HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Southend

$376+ Cheap flights from Seattle (SEA) to Southend (SEN)

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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SEN
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Southend with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Seattle to Southend

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Southend (SEN). 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 October 28, 2025.

Most accurate provider

Expedia
2 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$650
(Mytrip)

One-way from

$376
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$663
Provider with most accurate pricing for Seattle/Tacoma Intl-London Southend flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-London Southend flights.
Search Deals
From Seattle/Tacoma Intl to London Southend
Search Deals
One-way flight from Seattle/Tacoma Intl to London Southend
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($134 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Find flight deals from Seattle to Southend

Cheapest flights from Seattle to Southend
Explore the most affordable flight options available from Seattle to Southend. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.

This Mytrip deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/32:35 pmSEA - SEN
2 stops18h 40mMultiple Airlines
Tue 12/97:35 amSEN - SEA
2 stops17h 25mMultiple Airlines
Deal found 10/27$650
This Mytrip deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/32:35 pmSEA - SEN
2 stops22h 25mMultiple Airlines
Mon 12/87:15 amSEN - SEA
2 stops17h 45mMultiple Airlines
Deal found 10/26$671
This Mytrip deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/192:35 pmSEA - SEN
2 stops18h 40mMultiple Airlines
Sun 11/234:50 pmSEN - SEA
2 stops32h 10mMultiple Airlines
Deal found 10/26$757
This Mytrip deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/235:50 amSEA - SEN
3 stops20h 40mMultiple Airlines
Sun 11/306:05 pmSEN - SEA
2 stops26h 05mMultiple Airlines
Deal found 10/26$813
This Mytrip deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/278:10 amSEA - SEN
3 stops20h 40mMultiple Airlines
Sun 11/306:05 pmSEN - SEA
2 stops26h 05mMultiple Airlines
Deal found 10/27$841
This Mytrip deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/288:15 amSEA - SEN
2 stops28h 25mMultiple Airlines
Tue 11/47:35 amSEN - SEA
2 stops22h 41mMultiple Airlines
Deal found 10/27$1,251
This Mytrip deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/53:10 pmSEA - SEN
2 stops21h 50mMultiple Airlines
Wed 11/127:10 amSEN - SEA
2 stops17h 50mMultiple Airlines
Deal found 10/26$1,630
This Mytrip deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/205:40 pmSEA - SEN
2 stops19h 10mMultiple Airlines
Mon 12/297:15 amSEN - SEA
2 stops16h 25mMultiple Airlines
Deal found 10/25$2,134
This Mytrip deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/208:10 amSEA - SEN
3 stops28h 40mMultiple Airlines
Sun 1/46:05 pmSEN - SEA
2 stops26h 05mMultiple Airlines
Deal found 10/26$2,308

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Southend 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 2,558,603 searches. Data last updated October 28, 2025.
Use the filters below to find and compare flights from Seattle to London Southend Airport that are best for you.

Fly from

Seattle

Fly to

Southend

Route

Depart

Return

Price

SeattleLondon

SEA - SEN

SEASEN

Seattle/Tacoma Intl

Wed 12/3

2:35 pm-9:00 pm

2 stops22h 25m

London Southend

Mon 12/8

7:15 am-5:00 pm

2 stops17h 45m

$671

SeattleLondon

SEA - SEN

SEASEN

Seattle/Tacoma Intl

Fri 1/23

3:10 pm-7:20 pm

2 stops20h 10m

London Southend

Sun 2/1

7:10 am-10:16 pm

3 stops23h 06m

$710

SeattleLondon

SEA - SEN

SEASEN

Seattle/Tacoma Intl

Wed 11/19

2:35 pm-5:15 pm

2 stops18h 40m

London Southend

Sun 11/23

4:50 pm-5:00 pm

2 stops32h 10m

$757

SeattleLondon

SEA - SEN

SEASEN

Seattle/Tacoma Intl

Sun 11/23

5:50 am-10:30 am

3 stops20h 40m

London Southend

Sun 11/30

6:05 pm-12:10 pm

2 stops26h 05m

$813

SeattleLondon

SEA - SEN

SEASEN

Seattle/Tacoma Intl

Thu 11/27

8:10 am-12:50 pm

3 stops20h 40m

London Southend

Sun 11/30

6:05 pm-12:10 pm

2 stops26h 05m

$841

SeattleLondon

SEA - SEN

SEASEN

Seattle/Tacoma Intl

Sat 12/20

5:40 pm-8:50 pm

2 stops19h 10m

London Southend

Mon 12/29

7:15 am-3:40 pm

2 stops16h 25m

$2,134

SeattleLondon

SEA - SEN

SEASEN

Seattle/Tacoma Intl

Sat 12/20

8:10 am-8:50 pm

3 stops28h 40m

London Southend

Sun 1/4

6:05 pm-12:10 pm

2 stops26h 05m

$2,308

SeattleLondon

SEA - SEN

SEASEN

Seattle/Tacoma Intl

Fri 12/5

11:10 pm-8:15 pm

2 stops37h 05m

$376

SeattleLondon

SEA - SEN

SEASEN

Seattle/Tacoma Intl

Sat 12/6

3:20 pm-8:50 pm

2 stops21h 30m

$389

SeattleLondon

SEA - SEN

SEASEN

Seattle/Tacoma Intl

Wed 11/26

8:12 am-12:50 pm

2 stops44h 38m

$393

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 18 results
1
2
  • Most accurate provider: When it comes to deals on Seattle-London Southend Airport flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Seattle-London Southend Airport flight deals on Cheapflights vs. Expedia 90-95% of the time. Price accuracy is based on data collected from Seattle-London Southend Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-London Southend Airport flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-London Southend Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Southend

Have a flexible travel schedule? Discover the best time to fly to Southend from Seattle with our price prediction graph.
Estimated round-trip 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 Seattle to Southend. 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 from for flights from Seattle to London Southend?

    Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to London Southend. On average, Seattle/Tacoma Intl has 0 outbound flights to London Southend per day from 0 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle to Southend 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

Traveling to a place near London Southend Airport?

Book flights to London Southend Airport if you plan to visit one of these locations
Hounslow
Ilford
Hayes
Southend-on-Sea
Harrow
Croydon
Eastleigh
Dartford
Dover
Winchester
Orpington
Gatwick
Borehamwood
Aylesbury
Bedford
Chipping Norton
Wembley
Folkestone
Eastbourne
Sutton

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.