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Cheap flights from Dulles Intl (IAD) to Belfast from $312

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/16. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
IAD — BHD
May 10 — May 171
From?
To?
Fri 5/10
Fri 5/17
1 adult, Economy
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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 May 5, 2024.

Popular in

August

Cheapest in

October

Round-trip from

$640

One-way from

$434
High demand for flights, 58% potential price rise
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Best time to find cheap flights, 54% potential price drop
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From Washington, D.C. Dulles Intl to Belfast
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One-way flight from Washington, D.C. Dulles Intl to Belfast
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What is the cheapest day to fly round-trip from Washington, D.C. Dulles Intl Airport to Belfast?

Departing on a Thursday is a good option for securing a great price. You can expect to save up to 35% when planning your travel around this day of the week.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Belfast?

The best pricing can be found in the month of September. Prices to Belfast from Washington, D.C. Dulles Intl Airport average $840. You can even find prices in September for less than $840, as users have found deals to Belfast from as low as $678. The month of December appears to be one of the more expensive times to travel to Belfast from Washington, D.C. Dulles Intl Airport. Flying in the targeted month can save you up to 40%.

When is the cheapest time to fly from Washington, D.C. Dulles Intl Airport to Belfast (IAD - BFS)?

One of the essential ways to save on airfare from Washington, D.C. Dulles Intl Airport to Belfast is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 12% on airfare.

Cheap British Airways flights from Dulles Intl to Belfast

Explore cheap flight options specifically provided by British Airways for the route between Dulles Intl and Belfast. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,795,183 searches. Data last updated May 5, 2024.
Check out some of the cheapest British Airways flights we've come across from Washington, D.C. to Belfast. Make sure to double check the flight details before booking.
Fri 10/1110:45 pmIAD - BHD
1 stop14h 25mBritish Airways
Sat 10/199:40 amBHD - IAD
1 stop15h 50mBritish Airways
Deal found 5/4$611
Fri 10/115:55 pmIAD - BHD
1 stop10h 00mBritish Airways
Sat 10/196:50 amBHD - IAD
2 stops17h 25mBritish Airways
Deal found 5/4$635
Sun 8/115:55 pmIAD - BHD
1 stop12h 35mBritish Airways
Sun 8/187:40 pmBHD - IAD
1 stop29h 50mBritish Airways
Deal found 5/4$665
Sun 8/115:38 pmIAD - BHD
2 stops14h 22mBritish Airways
Sun 8/187:40 pmBHD - IAD
1 stop29h 50mBritish Airways
Deal found 5/4$693
Thu 7/185:55 pmIAD - BHD
1 stop12h 05mBritish Airways
Sun 7/287:40 pmBHD - IAD
1 stop29h 50mBritish Airways
Deal found 5/4$3,506

Cheap American Airlines flights from Dulles Intl to Belfast

Explore cheap flight options specifically provided by American Airlines for the route between Dulles Intl and Belfast. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,795,183 searches. Data last updated May 5, 2024.
Browse through some of the cheapest American Airlines flights traveling from Washington, D.C. to Belfast. Check back soon if you're not seeing flights that suit your needs.
Sun 10/135:31 pmIAD - BHD
2 stops14h 29mAmerican Airlines
Sun 10/273:05 pmBHD - IAD
1 stop29h 35mAmerican Airlines
Deal found 5/5$614
Sun 10/135:31 pmIAD - BHD
2 stops14h 29mAmerican Airlines
Sun 10/276:35 amBHD - IAD
2 stops19h 44mAmerican Airlines
Deal found 5/5$624
Tue 8/2710:45 pmIAD - BHD
1 stop13h 40mAmerican Airlines
Wed 9/119:50 amBHD - IAD
1 stop15h 40mAmerican Airlines
Deal found 5/4$626
Tue 8/2710:45 pmIAD - BHD
1 stop11h 35mAmerican Airlines
Wed 9/116:50 amBHD - IAD
2 stops21h 57mAmerican Airlines
Deal found 5/4$634
Mon 6/105:43 pmIAD - BHD
2 stops14h 07mAmerican Airlines
Tue 6/186:35 amBHD - IAD
1 stop18h 55mAmerican Airlines
Deal found 5/4$702
Wed 7/245:12 pmIAD - BHD
2 stops19h 28mAmerican Airlines
Wed 7/319:50 amBHD - IAD
2 stops19h 11mAmerican Airlines
Deal found 5/4$924
Mon 6/1010:45 pmIAD - BHD
1 stop14h 55mAmerican Airlines
Tue 6/189:45 amBHD - IAD
1 stop10h 55mAmerican Airlines
Deal found 5/4$958

Cheap Dulles Intl to Belfast flights in May & June 2024

Find cheap flight options from Dulles Intl to Belfast specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,795,183 searches. Prices were last updated on May 5, 2024.
These are some of the best deals we've found on flights to Belfast in 2024 at this time. More deals are always being added, so be sure to check back regularly.
Mon 6/105:43 pmIAD - BHD
2 stops14h 07mAmerican Airlines
Tue 6/186:35 amBHD - IAD
1 stop18h 55mAmerican Airlines
Deal found 5/4$702
Mon 6/1010:45 pmIAD - BHD
1 stop14h 55mAmerican Airlines
Tue 6/189:45 amBHD - IAD
1 stop10h 55mAmerican Airlines
Deal found 5/4$958
Mon 6/107:20 pmIAD - BHD
2 stops16h 30mDelta
Tue 6/185:20 pmBHD - IAD
2 stops29h 07mDelta
Deal found 5/4$961
Mon 6/106:00 pmIAD - BHD
1 stop15h 50mLufthansa
Tue 6/183:35 pmBHD - IAD
1 stop26h 55mLufthansa
Deal found 5/4$973
Mon 6/108:30 pmIAD - BFS
2 stops18h 55mMultiple Airlines
Tue 6/186:15 amBFS - IAD
2 stops18h 00mMultiple Airlines
Deal found 5/4$1,126
Mon 6/101:00 pmIAD - BFS
2 stops17h 40mMultiple Airlines
Tue 6/1810:30 amBFS - IAD
1 stop15h 00mMultiple Airlines
Deal found 5/4$1,401

Dulles Intl to Belfast 2024 flight deals

Discover exclusive flight deals for travel between Dulles Intl and Belfast in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,795,183 searches. Data last updated May 5, 2024.
These are some of the best deals we've found on flights to Belfast in 2024 at this time. More deals are always being added, so be sure to check back regularly.
Fri 10/1110:45 pmIAD - BHD
1 stop14h 25mBritish Airways
Sat 10/199:40 amBHD - IAD
1 stop15h 50mBritish Airways
Deal found 5/4$611
Sun 10/135:31 pmIAD - BHD
2 stops14h 29mAmerican Airlines
Sun 10/273:05 pmBHD - IAD
1 stop29h 35mAmerican Airlines
Deal found 5/5$614
Sun 10/135:31 pmIAD - BHD
2 stops14h 29mAmerican Airlines
Sun 10/276:35 amBHD - IAD
2 stops19h 44mAmerican Airlines
Deal found 5/5$624
Tue 8/2710:45 pmIAD - BHD
1 stop13h 40mAmerican Airlines
Wed 9/119:50 amBHD - IAD
1 stop15h 40mAmerican Airlines
Deal found 5/4$626
Tue 8/2710:45 pmIAD - BHD
1 stop11h 35mAmerican Airlines
Wed 9/116:50 amBHD - IAD
2 stops21h 57mAmerican Airlines
Deal found 5/4$634
Fri 10/115:55 pmIAD - BHD
1 stop10h 00mBritish Airways
Sat 10/196:50 amBHD - IAD
2 stops17h 25mBritish Airways
Deal found 5/4$635
Sun 8/115:55 pmIAD - BHD
1 stop12h 35mBritish Airways
Sun 8/187:40 pmBHD - IAD
1 stop29h 50mBritish Airways
Deal found 5/4$665
Sun 8/115:38 pmIAD - BHD
2 stops14h 22mBritish Airways
Sun 8/187:40 pmBHD - IAD
1 stop29h 50mBritish Airways
Deal found 5/4$693
Mon 6/105:43 pmIAD - BHD
2 stops14h 07mAmerican Airlines
Tue 6/186:35 amBHD - IAD
1 stop18h 55mAmerican Airlines
Deal found 5/4$702

One-way flights to Belfast from Dulles Intl

Search for one-way flight options from Dulles Intl to Belfast. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,795,183 searches. Data last updated May 5, 2024.
Users traveling one-way from Washington, D.C. to Belfast can select one of these great deals. Users needing a return flight from Washington, D.C. to Belfast should utilize the search form above.
Tue 7/168:30 pmIAD - BHD
2 stops30h 15mMultiple Airlines
Deal found 5/4$312
Wed 7/176:50 pmIAD - BHD
2 stops31h 40mMultiple Airlines
Deal found 5/4$328
Sun 7/146:50 pmIAD - BHD
3 stops36h 20mMultiple Airlines
Deal found 5/4$347
Wed 7/176:50 pmIAD - BHD
3 stops17h 50mMultiple Airlines
Deal found 5/4$353
Thu 7/1811:15 pmIAD - BHD
2 stops39h 45mMultiple Airlines
Deal found 5/4$385
Sat 9/283:20 pmIAD - BHD
1 stop13h 05mLufthansa
Deal found 5/4$403
Mon 7/1511:15 pmIAD - BHD
2 stops28h 50mMultiple Airlines
Deal found 5/4$416
Sat 9/283:00 pmIAD - BHD
2 stops20h 50mDelta
Deal found 5/4$418
Mon 7/155:25 pmIAD - BHD
1 stop18h 25mDelta
Deal found 5/4$429

Find flights from Dulles Intl to Belfast within your budget

Customize 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 2,795,183 searches. Data last updated May 5, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$611 - $1,410

Route

Depart

Return

Price

Washington, D.C. Dulles IntlBelfast City

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Fri 10/11

1 stop14h 25m

Belfast City

Sat 10/19

1 stop15h 50m

$611

Washington, D.C. Dulles IntlBelfast City

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 10/13

2 stops14h 29m

Belfast City

Sun 10/27

1 stop29h 35m

$614

Washington, D.C. Dulles IntlBelfast City

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 10/13

2 stops14h 29m

Belfast City

Sun 10/27

2 stops19h 44m

$624

Washington, D.C. Dulles IntlBelfast City

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 8/27

1 stop13h 40m

Belfast City

Wed 9/11

1 stop15h 40m

$626

Washington, D.C. Dulles IntlBelfast City

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Fri 10/11

1 stop10h 00m

Belfast City

Sat 10/19

2 stops17h 25m

$635

Washington, D.C. Dulles IntlBelfast City

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 8/11

2 stops22h 35m

Belfast City

Sun 8/18

2 stops33h 32m

$712

Washington, D.C. Dulles IntlBelfast City

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 8/21

2 stops35h 30m

Belfast City

Mon 9/2

2 stops32h 50m

$799

Washington, D.C. Dulles IntlBelfast Intl

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Wed 8/21

2 stops17h 50m

Belfast Intl

Mon 9/2

2 stops15h 50m

$843

Washington, D.C. Dulles IntlBelfast City

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 7/3

2 stops14h 30m

Belfast City

Sun 7/7

2 stops27h 50m

$1,410

Flights are sorted by cheapest first

Deals found on 5/4

When is the cheapest time to fly from Washington, D.C. Dulles Intl Airport to Belfast?

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Belfast. Price data was last updated on April 28, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Belfast flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Belfast by month

Plan your trip from Dulles Intl to Belfast by taking into account the cheapest months to travel. The average price of a one-way flight from Dulles Intl to Belfast is currently $377 while a round-trip flight costs $764. Price data was last updated on April 28, 2024.

Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Belfast (average of $641). Flying from Washington, D.C. Dulles Intl Airport to Belfast in June is currently the most expensive (average of $1,181). 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.

January

$674

February

$641

March

$690

April

$686

May

$788

June

$1,181

July

$988

August

$869

September

$759

October

$684

November

$658

December

$728

Temperature and rainfall in Belfast by month

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

BFS

Temperature

41 - 60.8 °F

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 May 5, 2024.
Peruse reviews from past customers who have flown with British Airways, American Airlines and Delta from Washington, D.C. to Belfast to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.1
Very good
10,826 reviews
Check prices

Crew

8.6

Food

7.4

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Overall

8.1

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Delta
8.1
Very good
10,826 reviews
Delta
8.1
Very good
10,826 reviews
Check prices

Crew

8.6

Food

7.4

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Overall

8.1

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

KLM
7.9
Good
1,603 reviews
Delta
8.1
Very good
10,826 reviews
Check prices

Crew

8.6

Food

7.4

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Overall

8.1

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

American Airlines
7.3
Good
14,713 reviews
Delta
8.1
Very good
10,826 reviews
Check prices

Crew

8.6

Food

7.4

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Overall

8.1

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Lufthansa
7.0
Good
7,719 reviews
Delta
8.1
Very good
10,826 reviews
Check prices

Crew

8.6

Food

7.4

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Overall

8.1

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

British Airways
6.8
Okay
6,874 reviews
Delta
8.1
Very good
10,826 reviews
Check prices

Crew

8.6

Food

7.4

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Overall

8.1

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

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.

  • Can I find flights from Washington, D.C. Dulles Intl Airport to Belfast for under $700 on Cheapflights?

    Yes, there are multiple flights from Washington, D.C. Dulles Intl Airport to Belfast for under $700. The cheapest flight booked recently is on British Airways for just $611, but on average you can expect to pay $752.

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

    Flying on British Airways is currently your cheapest option to Belfast, with prices starting at $611. Additional round-trip tickets that might be worth considering are offered by American Airlines and Delta, with the lowest prices starting at $614 and $712, respectively. British Airways is priced at 45% lower than the current average price of a flight leaving 3 months from now.

  • What does IAD to BFS mean?

    This is defined as Washington, D.C. Dulles Intl Airport (IAD) and Belfast Intl Airport (BFS). Codes like Belfast Intl Airport are often used to just call airports uniquely. While you’re still figuring out your travel plans, it’s not a bad idea to learn the names and codes of other airports around these areas: Belfast City Airport (BHD), Glasgow Prestwick Airport (PIK), Londonderry Eglinton Airport (LDY), Isle of Islay Glenegedale Airport (ILY), Campbeltown Machrihanish Airport (CAL).

  • Can I find deals for flights from Dulles Intl to Belfast that include extra baggage allowance?

    The amount of baggage you can bring on your Dulles Intl to Belfast flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Dulles Intl to Belfast with specific airlines?

    Yes, Cheapflights allows you to browse and filter Dulles Intl to Belfast flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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 vacation 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.

  • Can I find deals for flights from Dulles Intl to Belfast that allow pets onboard?

    Many airlines flying from Dulles Intl to Belfast offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Dulles Intl to Belfast?

    Yes, you can often find last-minute deals on Dulles Intl to Belfast flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Washington, D.C. Dulles Intl Airport to Belfast flight deals updated?

    The Washington, D.C. Dulles Intl Airport to Belfast flight deals you see on this page were last updated on 5/5.

See more FAQs

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Alternative routes for Dulles Intl to Belfast
See prices for flight routes from nearby airports that may be better suited for you.

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Top 2 airlines flying from Dulles Intl to Belfast

Discover the top 2 airlines that operate flights from Dulles Intl to Belfast. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,795,183 searches. Data last updated May 5, 2024.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$624Average$867FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest$626Average$754FlexibilityNo cancel feeOn-time71%
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Washington, D.C. Dulles Intl Airport to Scottsbluff flights

Search flights from Dulles Intl to Belfast by cabin class

Find flights from Dulles Intl to Belfast, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers 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?

Cheapflights makes it easy to find Dulles Intl to Belfast flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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?

Yes! Cheapflights helps users easily find flights from Dulles Intl to Belfast with no change fees.

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

Yes, Cheapflights offers price alerts on Dulles Intl to Belfast flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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