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$631+ Cheap flights from Southampton (SOU) to Seattle (SEA)

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 3/23. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — SEA
ene. 11 — ene. 181
dom. 1/11
dom. 1/18
1 adult, Economy
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Cheap flight deals from Southampton to Seattle

Best flights from Southampton to Seattle
Discover carefully curated flight deals from Southampton to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated diciembre 12, 2025.

This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 3/285:30 pmSOU - SEA
2 stops35h 20mDelta
mié. 4/87:20 amSEA - SOU
2 stops17h 15mDelta
Deal found 12/10$780
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 3/285:30 pmSOU - SEA
2 stops35h 20mDelta
vie. 4/1011:59 pmSEA - SOU
2 stops24h 46mDelta
Deal found 12/10$780
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/315:20 pmSOU - SEA
1 stop30h 30mDelta
jue. 4/911:12 pmSEA - SOU
2 stops25h 33mDelta
Deal found 12/10$782
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/305:20 pmSOU - SEA
1 stop26h 15mDelta
jue. 4/92:05 pmSEA - SOU
1 stop34h 40mDelta
Deal found 12/10$782
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/268:50 amSOU - SEA
1 stop34h 45mDelta
vie. 4/106:00 amSEA - SOU
2 stops18h 45mDelta
Deal found 12/10$782
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/295:20 pmSOU - SEA
1 stop30h 30mDelta
vie. 4/102:05 pmSEA - SOU
1 stop34h 40mDelta
Deal found 12/10$782
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/315:20 pmSOU - SEA
1 stop30h 30mDelta
mié. 4/87:15 amSEA - SOU
2 stops17h 20mDelta
Deal found 12/10$782
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/268:50 amSOU - SEA
1 stop34h 45mDelta
mié. 4/86:00 amSEA - SOU
2 stops18h 35mDelta
Deal found 12/10$782
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/315:20 pmSOU - SEA
1 stop30h 30mDelta
vie. 4/102:05 pmSEA - SOU
1 stop34h 40mDelta
Deal found 12/10$782
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/309:05 amSOU - SEA
1 stop14h 45mDelta
mié. 4/85:35 pmSEA - SOU
1 stop15h 15mDelta
Deal found 12/10$782
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/309:05 amSOU - SEA
1 stop14h 45mDelta
vie. 4/107:23 amSEA - SOU
2 stops17h 22mDelta
Deal found 12/10$782

Find 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 diciembre 12, 2025.

Most accurate provider

Expedia
2 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$780
(Delta)

One-way from

$631
(Gurufare)

Popular in

July

Cheapest in

January

Average price

$853
Provider with most accurate pricing for Southampton Eastleigh-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Southampton Eastleigh-Seattle/Tacoma Intl flights.
Search Deals
From Southampton Eastleigh to Seattle/Tacoma Intl
Search Deals
One-way flight from Southampton Eastleigh to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($106 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated diciembre 12, 2025.
Use the filters below to find and compare flights from Southampton to Seattle that are best for you.

Fly from

Southampton

Fly to

Seattle

Route

Depart

Return

Price

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

sáb. 3/28

5:30 pm-9:50 pm

2 stops35h 20m

Seattle/Tacoma Intl

mié. 4/8

7:20 am-8:35 am

2 stops17h 15m

$780

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

sáb. 3/28

5:30 pm-9:50 pm

2 stops35h 20m

Seattle/Tacoma Intl

vie. 4/10

11:59 pm-8:45 am

2 stops24h 46m

$780

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

mar. 3/31

5:20 pm-3:50 pm

1 stop30h 30m

Seattle/Tacoma Intl

jue. 4/9

11:12 pm-8:45 am

2 stops25h 33m

$782

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

lun. 3/30

5:20 pm-11:35 am

1 stop26h 15m

Seattle/Tacoma Intl

jue. 4/9

2:05 pm-8:45 am

1 stop34h 40m

$782

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

jue. 3/26

8:50 am-12:35 pm

1 stop34h 45m

Seattle/Tacoma Intl

vie. 4/10

6:00 am-8:45 am

2 stops18h 45m

$782

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

dom. 3/29

5:20 pm-3:50 pm

1 stop30h 30m

Seattle/Tacoma Intl

vie. 4/10

2:05 pm-8:45 am

1 stop34h 40m

$782

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

mar. 3/31

5:20 pm-3:50 pm

1 stop30h 30m

Seattle/Tacoma Intl

mié. 4/8

7:15 am-8:35 am

2 stops17h 20m

$782

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

jue. 3/26

8:50 am-12:35 pm

1 stop34h 45m

Seattle/Tacoma Intl

mié. 4/8

6:00 am-8:35 am

2 stops18h 35m

$782

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

mar. 3/31

5:20 pm-3:50 pm

1 stop30h 30m

Seattle/Tacoma Intl

vie. 4/10

2:05 pm-8:45 am

1 stop34h 40m

$782

SouthamptonSeattle

SOU - SEA

SOUSEA

Southampton Eastleigh

lun. 3/30

9:05 am-3:50 pm

1 stop14h 45m

Seattle/Tacoma Intl

mié. 4/8

5:35 pm-4:50 pm

1 stop15h 15m

$782

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 13 results
1
2
  • Most accurate provider: When it comes to deals on Southampton-Seattle flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Southampton-Seattle flight deals on Cheapflights vs. Expedia 90-95% of the time. Price accuracy is based on data collected from Southampton-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Southampton-Seattle flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Southampton-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 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 Southampton to Seattle

What is the cheapest month to book a flight from Southampton to Seattle?

Currently, March is the cheapest month in which you can book a flight from Southampton to Seattle (average of $408). Flying from Southampton to Seattle in August is currently the most expensive (average of $617). 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.

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.

  • How long is the flight from Southampton to Seattle?

    Delta can get you from Southampton to Seattle in just under 35h 20m. Your travel time can differ by up to . The distance between Southampton and Seattle is about 4787 mi.

  • 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 vacation 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, March is the cheapest month in which you can book a flight from Southampton to Seattle (average of $408). Flying from Southampton to Seattle in August is currently the most expensive (average of $617). 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

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
SeaTac
Lakewood
Olympia
Ocean Shores
Edmonds
Lynnwood
Renton
Puyallup
Kirkland
Tukwila
Kent
Cle Elum
Marysville
Leavenworth
Fife
Aberdeen
Shoreline
Centralia
Federal Way

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