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. This flight may include one or multiple stops.

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.

£515+ Cheap Flights from Southampton to Washington

Cheap flight deals from Southampton to Washington

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 20 August 2026.

Tue 29/909:05 -

1 stop15h 30m

Tue 6/1013:45 -

1 stop34h 50m

Deal found 15/8£650

Thu 1/1017:20 -

1 stop31h 15m

Thu 8/1013:45 -

1 stop35h 00m

Deal found 17/8£651

Thu 1/1009:05 -

2 stops22h 50m

Thu 8/1017:45 -

1 stop15h 05m

Deal found 17/8£671

Sat 3/1017:20 -

1 stop31h 15m

Sat 10/1007:45 -

2 stops17h 00m

Deal found 19/8£680

Sat 3/1009:15 -

2 stops20h 48m

Sat 10/1007:45 -

2 stops17h 00m

Deal found 19/8£684

Fri 2/1009:20 -

1 stop15h 50m

Fri 9/1019:10 -

1 stop13h 40m

Deal found 18/8£696

Fri 2/1009:05 -

1 stop15h 30m

Fri 9/1022:59 -

2 stops25h 46m

Deal found 18/8£721

Mon 5/1009:20 -

1 stop15h 50m

Wed 21/1019:10 -

1 stop13h 40m

Deal found 19/8£762

Find flight deals from Southampton to Washington

Round-trip from	£651
One-way from	£515
Popular in	August
Cheapest in	February
Average price	£627

KLM
1/10-8/10
2 total stops
66h 15m total
Southampton to Washington

Search Deals

British Airways
28/12
2 total stops
36h 35m total
Southampton to Washington

Search Deals

Highest demand for flights based on searches. 6% potential increase in price (£26 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 August 2026

Search Deals

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

Tue 29/9

09:05-11:47

1 stop34h 42m

Seattle/Tacoma Intl

Tue 6/10

09:36-08:45

2 stops15h 09m

£652

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Thu 1/10

09:05-23:55

2 stops22h 50m

Seattle/Tacoma Intl

Thu 8/10

17:45-16:50

1 stop15h 05m

£671

Fastest return journey

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Fri 2/10

09:20-17:10

1 stop15h 50m

Seattle/Tacoma Intl

Fri 9/10

19:10-16:50

1 stop13h 40m

£696

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Tue 6/10

09:15-17:10

1 stop15h 55m

Seattle/Tacoma Intl

Wed 21/10

19:10-16:50

1 stop13h 40m

£762

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

£762

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Wed 30/9

09:20-17:10

1 stop15h 50m

Seattle/Tacoma Intl

Sun 4/10

19:10-19:30

1 stop16h 20m

£793

Cheapest one-way

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Sat 26/12

19:55-16:50

2 stops28h 55m

£516

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Sun 27/12

20:50-16:50

2 stops28h 00m

£516

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Thu 17/9

17:20-17:10

1 stop31h 50m

£812

SouthamptonSeattle

SOU Southampton Eastleigh - SEA Seattle/Tacoma Intl

SOUSEA

Southampton Eastleigh

Wed 30/12

06:50-16:50

2 stops42h 00m

£831

Flights are sorted by cheapest return flights first.

Deals found on 18/8

Showing 1-10 of 15 resultsSorted 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. This flight may include one or multiple stops.
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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How does Cheapflights help users find flights from Southampton to Washington?

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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 £515

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 28/12. 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 20 August 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 20 August 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 20 August 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 20 August 2026.

Last-minute flights from Southampton to WashingtonDiscover last-minute flight deals from Southampton to Washington. Data last updated 20 August 2026 and is based on user searches.

Discover last-minute flight deals from Southampton to Washington. Data last updated 20 August 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 20 August 2026.

Search for one-way flight options from Southampton to Washington. Find affordable one-way fares based on user searches. Data last updated 20 August 2026.

Find flight deals from Southampton to Washington

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

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.

Cheapflights Insights

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

Browse other Southampton and Washington flight options. Last updated on 20 August 2026.

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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 20 August 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 20 August 2026.

Last-minute flights from Southampton to Washington
Discover last-minute flight deals from Southampton to Washington. Data last updated 20 August 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 20 August 2026.