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Cheap flights from London Southend Airport to Seattle from £439

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 7/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEN — SEA
23 Nov — 30 Nov1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Southend to Seattle

Enter your travel dates to find the best prices.

One-way flights from Southend to Seattle
Search for one-way flight options from Southend to Seattle. Find affordable one-way fares based on user searches. Data last updated 24 October 2025.

Fri 7/1110:00SEN - SEA
2 stops32h 40mMultiple Airlines
Deal found 23/10£439
Tue 16/1220:20SEN - SEA
3 stops30h 00mMultiple Airlines
Deal found 22/10£460
Mon 24/1107:20SEN - SEA
2 stops16h 20mMultiple Airlines
Deal found 23/10£475
Sun 7/1215:15SEN - SEA
2 stops51h 20mMultiple Airlines
Deal found 22/10£502
Tue 6/115:55SEN - SEA
2 stops57h 10mMultiple Airlines
Deal found 22/10£578
Mon 5/107:20SEN - SEA
3 stops41h 45mMultiple Airlines
Deal found 22/10£628
Tue 9/1207:35SEN - SEA
2 stops17h 25mMultiple Airlines
Deal found 23/10£631
Sun 28/1218:05SEN - SEA
2 stops31h 00mMultiple Airlines
Deal found 22/10£634
Tue 4/1107:35SEN - SEA
2 stops17h 25mMultiple Airlines
Deal found 23/10£636
Fri 26/1206:40SEN - SEA
2 stops18h 20mMultiple Airlines
Deal found 23/10£640
Fri 31/1008:00SEN - SEA
3 stops41h 05mMultiple Airlines
Deal found 23/10£671

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 24 October 2025.

Popular in

July

Cheapest in

January

Average price

£544
Highest demand for flights based on searches. 12% potential increase in price (£59 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
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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 24 October 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

Fri 7/11

10:00-10:40

2 stops32h 40m

£439

LondonSeattle

SEN - SEA

SENSEA

London Southend

Tue 16/12

20:20-18:20

3 stops30h 00m

£460

LondonSeattle

SEN - SEA

SENSEA

London Southend

Mon 24/11

07:20-15:40

2 stops16h 20m

£475

LondonSeattle

SEN - SEA

SENSEA

London Southend

Sun 7/12

15:15-10:35

2 stops51h 20m

£502

LondonSeattle

SEN - SEA

SENSEA

London Southend

Tue 6/1

15:55-17:05

2 stops57h 10m

£578

LondonSeattle

SEN - SEA

SENSEA

London Southend

Mon 5/1

07:20-17:05

3 stops41h 45m

£628

LondonSeattle

SEN - SEA

SENSEA

London Southend

Tue 9/12

07:35-17:00

2 stops17h 25m

£631

LondonSeattle

SEN - SEA

SENSEA

London Southend

Sun 28/12

18:05-17:05

2 stops31h 00m

£634

LondonSeattle

SEN - SEA

SENSEA

London Southend

Tue 4/11

07:35-17:00

2 stops17h 25m

£636

LondonSeattle

SEN - SEA

SENSEA

London Southend

Fri 26/12

06:40-17:00

2 stops18h 20m

£640

Flights are sorted by cheapest return flights first.

Deals found on 23/10

Showing 1-10 of 11 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.

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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When you search for this flight from Southend to Seattle, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Southend to Seattle?

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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