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Cheap flights from Birmingham to Seattle from £423

BHX — SEA
20 Oct — 27 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Birmingham to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Birmingham to Seattle

Thu 8/1008:10 -
1 stop17h 00m
Sat 24/1019:10 -
1 stop17h 20m
Deal found 19/9£486
Thu 8/1008:10 -
1 stop17h 00m
Thu 15/1019:10 -
1 stop15h 00m
Deal found 15/9£490
Mon 28/920:15 -
1 stop28h 20m
Mon 12/1018:40 -
1 stop15h 10m
Deal found 18/9£516
Thu 1/1008:10 -
1 stop17h 00m
Wed 14/1019:10 -
1 stop15h 00m
Deal found 19/9£518
Mon 2/1113:30 -
2 stops56h 42m
Mon 9/1119:55 -
2 stops37h 45m
Deal found 18/9£523
Sat 3/1009:10 -
2 stops20h 53m
Tue 6/1011:05 -
2 stops22h 45m
Deal found 19/9£524
Fri 30/1020:45 -
2 stops29h 17m
Fri 6/1115:25 -
1 stop14h 10m
Deal found 15/9£528
Mon 2/1114:25 -
1 stop31h 25m
Mon 9/1115:25 -
1 stop18h 15m
Deal found 18/9£530
Mon 28/906:00 -
2 stops25h 00m
Mon 12/1018:40 -
1 stop15h 10m
Deal found 18/9£531
Thu 8/1006:00 -
1 stop13h 15m
Sat 24/1008:25 -
2 stops18h 25m
Deal found 19/9£533
Thu 1/1005:55 -
1 stop18h 40m
Wed 14/1009:45 -
2 stops19h 55m
Deal found 19/9£534

Find flight deals from Birmingham to Seattle

Round-trip from

£486

One-way from

£423

Popular in

August

Cheapest in

April

Average price

£637
Aer Lingus
  • Aer Lingus
  • 8/10-24/10
  • 2 total stops
  • 34h 20m total
  • Birmingham to Seattle
Search Deals
12/10-31/12
  • 12/10-31/12
  • 2 total stops
  • 29h 15m total
  • Birmingham to Seattle
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£108 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£17 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BirminghamSeattle

BHX Birmingham - SEA Seattle/Tacoma Intl

BHXSEA

Birmingham

Mon 12/10

21:35-18:45

3 stops29h 10m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£461

BirminghamSeattle

BHX Birmingham - SEA Seattle/Tacoma Intl

BHXSEA

Birmingham

Thu 1/10

08:10-17:10

1 stop17h 00m

Seattle/Tacoma Intl

Wed 14/10

19:10-18:10

1 stop15h 00m

£518

BirminghamSeattle

BHX Birmingham - SEA Seattle/Tacoma Intl

BHXSEA

Birmingham

Mon 12/10

08:10-17:10

1 stop17h 00m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£522

BirminghamSeattle

BHX Birmingham - SEA Seattle/Tacoma Intl

BHXSEA

Birmingham

Mon 2/11

06:00-15:14

1 stop17h 14m

Seattle/Tacoma Intl

Mon 9/11

06:00-09:45

2 stops19h 45m

£524

BirminghamSeattle

BHX Birmingham - SEA Seattle/Tacoma Intl

BHXSEA

Birmingham

Tue 13/10

18:20-15:40

3 stops29h 20m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£531

BirminghamSeattle

BHX Birmingham - SEA Seattle/Tacoma Intl

BHXSEA

Birmingham

Thu 1/10

05:55-16:35

1 stop18h 40m

Seattle/Tacoma Intl

Wed 14/10

09:45-13:40

2 stops19h 55m

£534

BirminghamSeattle

BHX Birmingham - SEA Seattle/Tacoma Intl

BHXSEA

Birmingham

Mon 2/11

06:00-16:37

2 stops18h 37m

Seattle/Tacoma Intl

Mon 9/11

15:25-17:40

1 stop18h 15m

£537

BirminghamSeattle

BHX Birmingham - SEA Seattle/Tacoma Intl

BHXSEA

Birmingham

Tue 3/11

06:00-18:35

2 stops20h 35m

Seattle/Tacoma Intl

Tue 10/11

16:05-17:40

1 stop17h 35m

£537

BirminghamSeattle

BHX Birmingham - SEA Seattle/Tacoma Intl

BHXSEA

Birmingham

Thu 8/10

05:55-11:52

1 stop13h 57m

Seattle/Tacoma Intl

Thu 15/10

09:45-13:40

2 stops19h 55m

£538

BirminghamSeattle

BHX Birmingham - SEA Seattle/Tacoma Intl

BHXSEA

Birmingham

Sun 15/11

06:00-19:05

2 stops21h 05m

Seattle/Tacoma Intl

Sat 28/11

16:05-13:35

1 stop13h 30m

£542

Flights are sorted by cheapest return flights first.

Deals found on 19/9

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

Best time to book a flight from Birmingham to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Birmingham with our price prediction graph.
Estimated return price

Cheapflights Insights

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

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

Currently, April is the cheapest month in which you can book a flight from Birmingham to Seattle (average of £378). Flying from Birmingham to Seattle in August is currently the most expensive (average of £855). 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.

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

Airfare is below average for this route at the moment.

Birmingham to Seattle flights typically cost between £591 and £667 in October.
The cheapest return price found within the last 5 days was £486 on Aer Lingus (8 Oct–24 Oct).

Reviews of airlines servicing Seattle

Check out reviews from past customers who have flown with Aer Lingus,Lufthansa, andBritish Airways from Birmingham to Seattle to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.3
Good
1,772 reviews
Check prices

Entertainment

7.0

Crew

8.1

Food

6.7

Comfort

7.2

Boarding

7.4

Overall

7.3

Reviews

1 / 20
10.0
Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.
Aer Lingus
7.3
Good
1,772 reviews
Aer Lingus
7.3
Good
1,772 reviews
Check prices

Entertainment

7.0

Crew

8.1

Food

6.7

Comfort

7.2

Boarding

7.4

Overall

7.3

Reviews

1 / 20
10.0
Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.
Lufthansa
6.8
Okay
8,237 reviews
Aer Lingus
7.3
Good
1,772 reviews
Check prices

Entertainment

7.0

Crew

8.1

Food

6.7

Comfort

7.2

Boarding

7.4

Overall

7.3

Reviews

1 / 20
10.0
Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.
British Airways
6.7
Okay
8,224 reviews
Aer Lingus
7.3
Good
1,772 reviews
Check prices

Entertainment

7.0

Crew

8.1

Food

6.7

Comfort

7.2

Boarding

7.4

Overall

7.3

Reviews

1 / 20
10.0
Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.

Related info for your journey

  • How long is the flight from Birmingham to Seattle?

    A quick flight from Birmingham to Seattle can take about 17h. British Airways provides one of the quickest options available for as low as £518. The distance between Birmingham and Seattle is about 4695 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines flying from Birmingham to Seattle round-trip?

    According to our current data, British Airways (£363), Lufthansa (£392), and Aer Lingus (£521) offers the cheapest pricing from Birmingham to Seattle. Users have found that British Airways is 40% cheaper than the other options available to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Birmingham 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 Birmingham to Seattle?

    Currently, April is the cheapest month in which you can book a flight from Birmingham to Seattle (average of £378). Flying from Birmingham to Seattle in August is currently the most expensive (average of £855). 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
Federal Way
SeaTac

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Birmingham to Seattle

AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£363Average£390FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£392Average£415FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Aer LingusCheapest£521Average£737FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

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

Cheapflights helps you search for flights from Birmingham to Seattle via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Birmingham to Seattle?

Cheapflights helps you find that perfect flight to Seattle from Birmingham by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

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

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Yes! Start tracking prices for Birmingham 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.

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