Cheap flights from Belfast Intl Airport to Seattle from £306
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 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from Belfast Intl to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from Belfast Intl (BFS) to Seattle (SEA). 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 15 April 2025.
Popular in | July |
|---|---|
Cheapest in | May |
Average price | £524 |
Find flight deals from Belfast Intl to Seattle
One-way flights from Belfast Intl to SeattleSearch for one-way flight options from Belfast Intl to Seattle. Find affordable one-way fares based on user searches. Data last updated 15 April 2025.
Search for one-way flight options from Belfast Intl to Seattle. Find affordable one-way fares based on user searches. Data last updated 15 April 2025.
Cheapflights Fare Finder
Customise your flight search to find flights from Belfast Intl to Seattle 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 15 April 2025.
Use the filters below to find and compare flights from Belfast Intl Airport to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
BelfastSeattle
BFS - SEA
BFSSEA
Belfast Intl
Thu 12/6
06:00-20:28
2 stops22h 28m
Best time to book a flight from Belfast Intl to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Belfast Intl with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Belfast Intl Airport to Seattle
What is the cheapest time of day to fly from BFS to SEA?
Find hourly flight availability from Belfast Intl to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 April 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Belfast Intl Airport to Seattle as you normally would.
Rainfall in Seattle by month
Plan your trip to Seattle by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.
Temperature in Seattle by month
Plan your trip to Seattle by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Seattle, 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 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).
Related info for your journey
Find useful and relevant information for your journey from Belfast Intl to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Travelling to a place near Belfast Intl Airport?
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Alternative routes for Belfast Intl to Seattle
See prices for flight routes from nearby airports that may be better suited for you.
Top airline flying from Belfast Intl to Seattle
Discover the top airline that operate flights from Belfast Intl to Seattle. 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 858,174 searches. Data last updated 15 April 2025.
Fly with Cheapflights
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How does Cheapflights help users find flights from Belfast Intl to Seattle?
Cheapflights makes it easy to find Belfast Intl to Seattle 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 Belfast Intl to Seattle?
By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Seattle from Belfast Intl.
Can Cheapflights find flights from Belfast Intl to Seattle with no change fees?
Yes, we can. To see specific flights from Belfast Intl to Seattle with no change fees, users can toggle flexible booking options after using the search form above to find flights.
Can Cheapflights notify me if prices for flights from Belfast Intl to Seattle become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Seattle from Belfast Intl today and book when prices fit your budget.