$663+ Cheap flights from Seattle (SEA) to Southampton (SOU)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SOU
Oct 11 — Oct 181
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Southampton with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Southampton
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Best
Last-minute
One-way
Cheapest flights from Seattle to SouthamptonExplore the most affordable flight options available from Seattle to Southampton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2026.
Explore the most affordable flight options available from Seattle to Southampton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2026.
This Mytrip deal was found by Cheapflights users on 9/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/610:50 am -
2 stops24h 40m
Mon 10/128:00 pm -
3 stops30h 32m
Deal found 9/7![Multiple Airlines logo]()
$986
This Cheapflightsfares deal was found by Cheapflights users on 9/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2310:31 am -
2 stops24h 59m
Fri 10/309:20 am -
2 stops22h 15m
Deal found 9/8![Aer Lingus logo]()
$1,031
This Delta deal was found by Cheapflights users on 9/7. 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.
Tue 10/65:45 pm -
1 stop15h 05m
Mon 10/129:05 am -
1 stop15h 30m
Deal found 9/7![Delta logo]()
$1,143
This Delta deal was found by Cheapflights users on 9/6. 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.
Mon 12/142:35 pm -
1 stop33h 35m
Mon 1/48:40 am -
2 stops47h 29m
Deal found 9/6![Delta logo]()
$1,170
This Delta deal was found by Cheapflights users on 9/6. 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.
Tue 9/291:50 pm -
1 stop19h 00m
Tue 10/65:20 pm -
1 stop26h 32m
Deal found 9/6![Delta logo]()
$1,183
This Delta deal was found by Cheapflights users on 9/7. 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.
Sun 10/41:45 pm -
1 stop19h 05m
Tue 10/209:05 am -
1 stop15h 30m
Deal found 9/7![Delta logo]()
$1,184
This Delta deal was found by Cheapflights users on 9/6. 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.
Tue 9/2911:59 pm -
2 stops24h 36m
Fri 10/99:05 am -
1 stop15h 30m
Deal found 9/6![Delta logo]()
$1,187
Best flights from Seattle to SouthamptonDiscover carefully curated flight deals from Seattle to Southampton that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.
Discover carefully curated flight deals from Seattle to Southampton that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 9/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2310:31 am -
2 stops24h 59m
Fri 10/309:20 am -
2 stops22h 15m
Deal found 9/8![Aer Lingus logo]()
$1,031
This Delta deal was found by Cheapflights users on 9/7. 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.
Tue 10/65:45 pm -
1 stop15h 05m
Mon 10/129:05 am -
1 stop15h 30m
Deal found 9/7![Delta logo]()
$1,143
This KLM deal was found by Cheapflights users on 9/8. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/231:45 pm -
1 stop19h 05m
Fri 10/305:35 pm -
1 stop26h 12m
Deal found 9/8![KLM logo]()
$1,193
This Mytrip deal was found by Cheapflights users on 9/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/235:50 am -
3 stops24h 35m
Fri 10/3012:25 pm -
2 stops31h 00m
Deal found 9/8![Multiple Airlines logo]()
$1,277
This Delta deal was found by Cheapflights users on 9/6. 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.
Tue 9/299:59 am -
2 stops22h 51m
Thu 10/85:20 pm -
1 stop26h 32m
Deal found 9/6![Delta logo]()
$1,187
This Delta deal was found by Cheapflights users on 9/6. 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.
Wed 9/306:00 am -
2 stops18h 35m
Mon 10/55:20 pm -
1 stop31h 15m
Deal found 9/6![Delta logo]()
$1,187
This Delta deal was found by Cheapflights users on 9/7. 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.
Sun 10/46:00 am -
2 stops18h 35m
Tue 10/209:05 am -
2 stops19h 45m
Deal found 9/7![Delta logo]()
$1,189
This Delta deal was found by Cheapflights users on 9/6. 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.
Thu 10/11:45 pm -
1 stop35h 00m
Mon 10/55:20 pm -
1 stop31h 15m
Deal found 9/6![Delta logo]()
$1,233
This Delta deal was found by Cheapflights users on 9/6. 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.
Sat 10/311:59 pm -
2 stops24h 36m
Fri 10/235:20 pm -
1 stop26h 32m
Deal found 9/6![Delta logo]()
$1,237
This Delta deal was found by Cheapflights users on 9/6. 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.
Sat 10/32:30 pm -
2 stops18h 20m
Thu 10/229:05 am -
2 stops21h 44m
Deal found 9/6![Delta logo]()
$1,247
This Delta deal was found by Cheapflights users on 9/6. 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.
Fri 10/25:45 pm -
1 stop15h 05m
Sat 10/249:20 am -
1 stop15h 15m
Deal found 9/6![Delta logo]()
$1,410
Last-minute flights from Seattle to SouthamptonDiscover last-minute flight deals from Seattle to Southampton. Data last updated September 11, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Southampton. Data last updated September 11, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 9/6. 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.
Tue 9/291:50 pm -
1 stop19h 00m
Tue 10/65:20 pm -
1 stop26h 32m
Deal found 9/6![Delta logo]()
$1,183
This Delta deal was found by Cheapflights users on 9/6. 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.
Tue 9/2911:59 pm -
2 stops24h 36m
Fri 10/99:05 am -
1 stop15h 30m
Deal found 9/6![Delta logo]()
$1,187
This Delta deal was found by Cheapflights users on 9/7. 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.
Sun 10/41:45 pm -
1 stop19h 05m
Tue 10/209:05 am -
1 stop15h 30m
Deal found 9/7![Delta logo]()
$1,184
This Mytrip deal was found by Cheapflights users on 9/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/610:50 am -
2 stops24h 40m
Mon 10/128:00 pm -
3 stops30h 32m
Deal found 9/7![Multiple Airlines logo]()
$986
This Delta deal was found by Cheapflights users on 9/7. 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.
Tue 10/65:45 pm -
1 stop15h 05m
Mon 10/129:05 am -
1 stop15h 30m
Deal found 9/7![Delta logo]()
$1,143
This Cheapflightsfares deal was found by Cheapflights users on 9/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2310:31 am -
2 stops24h 59m
Fri 10/309:20 am -
2 stops22h 15m
Deal found 9/8![Aer Lingus logo]()
$1,031
This KLM deal was found by Cheapflights users on 9/8. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/231:45 pm -
1 stop19h 05m
Fri 10/305:35 pm -
1 stop26h 12m
Deal found 9/8![KLM logo]()
$1,193
One-way flights from Seattle to SouthamptonSearch for one-way flight options from Seattle to Southampton. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.
Search for one-way flight options from Seattle to Southampton. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.
This Delta deal was found by Cheapflights users on 9/6. 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.
Tue 9/295:45 pm -
1 stop30h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Delta logo]()
$663
This Delta deal was found by Cheapflights users on 9/6. 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.
Thu 10/15:45 pm -
1 stop31h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Delta logo]()
$713
This Delta deal was found by Cheapflights users on 9/6. 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.
Wed 9/301:50 pm -
1 stop19h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Delta logo]()
$729
This KAYAK deal was found by Cheapflights users on 9/7. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/17:10 pm -
1 stop29h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Aer Lingus logo]()
$783
This Delta deal was found by Cheapflights users on 9/10. 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.
Sat 12/197:55 pm -
2 stops52h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Delta logo]()
$955
This Delta deal was found by Cheapflights users on 9/10. 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.
Fri 12/187:38 am -
2 stops25h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Delta logo]()
$1,010
Find flight deals from Seattle to Southampton
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Southampton (SOU). 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 September 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $986 (Mytrip) |
One-way from | $663 (Delta) |
Popular in | June |
Cheapest in | January |
Average price | $908 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Southampton 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 7,457,451 searches. Data last updated September 11, 2026.
Use the filters below to find and compare flights from Seattle to Southampton that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleSouthampton
SEA Seattle/Tacoma Intl - SOU Southampton Eastleigh
SEASOU
Seattle/Tacoma Intl
Tue 9/29
5:45 pm-8:35 am
1 stop30h 50m
Southampton Eastleigh
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$663
SeattleSouthampton
SEA Seattle/Tacoma Intl - SOU Southampton Eastleigh
SEASOU
Seattle/Tacoma Intl
Sat 10/3
11:59 pm-8:35 am
2 stops24h 36m
Southampton Eastleigh
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$667
SeattleSouthampton
SEA Seattle/Tacoma Intl - SOU Southampton Eastleigh
SEASOU
Seattle/Tacoma Intl
Thu 10/1
5:45 pm-8:45 am
1 stop31h 00m
Southampton Eastleigh
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$713
SeattleSouthampton
SEA Seattle/Tacoma Intl - SOU Southampton Eastleigh
SEASOU
Seattle/Tacoma Intl
Fri 12/18
7:38 am-5:00 pm
2 stops25h 22m
Southampton Eastleigh
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$1,010
SeattleSouthampton
SEA Seattle/Tacoma Intl - SOU Southampton Eastleigh
SEASOU
Seattle/Tacoma Intl
Fri 10/23
10:31 am-7:30 pm
2 stops24h 59m
Southampton Eastleigh
Fri 10/30
9:20 am-12:35 am
2 stops22h 15m
$1,031
SeattleSouthampton
SEA Seattle/Tacoma Intl - SOU Southampton Eastleigh
SEASOU
Seattle/Tacoma Intl
Tue 10/6
5:45 pm-4:50 pm
1 stop15h 05m
Southampton Eastleigh
Mon 10/12
9:05 am-4:35 pm
1 stop15h 30m
$1,143
SeattleSouthampton
SEA Seattle/Tacoma Intl - SOU Southampton Eastleigh
SEASOU
Seattle/Tacoma Intl
Tue 9/29
9:59 am-4:50 pm
2 stops22h 51m
Southampton Eastleigh
Thu 10/8
5:20 pm-11:52 am
1 stop26h 32m
$1,187
SeattleSouthampton
SEA Seattle/Tacoma Intl - SOU Southampton Eastleigh
SEASOU
Seattle/Tacoma Intl
Wed 9/30
6:00 am-8:35 am
2 stops18h 35m
Southampton Eastleigh
Mon 10/5
5:20 pm-4:35 pm
1 stop31h 15m
$1,187
SeattleSouthampton
SEA Seattle/Tacoma Intl - SOU Southampton Eastleigh
SEASOU
Seattle/Tacoma Intl
Sun 10/4
6:00 am-8:35 am
2 stops18h 35m
Southampton Eastleigh
Tue 10/20
9:05 am-8:50 pm
2 stops19h 45m
$1,189
SeattleSouthampton
SEA Seattle/Tacoma Intl - SOU Southampton Eastleigh
SEASOU
Seattle/Tacoma Intl
Fri 10/23
1:45 pm-4:50 pm
1 stop19h 05m
Southampton Eastleigh
Fri 10/30
5:35 pm-12:47 pm
1 stop26h 12m
$1,193
Showing 1-10 of 16 resultsSorted by cheapest first
Compare providers for flights from Seattle to Southampton
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Southampton in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-Southampton flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Southampton flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Southampton flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Southampton flights, Cheapflights users trust FlightHub the most. FlightHub 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 Seattle-Southampton 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 Seattle to Southampton
Have a flexible travel schedule? Discover the best time to fly to Southampton from Seattle with our price prediction graph.
SEA-SOU
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.
Related info for your journey
Find useful and relevant information for your journey from Seattle to Southampton. 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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