Cheap flights from Southampton to Seattle from £464
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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from Southampton to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from Southampton (SOU) 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 11 July 2025.
Find flight deals from Southampton to Seattle
Cheapest flights from Southampton to SeattleExplore the most affordable flight options available from Southampton to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.
Explore the most affordable flight options available from Southampton to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.
Cheapflights Fare Finder
Customise your flight search to find flights from Southampton 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 11 July 2025.
Use the filters below to find and compare flights from Southampton to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
SouthamptonSeattle
SOU - SEA
SOUSEA
Southampton Eastleigh
Sat 23/8
09:20-20:24
2 stops19h 04m
Seattle/Tacoma Intl
Sat 30/8
14:10-08:45
1 stop34h 35m
SouthamptonSeattle
SOU - SEA
SOUSEA
Southampton Eastleigh
Sat 23/8
17:35-22:07
2 stops36h 32m
Seattle/Tacoma Intl
Sat 30/8
15:15-08:45
2 stops33h 30m
SouthamptonSeattle
SOU - SEA
SOUSEA
Southampton Eastleigh
Sat 23/8
09:40-17:50
1 stop16h 10m
Seattle/Tacoma Intl
Fri 29/8
00:46-09:10
2 stops48h 24m
SouthamptonSeattle
SOU - SEA
SOUSEA
Southampton Eastleigh
Sat 23/8
09:40-20:40
2 stops19h 00m
Seattle/Tacoma Intl
Sat 30/8
15:45-08:45
3 stops33h 00m
SouthamptonSeattle
SOU - SEA
SOUSEA
Southampton Eastleigh
Sun 7/9
20:00-17:50
1 stop29h 50m
Best time to book a flight from Southampton to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Southampton with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Southampton to Seattle
What is the cheapest month to book a flight from Southampton to Seattle?
Currently, January is the cheapest month in which you can book a flight from Southampton to Seattle (average of £622). Flying from Southampton to Seattle in July is currently the most expensive (average of £946). 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.
Reviews of airlines servicing Seattle
Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated 11 July 2025.
Get a feel of what it's like to fly with KLM, Virgin Atlantic, andAer Lingus from Southampton to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
Overall
Boarding
Comfort
Entertainment
Crew
Reviews
Anonymous,Jun 2025
AMS - BOS
Food
Overall
Boarding
Comfort
Entertainment
Crew
Reviews
Anonymous,Jun 2025
AMS - BOS
Food
Overall
Boarding
Comfort
Entertainment
Crew
Reviews
Anonymous,Jun 2025
AMS - BOS
Food
Overall
Boarding
Comfort
Entertainment
Crew
Reviews
Anonymous,Jun 2025
AMS - BOS
Related info for your journey
Find useful and relevant information for your journey from Southampton to Seattle. 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 Southampton to Seattle
See prices for flight routes from nearby airports that may be better suited for you.
Fly with Cheapflights
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Southampton to Seattle?
Deals for Southampton to Seattle flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.
Why should you use Cheapflights to find cheap flight tickets from Southampton to Seattle?
Cheapflights simply makes it quick and affordable to book flights from Southampton to Seattle by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.
Can Cheapflights find flights from Southampton to Seattle with no change fees?
Need flexible booking options for your flight to Seattle from Southampton? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.
Can Cheapflights notify me if prices for flights from Southampton to Seattle become cheaper?
Yes, Cheapflights offers price alerts on Southampton to Seattle 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.