$461+ Cheap flights from Washington, D.C. (WAS) to Belfast
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 7/7. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Washington, D.C. to Belfast 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 Washington, D.C. to Belfast
Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) 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 June 12, 2025.
Round-trip from | $630 (American Airlines) |
|---|---|
One-way from | $461 (Cheapflightsfares) |
Popular in | June |
Cheapest in | August |
Average price | $1,232 |
Find flight deals from Washington, D.C. to Belfast
Cheapest flights from Washington, D.C. to BelfastExplore the most affordable flight options available from Washington, D.C. to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.
Explore the most affordable flight options available from Washington, D.C. to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.
This American Airlines deal was found by Cheapflights users on 6/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 6/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Ovago deal was found by Cheapflights users on 6/10. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 6/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This FlightHub deal was found by Cheapflights users on 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This PLAY deal was found by Cheapflights users on 6/9. 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 PLAY is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Ovago deal was found by Cheapflights users on 6/10. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Bravofly deal was found by Cheapflights users on 6/12. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This KLM deal was found by Cheapflights users on 6/10. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This KLM deal was found by Cheapflights users on 6/10. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 6/10. 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.
Cheapflights Fare Finder
Customize your flight search to find flights from Washington, D.C. 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 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Belfast 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
Sat 9/6
5:50 pm-10:10 am
1 stop11h 20m
Belfast City
Sat 12/20
6:30 am-3:35 pm
1 stop14h 05m
BaltimoreBelfast
BWI - BHD
BWIBHD
Baltimore/Washington
Fri 10/3
9:20 pm-3:30 pm
1 stop13h 10m
Belfast City
Mon 10/6
12:15 pm-7:35 pm
1 stop12h 20m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Fri 9/5
5:50 pm-8:50 am
1 stop10h 00m
Belfast City
Mon 9/8
7:30 pm-3:00 pm
2 stops24h 30m
Washington, D.C.Belfast
DCA - BHD
DCABHD
Washington, D.C. Reagan-National
Fri 10/3
7:23 pm-3:30 pm
2 stops15h 07m
Belfast City
Sun 10/12
1:00 pm-10:55 pm
2 stops14h 55m
BaltimoreBelfast
BWI - BHD
BWIBHD
Baltimore/Washington
Fri 10/3
6:44 pm-6:15 pm
2 stops18h 31m
Belfast City
Mon 10/6
6:40 am-7:35 pm
1 stop17h 55m
Washington, D.C.Belfast
DCA - BHD
DCABHD
Washington, D.C. Reagan-National
Fri 8/1
2:54 pm-9:25 am
2 stops13h 31m
Belfast City
Fri 8/8
9:30 am-10:37 pm
2 stops18h 07m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Mon 8/4
8:31 pm-4:55 pm
2 stops15h 24m
Belfast City
Wed 8/20
5:25 pm-12:02 pm
2 stops23h 37m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Fri 9/5
8:23 pm-4:55 pm
2 stops15h 32m
Belfast City
Mon 9/8
6:30 am-7:43 pm
2 stops18h 13m
Washington, D.C.Belfast
DCA - BHD
DCABHD
Washington, D.C. Reagan-National
Fri 9/5
7:55 pm-4:55 pm
2 stops16h 00m
Belfast City
Mon 9/8
6:30 am-5:05 pm
2 stops15h 35m
Washington, D.C.Belfast
IAD - BHD
IADBHD
Washington, D.C. Dulles Intl
Fri 8/1
8:31 pm-4:55 pm
2 stops15h 24m
Belfast City
Thu 8/7
6:30 am-3:35 pm
1 stop14h 05m
Best time to book a flight from Washington, D.C. to Belfast
Have a flexible travel schedule? Discover the best time to fly to Belfast from Washington, D.C. with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Washington, D.C. to Belfast
What is the cheapest month to book a flight from Washington, D.C. to Belfast?
Currently, February is the cheapest month in which you can book a flight from Washington, D.C. to Belfast (average of $657). Flying from Washington, D.C. to Belfast in June is currently the most expensive (average of $1,189). 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.
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 2.0 - 3.5 inches per month. October is typically the wettest month, when rainfall can reach 3.5 in. April is typically the driest time to visit Belfast when rainfall is around 2.0 in.
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 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 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 June 12, 2025.
Read reviews from past customers who have flown Delta, KLM and American Airlines from Washington, D.C. to Belfast. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
Food
Crew
Comfort
Overall
Entertainment
Reviews
Kim,May 2025
PIH - SLC
Boarding
Food
Crew
Comfort
Overall
Entertainment
Reviews
Kim,May 2025
PIH - SLC
Boarding
Food
Crew
Comfort
Overall
Entertainment
Reviews
Kim,May 2025
PIH - SLC
Boarding
Food
Crew
Comfort
Overall
Entertainment
Reviews
Kim,May 2025
PIH - SLC
Boarding
Food
Crew
Comfort
Overall
Entertainment
Reviews
Kim,May 2025
PIH - SLC
Boarding
Food
Crew
Comfort
Overall
Entertainment
Reviews
Kim,May 2025
PIH - SLC
Related info for your journey
Find useful and relevant information for your journey from Washington, D.C. to Belfast. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Washington, D.C. to Belfast
See prices for flight routes from nearby airports that may be better suited for you.
Top airline flying from Washington, D.C. to Belfast
Discover the top airline that operate flights from Washington, D.C. 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 2,558,603 searches. Data last updated June 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$575 | Average$844 | FlexibilityNo cancel fee | On-time70% |