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Cheap flights from London Southend Airport to Seattle from £443

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 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEN — SEA
21 Aug — 28 Aug1
1 adult

Cheap flight deals from Southend to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Southend (SEN) 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 16 August 2025.

Round-trip from

£945

One-way from

£443

Popular in

August

Cheapest in

January

Average price

£694
12/11-15/11
  • 12/11-15/11
  • 4 total stops
  • 39h 40m total
  • London to Seattle
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2/10
  • 2/10
  • 2 total stops
  • 48h 15m total
  • London to Seattle
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£60 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
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Average for round-trip flights in August 2025
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Find flight deals from Southend to Seattle

Cheapest flights from Southend to Seattle
Explore the most affordable flight options available from Southend to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 August 2025.

Wed 12/1107:10SEN - SEA
2 stops17h 50mMultiple Airlines
Sat 15/1115:20SEA - SEN
2 stops21h 50mMultiple Airlines
Deal found 15/8£945
Thu 11/917:40SEN - SEA
2 stops33h 41mMultiple Airlines
Thu 18/913:50SEA - SEN
2 stops17h 55mMultiple Airlines
Deal found 14/8£1,208
Sun 28/915:35SEN - SEA
2 stops51h 00mMultiple Airlines
Sun 5/1013:30SEA - SEN
1 stop12h 55mMultiple Airlines
Deal found 14/8£1,244
Fri 5/916:55SEN - SEA
2 stops30h 20mMultiple Airlines
Sun 14/913:30SEA - SEN
1 stop12h 55mMultiple Airlines
Deal found 15/8£1,257
Fri 15/811:05SEN - SEA
2 stops17h 35mMultiple Airlines
Wed 3/919:00SEA - SEN
2 stops17h 50mMultiple Airlines
Deal found 14/8£1,673

Cheapflights Fare Finder

 
Customise your flight search to find flights from Southend 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 858,174 searches. Data last updated 16 August 2025.
Use the filters below to find and compare flights from London Southend Airport to Seattle that are best for you.

Fly from

Southend

Fly to

Seattle

Route

Depart

Return

Price

LondonSeattle

SEN - SEA

SENSEA

London Southend

Wed 12/11

07:10-17:00

2 stops17h 50m

Seattle/Tacoma Intl

Sat 15/11

15:20-21:10

2 stops21h 50m

£945

LondonSeattle

SEN - SEA

SENSEA

London Southend

Thu 11/9

17:40-19:21

2 stops33h 41m

Seattle/Tacoma Intl

Thu 18/9

13:50-15:45

2 stops17h 55m

£1,208

LondonSeattle

SEN - SEA

SENSEA

London Southend

Sun 28/9

15:35-10:35

2 stops51h 00m

Seattle/Tacoma Intl

Sun 5/10

13:30-10:25

1 stop12h 55m

£1,244

LondonSeattle

SEN - SEA

SENSEA

London Southend

Fri 5/9

16:55-15:15

2 stops30h 20m

Seattle/Tacoma Intl

Sun 14/9

13:30-10:25

1 stop12h 55m

£1,257

LondonSeattle

SEN - SEA

SENSEA

London Southend

Thu 2/10

17:40-09:55

2 stops48h 15m

£443

LondonSeattle

SEN - SEA

SENSEA

London Southend

Sun 28/12

18:05-07:07

3 stops45h 02m

£472

LondonSeattle

SEN - SEA

SENSEA

London Southend

Thu 23/10

17:40-19:08

2 stops33h 28m

£477

LondonSeattle

SEN - SEA

SENSEA

London Southend

Mon 29/12

07:15-07:07

3 stops31h 52m

£482

LondonSeattle

SEN - SEA

SENSEA

London Southend

Sun 30/11

15:15-23:43

3 stops40h 28m

£499

LondonSeattle

SEN - SEA

SENSEA

London Southend

Mon 15/9

11:05-10:35

2 stops31h 30m

£523

Flights are sorted by cheapest return flights first.

Deals found on 15/8

Showing 1-10 of 12 results
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Best time to book a flight from Southend to Seattle

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

Related info for your journey

Find useful and relevant information for your journey from Southend to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Seattle from London Southend?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly into when you book flights from London Southend to Seattle. 0 airlines have flights to Seattle/Tacoma Intl from London Southend on a regular basis. Booking flights from London Southend to Seattle/Tacoma Intl should not be difficult; the airport handles an average of 0 inbound flights from London Southend per day.

  • Can I find deals for flights from Southend to Seattle that include hotel bookings?

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

  • How can I find direct flights from Southend to Seattle?

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

  • Can I find deals for business class flights from Southend to Seattle?

    Yes. Cheapflights offers flight deals from Southend 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 London Southend Airport to Seattle?

    Currently, January is the cheapest month in which you can book a flight from London Southend Airport to Seattle (average of £622). Flying from London Southend Airport to Seattle in July is currently the most expensive (average of £946). 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

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
Bothell
SeaTac

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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 Seattle from Southend.

Can Cheapflights find flights from Southend to Seattle with no change fees?

Need flexible booking options for your flight to Seattle from Southend? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Southend to Seattle become cheaper?

Not ready to book yet? You can track prices for flights from Southend to Seattle on Cheapflights with our Price Alert feature and get notified when better prices are available.

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