How do I get Price Alerts for flights from Belfast to Washington, D.C. Dulles Intl Airport?

Price Alerts will notify you by email when the price for flights to Washington, D.C. Dulles Intl Airport from Belfast decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

How does momondo find its flight prices?

We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

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.

£343 Cheap Flights from Belfast to Washington, D.C. Dulles Intl Airport in 2026

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Find the cheapest flights from Belfast to Washington, D.C.

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

16:25 - 20:20

BHD

IAD

32h 55m

1 stop

22:25 - 17:35

IAD

BHD

14h 10m

1 stop

£766American Airlines

Tue, 23 Jun - Tue, 11 Aug

15:35 - 17:00

BFS

IAD

30h 25m

2 stops

20:20 - 23:15

IAD

BFS

21h 55m

2 stops

£767Multiple Airlines

Thu, 11 Jun - Wed, 17 Jun

16:25 - 17:30

BHD

IAD

30h 05m

1 stop

17:34 - 15:20

IAD

BHD

16h 46m

2 stops

£772American Airlines

Tue, 23 Jun - Tue, 11 Aug

16:25 - 20:20

BHD

IAD

32h 55m

1 stop

22:25 - 15:20

IAD

BHD

11h 55m

1 stop

£774American Airlines

Tue, 23 Jun - Tue, 11 Aug

06:40 - 19:00

BFS

IAD

17h 20m

2 stops

17:15 - 18:55

IAD

BFS

20h 40m

2 stops

£780Multiple Airlines

Thu, 25 Jun - Thu, 2 Jul

06:10 - 20:29

BFS

IAD

19h 19m

3 stops

08:18 - 19:15

IAD

BFS

29h 57m

3 stops

£780Multiple Airlines

Thu, 11 Jun - Wed, 17 Jun

06:10 - 20:29

BFS

IAD

19h 19m

2 stops

08:18 - 19:15

IAD

BFS

29h 57m

3 stops

£820Multiple Airlines

Thu, 11 Jun - Wed, 17 Jun

06:30 - 15:50

BHD

IAD

14h 20m

1 stop

17:45 - 10:45

IAD

BHD

12h 00m

1 stop

£860British Airways

Tue, 23 Jun - Tue, 11 Aug

17:30 - 15:35

BHD

IAD

27h 05m

1 stop

18:10 - 09:20

IAD

BHD

10h 10m

1 stop

£1,039Virgin Atlantic

Sun, 24 May - Mon, 7 Sep

09:50 - 15:35

BHD

IAD

10h 45m

1 stop

12:29 - 09:20

IAD

BHD

15h 51m

2 stops

£1,116Delta

Tue, 23 Jun - Tue, 11 Aug

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

23 Jun

BHD16:25Belfast City

32h 55m

1 stop

IAD20:20Washington, D.C. Dulles Intl

11 Aug

IAD22:25Washington, D.C. Dulles Intl

14h 10m

1 stop

BHD17:35Belfast City

£766

American Airlines

23 Jun

BHD16:25Belfast City

30h 05m

1 stop

IAD17:30Washington, D.C. Dulles Intl

11 Aug

IAD17:34Washington, D.C. Dulles Intl

16h 46m

2 stops

BHD15:20Belfast City

£772

American Airlines

23 Jun

BHD16:25Belfast City

32h 55m

1 stop

IAD20:20Washington, D.C. Dulles Intl

11 Aug

IAD22:25Washington, D.C. Dulles Intl

11h 55m

1 stop

BHD15:20Belfast City

£774

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

Our best KLM deals on Belfast to Washington, D.C. Dulles Intl Airport flight tickets

KLM

23 Jun

BHD09:50Belfast City

14h 45m

2 stops

IAD19:35Washington, D.C. Dulles Intl

11 Aug

IAD12:29Washington, D.C. Dulles Intl

15h 51m

2 stops

BHD09:20Belfast City

£1,257

KLM

23 Jun

BHD09:50Belfast City

14h 45m

2 stops

IAD19:35Washington, D.C. Dulles Intl

11 Aug

IAD12:29Washington, D.C. Dulles Intl

15h 51m

2 stops

BHD09:20Belfast City

£1,260

KLM

23 Jun

BHD09:50Belfast City

14h 45m

2 stops

IAD19:35Washington, D.C. Dulles Intl

11 Aug

IAD12:29Washington, D.C. Dulles Intl

15h 51m

2 stops

BHD09:20Belfast City

£1,261

momondo Fare Finder

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

Cheapest return flight

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 23/6

16:25-20:20

1 stop32h 55m

Washington, D.C. Dulles Intl

Tue 11/8

22:25-17:35

1 stop14h 10m

£766

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 11/6

15:35-17:00

2 stops30h 25m

Washington, D.C. Dulles Intl

Wed 17/6

20:20-23:15

2 stops21h 55m

£767

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 23/6

16:25-17:30

1 stop30h 05m

Washington, D.C. Dulles Intl

Tue 11/8

17:34-15:20

2 stops16h 46m

£772

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 23/6

16:25-20:20

1 stop32h 55m

Washington, D.C. Dulles Intl

Tue 11/8

22:25-15:20

1 stop11h 55m

£774

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 25/6

06:40-19:00

2 stops17h 20m

Washington, D.C. Dulles Intl

Thu 2/7

17:15-18:55

2 stops20h 40m

£780

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 11/6

06:10-20:29

3 stops19h 19m

Washington, D.C. Dulles Intl

Wed 17/6

08:18-19:15

3 stops29h 57m

£780

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 11/6

06:10-20:29

2 stops19h 19m

Washington, D.C. Dulles Intl

Wed 17/6

08:18-19:15

3 stops29h 57m

£820

Fastest return journey

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 23/6

06:30-15:50

1 stop14h 20m

Washington, D.C. Dulles Intl

Tue 11/8

17:45-10:45

1 stop12h 00m

£860

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Sun 24/5

17:30-15:35

1 stop27h 05m

Washington, D.C. Dulles Intl

Mon 7/9

18:10-09:20

1 stop10h 10m

£1,039

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 23/6

09:50-15:35

1 stop10h 45m

Washington, D.C. Dulles Intl

Tue 11/8

12:29-09:20

2 stops15h 51m

£1,116

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Fastest flight time	14h 20m
Direct flights	None

The fastest flight from Belfast to Washington, D.C. Dulles Intl Airport takes 14h 20m

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.

Search flight deals

Frequently asked questions about flying from Belfast to Washington, D.C. Dulles Intl Airport

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 14h 20m.
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.

Frequently asked questions about flying from Belfast to Washington, D.C. Dulles Intl Airport

How do I get Price Alerts for flights from Belfast to Washington, D.C. Dulles Intl Airport?
Price Alerts will notify you by email when the price for flights to Washington, D.C. Dulles Intl Airport from Belfast decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.
How can I save money on flights from Belfast to Washington, D.C. Dulles Intl Airport with momondo?
Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.
How does momondo find its flight prices?
We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

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College Park

Springfield

Fairfax

Arlington

Gettysburg

Linthicum Heights

Front Royal

Glen Burnie

Winchester

Laurel

Ellicott City

Lutherville Timonium

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Westminster

Lexington Park

Leesburg

Ashburn

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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.