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Cheap flights from Washington to London from £647

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to London departing on 14/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Cheap return flights

Enter your travel dates to find the best prices.
Delta Logo
17:35 - 16:50
SEA
-
SOU
15h 15m
1 stop
Delta Logo
17:20 - 11:45
SOU
-
SEA
26h 25m
1 stop
£647Delta
화, 14 4월 - 목, 23 4월
Delta Logo
11:40 - 16:50
SEA
-
SOU
21h 10m
2 stops
Delta Logo
09:05 - 16:30
SOU
-
SEA
15h 25m
1 stop
£651Delta
화, 14 4월 - 수, 22 4월
Delta Logo
17:35 - 16:50
SEA
-
SOU
15h 15m
1 stop
Delta Logo
17:20 - 11:45
SOU
-
SEA
26h 25m
1 stop
£684Delta
화, 14 4월 - 토, 25 4월
Delta Logo
16:36 - 08:35
SEA
-
SOU
31h 59m
2 stops
Delta Logo
17:20 - 11:45
SOU
-
SEA
26h 25m
1 stop
£688Delta
수, 15 4월 - 토, 25 4월
Delta Logo
17:35 - 16:50
SEA
-
SOU
15h 15m
1 stop
Delta Logo
09:05 - 16:48
SOU
-
SEA
39h 43m
2 stops
£689Delta
화, 14 4월 - 월, 27 4월
Delta Logo
16:36 - 08:35
SEA
-
SOU
31h 59m
2 stops
Delta Logo
09:05 - 16:48
SOU
-
SEA
39h 43m
2 stops
£693Delta
수, 15 4월 - 월, 27 4월
Delta Logo
07:15 - 08:35
SEA
-
SOU
17h 20m
2 stops
Delta Logo
09:05 - 23:54
SOU
-
SEA
22h 49m
2 stops
£695Delta
목, 9 4월 - 목, 16 4월
Delta Logo
17:55 - 16:50
SEA
-
SOU
38h 55m
2 stops
Delta Logo
17:20 - 11:45
SOU
-
SEA
26h 25m
1 stop
£696Delta
토, 18 4월 - 일, 26 4월
Delta Logo
17:55 - 16:50
SEA
-
SOU
38h 55m
2 stops
Delta Logo
09:05 - 16:48
SOU
-
SEA
39h 43m
2 stops
£697Delta
토, 18 4월 - 월, 27 4월
Multiple Airlines Logo
19:10 - 08:05
SEA
-
SOU
28h 55m
1 stop
Multiple Airlines Logo
20:00 - 19:25
SOU
-
SEA
31h 25m
2 stops
£711Multiple Airlines
월, 6 4월 - 월, 13 4월

KLM flights from State of Washington to Southampton

Our best KLM deals on State of Washington to Southampton flight tickets
KLM
9 Apr
SEA13:45Seattle/Tacoma Intl
35h 00m
1 stop
SOU08:45Southampton Eastleigh
16 Apr
SOU09:05Southampton Eastleigh
15h 25m
1 stop
SEA16:30Seattle/Tacoma Intl
£719
KLM
21 Mar
SEA07:20Seattle/Tacoma Intl
18h 30m
2 stops
SOU08:50Southampton Eastleigh
28 Mar
SOU17:30Southampton Eastleigh
30h 00m
1 stop
SEA16:30Seattle/Tacoma Intl
£823
KLM
21 Mar
SEA16:05Seattle/Tacoma Intl
18h 10m
1 stop
SOU17:15Southampton Eastleigh
28 Mar
SOU17:30Southampton Eastleigh
30h 00m
1 stop
SEA16:30Seattle/Tacoma Intl
£894

Delta flights from State of Washington to Southampton

Our best Delta deals on State of Washington to Southampton flight tickets
Delta
14 Apr
SEA17:35Seattle/Tacoma Intl
15h 15m
1 stop
SOU16:50Southampton Eastleigh
23 Apr
SOU17:20Southampton Eastleigh
26h 25m
1 stop
SEA11:45Seattle/Tacoma Intl
£647
Delta
14 Apr
SEA11:40Seattle/Tacoma Intl
21h 10m
2 stops
SOU16:50Southampton Eastleigh
21 Apr
SOU09:05Southampton Eastleigh
15h 25m
1 stop
SEA16:30Seattle/Tacoma Intl
£651
Delta
14 Apr
SEA17:35Seattle/Tacoma Intl
15h 15m
1 stop
SOU16:50Southampton Eastleigh
25 Apr
SOU17:20Southampton Eastleigh
26h 25m
1 stop
SEA11:45Seattle/Tacoma Intl
£684

momondo Fare Finder

 
Customise your flight search to find flights from State of Washington 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, momondo users made 279,928 searches. Data last updated 24 2월 2026.
Use the filters below to find and compare flights from Washington to Southampton that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

화 14/4

17:35-16:50

1 stop15h 15m

Southampton Eastleigh

목 23/4

17:20-11:45

1 stop26h 25m

£647

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

화 14/4

11:40-16:50

2 stops21h 10m

Southampton Eastleigh

수 22/4

09:05-16:30

1 stop15h 25m

£651

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

화 14/4

17:35-16:50

1 stop15h 15m

Southampton Eastleigh

토 25/4

17:20-11:45

1 stop26h 25m

£684

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

수 15/4

16:36-08:35

2 stops31h 59m

Southampton Eastleigh

토 25/4

17:20-11:45

1 stop26h 25m

£688

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

화 14/4

17:35-16:50

1 stop15h 15m

Southampton Eastleigh

월 27/4

09:05-16:48

2 stops39h 43m

£689

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

수 15/4

16:36-08:35

2 stops31h 59m

Southampton Eastleigh

월 27/4

09:05-16:48

2 stops39h 43m

£693

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

목 9/4

07:15-08:35

2 stops17h 20m

Southampton Eastleigh

목 16/4

09:05-23:54

2 stops22h 49m

£695

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

토 18/4

17:55-16:50

2 stops38h 55m

Southampton Eastleigh

일 26/4

17:20-11:45

1 stop26h 25m

£696

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

토 18/4

17:55-16:50

2 stops38h 55m

Southampton Eastleigh

월 27/4

09:05-16:48

2 stops39h 43m

£697

SeattleSouthampton

SEA - SOU

SEASOU

Seattle/Tacoma Intl

월 6/4

19:10-08:05

1 stop28h 55m

Southampton Eastleigh

월 13/4

20:00-19:25

2 stops31h 25m

£711

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

See travel insights to London from

How to get the cheapest flight ticket from State of Washington to Southampton

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

How long does it take to fly to Southampton?

The average flight duration from State of Washington to Southampton depends on which airport you fly into and out of. Flying from Seattle to London Heathrow Airport is 9h 15m on average, while flying from Spokane to London Heathrow Airport is 12h 19m on average. London Heathrow Airport is the most popular airport in Southampton.

Cheap State of Washington to Southampton flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Southampton

Fastest flight time

13h 40m

Direct flights

None
The fastest flight from State of Washington to Southampton takes 13h 40m
There are no direct flights from State of Washington to Southampton. There are no popular flight routes from State of Washington to Southampton.
Search flight deals

  • When did momondo last update prices for flights from Washington to Southampton Eastleigh Airport?

    Prices for flights from Washington to Southampton Eastleigh Airport were last updated today.

  • How old do you have to be to fly from Washington to Southampton Eastleigh Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington to Southampton Eastleigh Airport.

  • What documentation or ID do you need to fly to Southampton Eastleigh Airport?

    The travel and health documents you'll need for your trip to Southampton Eastleigh Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Southampton Eastleigh Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Portsmouth

Why use momondo?

Why should I use momondo to find a flight deal from Washington to Southampton?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Southampton from Washington.

Can I find flights from Washington to Southampton with flexible booking policies on momondo?

All flight searches from Washington to Southampton on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Washington to Southampton?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Southampton from Washington.

I’m not ready to book a flight from Washington to Southampton right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Southampton from Washington. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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