$374+ Cheap flights from Dulles Intl (IAD) to Belfast Intl (BFS)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BFS
Nov 7 — Nov 141
Round-trip
1 adult, Economy
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Find cheap flights from Dulles Intl to Belfast Intl with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Dulles Intl to Belfast Intl
Cheapest
Best
Last-minute
One-way
Cheapest flights from Dulles Intl to Belfast IntlExplore the most affordable flight options available from Dulles Intl to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 8, 2026.
Explore the most affordable flight options available from Dulles Intl to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 8, 2026.
This Mytrip deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/62:30 pm -
3 stops21h 40m
Fri 11/136:00 am -
2 stops18h 05m
Deal found 10/7![Multiple Airlines logo]()
$925
This Mytrip deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/117:40 pm -
2 stops19h 40m
Sun 11/158:40 pm -
3 stops26h 50m
Deal found 10/7![Multiple Airlines logo]()
$938
This Mytrip deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/191:30 pm -
2 stops28h 05m
Thu 11/262:45 pm -
2 stops26h 00m
Deal found 10/5![Multiple Airlines logo]()
$1,018
This Mytrip deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/241:15 pm -
2 stops28h 15m
Fri 10/306:15 am -
2 stops34h 30m
Deal found 10/6![Multiple Airlines logo]()
$1,063
This Mytrip deal was found by Cheapflights users on 10/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/318:40 pm -
2 stops20h 15m
Mon 11/26:20 am -
2 stops17h 10m
Deal found 10/3![Multiple Airlines logo]()
$1,068
This Mytrip deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/217:40 pm -
2 stops17h 15m
Mon 1/183:20 pm -
3 stops28h 20m
Deal found 10/5![Multiple Airlines logo]()
$1,102
Best flights from Dulles Intl to Belfast IntlDiscover carefully curated flight deals from Dulles Intl to Belfast Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 8, 2026.
Discover carefully curated flight deals from Dulles Intl to Belfast Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 8, 2026.
This Mytrip deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/62:30 pm -
3 stops21h 40m
Fri 11/136:00 am -
2 stops18h 05m
Deal found 10/7![Multiple Airlines logo]()
$925
This Mytrip deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/111:30 pm -
2 stops22h 45m
Sun 11/156:15 am -
2 stops34h 30m
Deal found 10/7![Multiple Airlines logo]()
$1,007
This Mytrip deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/191:30 pm -
2 stops28h 05m
Thu 11/262:45 pm -
2 stops26h 00m
Deal found 10/5![Multiple Airlines logo]()
$1,018
This Mytrip deal was found by Cheapflights users on 10/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/318:40 pm -
2 stops20h 15m
Mon 11/26:20 am -
2 stops17h 10m
Deal found 10/3![Multiple Airlines logo]()
$1,068
This Mytrip deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/217:40 pm -
2 stops17h 15m
Mon 1/183:20 pm -
3 stops28h 20m
Deal found 10/5![Multiple Airlines logo]()
$1,102
This Mytrip deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/241:15 pm -
2 stops28h 10m
Thu 10/298:50 am -
2 stops31h 55m
Deal found 10/6![Multiple Airlines logo]()
$1,164
Last-minute flights from Dulles Intl to Belfast IntlDiscover last-minute flight deals from Dulles Intl to Belfast Intl. Data last updated October 8, 2026 and is based on user searches.
Discover last-minute flight deals from Dulles Intl to Belfast Intl. Data last updated October 8, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/241:15 pm -
2 stops28h 15m
Fri 10/306:15 am -
2 stops34h 30m
Deal found 10/6![Multiple Airlines logo]()
$1,063
This Mytrip deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/241:15 pm -
2 stops28h 10m
Thu 10/298:50 am -
2 stops31h 55m
Deal found 10/6![Multiple Airlines logo]()
$1,164
This Mytrip deal was found by Cheapflights users on 10/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/318:40 pm -
2 stops20h 15m
Mon 11/26:20 am -
2 stops17h 10m
Deal found 10/3![Multiple Airlines logo]()
$1,068
This Mytrip deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/62:30 pm -
3 stops21h 40m
Fri 11/136:00 am -
2 stops18h 05m
Deal found 10/7![Multiple Airlines logo]()
$925
This Mytrip deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/117:40 pm -
2 stops19h 40m
Sun 11/158:40 pm -
3 stops26h 50m
Deal found 10/7![Multiple Airlines logo]()
$938
This Mytrip deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/191:30 pm -
2 stops28h 05m
Thu 11/262:45 pm -
2 stops26h 00m
Deal found 10/5![Multiple Airlines logo]()
$1,018
One-way flights from Dulles Intl to Belfast IntlSearch for one-way flight options from Dulles Intl to Belfast Intl. Find affordable one-way fares based on user searches. Data last updated October 8, 2026.
Search for one-way flight options from Dulles Intl to Belfast Intl. Find affordable one-way fares based on user searches. Data last updated October 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1210:35 pm -
2 stops35h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Multiple Airlines logo]()
$374
This Kiwi.com deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1110:35 pm -
3 stops52h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Multiple Airlines logo]()
$417
This Kiwi.com deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/28:50 pm -
2 stops28h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![Multiple Airlines logo]()
$454
Find flight deals from Dulles Intl to Belfast Intl
Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Belfast Intl (BFS). 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 October 8, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $925 (Mytrip) |
One-way from | $374 (Kiwi.com) |
Cheapflights Fare Finder
Customize your flight search to find flights from Dulles Intl to Belfast Intl 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 7,457,451 searches. Data last updated October 8, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Belfast Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
Washington, D.C.Belfast
IAD Washington, D.C. Dulles Intl - BFS Belfast Intl
IADBFS
Washington, D.C. Dulles Intl
Sat 1/2
8:50 pm-6:45 am
2 stops28h 55m
Belfast Intl
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
$454
Washington, D.C.Belfast
IAD Washington, D.C. Dulles Intl - BFS Belfast Intl
IADBFS
Washington, D.C. Dulles Intl
Fri 11/6
2:30 pm-5:10 pm
3 stops21h 40m
Belfast Intl
Fri 11/13
6:00 am-7:05 pm
2 stops18h 05m
$925
Washington, D.C.Belfast
IAD Washington, D.C. Dulles Intl - BFS Belfast Intl
IADBFS
Washington, D.C. Dulles Intl
Wed 11/11
1:30 pm-5:15 pm
2 stops22h 45m
Belfast Intl
Sun 11/15
6:15 am-11:45 am
2 stops34h 30m
$1,007
Washington, D.C.Belfast
IAD Washington, D.C. Dulles Intl - BFS Belfast Intl
IADBFS
Washington, D.C. Dulles Intl
Thu 11/19
1:30 pm-10:35 pm
2 stops28h 05m
Belfast Intl
Thu 11/26
2:45 pm-11:45 am
2 stops26h 00m
$1,018
Washington, D.C.Belfast
IAD Washington, D.C. Dulles Intl - BFS Belfast Intl
IADBFS
Washington, D.C. Dulles Intl
Sat 10/31
8:40 pm-8:55 pm
2 stops20h 15m
Belfast Intl
Mon 11/2
6:20 am-6:30 pm
2 stops17h 10m
$1,068
Washington, D.C.Belfast
IAD Washington, D.C. Dulles Intl - BFS Belfast Intl
IADBFS
Washington, D.C. Dulles Intl
Mon 12/21
7:40 pm-5:55 pm
2 stops17h 15m
Belfast Intl
Mon 1/18
3:20 pm-2:40 pm
3 stops28h 20m
$1,102
Washington, D.C.Belfast
IAD Washington, D.C. Dulles Intl - BFS Belfast Intl
IADBFS
Washington, D.C. Dulles Intl
Sat 10/24
1:15 pm-10:25 pm
2 stops28h 10m
Belfast Intl
Thu 10/29
8:50 am-12:45 pm
2 stops31h 55m
$1,164
Sorted by cheapest first
Compare providers for flights from Dulles Intl to Belfast Intl
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Belfast Intl in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Belfast Intl Airport flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Washington, D.C. Dulles Intl Airport-Belfast Intl Airport flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Belfast Intl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Belfast Intl Airport flights, Cheapflights users trust Ovago the most. Ovago has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Belfast Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Dulles Intl to Belfast Intl
Have a flexible travel schedule? Discover the best time to fly to Belfast Intl from Dulles Intl with our price prediction graph.
IAD-BFS
Estimated round-trip 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.
Related info for your journey
Find useful and relevant information for your journey from Dulles Intl to Belfast Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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