726 € Cheap Flights from Southampton to Seattle

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Flight deals from Southampton to Seattle

Looking for a cheap last-minute deal or the best return flight from Southampton Airport to Seattle? If you want to travel next month, return fares start from 800 €. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Southampton to Seattle

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Southampton to Seattle flights are currently cheapest in September.

Southampton to Seattle: Flight information

The things to know before you go.
Cheapest flight found726 €
Cheapest month to flySeptember

Finding cheap flights from Southampton to Seattle: Frequently asked questions

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Paine Field.
The best price we found for a return flight from Southampton to Seattle is 726 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Southampton to Seattle. But we found flights with one or more stops from 726 €.
As of July 2026, there are no flights flying from Southampton to Seattle.
The cheapest month to fly from Southampton to Seattle is usually September.
If you're flying from Southampton Airport, the cheapest airport near Seattle is Seattle / Tacoma International – which is 19.5 km away from the centre of Seattle. We've found flights into this airport from 726 €.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Southampton Airport to Seattle on Wednesday, 9 September 2026.
No airlines currently offer direct flights between Southampton Airport and Seattle. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.

In July, the average temperature is usually around 17°C. August is typically the warmest month in Seattle, when it usually averages around 23°C. You can expect the least rain in July. The coldest month is December, with temperatures averaging 0°C. The rainiest month is November.
Currently, Aer Lingus offers the cheapest flight tickets to Seattle.

Flying from Southampton Airport (SOU) to Seattle: what you need to know

  • Seattle is seven hours behind Southampton, where Southampton Airport is located. Seattle observes the UTC-7 timezone.

  • For a stress-free journey, turn up at the airport two hours ahead of international flights and an hour before domestic departures. That way, you can comfortably catch your SOU to Seattle flight.

  • If you're heading away during a bank holiday or another peak period, give yourself extra time. A good general rule is two hours ahead of domestic flights and up to four hours before international departures. Queues at check-in and security will be longer.

  • Whether you want to explore another city as part of your journey or just take a break, we make it easy to find plane tickets from SOU to Seattle with a stopover. To compare your options, deselect 'Direct flights only.' Amsterdam Airport Schiphol (AMS) is a popular stop to make.

  • The journey from central Southampton to SOU takes around 25 minutes on public transport. If you drive, ride-share or take a cab, you'll cover the 6 kilometres in 20 minutes or so, depending on traffic conditions.

  • Catching an early flight from Southampton Airport to Seattle? Avoid the stress of rushing to the terminal (and catch some extra z's) by choosing one of these stays near SOU:

  • 55.7% of flights that take off from Southampton Airport reach their destination on time.

How to find the cheapest flights from Southampton Airport (SOU) to Seattle

  • 475 € is currently the lowest price for a one-way Southampton Airport to Seattle flight. A return plane ticket starts from 726 €. These fares can change depending on demand.

  • Booking early is often the key to finding a cheap flight from SOU to Seattle. Airlines adjust prices based on demand, so the nearer you get to departure, the more you'll likely spend.

  • Finding cheap tickets from Southampton Airport to Seattle is more likely if you're flexible with your travel plans. Try using the 'Whole month' tool to access the lowest fares throughout the month and walk away with an epic deal.

  • There's no need to keep looking every day to find out if fares have dropped when you create a Price Alert. We'll update you the moment there's an even better deal on cheap flights from SOU to Seattle.

  • Tailor your flights with filters. Select your ideal departure and arrival times, airlines and total journey duration. You can also sort your results by 'Fastest,' 'Best' or 'Cheapest' flights from Southampton Airport to Seattle.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Seattle-Tacoma International Airport (SEA) is around 23 kilometres from central Seattle. If you're catching a cab or a ride-share, the drive takes about 20 minutes.

  • Getting there by public transport takes around 55 minutes.

  • If you have a late flight from Southampton Airport to Seattle, nothing beats the convenience of staying close to the terminal. Grab your suitcases from the carousel and then be showered and resting soon after at one of these accommodation options near SEA:

  • Follow your own route with a Seattle-Tacoma International Airport rental car. Pick up a set of wheels from Thrifty, Europcar or Budget and find adventure across Seattle and beyond.

  • For the best deal, reserve your vehicle from Seattle-Tacoma International Airport about one week ahead of your flight from SOU to Seattle.

Lake Union Sea Plane Base Airport (LKE)

  • Lake Union Sea Plane Base Airport (LKE) is about 3 kilometres from the centre of Seattle. After your flight from Southampton Airport to Seattle, it'll take you around 10 minutes to get to the heart of the city in a ride-share or cab.

  • If you choose to travel on public transport, you'll get to the city centre in 25 minutes or so.

  • After stepping off your SOU to Seattle flight, settle in at a hotel close to LKE. These are some comfortable accommodation options that'll help you slip into relaxation mode:

Best time to go to Seattle

  • Before you book your flights from Southampton Airport to Seattle, consider which time of year is best for you. High season in Seattle offers a bustling atmosphere and plenty to do, while low season brings cheaper hotel deals and smaller crowds.

  • When booking your Southampton Airport to Seattle plane ticket, think about the type of weather you enjoy. August is the warmest month in Seattle, with temperatures ranging from 12ºC (54ºF) to 28ºC (82ºF).

  • If you like travelling in cooler conditions, search for a cheap ticket from SOU to Seattle in February when temperatures average between -1ºC (30ºF) and 11ºC (52ºF).

More about Seattle

  • Start your Seattle trip off on the right foot by choosing the perfect place to stay. As soon as you've booked your flight from Southampton Airport to Seattle, browse our selection of accommodation options including:

  • LMN Architects and Greyhound: Bus Station are just a couple of the leading attractions to add to your Seattle travel itinerary. Keep the momentum going by heading to Boeing Radiation Effects Lab.

Explore more of United States

  • You've seen Seattle, now it's time to discover other parts of United States. Journey about 241 kilometres south to Portland to check off its top attractions. From Pioneer Courthouse Square to Portland Japanese Garden and Pittock Mansion, you'll have a full itinerary ahead.

  • Around 370 kilometres east of Seattle, Spokane is another favourite stop in United States. Experience this destination's highlights firsthand at Manito Park, Northwest Museum of Arts & Culture and Spokane Falls.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.