In terms of precipitation, rainfall in London Southend Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Southend Airport when rainfall is around 1.6 in.

If weather is an important factor for your trip to London Southend Airport, 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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

How far in advance should I book a flight from Seattle to London Southend Airport?

To save on the cost of your flight from Seattle to London Southend Airport, book at least 51 days before your planned departure. Booking around this time can save you about 49% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $641 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $943.

What is the cheapest month to fly from Seattle to London Southend Airport?

The best pricing can be found in the month of October. Prices to London Southend Airport from Seattle average $758. You can even find prices in October for less than $758, as users have found deals to London Southend Airport from as low as $515. The month of June appears to be one of the more expensive times to travel to London Southend Airport from Seattle. Flying in the targeted month can save you up to 32%.

What is the cheapest time of day to fly from SEA to SEN?

When flying from Seattle to London Southend Airport, 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 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.

$272+ Flights from Seattle to London Southend Airport

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

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

Round-trip from	$929 (Mytrip)
One-way from	$272 (Kiwi.com)
Popular in	June
Cheapest in	October
Average price	$696

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 ($139 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($23 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 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 September 11, 2025.

Wed 11/52:35 pmSEA - SEN

2 stops22h 25mMultiple Airlines

Wed 11/127:10 amSEN - SEA

2 stops17h 50mMultiple Airlines

Deal found 9/10

$929

Thu 9/1812:30 pmSEA - SEN

2 stops23h 05mMultiple Airlines

Mon 9/224:55 pmSEN - SEA

2 stops25h 40mMultiple Airlines

Deal found 9/10

$1,017

Thu 9/112:20 pmSEA - SEN

2 stops17h 25mMultiple Airlines

Thu 9/185:40 pmSEN - SEA

2 stops26h 15mMultiple Airlines

Deal found 9/10

$1,700

Best flights from Seattle to Southend
Discover carefully curated flight deals from Seattle to Southend that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2025.

Wed 11/52:35 pmSEA - SEN

2 stops22h 25mMultiple Airlines

Wed 11/127:10 amSEN - SEA

2 stops17h 50mMultiple Airlines

Deal found 9/10

$929

Thu 9/1812:30 pmSEA - SEN

2 stops23h 05mMultiple Airlines

Mon 9/224:55 pmSEN - SEA

2 stops25h 40mMultiple Airlines

Deal found 9/10

$1,017

Last-minute flights from Seattle to Southend
Discover last-minute flight deals from Seattle to Southend. Data last updated September 11, 2025 and is based on user searches.

Thu 9/112:20 pmSEA - SEN

2 stops17h 25mMultiple Airlines

Thu 9/185:40 pmSEN - SEA

2 stops26h 15mMultiple Airlines

Deal found 9/10

$1,700

Thu 9/1812:30 pmSEA - SEN

2 stops23h 05mMultiple Airlines

Mon 9/224:55 pmSEN - SEA

2 stops25h 40mMultiple Airlines

Deal found 9/10

$1,017

One-way flights from Seattle to Southend
Search for one-way flight options from Seattle to Southend. Find affordable one-way fares based on user searches. Data last updated September 11, 2025.

Mon 11/311:55 amSEA - SEN

3 stops38h 05mMultiple Airlines

Deal found 9/9

$272

Sat 11/2911:55 amSEA - SEN

3 stops24h 55mMultiple Airlines

Deal found 9/9

$275

Mon 10/2711:55 amSEA - SEN

3 stops40h 05mMultiple Airlines

Deal found 9/9

$291

Thu 10/98:40 amSEA - SEN

2 stops23h 05mMultiple Airlines

Deal found 9/11

$303

Wed 11/53:10 pmSEA - SEN

2 stops21h 50mMultiple Airlines

Deal found 9/11

$312

Thu 10/161:50 pmSEA - SEN

3 stops34h 10mMultiple Airlines

Deal found 9/11

$316

Sat 11/811:55 amSEA - SEN

3 stops24h 55mMultiple Airlines

Deal found 9/9

$320

Tue 11/43:10 pmSEA - SEN

3 stops23h 45mMultiple Airlines

Deal found 9/9

$333

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to London Southend Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleLondon

SEA - SEN

SEASEN

Seattle/Tacoma Intl

Wed 11/5

2:35 pm-9:00 pm

2 stops22h 25m

London Southend

Wed 11/12

7:10 am-5:00 pm

2 stops17h 50m

$929

SeattleLondon

SEA - SEN

SEASEN

Seattle/Tacoma Intl

Thu 9/18

12:30 pm-7:35 pm

2 stops23h 05m

London Southend

Mon 9/22

4:55 pm-10:35 am

2 stops25h 40m

$1,017

SeattleLondon

SEA - SEN

SEASEN

Seattle/Tacoma Intl

Mon 11/3

11:55 am-10:00 am

3 stops38h 05m

$272

SeattleLondon

SEA - SEN

SEASEN

Seattle/Tacoma Intl

Sat 11/29

11:55 am-8:50 pm

3 stops24h 55m

$275

SeattleLondon

SEA - SEN

SEASEN

Seattle/Tacoma Intl

Mon 10/27

11:55 am-11:00 am

3 stops40h 05m

$291

SeattleLondon

SEA - SEN

SEASEN

Seattle/Tacoma Intl

Thu 10/9

8:40 am-3:45 pm

2 stops23h 05m

$303

SeattleLondon

SEA - SEN

SEASEN

Seattle/Tacoma Intl

Wed 11/5

3:10 pm-9:00 pm

2 stops21h 50m

$312

SeattleLondon

SEA - SEN

SEASEN

Seattle/Tacoma Intl

Thu 10/16

1:50 pm-8:00 am

3 stops34h 10m

$316

SeattleLondon

SEA - SEN

SEASEN

Seattle/Tacoma Intl

Sat 11/8

11:55 am-8:50 pm

3 stops24h 55m

$320

SeattleLondon

SEA - SEN

SEASEN

Seattle/Tacoma Intl

Tue 11/4

3:10 pm-10:55 pm

3 stops23h 45m

$333

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

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

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

Hounslow

Hayes

Thornton Heath

Southend-on-Sea

Harrow

Canterbury

Croydon

Eastleigh

Dartford

Dover

Winchester

Orpington

Gatwick

Borehamwood

Aylesbury

Bedford

Wembley

Folkestone

Chichester

Arundel

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Seattle to Southend

Seattle to Heathrow flights

Seattle to Gatwick flights

Seattle to London City flights

Portland to Heathrow flights

Seattle to Luton flights

Seattle to Stansted flights

Portland to Gatwick flights

Portland to London City flights

Spokane to Heathrow flights

Spokane to Gatwick flights

Portland to Stansted flights

Portland to Luton flights

Spokane to London City flights

Pasco to Heathrow flights

Walla Walla to Heathrow flights

Portland to Southend flights

Bellingham to Heathrow flights

Bellingham to Gatwick flights

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.

$272+ 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 11/3. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Seattle to Southend with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Seattle to Southend

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Seattle to Southend

Cheapest flights from Seattle to SouthendExplore 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 September 11, 2025.

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 September 11, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to London Southend Airport that are best for you.

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.

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?

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

How can I find direct flights from Seattle to Southend?

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

Traveling to a place near London Southend Airport?

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.

Alternative routes for Seattle to Southend

See prices for flight routes from nearby airports that may be better suited for you.

100% Free

Book with Flexibility

Travel Smart

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 September 11, 2025.