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Flights from London to Seattle (YXU to SEA)

Discover alternate routes & cheap one way flights from London to Seattle (YXU to SEA) within a departure date range.

⭐ Search by country or region to discover cheaper routes you didn't know existed. Example: Netherlands → Italy or Europe → South-East Asia.

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  • USD 406
    Air CanadaAlaska Airlines
    6:00am - 10:46pm
    Wed Apr 17th
    19h 46m
    London (YXU) → Seattle (SEA)
    3 Stops

    Wed Apr 17th 2024 Air Canada · AC 8252 Depart at 6:00am from London (YXU) Fly for 0h 54m Arrive at 6:54am in Toronto (YYZ)

    Layover in Toronto for 2h 6m

    Wed Apr 17th 2024 Air Canada · AC 105 Depart at 9:00am from Toronto (YYZ) Fly for 4h 55m Arrive at 10:55am in Vancouver (YVR)

    Layover in Vancouver for 3h 55m

    Wed Apr 17th 2024 Air Canada · AC 1058 Depart at 2:50pm from Vancouver (YVR) Fly for 2h 45m Arrive at 5:35pm in Las Vegas (LAS)

    Layover in Las Vegas for 2h 24m

    Wed Apr 17th 2024 Alaska Airlines · AS 711 Depart at 7:59pm from Las Vegas (LAS) Fly for 2h 47m Arrive at 10:46pm in Seattle (SEA)

  • USD 420
    Air CanadaAlaska Airlines
    9:45am - 9:46pm
    Wed Apr 17th
    15h 1m
    London (YXU) → Seattle (SEA)
    2 Stops

    Wed Apr 17th 2024 Air Canada · AC 8256 Depart at 9:45am from London (YXU) Fly for 0h 48m Arrive at 10:33am in Toronto (YYZ)

    Layover in Toronto for 2h 17m

    Wed Apr 17th 2024 Air Canada · AC 741 Depart at 12:50pm from Toronto (YYZ) Fly for 5h 37m Arrive at 3:27pm in San Francisco (SFO)

    Layover in San Francisco for 4h 8m

    Wed Apr 17th 2024 Alaska Airlines · AS 1327 Depart at 7:35pm from San Francisco (SFO) Fly for 2h 11m Arrive at 9:46pm in Seattle (SEA)

  • USD 455
    WestJetAlaska Airlines
    3:50pm - 6:59am
    Wed Apr 17th
    18h 9m
    London (YXU) → Seattle (SEA)
    2 Stops

    Wed Apr 17th 2024 WestJet · WS 735 Depart at 3:50pm from London (YXU) Fly for 4h 13m Arrive at 6:03pm in Calgary (YYC)

    Layover in Calgary for 3h 42m

    Wed Apr 17th 2024 WestJet · WS 131 Depart at 9:45pm from Calgary (YYC) Fly for 1h 34m Arrive at 10:19pm in Vancouver (YVR)

    Layover in Vancouver for 7h 41m

    Thu Apr 18th 2024 Alaska Airlines · AS 2414 Depart at 6:00am from Vancouver (YVR) Fly for 0h 59m Arrive at 6:59am in Seattle (SEA)

  • USD 476
    Air CanadaAlaska Airlines
    6:00am - 9:55pm
    Wed Apr 17th
    18h 55m
    London (YXU) → Seattle (SEA)
    3 Stops

    Wed Apr 17th 2024 Air Canada · AC 8252 Depart at 6:00am from London (YXU) Fly for 0h 54m Arrive at 6:54am in Toronto (YYZ)

    Layover in Toronto for 2h 6m

    Wed Apr 17th 2024 Air Canada · AC 404 Depart at 9:00am from Toronto (YYZ) Fly for 1h 18m Arrive at 10:18am in Montreal (YUL)

    Layover in Montreal for 3h 2m

    Wed Apr 17th 2024 Air Canada · AC 8859 Depart at 1:20pm from Montreal (YUL) Fly for 1h 38m Arrive at 2:58pm in Philadelphia (PHL)

    Layover in Philadelphia for 3h 59m

    Wed Apr 17th 2024 Alaska Airlines · AS 443 Depart at 6:57pm from Philadelphia (PHL) Fly for 5h 58m Arrive at 9:55pm in Seattle (SEA)

  • USD 484
    Alaska AirlinesAir Canada
    6:00am - 5:14pm
    Wed Apr 17th
    14h 14m
    London (YXU) → Seattle (SEA)
    3 Stops

    Wed Apr 17th 2024 Air Canada · AC 8252 Depart at 6:00am from London (YXU) Fly for 0h 54m Arrive at 6:54am in Toronto (YYZ)

    Layover in Toronto for 1h 26m

    Wed Apr 17th 2024 Air Canada · AC 1901 Depart at 8:20am from Toronto (YYZ) Fly for 5h 10m Arrive at 10:30am in Victoria (YYJ)

    Layover in Victoria for 1h 30m

    Wed Apr 17th 2024 Air Canada · AC 8154 Depart at 12:00pm from Victoria (YYJ) Fly for 0h 30m Arrive at 12:30pm in Vancouver (YVR)

    Layover in Vancouver for 3h 43m

    Wed Apr 17th 2024 Alaska Airlines · AS 2006 Depart at 4:13pm from Vancouver (YVR) Fly for 1h 1m Arrive at 5:14pm in Seattle (SEA)

  • USD 484
    Air CanadaAlaska Airlines
    6:00am - 7:14pm
    Wed Apr 17th
    16h 14m
    London (YXU) → Seattle (SEA)
    3 Stops

    Wed Apr 17th 2024 Air Canada · AC 8252 Depart at 6:00am from London (YXU) Fly for 0h 54m Arrive at 6:54am in Toronto (YYZ)

    Layover in Toronto for 1h 26m

    Wed Apr 17th 2024 Air Canada · AC 1901 Depart at 8:20am from Toronto (YYZ) Fly for 5h 10m Arrive at 10:30am in Victoria (YYJ)

    Layover in Victoria for 1h 30m

    Wed Apr 17th 2024 Air Canada · AC 8154 Depart at 12:00pm from Victoria (YYJ) Fly for 0h 30m Arrive at 12:30pm in Vancouver (YVR)

    Layover in Vancouver for 5h 43m

    Wed Apr 17th 2024 Alaska Airlines · AS 3432 Depart at 6:13pm from Vancouver (YVR) Fly for 1h 1m Arrive at 7:14pm in Seattle (SEA)

  • USD 489
    WestJetAlaska Airlines
    3:50pm - 6:59am
    Wed Apr 17th
    18h 9m
    London (YXU) → Seattle (SEA)
    2 Stops

    Wed Apr 17th 2024 WestJet · WS 735 Depart at 3:50pm from London (YXU) Fly for 4h 13m Arrive at 6:03pm in Calgary (YYC)

    Layover in Calgary for 0h 57m

    Wed Apr 17th 2024 WestJet · WS 127 Depart at 7:00pm from Calgary (YYC) Fly for 1h 34m Arrive at 7:34pm in Vancouver (YVR)

    Layover in Vancouver for 10h 26m

    Thu Apr 18th 2024 Alaska Airlines · AS 2414 Depart at 6:00am from Vancouver (YVR) Fly for 0h 59m Arrive at 6:59am in Seattle (SEA)

  • USD 493
    Air CanadaAlaska Airlines
    6:00am - 9:41pm
    Wed Apr 17th
    18h 41m
    London (YXU) → Seattle (SEA)
    3 Stops

    Wed Apr 17th 2024 Air Canada · AC 8252 Depart at 6:00am from London (YXU) Fly for 0h 54m Arrive at 6:54am in Toronto (YYZ)

    Layover in Toronto for 2h 6m

    Wed Apr 17th 2024 Air Canada · AC 404 Depart at 9:00am from Toronto (YYZ) Fly for 1h 18m Arrive at 10:18am in Montreal (YUL)

    Layover in Montreal for 2h 52m

    Wed Apr 17th 2024 Air Canada · AC 8940 Depart at 1:10pm from Montreal (YUL) Fly for 1h 50m Arrive at 3:00pm in New York (EWR)

    Layover in New York for 3h 29m

    Wed Apr 17th 2024 Alaska Airlines · AS 477 Depart at 6:29pm from New York (EWR) Fly for 6h 12m Arrive at 9:41pm in Seattle (SEA)

  • USD 504
    WestJet
    3:50pm - 8:01am
    Wed Apr 17th
    19h 11m
    London (YXU) → Seattle (SEA)
    2 Stops

    Wed Apr 17th 2024 WestJet · WS 735 Depart at 3:50pm from London (YXU) Fly for 4h 13m Arrive at 6:03pm in Calgary (YYC)

    Layover in Calgary for 4h 57m

    Wed Apr 17th 2024 WestJet · WS 135 Depart at 11:00pm from Calgary (YYC) Fly for 1h 34m Arrive at 11:34pm in Vancouver (YVR)

    Layover in Vancouver for 7h 16m

    Thu Apr 18th 2024 WestJet · WS 7361 Depart at 6:50am from Vancouver (YVR) Fly for 1h 11m Arrive at 8:01am in Seattle (SEA)

  • USD 520
    Air CanadaAlaska Airlines
    6:00am - 6:45pm
    Wed Apr 17th
    15h 45m
    London (YXU) → Seattle (SEA)
    3 Stops

    Wed Apr 17th 2024 Air Canada · AC 8252 Depart at 6:00am from London (YXU) Fly for 0h 54m Arrive at 6:54am in Toronto (YYZ)

    Layover in Toronto for 3h 1m

    Wed Apr 17th 2024 Air Canada · AC 165 Depart at 9:55am from Toronto (YYZ) Fly for 4h 5m Arrive at 12:00pm in Edmonton (YEG)

    Layover in Edmonton for 2h 15m

    Wed Apr 17th 2024 Air Canada · AC 8137 Depart at 2:15pm from Edmonton (YEG) Fly for 0h 54m Arrive at 3:09pm in Calgary (YYC)

    Layover in Calgary for 2h 51m

    Wed Apr 17th 2024 Alaska Airlines · AS 3443 Depart at 6:00pm from Calgary (YYC) Fly for 1h 45m Arrive at 6:45pm in Seattle (SEA)

  • USD 522
    Air CanadaAlaska Airlines
    6:00am - 6:45pm
    Wed Apr 17th
    15h 45m
    London (YXU) → Seattle (SEA)
    2 Stops

    Wed Apr 17th 2024 Air Canada · AC 8252 Depart at 6:00am from London (YXU) Fly for 0h 54m Arrive at 6:54am in Toronto (YYZ)

    Layover in Toronto for 1h 31m

    Wed Apr 17th 2024 Air Canada · AC 133 Depart at 8:25am from Toronto (YYZ) Fly for 4h 17m Arrive at 10:42am in Calgary (YYC)

    Layover in Calgary for 7h 18m

    Wed Apr 17th 2024 Alaska Airlines · AS 3443 Depart at 6:00pm from Calgary (YYC) Fly for 1h 45m Arrive at 6:45pm in Seattle (SEA)

  • USD 565
    Air CanadaAlaska Airlines
    6:00am - 4:10pm
    Wed Apr 17th
    13h 10m
    London (YXU) → Seattle (SEA)
    2 Stops

    Wed Apr 17th 2024 Air Canada · AC 8252 Depart at 6:00am from London (YXU) Fly for 0h 54m Arrive at 6:54am in Toronto (YYZ)

    Layover in Toronto for 3h 1m

    Wed Apr 17th 2024 Air Canada · AC 165 Depart at 9:55am from Toronto (YYZ) Fly for 4h 5m Arrive at 12:00pm in Edmonton (YEG)

    Layover in Edmonton for 3h 25m

    Wed Apr 17th 2024 Alaska Airlines · AS 2542 Depart at 3:25pm from Edmonton (YEG) Fly for 1h 45m Arrive at 4:10pm in Seattle (SEA)

  • USD 601
    Air CanadaAlaska Airlines
    6:00am - 3:26pm
    Wed Apr 17th
    12h 26m
    London (YXU) → Seattle (SEA)
    2 Stops

    Wed Apr 17th 2024 Air Canada · AC 8252 Depart at 6:00am from London (YXU) Fly for 0h 54m Arrive at 6:54am in Toronto (YYZ)

    Layover in Toronto for 1h 26m

    Wed Apr 17th 2024 Air Canada · AC 1901 Depart at 8:20am from Toronto (YYZ) Fly for 5h 10m Arrive at 10:30am in Victoria (YYJ)

    Layover in Victoria for 3h 55m

    Wed Apr 17th 2024 Alaska Airlines · AS 3322 Depart at 2:25pm from Victoria (YYJ) Fly for 1h 1m Arrive at 3:26pm in Seattle (SEA)

@sarahbb1
Sarah Belizaire
@sarahbb1

Have flexible travel plans or looking for alternative routes given the chaos? Check out all the connection possibilities via a super helpful site created by @ismaelyws flightlist.io thanks to @andy_travels for the recommendation #travel #flights

@eyupitsjohn
John Ford
@eyupitsjohn

There seem to be lots of sites launching at the moment that promise to find you cheap flights but not many have the professional finish of Flightlist by @ismaelyws #travel #flights

@andy_travels
Andy Travels
@andy_travels

@ismaelyws Just tried out Flightlist for the first time. Really nice idea, well made, and just what I need at the moment 👍

@travelwitbender
Travel With Bender
@travelwitbender

Did you spot my recent article about how to score cheap one way flights? ✈️ FlightList is my new secret tool for discovering cheap routes, within a departure date range. Plus you can also search by country/region for departures & destinations. Powerful! 💪

Explore Flight Options

Cheap Flight Search Tips

Tips to help you find the cheapest flights from London to Seattle (YXU to SEA).

  • Book 45-90 days before your departure date.
  • Fly during weekdays (Monday-Thursday).
  • Airfare Sales: Airlines sometimes offer huge discounts and since we take a bottom-up approach these flights will appear first in the results, so check back regularly because they don't usually last long.

Why I Built FlightList

❝As someone who works remotely & travels frequently, I always book one way flights and I'm flexible on my departure dates. I look for the best deals. Most sites require you to enter a specific departure date and clutter the page with uneccessary options, images and ads. I want something simple and minimal which allows me to search by departure date range & display a list of flights with the ability to filter according to my needs. So, I built FlightList to solve my own problem & help other travelers who may have the same frustration. It's how I imagine a flight booking site should be.❞

- Hans Desjarlais, Founder & Creator Hans Desjarlais