$353+ Cheap flights from Washington to Belfast Intl (BFS)
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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BFS
Apr 6 — Apr 131
1 adult, Economy
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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
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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 to Belfast Intl
Keep the following information in mind while searching for Washington to Belfast Intl flight deals. Data was last updated April 1, 2025.
Round-trip from | $879 (Mytrip) |
|---|---|
One-way from | $353 (Kiwi.com) |
Popular in | June |
Cheapest in | October |
Average price | $838 |
Find flight deals from Washington to Belfast Intl
Cheapest flights from Washington to Belfast IntlExplore the most affordable flight options available from Washington to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 1, 2025.
Explore the most affordable flight options available from Washington to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 1, 2025.
This Mytrip deal was found by Cheapflights users on 3/31. 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 5/153:45 pmSEA - BFS
2 stops16h 55mMultiple Airlines
Thu 5/226:10 amBFS - SEA
3 stops26h 00mMultiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$879
This Mytrip deal was found by Cheapflights users on 3/31. 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 5/163:20 pmPDX - BFS
2 stops20h 45mMultiple Airlines
Fri 5/236:05 amBFS - PDX
3 stops42h 40mMultiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$1,146
Cheapflights Fare Finder
Customize your flight search to find flights from Washington 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 2,558,603 searches. Data last updated April 1, 2025.
Use the filters below to find and compare flights from Washington to Belfast Intl Airport that are best for you.
Fly from
Washington
Fly to
Belfast Intl
Route
Depart
Return
Price
SeattleBelfast
SEA - BFS
SEABFS
Seattle/Tacoma Intl
Thu 5/15
3:45 pm-4:40 pm
2 stops16h 55m
Belfast Intl
Thu 5/22
6:10 am-12:10 am
3 stops26h 00m
$879
PortlandBelfast
PDX - BFS
PDXBFS
Portland
Fri 5/16
3:20 pm-8:05 pm
2 stops20h 45m
Belfast Intl
Fri 5/23
6:05 am-4:45 pm
3 stops42h 40m
$1,146
SeattleBelfast
SEA - BFS
SEABFS
Seattle/Tacoma Intl
Sun 5/4
7:35 pm-3:00 pm
3 stops59h 25m
$353
Best time to book a flight from Washington to Belfast Intl
Have a flexible travel schedule? Discover the best time to fly to Belfast Intl from Washington with our price prediction graph.
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.
Cheapflights Insights
Everything you need to know about your flight from Washington to Belfast Intl Airport
What is the cheapest time of day to fly from WA to BFS?
Find hourly flight availability from Washington to Belfast Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 1, 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from State of Washington to Belfast Intl Airport as you normally would.
Rainfall in Belfast Intl by month
Plan your trip to Belfast Intl by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Belfast Intl Airport 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 Intl Airport when rainfall is around 2.0 in.
Temperature in Belfast Intl by month
Plan your trip to Belfast Intl by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Belfast Intl Airport, 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).
Related info for your journey
Find useful and relevant information for your journey from Washington 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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Alternative routes for Washington to Belfast Intl
See prices for flight routes from nearby airports that may be better suited for you.
Top airline flying from Washington to Belfast Intl
Discover the top airline that operate flights from Washington to Belfast Intl. 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 April 1, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$544 | Average$1,074 | FlexibilityNo cancel fee | On-time70% |