Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Washington, D.C. Dulles Intl Airport to Belfast from $627

This is the cheapest round-trip 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 11/12. 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
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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

Cheap round-trip flights

British Airways Logo
6:20 pm - 10:15 amIAD-BHD
10h 55m1 stop
British Airways Logo
10:40 am - 3:35 pmBHD-IAD
33h 55m1 stop
$627British Airways
Find Deal
Wed, Nov 12 - Sun, Nov 16
British Airways Logo
10:45 pm - 3:20 pmIAD-BHD
11h 35m1 stop
British Airways Logo
6:50 am - 8:20 pmBHD-IAD
18h 30m1 stop
$628British Airways
Find Deal
Tue, Oct 7 - Sun, Oct 12
British Airways Logo
7:21 pm - 3:35 pmIAD-BHD
15h 14m2 stops
British Airways Logo
1:50 pm - 3:00 pmBHD-IAD
30h 10m2 stops
$632British Airways
Find Deal
Wed, Sep 3 - Wed, Sep 10
KLM Logo
5:25 pm - 4:55 pmIAD-BHD
18h 30m1 stop
KLM Logo
5:25 pm - 3:35 pmBHD-IAD
27h 10m1 stop
$702KLM
Find Deal
Fri, Sep 26 - Mon, Sep 29
KLM Logo
5:25 pm - 9:15 pmIAD-BHD
22h 50m1 stop
KLM Logo
6:30 am - 3:35 pmBHD-IAD
14h 05m1 stop
$704KLM
Find Deal
Tue, Sep 9 - Sun, Sep 14
Virgin Atlantic Logo
11:00 am - 4:50 pmIAD-BHD
24h 50m2 stops
Virgin Atlantic Logo
6:30 am - 4:05 pmBHD-IAD
14h 35m1 stop
$707Virgin Atlantic
Find Deal
Wed, Nov 12 - Sun, Nov 16
Delta Logo
6:15 pm - 4:55 pmIAD-BHD
17h 40m2 stops
Delta Logo
6:30 am - 3:35 pmBHD-IAD
14h 05m1 stop
$708Delta
Find Deal
Tue, Sep 9 - Sun, Sep 14
Delta Logo
8:17 pm - 4:55 pmIAD-BHD
15h 38m2 stops
Delta Logo
6:30 am - 7:37 pmBHD-IAD
18h 07m2 stops
$717Delta
Find Deal
Fri, Sep 26 - Tue, Sep 30
Logo
8:30 pm - 8:25 pmIAD-BHD
18h 55m2 stops
Logo
11:10 am - 10:10 pmBHD-IAD
16h 00m2 stops
$780
Find Deal
Tue, Sep 23 - Sat, Sep 27
Logo
2:25 pm - 4:25 pmIAD-BHD
21h 00m3 stops
Logo
3:15 pm - 3:50 pmBHD-IAD
29h 35m3 stops
$946
Find Deal
Wed, Oct 8 - Tue, Oct 14

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
Sep 26
IAD5:25 pmWashington, D.C. Dulles Intl
18h 30m
1 stop
BHD4:55 pmBelfast City
Sep 29
BHD5:25 pmBelfast City
27h 10m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$702
Find similar
KLM
Sep 9
IAD5:25 pmWashington, D.C. Dulles Intl
22h 50m
1 stop
BHD9:15 pmBelfast City
Sep 14
BHD6:30 amBelfast City
14h 05m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$704
Find similar
KLM
Aug 17
IAD5:25 pmWashington, D.C. Dulles Intl
22h 50m
1 stop
BHD9:15 pmBelfast City
Sep 2
BHD6:30 amBelfast City
16h 04m
2 stops
IAD5:34 pmWashington, D.C. Dulles Intl
$712
Find similar

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

Our best Delta deals on Washington, D.C. Dulles Intl Airport to Belfast City Airport flight tickets
Delta
Sep 9
IAD6:15 pmWashington, D.C. Dulles Intl
17h 40m
2 stops
BHD4:55 pmBelfast City
Sep 14
BHD6:30 amBelfast City
14h 05m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$708
Find similar
Delta
Sep 26
IAD8:17 pmWashington, D.C. Dulles Intl
15h 38m
2 stops
BHD4:55 pmBelfast City
Sep 30
BHD6:30 amBelfast City
18h 07m
2 stops
IAD7:37 pmWashington, D.C. Dulles Intl
$717
Find similar
Delta
Sep 9
IAD12:13 pmWashington, D.C. Dulles Intl
23h 42m
2 stops
BHD4:55 pmBelfast City
Sep 14
BHD6:30 amBelfast City
18h 07m
2 stops
IAD7:37 pmWashington, D.C. Dulles Intl
$718
Find similar

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 August 6, 2025.
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

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 11/12

6:20 pm-10:15 am

1 stop10h 55m

Belfast City

Sun 11/16

10:40 am-3:35 pm

1 stop33h 55m

$627

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 10/7

10:45 pm-3:20 pm

1 stop11h 35m

Belfast City

Sun 10/12

6:50 am-8:20 pm

1 stop18h 30m

$628

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 9/3

7:21 pm-3:35 pm

2 stops15h 14m

Belfast City

Wed 9/10

1:50 pm-3:00 pm

2 stops30h 10m

$632

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Fri 9/26

5:25 pm-4:55 pm

1 stop18h 30m

Belfast City

Mon 9/29

5:25 pm-3:35 pm

1 stop27h 10m

$702

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 9/9

5:25 pm-9:15 pm

1 stop22h 50m

Belfast City

Sun 9/14

6:30 am-3:35 pm

1 stop14h 05m

$704

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 11/12

11:00 am-4:50 pm

2 stops24h 50m

Belfast City

Sun 11/16

6:30 am-4:05 pm

1 stop14h 35m

$707

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 9/9

6:15 pm-4:55 pm

2 stops17h 40m

Belfast City

Sun 9/14

6:30 am-3:35 pm

1 stop14h 05m

$708

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Fri 9/26

8:17 pm-4:55 pm

2 stops15h 38m

Belfast City

Tue 9/30

6:30 am-7:37 pm

2 stops18h 07m

$717

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 9/23

8:30 pm-8:25 pm

2 stops18h 55m

Belfast City

Sat 9/27

11:10 am-10:10 pm

2 stops16h 00m

$780

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 10/8

2:25 pm-4:25 pm

3 stops21h 00m

Belfast City

Tue 10/14

3:15 pm-3:50 pm

3 stops29h 35m

$946

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 day to depart on your flight to Belfast City Airport?

On average, the least expensive day to fly to Belfast City Airport from Washington, D.C. Dulles Intl Airport is on a Thursday. momondo users have found tickets for Thursday departures for as low as $626. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Friday is the most expensive day to depart from Washington, D.C. Dulles Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $873.

What is the cheapest time of day to depart on your flight to Belfast City Airport?

According to our data, the cheapest time of day to fly to Belfast City Airport is in the afternoon. momondo users have found flights departing from Washington, D.C. Dulles Intl Airport to Belfast City Airport in the afternoon for as low as $708. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive with an average ticket price of $779.

Can stopping save me money on Washington, D.C. Dulles Intl Airport to Belfast City Airport flights?

You could potentially save up to 37% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Belfast City Airport flight.

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

Best Price Found

$627

Fastest flight time

10h 00m

Direct flights

None
The best flight deal from Washington, D.C. Dulles Intl Airport to Belfast City Airport found on momondo in the last 72 hours is $627
The fastest flight from Washington, D.C. Dulles Intl Airport to Belfast City Airport takes 10h 00m
There are no direct flights from Washington, D.C. Dulles Intl Airport to Belfast City Airport. Popular non-direct route for this connection is Washington, D.C. Dulles Intl Airport - Belfast City Airport.
Search flight deals

  • 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 10h 00m.

  • 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 many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Belfast City Airport?

  • 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.

  • What is the most popular airline from Washington, D.C. Dulles Intl Airport to Belfast City Airport?

Best airlines flying from Washington, D.C. Dulles Intl Airport to Belfast City Airport

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Belfast City Airport with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $620Free CancellationRating
6.6
7,245 reviews
Search British Airways flights

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.

An easier way to manage your Belfast City Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 8/11
Mon 8/18
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Belfast

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo
Flights to London Heathrow Airportfrom $277
Flights to London Gatwick Airportfrom $361
Flights to London City Airportfrom $454
Flights to London Stansted Airportfrom $414
Flights to London Luton Airportfrom $429
Flights to London Southend Airportfrom $512
Flights to Glasgow Intl Airportfrom $417
Flights to Belfast Intl Airportfrom $475