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Cheap flights from Brighton to Seattle from £400

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 23/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SEA
3 Sep — 10 Sep1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Brighton to Seattle/Tacoma Intl are usually found in February or January, booked 83 days in advance, depart on a Thursday or Wednesday and return on a Tuesday

Cheap flight deals from Brighton to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Brighton to Seattle
Explore the most affordable flight options available from Brighton to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 August 2026.

Wed 4/1112:15
LHR
-
SEA
1 stop12h 45m
Multiple Airlines
Mon 23/1108:31
SEA
-
LHR
2 stops15h 34m
Multiple Airlines
Deal found 29/7£449
Mon 2/1120:35
LHR
-
SEA
1 stop28h 25m
Multiple Airlines
Tue 24/1108:31
SEA
-
LHR
2 stops15h 34m
Multiple Airlines
Deal found 29/7£450
Sun 1/1120:35
LHR
-
SEA
1 stop28h 25m
Multiple Airlines
Tue 24/1108:31
SEA
-
LHR
2 stops15h 34m
Multiple Airlines
Deal found 29/7£450
Mon 12/1021:25
LHR
-
SEA
1 stop28h 30m
Icelandair
Mon 19/1019:00
SEA
-
LHR
1 stop17h 20m
Icelandair
Deal found 30/7£452
Sun 25/1013:35
LHR
-
SEA
1 stop29h 44m
Lufthansa
Tue 27/1010:40
SEA
-
LHR
1 stop13h 45m
Lufthansa
Deal found 1/8£453
Wed 26/813:05
LHR
-
SEA
1 stop15h 35m
Icelandair
Fri 18/915:40
SEA
-
LHR
1 stop12h 15m
Icelandair
Deal found 3/8£454
Tue 6/1015:40
LGW
-
SEA
1 stop13h 00m
Icelandair
Mon 12/1019:00
SEA
-
LGW
1 stop11h 40m
Icelandair
Deal found 30/7£455
Tue 6/1021:25
LHR
-
SEA
1 stop28h 30m
Icelandair
Mon 12/1015:40
SEA
-
LHR
1 stop12h 15m
Icelandair
Deal found 30/7£457
Tue 6/1013:05
LHR
-
SEA
1 stop15h 35m
Icelandair
Mon 19/1015:40
SEA
-
LHR
1 stop12h 15m
Icelandair
Deal found 31/7£459
Tue 22/915:40
LGW
-
SEA
1 stop13h 00m
Icelandair
Wed 30/915:40
SEA
-
LGW
1 stop15h 00m
Icelandair
Deal found 30/7£459
Wed 9/913:05
LHR
-
SEA
1 stop12h 50m
Icelandair
Wed 30/915:40
SEA
-
LHR
1 stop12h 15m
Icelandair
Deal found 30/7£460
Wed 4/1112:15
LHR
-
SEA
1 stop12h 45m
Multiple Airlines
Wed 25/1108:31
SEA
-
LHR
2 stops15h 34m
Multiple Airlines
Deal found 29/7£461

Find flight deals from Brighton to Seattle

Keep the following information in mind while searching for Brighton to Seattle flight deals. Data was last updated 4 August 2026.

Round-trip from

£450

One-way from

£400

Popular in

December

Cheapest in

February

Average price

£594
British Airways
  • British Airways
  • 31/8-18/9
  • Nonstop
  • 19h 00m total
  • Brighton to Seattle
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 23/9
  • Nonstop
  • 10h 00m total
  • Brighton to Seattle
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Brighton 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 4 August 2026.
Use the filters below to find and compare flights from Brighton to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 2/11

11:55-17:00

1 stop13h 05m

Seattle/Tacoma Intl

Thu 26/11

14:35-10:55

1 stop12h 20m

£468

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sun 1/11

11:55-17:00

1 stop13h 05m

Seattle/Tacoma Intl

Thu 26/11

14:35-10:55

1 stop12h 20m

£497

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 2/11

20:35-17:00

1 stop28h 25m

Seattle/Tacoma Intl

Sat 28/11

14:35-19:30

1 stop20h 55m

£516

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sun 18/10

15:40-17:55

1 stop34h 15m

Seattle/Tacoma Intl

Tue 3/11

14:35-10:55

1 stop12h 20m

£521

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 16/9

10:50-16:59

1 stop14h 09m

Seattle/Tacoma Intl

Fri 25/9

09:05-09:40

2 stops16h 35m

£525

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Wed 9/9

07:25-18:29

2 stops19h 04m

Seattle/Tacoma Intl

Wed 30/9

20:29-21:20

2 stops16h 51m

£529

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sat 12/12

06:30-12:00

1 stop13h 30m

Seattle/Tacoma Intl

Sun 13/12

15:15-11:50

1 stop12h 35m

£529

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sun 13/9

07:30-19:14

2 stops19h 44m

Seattle/Tacoma Intl

Wed 23/9

13:16-14:10

1 stop16h 54m

£529

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 30/10

14:45-17:50

Nonstop10h 05m

Seattle/Tacoma Intl

Sat 28/11

18:55-12:20

Nonstop9h 25m

£544

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 28/8

06:30-11:37

1 stop13h 07m

Seattle/Tacoma Intl

Sat 12/9

21:50-15:35

Nonstop9h 45m

£551

Flights are sorted by cheapest return flights first.

Deals found on 3/8

Showing 1-10 of 60 resultsSorted by cheapest first
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6

Best time to book a flight from Brighton to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Brighton 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.

Cheapflights Insights

Everything you need to know about your flight from Brighton to Seattle

What is the cheapest time of day to fly from BH9 to SEA?

Find hourly flight availability from Brighton to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 4 August 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Brighton to Seattle as you normally would.

Weekly flight availability from Brighton to Seattle

Explore weekly flight availability from Brighton to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 4 August 2026.

The most flights from BH9 to SEA are scheduled on a Friday (29 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (23 on average).

How much does it cost for a return flight from Brighton to Seattle?

Airfare is below average for this route at the moment.
Brighton to Seattle flights typically cost between £521 and £679 in August.
The cheapest return price found within the last 5 days was £450 on British Airways (31 Aug–18 Sept).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated 4 August 2026.
See what other customers who have flown with Alaska Airlines,KLM, andVirgin Atlantic from Brighton to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,758 reviews
Check prices

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.0

Food

7.0

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
Alaska Airlines
7.9
Good
12,758 reviews
Alaska Airlines
7.9
Good
12,758 reviews
Check prices

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.0

Food

7.0

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
KLM
7.8
Good
1,552 reviews
Alaska Airlines
7.9
Good
12,758 reviews
Check prices

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.0

Food

7.0

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
Virgin Atlantic
7.5
Good
694 reviews
Alaska Airlines
7.9
Good
12,758 reviews
Check prices

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.0

Food

7.0

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
Icelandair
7.0
Good
719 reviews
Alaska Airlines
7.9
Good
12,758 reviews
Check prices

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.0

Food

7.0

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
British Airways
6.7
Okay
8,148 reviews
Alaska Airlines
7.9
Good
12,758 reviews
Check prices

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.0

Food

7.0

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

LHR - SEA

It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.

Related info for your journey

Find useful and relevant information for your journey from Brighton 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 Brighton?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly into when you book flights from Brighton to Seattle. 13 airlines have flights to Seattle/Tacoma Intl from Brighton on a regular basis. Booking flights from Brighton to Seattle/Tacoma Intl should not be difficult; the airport handles an average of 24 inbound flights from Brighton per day.

  • How long is the flight from Brighton to Seattle?

    For as low as £468, Icelandair can have you in Seattle from Brighton in 13h 05m. Brighton and Seattle are separated by a distance of 4807 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Brighton to Seattle one-way?

    To fly one-way, consider booking your trip with Icelandair, which is currently one of the cheapest options available, starting at £352. British Airways flights start at £363 while deals on Virgin Atlantic start at £366 one-way.

  • What are the most popular routes from Brighton to Seattle?

    The most popular route from Brighton to Seattle is London Heathrow - Seattle/Tacoma Intl. You may also consider London Gatwick - Seattle/Tacoma Intl or London Stansted - Seattle/Tacoma Intl.

  • What are the most reliable airlines from Brighton to Seattle?

    No one likes to see their flight delayed. When booking a flight from Brighton to Seattle consider choosing Scandinavian Airlines (85%), KLM (77%) or Air France (77%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Brighton to Seattle?

    Looking at all options, your cheapest flight can be booked for £379. While the most popular route (London Heathrow - Seattle/Tacoma Intl) can be booked for £412 on average, our data indicates £1,819 when flying from Brighton to Seattle.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Brighton 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
Federal Way
SeaTac

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Top 10 airlines flying from Brighton to Seattle

Discover the top 10 airlines that operate flights from Brighton to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 4 August 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£334Average£513FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IcelandairCheapest£340Average£500FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£390Average£619FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Virgin AtlanticCheapest£423Average£585FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
United AirlinesCheapest£429Average£639FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
KLMCheapest£433Average£610FlexibilityNo cancel feeOn-time75%
Search KLM flights
DeltaCheapest£440Average£636FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air FranceCheapest£449Average£634FlexibilityNo cancel feeOn-time77%
Search Air France flights
FinnairCheapest£460Average£669FlexibilityNo cancel feeOn-time76%
Search Finnair flights
British AirwaysCheapest£461Average£642FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Brighton to Seattle?

When you search for this flight from Brighton 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 Brighton to Seattle?

Millions of users choose and trust Cheapflights to book the best flight deals from Brighton to Seattle for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Certainly. Search results for flights to Seattle from Brighton shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Seattle from Brighton today and book when prices fit your budget.

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