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Connecting route · United Kingdom → United States

Flights from Cardiff to Seattle

There are no direct flights from Cardiff to Seattle. The fastest way is one stop via Amsterdam or Toronto, about 14h 22m door to door (9 connections a week on current schedules).

No direct flights · 4 connection options From 12h 23m
CWLSEAAMS

Cardiff to Seattle at a glance

Fastest journey12h 23mVia Amsterdam, on current schedules
Nonstop flightsNoneConnect via Amsterdam or Toronto

Best ways to fly from Cardiff to Seattle

Ranked by how easy the connection is: one airline or alliance first (bags and connection protected), then the quickest self-transfer options.

1
CWL Amsterdam (AMS) SEA
Leg 1: KLM, KLM Cityhopper · Leg 2: Delta Air Lines, Xiamen Airlines
Tue10:00 CWL12:06 AMS3h 09m connection15:15 AMS16:22 SEAKLM + Delta Air Lines
7 connections a week Same alliance Fastest 14h 22m
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2
CWL Toronto (YYZ) SEA
Leg 1: WestJet · Leg 2: Air Canada, Alaska Airlines
Tue11:45 CWL14:26 YYZ5h 34m connection20:00 YYZ22:04 SEAWestJet + Air Canada
2 connections a weekSelf-transfer likely Fastest 18h 19m
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3
CWL London (LHR) SEA
Leg 1: British Airways · Leg 2: Alaska Airlines, British Airways, Delta Air Lines
One airline, one ticket ~12h 23m
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4
CWL Dublin (DUB) SEA
Leg 1: Ryanair · Leg 2: Aer Lingus
Self-transfer likely ~12h 58m
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Connections are computed from flights actually flown over the last 8 weeks, with at least 45 minutes to change on one airline and 2 hours on separate tickets. Times are local. The search shows live itineraries and exact times.

Good to know

Distance
7,570 km4,701 miles
Journey time
12h 23mon current schedules
Time difference
-8hSeattle vs Cardiff
Currency in Seattle
USD
Airports
CWL → SEA, BFI

Flights from Cardiff to Seattle: questions answered

Are there direct flights from Cardiff to Seattle?
No. There is no nonstop service, so you will connect, most easily in Amsterdam, Toronto and London. Some connections are on one airline or alliance, so your bags and connection are protected on a single ticket.
How long is the flight from Cardiff to Seattle?
With one connection the journey usually takes around 12h 23m, depending on the layover. The straight-line distance is 7,570 km.
Where do you change planes between Cardiff and Seattle?
The best connecting points are Amsterdam (AMS), Toronto (YYZ), London (LHR) and Dublin (DUB). Compare one-ticket itineraries with self-transfer options in the search.
Which airports serve Cardiff and Seattle?
Cardiff: Cardiff International Airport (CWL). Seattle: Seattle–Tacoma International Airport (SEA) and King County International Airport - Boeing Field (BFI).
What is the time difference between Cardiff and Seattle?
Seattle is 8 hours behind Cardiff.

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