Find flights
When to book
Airlines
FAQs

Cheap flights from Washington, D.C. Dulles Intl Airport to Belfast from £509

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/3. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BHD
24 Dec — 31 Dec1
1 adult

Cheap flight deals from Dulles Intl to Belfast

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Belfast (BF1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 19 December 2024.

Round-trip from

£509

Popular in

June

Cheapest in

October

Average price

£847
4/3-9/3
  • 4/3-9/3
  • 4 total stops
  • 49h 30m total
  • Washington, D.C. to Belfast
Search Deals
High demand for flights, 12% potential price rise
Search Deals
Best time to find cheap flights, 5% potential price drop
Search Deals
Average for round-trip flights in December 2024
Search Deals

Find flight deals from Dulles Intl to Belfast

Best flights from Dulles Intl to Belfast
Discover carefully curated flight deals from Dulles Intl to Belfast that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 19 December 2024.

Tue 4/317:30IAD - BFS
2 stops18h 30mMultiple Airlines
Sun 9/311:00BFS - IAD
2 stops31h 00mMultiple Airlines
Deal found 17/12£509
Thu 13/322:55IAD - BHD
1 stop11h 05mBritish Airways
Mon 17/319:30BHD - IAD
1 stop29h 15mBritish Airways
Deal found 18/12£510
Tue 4/318:00IAD - BHD
1 stop11h 30mIberia
Sun 9/309:10BHD - IAD
1 stop11h 25mIberia
Deal found 17/12£513
Tue 21/121:55IAD - BHD
1 stop13h 50mAmerican Airlines
Mon 27/109:10BHD - IAD
1 stop11h 25mAmerican Airlines
Deal found 16/12£514
Thu 13/319:59IAD - BHD
2 stops21h 01mDelta
Mon 17/306:30BHD - IAD
1 stop14h 15mDelta
Deal found 18/12£544
Mon 19/517:25IAD - BHD
1 stop22h 55mKLM
Mon 2/617:20BHD - IAD
1 stop27h 15mKLM
Deal found 18/12£621
Mon 19/520:40IAD - BHD
2 stops15h 45mAer Lingus
Mon 2/607:00BHD - IAD
2 stops17h 10mAer Lingus
Deal found 18/12£801
Tue 21/119:40IAD - BHD
2 stops19h 50mMultiple Airlines
Mon 27/107:25BHD - IAD
2 stops16h 00mMultiple Airlines
Deal found 16/12£554

Find flights from Dulles Intl to Belfast within your budget

Customise your flight search to find flights from Dulles Intl to Belfast 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, Cheapflights users made 858,174 searches. Data last updated 19 December 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Tue 4/3

17:30-17:00

2 stops18h 30m

Belfast Intl

Sun 9/3

11:00-14:00

2 stops31h 00m

£509

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Thu 13/3

22:55-14:00

1 stop11h 05m

Belfast City

Mon 17/3

19:30-20:45

1 stop29h 15m

£510

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 4/3

18:00-10:30

1 stop11h 30m

Belfast City

Sun 9/3

09:10-16:35

1 stop11h 25m

£513

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 21/1

21:55-16:45

1 stop13h 50m

Belfast City

Mon 27/1

09:10-15:35

1 stop11h 25m

£514

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Fri 17/1

17:35-16:50

1 stop18h 15m

Belfast City

Wed 22/1

06:30-15:45

1 stop14h 15m

£541

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Thu 13/3

19:59-21:00

2 stops21h 01m

Belfast City

Mon 17/3

06:30-16:45

1 stop14h 15m

£544

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Mon 19/5

17:25-21:20

1 stop22h 55m

Belfast City

Mon 2/6

17:20-15:35

1 stop27h 15m

£621

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Mon 19/5

20:40-17:25

2 stops15h 45m

Belfast City

Mon 2/6

07:00-19:10

2 stops17h 10m

£801

Flights are sorted by cheapest return flights first.

Deals found on 17/12

Best time to book a flight from Dulles Intl to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast from Dulles Intl with our price prediction graph.
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.

Travel insights for flights from Dulles Intl to Belfast

Get recent, data-driven insights about flights from Dulles Intl to Belfast including ideal travel times, pricing trends, and more.

Rainfall in Belfast by month

Plan your trip to Belfast by taking into account the average rainfall totals by month.

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.

Temperature in Belfast by month

Plan your trip to Belfast by taking into account the average temperature totals by month.

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).

Reviews of airlines servicing Belfast

Get insights into the airlines that provide service to Belfast. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Belfast. Reviews last updated 19 December 2024.
Delta
8.0
Very Good
8,604 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very Good
8,604 reviews
Delta
8.0
Very Good
8,604 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,349 reviews
Delta
8.0
Very Good
8,604 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very Good
8,604 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Aer Lingus
7.1
Good
1,078 reviews
Delta
8.0
Very Good
8,604 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Iberia
7.0
Good
2,655 reviews
Delta
8.0
Very Good
8,604 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Belfast. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Belfast round-trip?

    Our cheapest airline available from Washington, D.C. Dulles Intl Airport to Belfast is British Airways. Our recent data shows that you can find tickets from as low as £510 on this airline. Additional options worth looking into are Iberia and American Airlines, starting at £513 and £514 round-trip. Users have found that British Airways is 24% cheaper than the other options available to this destination.

  • Can I find deals for flights from Dulles Intl to Belfast that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Belfast flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Belfast?

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

  • Can I find deals for business class flights from Dulles Intl to Belfast?

    Yes. Cheapflights offers flight deals from Dulles Intl 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.

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Belfast?

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Belfast (average of £67). Flying from Washington, D.C. Dulles Intl Airport to Belfast in August is currently the most expensive (average of £90). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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.
Belfast car hire
Belfast Intl Airport car hire
Londonderry Eglinton Airport car hire
Isle of Islay Glenegedale Airport car hire
Londonderry car hire

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Dulles Intl to Belfast?

Deals for Dulles Intl to Belfast flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Dulles Intl to Belfast?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Dulles Intl to Belfast.

Can Cheapflights find flights from Dulles Intl to Belfast with no change fees?

Need flexible booking options for your flight to Belfast from Dulles Intl? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Dulles Intl to Belfast become cheaper?

Not ready to book yet? You can track prices for flights from Dulles Intl to Belfast on Cheapflights with our Price Alert feature and get notified when better prices are available.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.