Find flights
When to book
Airlines
FAQs

Cheap flights from Bristol to Seattle from £301

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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
BRS — SEA
24 Apr — 1 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Bristol to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Bristol to Seattle
Explore the most affordable flight options available from Bristol to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 March 2026.

Mon 4/520:20
BRS
-
SEA
2 stops45h 20m
Multiple Airlines
Mon 11/519:10
SEA
-
BRS
1 stop17h 05m
Multiple Airlines
Deal found 20/3£699
Mon 4/513:45
BRS
-
SEA
1 stop34h 45m
KLM
Mon 11/513:45
SEA
-
BRS
1 stop15h 30m
KLM
Deal found 20/3£722
Mon 4/509:20
BRS
-
SEA
2 stops20h 45m
Delta
Mon 11/507:15
SEA
-
BRS
2 stops22h 00m
Delta
Deal found 20/3£727
Fri 19/616:40
BRS
-
SEA
2 stops27h 05m
Multiple Airlines
Sun 5/719:10
SEA
-
BRS
1 stop34h 55m
Multiple Airlines
Deal found 24/3£728
Fri 8/512:25
BRS
-
SEA
1 stop12h 45m
Aer Lingus
Fri 15/519:10
SEA
-
BRS
1 stop12h 20m
Aer Lingus
Deal found 24/3£752
Fri 3/421:55
BRS
-
SEA
2 stops26h 05m
Multiple Airlines
Thu 4/619:00
SEA
-
BRS
3 stops31h 15m
Multiple Airlines
Deal found 24/3£775
Fri 8/507:05
BRS
-
SEA
2 stops18h 05m
Multiple Airlines
Fri 15/519:10
SEA
-
BRS
2 stops19h 05m
Multiple Airlines
Deal found 24/3£778
Sat 2/510:45
BRS
-
SEA
1 stop13h 45m
KLM
Fri 8/513:45
SEA
-
BRS
1 stop19h 20m
KLM
Deal found 20/3£783

Find flight deals from Bristol to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Bristol (BRS) to Seattle (SEA). 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 25 March 2026.

Round-trip from

£699

One-way from

£301

Popular in

April

Cheapest in

March

Average price

£575
4/5-11/5
  • 4/5-11/5
  • 3 total stops
  • 62h 25m total
  • Bristol to Seattle
Search Deals
2/6
  • 2/6
  • 2 total stops
  • 30h 40m total
  • Bristol to Seattle
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£28 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£18 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Bristol 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 25 March 2026.
Use the filters below to find and compare flights from Bristol to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BristolSeattle

BRS - SEA

BRSSEA

Bristol

Mon 4/5

13:45-16:30

1 stop34h 45m

Seattle/Tacoma Intl

Mon 11/5

13:45-13:15

1 stop15h 30m

£722

BristolSeattle

BRS - SEA

BRSSEA

Bristol

Mon 4/5

09:20-22:05

2 stops20h 45m

Seattle/Tacoma Intl

Mon 11/5

07:15-13:15

2 stops22h 00m

£727
Fastest return journey

BristolSeattle

BRS - SEA

BRSSEA

Bristol

Sat 2/5

06:15-16:30

1 stop18h 15m

Seattle/Tacoma Intl

Fri 8/5

10:35-10:15

2 stops15h 40m

£783

BristolSeattle

BRS - SEA

BRSSEA

Bristol

Wed 22/4

08:25-17:10

1 stop16h 45m

Seattle/Tacoma Intl

Sun 26/4

19:10-07:55

1 stop28h 45m

£802
Cheapest one-way
Fastest single journey

BristolSeattle

BRS - SEA

BRSSEA

Bristol

Tue 2/6

19:55-18:35

2 stops30h 40m

£301

Flights are sorted by cheapest return flights first.

Deals found on 22/3

Sorted by cheapest first

Best time to book a flight from Bristol to Seattle

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

What is the cheapest month to book a flight from Bristol to Seattle?

Currently, September is the cheapest month in which you can book a flight from Bristol to Seattle (average of £537). Flying from Bristol to Seattle in April is currently the most expensive (average of £928). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 25 March 2026.
Read through reviews of airlines operating flights from Bristol to Seattle, such as KLM. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,478 reviews
Check prices

Food

7.3

Boarding

7.8

Entertainment

7.1

Overall

7.8

Comfort

7.6

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.8
Good
1,478 reviews
KLM
7.8
Good
1,478 reviews
Check prices

Food

7.3

Boarding

7.8

Entertainment

7.1

Overall

7.8

Comfort

7.6

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

Related info for your journey

Find useful and relevant information for your journey from Bristol to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Bristol to Seattle?

    Departing from Bristol to Seattle will take you 20h 45m. The distance between Bristol and Seattle is about 4727 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What is the cheapest airline to fly from Bristol to Seattle round-trip?

    Currently priced at £538, KLM will fly you from Bristol to Seattle and back. In addition to KLM, many other airlines offer competitively priced options for your trip. Users have found that KLM is 19% cheaper than the other options available to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Bristol 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.

  • What is the cheapest month to book a flight from Bristol to Seattle?

    Currently, September is the cheapest month in which you can book a flight from Bristol to Seattle (average of £537). Flying from Bristol to Seattle in April is currently the most expensive (average of £928). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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

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.

Top airline flying from Bristol to Seattle

Discover the top airline that operate flights from Bristol 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 25 March 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£538Average£620FlexibilityNo cancel feeOn-time75%
Search KLM 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 Bristol to Seattle?

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

Millions of users choose and trust Cheapflights to book the best flight deals from Bristol 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 Bristol to Seattle with no change fees?

Yes, we can. To see specific flights from Bristol to Seattle with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes! Start tracking prices for Bristol to Seattle flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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.