How long is the flight from Southampton to State of Washington?

Departing from Southampton to State of Washington will take you 15h 50m. The distance from Southampton to State of Washington is about 4787 mi.

In terms of precipitation, rainfall in State of Washington 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 State of Washington when rainfall is around 18.0 mm.

If weather is an important factor for your trip to State of Washington, 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).

What is the cheapest time of day to fly from SOU to WA?

When flying from Southampton to State of Washington, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly from for flights from Southampton to Washington?

Southampton Eastleigh (SOU) is the airport you will fly out of if you book a flight from Southampton to Washington. It is only a 3.5 mi journey to Eastleigh (SOU) from Southampton’s city center.

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

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

How can I find direct flights from Southampton to Washington?

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

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

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

£441+ Cheap Flights from Southampton to Washington

Cheap flight deals from Southampton to Washington

Enter your travel dates to find the best prices.

Cheapest

Best

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Cheapest flights from Southampton to Washington
Explore the most affordable flight options available from Southampton to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 September 2026.

Mon 5/1009:20 -

1 stop15h 50m

Wed 21/1019:10 -

1 stop13h 40m

Deal found 10/9£514

Wed 14/1009:20 -

1 stop15h 50m

Sun 18/1019:10 -

1 stop13h 40m

Deal found 11/9£543

Mon 5/1009:05 -

1 stop15h 30m

Wed 21/1013:30 -

2 stops19h 20m

Deal found 12/9£558

Thu 29/1017:35 -

1 stop26h 12m

Thu 5/1114:35 -

1 stop34h 20m

Deal found 14/9£599

Find flight deals from Southampton to Washington

Round-trip from	£514
One-way from	£441
Popular in	August
Cheapest in	February
Average price	£546

British Airways
5/10-21/10
2 total stops
29h 30m total
Southampton to Washington

Search Deals

7/10-31/12
3 total stops
41h 55m total
Southampton to Washington

Search Deals

Highest demand for flights based on searches. 6% potential increase in price (£28 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (£6 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

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Cheapflights Fare Finder

Use the filters below to find and compare flights from Southampton to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Sun 27/12

20:50-16:50

2 stops28h 00m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£506

Fastest return journey

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Mon 9/11

19:55-11:25

2 stops23h 30m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£508

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Mon 5/10

09:20-17:10

1 stop15h 50m

Seattle/Tacoma Intl

Wed 21/10

19:10-16:50

1 stop13h 40m

£514

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Mon 28/12

06:50-11:25

2 stops36h 35m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£517

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Sat 26/12

19:55-16:50

2 stops28h 55m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£519

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Wed 14/10

09:20-17:10

1 stop15h 50m

Seattle/Tacoma Intl

Sun 18/10

19:10-16:50

1 stop13h 40m

£543

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Mon 5/10

09:05-16:35

1 stop15h 30m

Seattle/Tacoma Intl

Wed 21/10

13:30-16:50

2 stops19h 20m

£558

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Thu 29/10

17:35-12:47

1 stop26h 12m

Seattle/Tacoma Intl

Thu 5/11

14:35-08:55

1 stop34h 20m

£599

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Wed 7/10

20:00-17:10

1 stop29h 10m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£605

Flights are sorted by cheapest return flights first.

Deals found on 9/9

Sorted by cheapest first

Best time to book a flight from Southampton to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Southampton with our price prediction graph.

SOU-SEA

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.

Cheapflights Insights

Everything you need to know about your flight from Southampton to Washington

SOU-USWA

SOU-SEA

No data available for this route at this time. Please check back soon.

Related info for your journey

What airport do you fly from for flights from Southampton to Washington?
Southampton Eastleigh (SOU) is the airport you will fly out of if you book a flight from Southampton to Washington. It is only a 3.5 mi journey to Eastleigh (SOU) from Southampton’s city center.
How long is the flight from Southampton to State of Washington?
Departing from Southampton to State of Washington will take you 15h 50m. The distance from Southampton to State of Washington is about 4787 mi.
Can I find deals for flights from Southampton to Washington that include hotel bookings?
Yes. In addition to deals on Southampton to Washington flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Southampton to Washington?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Southampton to Washington.
Can I find deals for business class flights from Southampton to Washington?
Yes. Cheapflights offers flight deals from Southampton to Washington by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Why should you use Cheapflights to find cheap flight tickets from Southampton to Washington?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Washington from Southampton.

Can Cheapflights find flights from Southampton to Washington with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Southampton to Washington, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Southampton to Washington become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Washington from Southampton today and book when prices fit your budget.

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Cheap flights from Southampton to Washington from £441

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Southampton to Washington

Cheapest flights from Southampton to WashingtonExplore the most affordable flight options available from Southampton to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 September 2026.

Explore the most affordable flight options available from Southampton to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 September 2026.

Best flights from Southampton to WashingtonDiscover carefully curated flight deals from Southampton to Washington that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 September 2026.

Discover carefully curated flight deals from Southampton to Washington that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 September 2026.

Last-minute flights from Southampton to WashingtonDiscover last-minute flight deals from Southampton to Washington. Data last updated 14 September 2026 and is based on user searches.

Discover last-minute flight deals from Southampton to Washington. Data last updated 14 September 2026 and is based on user searches.

One-way flights from Southampton to WashingtonSearch for one-way flight options from Southampton to Washington. Find affordable one-way fares based on user searches. Data last updated 14 September 2026.

Search for one-way flight options from Southampton to Washington. Find affordable one-way fares based on user searches. Data last updated 14 September 2026.

Find flight deals from Southampton to Washington

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Best time to book a flight from Southampton to Washington

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Related info for your journey

What airport do you fly from for flights from Southampton to Washington?

How long is the flight from Southampton to State of Washington?

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

How can I find direct flights from Southampton to Washington?

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Southampton to Washington

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Complete your trip

Complete your trip to Washington by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to United States

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Search flights from Southampton to Washington by cabin class

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Southampton and Washington flights

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Cheapest flights from Southampton to Washington
Explore the most affordable flight options available from Southampton to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 September 2026.

Best flights from Southampton to Washington
Discover carefully curated flight deals from Southampton to Washington that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 September 2026.

Last-minute flights from Southampton to Washington
Discover last-minute flight deals from Southampton to Washington. Data last updated 14 September 2026 and is based on user searches.

One-way flights from Southampton to Washington
Search for one-way flight options from Southampton to Washington. Find affordable one-way fares based on user searches. Data last updated 14 September 2026.