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Cheap flights from Seattle to London from $345

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to London departing on 3/7. 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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Find the cheapest flights from Seattle to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
3:40 pm - 11:45 am
SEA
-
LGW
12h 05m1 stop
Icelandair Logo
3:40 pm - 8:40 pm
LGW
-
SEA
13h 00m1 stop
$577Icelandair
Fri, May 1 - Wed, May 20
Lufthansa Logo
7:00 am - 5:55 am
SEA
-
LHR
14h 55m1 stop
Lufthansa Logo
6:35 am - 1:20 pm
LHR
-
SEA
14h 45m1 stop
$577Lufthansa
Thu, Jan 15 - Wed, Jan 28
Multiple Airlines Logo
3:10 pm - 7:40 pm
SEA
-
STN
20h 30m2 stops
Multiple Airlines Logo
4:20 pm - 7:16 pm
STN
-
SEA
34h 56m3 stops
$578Multiple Airlines
Wed, Jan 14 - Wed, Jan 21
Icelandair Logo
2:35 pm - 10:55 am
SEA
-
LGW
12h 20m1 stop
Icelandair Logo
11:55 am - 6:00 pm
LGW
-
SEA
13h 05m1 stop
$578Icelandair
Fri, Mar 6 - Tue, Mar 17
Icelandair Logo
3:40 pm - 2:40 pm
SEA
-
LGW
15h 00m1 stop
Icelandair Logo
3:40 pm - 8:40 pm
LGW
-
SEA
13h 00m1 stop
$579Icelandair
Tue, Apr 14 - Wed, Apr 22
Multiple Airlines Logo
2:00 pm - 11:35 pm
SEA
-
STN
25h 35m2 stops
Multiple Airlines Logo
4:20 pm - 1:20 pm
STN
-
SEA
29h 00m2 stops
$585Multiple Airlines
Sat, Jan 31 - Sat, Feb 7
Virgin Atlantic Logo
3:05 pm - 6:25 pm
SEA
-
LCY
19h 20m1 stop
Virgin Atlantic Logo
6:55 pm - 12:35 pm
LCY
-
SEA
24h 40m1 stop
$650Virgin Atlantic
Wed, Feb 25 - Mon, Mar 9
Delta Logo
4:00 pm - 4:35 pm
SEA
-
LCY
17h 35m1 stop
Delta Logo
10:00 am - 4:30 pm
LCY
-
SEA
14h 30m1 stop
$652Delta
Wed, Mar 18 - Tue, Mar 31
Virgin Atlantic Logo
7:30 am - 9:30 am
SEA
-
LCY
18h 00m2 stops
Virgin Atlantic Logo
8:05 pm - 12:35 pm
LCY
-
SEA
23h 30m1 stop
$654Virgin Atlantic
Wed, Feb 25 - Tue, Mar 10
KLM Logo
1:45 pm - 9:30 am
SEA
-
LCY
11h 45m1 stop
KLM Logo
10:00 am - 4:30 pm
LCY
-
SEA
14h 30m1 stop
$664KLM
Mon, Apr 20 - Thu, May 7

Lufthansa flights from Seattle to Brighton

Our best Lufthansa deals on Seattle to Brighton flight tickets
Lufthansa
Jan 15
SEA7:00 amSeattle/Tacoma Intl
14h 55m
1 stop
LHR5:55 amLondon Heathrow
Jan 28
LHR6:35 amLondon Heathrow
14h 45m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$577
Find similar
Lufthansa
Jan 14
SEA9:55 amSeattle/Tacoma Intl
17h 55m
1 stop
LHR11:50 amLondon Heathrow
Jan 18
LHR7:40 amLondon Heathrow
19h 36m
2 stops
SEA7:16 pmSeattle/Tacoma Intl
$584
Find similar
Lufthansa
Jan 17
SEA3:40 pmSeattle/Tacoma Intl
12h 10m
1 stop
LHR11:50 amLondon Heathrow
Jan 26
LHR8:15 pmLondon Heathrow
31h 01m
2 stops
SEA7:16 pmSeattle/Tacoma Intl
$589
Find similar

Air Canada flights from Seattle to Brighton

Our best Air Canada deals on Seattle to Brighton flight tickets
Air Canada
Jan 31
SEA9:55 amSeattle/Tacoma Intl
17h 55m
1 stop
LHR11:50 amLondon Heathrow
Feb 7
LHR3:00 pmLondon Heathrow
15h 06m
2 stops
SEA10:06 pmSeattle/Tacoma Intl
$601
Find similar
Air Canada
Jan 15
SEA9:55 amSeattle/Tacoma Intl
17h 55m
1 stop
LHR11:50 amLondon Heathrow
Jan 28
LHR3:00 pmLondon Heathrow
15h 06m
2 stops
SEA10:06 pmSeattle/Tacoma Intl
$610
Find similar
Air Canada
Jan 15
SEA3:40 pmSeattle/Tacoma Intl
12h 10m
1 stop
LHR11:50 amLondon Heathrow
Jan 28
LHR3:00 pmLondon Heathrow
15h 06m
2 stops
SEA10:06 pmSeattle/Tacoma Intl
$616
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Brighton 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 832,500 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from Seattle to Brighton that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Fri 5/1

3:40 pm-11:45 am

1 stop12h 05m

London Gatwick

Wed 5/20

3:40 pm-8:40 pm

1 stop13h 00m

$577

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Thu 1/15

7:00 am-5:55 am

1 stop14h 55m

London Heathrow

Wed 1/28

6:35 am-1:20 pm

1 stop14h 45m

$577

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Wed 1/14

3:10 pm-7:40 pm

2 stops20h 30m

London Stansted

Wed 1/21

4:20 pm-7:16 pm

3 stops34h 56m

$578

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Fri 3/6

2:35 pm-10:55 am

1 stop12h 20m

London Gatwick

Tue 3/17

11:55 am-6:00 pm

1 stop13h 05m

$578

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 4/14

3:40 pm-2:40 pm

1 stop15h 00m

London Gatwick

Wed 4/22

3:40 pm-8:40 pm

1 stop13h 00m

$579

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Sat 1/31

2:00 pm-11:35 pm

2 stops25h 35m

London Stansted

Sat 2/7

4:20 pm-1:20 pm

2 stops29h 00m

$585

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 2/25

3:05 pm-6:25 pm

1 stop19h 20m

London City

Mon 3/9

6:55 pm-12:35 pm

1 stop24h 40m

$650

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 3/18

4:00 pm-4:35 pm

1 stop17h 35m

London City

Tue 3/31

10:00 am-4:30 pm

1 stop14h 30m

$652

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Wed 2/25

7:30 am-9:30 am

2 stops18h 00m

London City

Tue 3/10

8:05 pm-12:35 pm

1 stop23h 30m

$654

SeattleLondon

SEA - LCY

SEALCY

Seattle/Tacoma Intl

Mon 4/20

1:45 pm-9:30 am

1 stop11h 45m

London City

Thu 5/7

10:00 am-4:30 pm

1 stop14h 30m

$664

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from Seattle to Brighton

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

What is the cheapest month to fly to Brighton?

The month of November is, on average, the cheapest month to fly to Brighton from Seattle, with most prices found around $646. If you are unable to visit Brighton during the month of November, then departing from Seattle during the month October is also very affordable. Most momondo users find prices during this month for around $647.

What is the cheapest Seattle/Tacoma Intl to Brighton flight route?

Fly from Seattle/Tacoma Intl to London Heathrow for the best Seattle/Tacoma Intl - Brighton flight prices

How far in advance should I book a flight to Brighton?

You are more likely to see cheaper flights to Brighton from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Brighton for around $795 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Brighton from Seattle for as low as $692 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to Brighton flights?

There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to Brighton flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to Brighton flights?

No. A direct flight is the cheapest option for a flight between Seattle to Brighton.

Cheap Seattle to Brighton flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Brighton

Fastest flight time

9h 15m

Direct flights

Every day

Airports in Brighton

6 airports
The fastest flight from Seattle to Brighton takes 9h 15m
Direct flights go from Seattle to Brighton every day.
There are 6 airports in Brighton. From Seattle there are direct flights to London Heathrow (LHR).
Search flight deals

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Brighton?

    Prices for flights from Seattle/Tacoma Intl Airport to Brighton are refreshed on a daily basis.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Brighton?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Brighton?

    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 Seattle/Tacoma Intl Airport to Brighton.

  • What documentation or ID do you need to fly to Brighton?

    The travel and health documents required for your trip to Brighton can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Brighton. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Seattle to Brighton?

Best airlines flying from Seattle to Brighton

Compare and see reviews for airlines that fly from Seattle to Brighton with momondo
Airline
Rating
Free Cancellation
Price
Scandinavian AirlinesPriceFrom $465Free CancellationRating
7.4
1,607 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $481Free CancellationRating
7.0
591 reviews
Search Icelandair flights
Aer LingusPriceFrom $500Free CancellationRating
7.2
1,395 reviews
Search Aer Lingus flights
American AirlinesPriceFrom $517Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights
Air FrancePriceFrom $532Free CancellationRating
7.4
1,507 reviews
Search Air France flights
British AirwaysPriceFrom $543Free CancellationRating
6.7
7,585 reviews
Search British Airways flights
United AirlinesPriceFrom $547Free CancellationRating
7.4
9,091 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $553Free CancellationRating
8.0
11,477 reviews
Search Alaska Airlines flights
FinnairPriceFrom $556Free CancellationRating
7.6
1,338 reviews
Search Finnair flights
DeltaPriceFrom $562Free CancellationRating
7.9
8,005 reviews
Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Brighton?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Seattle to Brighton. momondo saves you time and could save you money on your trip.

Can I find flights from Seattle to Brighton with flexible booking policies on momondo?

momondo does allow users to show only those flights to Brighton from Seattle which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Seattle to Brighton?

Once all potential Seattle to Brighton flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of Seattle to Brighton flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Brighton trip

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