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Cheap flights from Washington, D.C. Dulles Intl Airport to Belfast from $346

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to Belfast departing on 8/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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

Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
5:45 pm - 12:55 pm
IAD
-
BHD
14h 10m
1 stop
British Airways Logo
6:30 am - 3:55 pm
BHD
-
IAD
14h 25m
1 stop
$748British Airways
Mon, Oct 5 - Mon, Oct 12
British Airways Logo
9:45 pm - 12:50 pm
IAD
-
BHD
10h 05m
1 stop
British Airways Logo
10:00 am - 7:55 pm
BHD
-
IAD
14h 55m
1 stop
$820British Airways
Thu, Nov 5 - Tue, Nov 10
Multiple Airlines Logo
8:30 pm - 5:50 pm
IAD
-
BHD
16h 20m
2 stops
Multiple Airlines Logo
7:00 am - 7:10 pm
BHD
-
IAD
17h 10m
2 stops
$897Multiple Airlines
Tue, Sep 8 - Sat, Sep 12
Multiple Airlines Logo
8:30 pm - 4:50 pm
IAD
-
BHD
15h 20m
2 stops
Multiple Airlines Logo
9:30 am - 7:25 pm
BHD
-
IAD
14h 55m
2 stops
$963Multiple Airlines
Mon, Oct 5 - Mon, Oct 12
British Airways Logo
9:45 pm - 4:05 pm
IAD
-
BHD
13h 20m
1 stop
British Airways Logo
6:45 am - 3:40 pm
BHD
-
IAD
13h 55m
1 stop
$978British Airways
Mon, Nov 2 - Fri, Nov 6
British Airways Logo
9:45 pm - 4:05 pm
IAD
-
BHD
13h 20m
1 stop
British Airways Logo
6:45 am - 3:40 pm
BHD
-
IAD
13h 55m
1 stop
$979British Airways
Mon, Nov 2 - Fri, Nov 6
Multiple Airlines Logo
8:30 pm - 5:50 pm
IAD
-
BHD
16h 20m
2 stops
Multiple Airlines Logo
7:00 am - 8:25 pm
BHD
-
IAD
18h 25m
3 stops
$991Multiple Airlines
Tue, Sep 8 - Sat, Sep 12
Virgin Atlantic Logo
5:40 pm - 4:55 pm
IAD
-
BHD
18h 15m
1 stop
Virgin Atlantic Logo
5:30 pm - 3:35 pm
BHD
-
IAD
27h 05m
1 stop
$1,007Virgin Atlantic
Tue, Oct 13 - Wed, Oct 21
Multiple Airlines Logo
8:30 pm - 5:50 pm
IAD
-
BHD
16h 20m
2 stops
Multiple Airlines Logo
9:35 am - 8:20 pm
BHD
-
IAD
15h 45m
1 stop
$1,008Multiple Airlines
Tue, Sep 8 - Sat, Sep 12
Delta Logo
5:40 pm - 4:55 pm
IAD
-
BHD
18h 15m
1 stop
Delta Logo
9:50 am - 3:35 pm
BHD
-
IAD
10h 45m
1 stop
$1,010Delta
Sun, Oct 11 - Fri, Oct 23

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

Our best KLM deals on Washington, D.C. Dulles Intl Airport to Belfast City Airport flight tickets
KLM
Aug 16
IAD11:44 amWashington, D.C. Dulles Intl
16h 36m
2 stops
BHD9:20 amBelfast City
Aug 23
BHD9:50 amBelfast City
10h 45m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$1,065
KLM
Jul 23
IAD12:29 pmWashington, D.C. Dulles Intl
15h 51m
2 stops
BHD9:20 amBelfast City
Jul 27
BHD5:30 pmBelfast City
27h 05m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$1,321
KLM
Jul 23
IAD6:59 pmWashington, D.C. Dulles Intl
16h 56m
2 stops
BHD4:55 pmBelfast City
Jul 27
BHD9:50 amBelfast City
16h 13m
2 stops
IAD9:03 pmWashington, D.C. Dulles Intl
$1,400

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

Our best British Airways deals on Washington, D.C. Dulles Intl Airport to Belfast City Airport flight tickets
British Airways
Oct 5
IAD5:45 pmWashington, D.C. Dulles Intl
14h 10m
1 stop
BHD12:55 pmBelfast City
Oct 12
BHD6:30 amBelfast City
14h 25m
1 stop
IAD3:55 pmWashington, D.C. Dulles Intl
$748
British Airways
Nov 5
IAD9:45 pmWashington, D.C. Dulles Intl
10h 05m
1 stop
BHD12:50 pmBelfast City
Nov 10
BHD10:00 amBelfast City
14h 55m
1 stop
IAD7:55 pmWashington, D.C. Dulles Intl
$820
British Airways
Nov 2
IAD9:45 pmWashington, D.C. Dulles Intl
13h 20m
1 stop
BHD4:05 pmBelfast City
Nov 6
BHD6:45 amBelfast City
13h 55m
1 stop
IAD3:40 pmWashington, D.C. Dulles Intl
$978

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport to Belfast City 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 832,500 searches. Data last updated July 22, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Belfast City Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Mon 10/5

5:45 pm-12:55 pm

1 stop14h 10m

Belfast City

Mon 10/12

6:30 am-3:55 pm

1 stop14h 25m

$748
Quickest round-trip

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Thu 11/5

9:45 pm-12:50 pm

1 stop10h 05m

Belfast City

Tue 11/10

10:00 am-7:55 pm

1 stop14h 55m

$820

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 9/8

8:30 pm-5:50 pm

2 stops16h 20m

Belfast City

Sat 9/12

7:00 am-7:10 pm

2 stops17h 10m

$897

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Mon 10/5

8:30 pm-4:50 pm

2 stops15h 20m

Belfast City

Mon 10/12

9:30 am-7:25 pm

2 stops14h 55m

$963

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Mon 11/2

9:45 pm-4:05 pm

1 stop13h 20m

Belfast City

Fri 11/6

6:45 am-3:40 pm

1 stop13h 55m

$978

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Mon 11/2

9:45 pm-4:05 pm

1 stop13h 20m

Belfast City

Fri 11/6

6:45 am-3:40 pm

1 stop13h 55m

$979

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 9/8

8:30 pm-5:50 pm

2 stops16h 20m

Belfast City

Sat 9/12

7:00 am-8:25 pm

3 stops18h 25m

$991

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 10/13

5:40 pm-4:55 pm

1 stop18h 15m

Belfast City

Wed 10/21

5:30 pm-3:35 pm

1 stop27h 05m

$1,007

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 9/8

8:30 pm-5:50 pm

2 stops16h 20m

Belfast City

Sat 9/12

9:35 am-8:20 pm

1 stop15h 45m

$1,008

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 10/11

5:40 pm-4:55 pm

1 stop18h 15m

Belfast City

Fri 10/23

9:50 am-3:35 pm

1 stop10h 45m

$1,010

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Belfast from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Belfast City 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 airline that flies from Washington, D.C. Dulles Intl to Belfast City?

Aer Lingus is the most popular carrier operating from Washington, D.C. Dulles Intl to Belfast City

When to book flights from Washington, D.C. Dulles Intl Airport to Belfast City Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport to Belfast City Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. Dulles Intl Airport to Belfast City Airport (IAD to BHD) flight deals and tips

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

Fastest flight time

13h 20m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Belfast City Airport takes 13h 20m
There are no direct flights from Washington, D.C. Dulles Intl Airport to Belfast City Airport. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Belfast City Airport.
Search flight deals

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

  • How far is Washington, D.C. Dulles Intl to Belfast City by plane?

    Belfast City is 3389.6 mi away from Washington, D.C. Dulles Intl. A reasonable flight in good conditions will take 13h 20m.

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

    Prices for flights from Washington, D.C. Dulles Intl Airport to Belfast City Airport are refreshed on a daily basis.

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. Dulles Intl Airport to Belfast City Airport.

  • What documentation or ID do you need to fly to Belfast City Airport?

    The travel and health documents you'll need for your trip to Belfast City 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 Belfast City Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Belfast?

Book flights to Belfast if you plan to visit one of these locations
Newcastle
Bangor

Why use momondo?

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

It is quick and easy to find Washington, D.C. to Belfast flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Belfast that suits you.

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

Yes. All flights to Belfast from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to Belfast.

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

Of course. momondo tracks the price of Washington, D.C. to Belfast flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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