
Thu, 20 Nov - Mon, 24 Nov
American Airlines Logo
06:35 - 19:20BHD-IAD
17h 45m2 stops
American Airlines Logo
21:45 - 16:05IAD-BHD
13h 20m1 stop
£749American Airlines
Find Deal
Thu, 20 Nov - Mon, 24 Nov
American Airlines Logo
10:40 - 23:59BHD-IAD
18h 19m2 stops
American Airlines Logo
14:16 - 16:05IAD-BHD
20h 49m2 stops
£750American Airlines
Find Deal
Thu, 20 Nov - Mon, 24 Nov
American Airlines Logo
10:00 - 20:20BHD-IAD
15h 20m1 stop
American Airlines Logo
22:20 - 17:45IAD-BHD
14h 25m1 stop
£1,066American Airlines
Find Deal
Wed, 1 Apr - Sun, 5 Apr
American Airlines Logo
10:00 - 20:20BHD-IAD
15h 20m1 stop
American Airlines Logo
22:20 - 17:45IAD-BHD
14h 25m1 stop
£1,067American Airlines
Find Deal
Wed, 1 Apr - Sun, 5 Apr
American Airlines Logo
11:30 - 20:20BHD-IAD
13h 50m1 stop
American Airlines Logo
22:20 - 17:45IAD-BHD
14h 25m1 stop
£1,068American Airlines
Find Deal
Wed, 1 Apr - Sun, 5 Apr
British Airways Logo
11:05 - 20:20BHD-IAD
14h 15m2 stops
British Airways Logo
22:20 - 14:40IAD-BHD
11h 20m1 stop
£1,087British Airways
Find Deal
Wed, 1 Apr - Sun, 5 Apr
British Airways Logo
11:05 - 20:20BHD-IAD
14h 15m2 stops
British Airways Logo
17:40 - 11:30IAD-BHD
12h 50m1 stop
£1,088British Airways
Find Deal
Wed, 1 Apr - Sun, 5 Apr

American Airlines flights from Belfast to Washington, D.C. Dulles Intl Airport

Our best American Airlines deals on Belfast to Washington, D.C. Dulles Intl Airport flight tickets
American Airlines
20 Nov
BHD09:05Belfast City
11h 30m
1 stop
IAD15:35Washington, D.C. Dulles Intl
24 Nov
IAD07:59Washington, D.C. Dulles Intl
21h 41m
2 stops
BHD10:40Belfast City
£744
Find similar
American Airlines
20 Nov
BHD06:35Belfast City
17h 45m
2 stops
IAD19:20Washington, D.C. Dulles Intl
24 Nov
IAD21:45Washington, D.C. Dulles Intl
13h 20m
1 stop
BHD16:05Belfast City
£749
Find similar
American Airlines
20 Nov
BHD10:40Belfast City
18h 19m
2 stops
IAD23:59Washington, D.C. Dulles Intl
24 Nov
IAD14:16Washington, D.C. Dulles Intl
20h 49m
2 stops
BHD16:05Belfast City
£750
Find similar

British Airways flights from Belfast to Washington, D.C. Dulles Intl Airport

Our best British Airways deals on Belfast to Washington, D.C. Dulles Intl Airport flight tickets
British Airways
20 Nov
BHD17:45Belfast City
31h 10m
1 stop
IAD19:55Washington, D.C. Dulles Intl
24 Nov
IAD21:45Washington, D.C. Dulles Intl
13h 20m
1 stop
BHD16:05Belfast City
£747
Find similar
British Airways
20 Nov
BHD20:00Belfast City
28h 55m
1 stop
IAD19:55Washington, D.C. Dulles Intl
24 Nov
IAD21:45Washington, D.C. Dulles Intl
13h 20m
1 stop
BHD16:05Belfast City
£748
Find similar
British Airways
1 Apr
BHD11:05Belfast City
14h 15m
2 stops
IAD20:20Washington, D.C. Dulles Intl
5 Apr
IAD22:20Washington, D.C. Dulles Intl
11h 20m
1 stop
BHD14:40Belfast City
£1,087
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Belfast to Washington, D.C. Dulles Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 3 November 2025.
Use the filters below to find and compare flights from Belfast to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 20/11

09:05-15:35

1 stop11h 30m

Washington, D.C. Dulles Intl

Mon 24/11

07:59-10:40

2 stops21h 41m

£744

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 20/11

17:45-19:55

1 stop31h 10m

Washington, D.C. Dulles Intl

Mon 24/11

21:45-16:05

1 stop13h 20m

£747

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 20/11

20:00-19:55

1 stop28h 55m

Washington, D.C. Dulles Intl

Mon 24/11

21:45-16:05

1 stop13h 20m

£748

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 20/11

06:35-19:20

2 stops17h 45m

Washington, D.C. Dulles Intl

Mon 24/11

21:45-16:05

1 stop13h 20m

£749

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 20/11

10:40-23:59

2 stops18h 19m

Washington, D.C. Dulles Intl

Mon 24/11

14:16-16:05

2 stops20h 49m

£750

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 1/4

10:00-20:20

1 stop15h 20m

Washington, D.C. Dulles Intl

Sun 5/4

22:20-17:45

1 stop14h 25m

£1,066

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 1/4

10:00-20:20

1 stop15h 20m

Washington, D.C. Dulles Intl

Sun 5/4

22:20-17:45

1 stop14h 25m

£1,067

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 1/4

11:30-20:20

1 stop13h 50m

Washington, D.C. Dulles Intl

Sun 5/4

22:20-17:45

1 stop14h 25m

£1,068

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 1/4

11:05-20:20

2 stops14h 15m

Washington, D.C. Dulles Intl

Sun 5/4

22:20-14:40

1 stop11h 20m

£1,087

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 1/4

11:05-20:20

2 stops14h 15m

Washington, D.C. Dulles Intl

Sun 5/4

17:40-11:30

1 stop12h 50m

£1,088

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Belfast to Washington, D.C. Dulles Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

The cheapest time of day to fly to Washington, D.C. Dulles Intl Airport is at midday when flights can be purchased for as low as £726. In contrast, the most expensive time of day to depart to Washington, D.C. Dulles Intl Airport is in the morning when prices are around £813.

Cheap Belfast to Washington, D.C. Dulles Intl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Belfast to Washington, D.C. Dulles Intl Airport

Direct flights

None
There are no direct flights from Belfast to Washington, D.C. Dulles Intl Airport. There are no popular flight routes from Belfast to Washington, D.C. Dulles Intl Airport.
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  • How far is Belfast to Washington, D.C. Dulles Intl by plane?

    A flight from Belfast to Washington, D.C. Dulles Intl will travel around 3387.7 mi. By plane, this route typically takes 11h 30m.

  • When did momondo last update prices for flights from Belfast to Washington, D.C. Dulles Intl Airport?

    Prices for flights from Belfast to Washington, D.C. Dulles Intl Airport are updated daily.

  • How old do you have to be to fly from Belfast to Washington, D.C. Dulles Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Belfast to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The travel and health documents you'll need for your trip to Washington, D.C. Dulles Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Travelling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Laurel
College Park
Alexandria
Fairfax
Linthicum Heights
Bethesda
Front Royal
Cambridge
Winchester
Ellicott City
Westminster
Arlington
Ashburn
Woodbridge
Owings Mills
Sterling
Silver Spring
National Harbor

Why use momondo?

Why should I use momondo to find a flight deal from Belfast to Washington, D.C.?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Belfast to Washington, D.C. for you.

Can I find flights from Belfast to Washington, D.C. with flexible booking policies on momondo?

All flight searches from Belfast to Washington, D.C. on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Belfast to Washington, D.C.?

Once all potential Belfast to Washington, D.C. flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Belfast to Washington, D.C. right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Belfast to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they change.

An easier way to manage your Washington, D.C. Dulles Intl Airport trip

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