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Cheap flights from Brighton to Seattle from £425

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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SEA
2 Aug — 9 Aug1
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 84 days in advance, depart on a Thursday or Wednesday and return on a Thursday

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 3 July 2026.

Tue 8/913:00
LGW
-
SEA
1 stop12h 55m
Icelandair
Wed 30/919:00
SEA
-
LGW
1 stop11h 40m
Icelandair
Deal found 29/6£449
Fri 9/1013:05
LHR
-
SEA
1 stop12h 50m
Icelandair
Fri 16/1015:40
SEA
-
LHR
1 stop12h 15m
Icelandair
Deal found 29/6£449
Tue 8/913:05
LHR
-
SEA
1 stop15h 35m
Icelandair
Wed 30/915:40
SEA
-
LHR
1 stop20h 40m
Icelandair
Deal found 29/6£450
Wed 7/1015:40
LGW
-
SEA
1 stop34h 15m
Icelandair
Sat 7/1114:35
SEA
-
LGW
1 stop12h 20m
Icelandair
Deal found 1/7£452
Wed 26/809:50
LHR
-
SEA
Nonstop9h 45m
British Airways
Wed 9/920:20
SEA
-
LHR
Nonstop9h 25m
British Airways
Deal found 30/6£452
Sun 1/1111:55
LGW
-
SEA
1 stop13h 05m
Icelandair
Sat 20/315:35
SEA
-
LGW
1 stop15h 05m
Icelandair
Deal found 1/7£452
Sun 4/1013:05
LHR
-
SEA
1 stop15h 35m
Icelandair
Fri 9/1019:00
SEA
-
LHR
1 stop17h 20m
Icelandair
Deal found 30/6£452
Sat 5/915:40
LGW
-
SEA
1 stop13h 00m
Icelandair
Fri 18/915:40
SEA
-
LGW
1 stop15h 00m
Icelandair
Deal found 1/7£454
Sat 29/815:40
LGW
-
SEA
1 stop28h 05m
Icelandair
Sun 6/919:00
SEA
-
LGW
1 stop11h 40m
Icelandair
Deal found 30/6£455
Tue 22/910:20
LGW
-
SEA
1 stop13h 20m
Condor
Tue 6/1018:05
SEA
-
LGW
1 stop16h 45m
Condor
Deal found 28/6£455
Thu 20/815:40
LGW
-
SEA
1 stop28h 05m
Icelandair
Sat 5/915:40
SEA
-
LGW
1 stop12h 05m
Icelandair
Deal found 1/7£456
Wed 2/915:40
LGW
-
SEA
1 stop13h 00m
Icelandair
Wed 9/915:40
SEA
-
LGW
1 stop15h 00m
Icelandair
Deal found 1/7£458

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 3 July 2026.

Round-trip from

£449

One-way from

£425

Popular in

July

Cheapest in

February

Average price

£647
Icelandair
  • Icelandair
  • 9/10-16/10
  • 2 total stops
  • 28h 00m total
  • Brighton to Seattle
Search Deals
3/10
  • 3/10
  • 3 total stops
  • 45h 20m total
  • Brighton to Seattle
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£47 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 3 July 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

LHR - SEA

LHRSEA

London Heathrow

Sun 27/9

21:25-17:55

1 stop28h 30m

Seattle/Tacoma Intl

Mon 5/10

15:40-20:20

1 stop20h 40m

£536

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 14/10

10:25-17:47

1 stop15h 22m

Seattle/Tacoma Intl

Mon 26/10

15:00-15:45

1 stop17h 45m

£541

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sat 19/9

06:55-16:59

1 stop18h 04m

Seattle/Tacoma Intl

Sat 26/9

10:55-11:55

2 stops17h 00m

£544

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Sat 29/8

13:10-20:52

1 stop15h 42m

Seattle/Tacoma Intl

Sun 6/9

13:30-06:45

Nonstop9h 15m

£556

LondonSeattle

LCY - SEA

LCYSEA

London City

Mon 9/11

09:15-23:16

2 stops22h 01m

Seattle/Tacoma Intl

Thu 12/11

15:27-17:05

2 stops17h 38m

£558

LondonSeattle

LCY - SEA

LCYSEA

London City

Thu 24/9

10:00-16:35

1 stop14h 35m

Seattle/Tacoma Intl

Sun 4/10

13:45-09:30

1 stop11h 45m

£564

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 24/9

13:05-17:55

1 stop12h 50m

Seattle/Tacoma Intl

Fri 2/10

15:40-11:55

1 stop12h 15m

£564

LondonSeattle

LTN - SEA

LTNSEA

London Luton

Wed 2/9

18:10-21:00

3 stops34h 50m

Seattle/Tacoma Intl

Tue 8/9

14:10-15:30

2 stops17h 20m

£565

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Fri 4/9

11:40-14:00

Nonstop10h 20m

Seattle/Tacoma Intl

Mon 7/9

18:20-12:10

Nonstop9h 50m

£568

LondonSeattle

LCY - SEA

LCYSEA

London City

Fri 25/9

10:00-16:35

1 stop14h 35m

Seattle/Tacoma Intl

Tue 6/10

13:45-09:30

1 stop11h 45m

£569

Flights are sorted by cheapest return flights first.

Deals found on 30/6

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 3 July 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 3 July 2026.

The most flights from BH9 to SEA are scheduled on a Monday (22 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (17 on average).

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

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 3 July 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
12,606 reviews
Check prices

Entertainment

7.0

Crew

8.5

Food

7.1

Comfort

7.8

Overall

7.9

Boarding

8.1

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
12,606 reviews
Alaska Airlines
7.9
Good
12,606 reviews
Check prices

Entertainment

7.0

Crew

8.5

Food

7.1

Comfort

7.8

Overall

7.9

Boarding

8.1

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
1,532 reviews
Alaska Airlines
7.9
Good
12,606 reviews
Check prices

Entertainment

7.0

Crew

8.5

Food

7.1

Comfort

7.8

Overall

7.9

Boarding

8.1

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
689 reviews
Alaska Airlines
7.9
Good
12,606 reviews
Check prices

Entertainment

7.0

Crew

8.5

Food

7.1

Comfort

7.8

Overall

7.9

Boarding

8.1

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
695 reviews
Alaska Airlines
7.9
Good
12,606 reviews
Check prices

Entertainment

7.0

Crew

8.5

Food

7.1

Comfort

7.8

Overall

7.9

Boarding

8.1

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
8,088 reviews
Alaska Airlines
7.9
Good
12,606 reviews
Check prices

Entertainment

7.0

Crew

8.5

Food

7.1

Comfort

7.8

Overall

7.9

Boarding

8.1

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. 14 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 21 inbound flights from Brighton per day.

  • How long is the flight from Brighton to Seattle?

    For as low as £541, Icelandair can have you in Seattle from Brighton in 15h 22m. 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 £355. British Airways flights start at £367 while deals on KLM start at £394 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 (88%), KLM (84%) or Air France (84%) 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 £371. While the most popular route (London Heathrow - Seattle/Tacoma Intl) can be booked for £461 on average, our data indicates £1,820 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
Tacoma
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 3 July 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£337Average£531FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IcelandairCheapest£343Average£508FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£394Average£621FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Virgin AtlanticCheapest£431Average£592FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
KLMCheapest£440Average£621FlexibilityNo cancel feeOn-time75%
Search KLM flights
DeltaCheapest£444Average£632FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air FranceCheapest£453Average£647FlexibilityNo cancel feeOn-time77%
Search Air France flights
British AirwaysCheapest£462Average£642FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£470Average£645FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
FinnairCheapest£477Average£679FlexibilityNo cancel feeOn-time76%
Search Finnair 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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