Find flights
When to book
Airlines
FAQs

Cheap flights from Southampton to Seattle from £495

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/3. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — SEA
25 Jan — 1 Feb1
1 adult

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 20 January 2025.

Round-trip from

£495
KLM
  • KLM
  • 4/3-11/3
  • 2 total stops
  • 68h 52m total
  • Southampton to Seattle
Search Deals

Find flight deals from Southampton to Seattle

Cheapest flights from Southampton to Seattle
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 20 January 2025.

Tue 4/309:00SOU - SEA
1 stop34h 37mKLM
Tue 11/315:15SEA - SOU
1 stop34h 15mKLM
Deal found 20/1£495
Tue 4/317:20SOU - SEA
1 stop26h 17mDelta
Mon 10/300:49SEA - SOU
2 stops24h 36mDelta
Deal found 20/1£519
Tue 4/319:25SOU - SEA
3 stops29h 35mMultiple Airlines
Tue 11/315:35SEA - SOU
3 stops33h 50mMultiple Airlines
Deal found 20/1£872

Find flights from Southampton to Seattle within your budget

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 20 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Tue 4/3

09:00-11:37

1 stop34h 37m

Seattle/Tacoma Intl

Tue 11/3

15:15-08:30

1 stop34h 15m

£495

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Tue 4/3

17:20-11:37

1 stop26h 17m

Seattle/Tacoma Intl

Mon 10/3

00:49-08:25

2 stops24h 36m

£519

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Tue 4/3

19:25-17:00

3 stops29h 35m

Seattle/Tacoma Intl

Tue 11/3

15:35-08:25

3 stops33h 50m

£872

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Tue 8/7

08:00-20:40

3 stops20h 40m

£610

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Tue 8/7

09:10-16:59

1 stop15h 49m

£831

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

Tue 8/7

17:35-11:40

1 stop26h 05m

£1,350

Flights are sorted by cheapest return flights first.

Deals found on 20/1

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.
Estimated return 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.

Travel insights for flights from Southampton to Seattle

Get recent, data-driven insights about flights from Southampton to Seattle including ideal travel times, pricing trends, and more.

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.

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).

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 20 January 2025.
Delta
8.0
Very Good
8,521 reviews
Check prices

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very Good
8,521 reviews
Delta
8.0
Very Good
8,521 reviews
Check prices

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,341 reviews
Delta
8.0
Very Good
8,521 reviews
Check prices

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Virgin Atlantic
7.5
Good
665 reviews
Delta
8.0
Very Good
8,521 reviews
Check prices

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Aer Lingus
7.1
Good
1,079 reviews
Delta
8.0
Very Good
8,521 reviews
Check prices

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Food

7.3

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

  • What are the cheapest airlines flying from Southampton to Seattle round-trip?

    Currently priced at £495, KLM will fly you from Southampton to Seattle and back. In addition to KLM, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Delta for as low as £519.

  • Can I find deals for flights from Southampton to Seattle that include hotel bookings?

    Yes. In addition to deals on Southampton to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Southampton to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Southampton to Seattle.

  • Can I find deals for business class flights from Southampton to Seattle?

    Yes. Cheapflights offers flight deals from Southampton to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • 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.

See more FAQs

Travelling to a place near Southampton?

Book flights to Southampton if you plan to visit one of these locations
Tacoma
Leavenworth
Bothell

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Southampton to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Seattle flights
London City to Seattle flights
Gatwick to Seattle flights
Manchester to Seattle flights
Heathrow to Portland flights
Stansted to Seattle flights
Luton to Seattle flights
Gatwick to Portland flights
Newcastle upon Tyne to Seattle flights
London City to Portland flights
Bristol to Seattle flights
Bristol to Portland flights
Edinburgh to Seattle flights
Manchester to Portland flights
Birmingham to Seattle flights
Stansted to Portland flights
Luton to Portland flights
Edinburgh to Portland flights
Heathrow to Spokane flights
Birmingham to Spokane flights
Gatwick to Spokane flights
Leeds to Seattle flights
London City to Spokane flights
Newquay to Seattle flights
Manchester to Spokane flights
Heathrow to Pasco flights
Leeds to Portland flights
Birmingham to Portland flights
Southend to Seattle flights
Edinburgh to Pasco flights
Heathrow to Bellingham flights
Grimsby to Portland flights

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.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.