SEA - CWL

$751 Find Cheap Flights from Seattle to Cardiff

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Cardiff departing on 4/21. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Cardiff

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Cardiff, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Cardiff, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$751
Multiple Airlines
Tue 4/21Thu 4/30
SEA - CWL • 1 stop
Cheapest one-way
$1,269
Multiple Airlines
Thu 2/19
SEA - CWL • 3 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Cardiff!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Cardiff (SEA-CWL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Cardiff that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Cardiff

Tue, Apr 21 - Thu, Apr 30
Multiple Airlines Logo
6:55 pm - 11:25 pm
SEA
-
CWL
20h 30m1 stop
Multiple Airlines Logo
10:25 pm - 7:52 pm
CWL
-
SEA
29h 27m2 stops
$751Multiple Airlines
Tue, Apr 21 - Thu, Apr 30
KLM Logo
5:30 pm - 4:45 pm
SEA
-
CWL
15h 15m1 stop
KLM Logo
9:45 am - 4:30 pm
CWL
-
SEA
14h 45m1 stop
$778KLM
Sun, May 10 - Sat, May 16
KLM Logo
5:30 pm - 4:45 pm
SEA
-
CWL
15h 15m1 stop
KLM Logo
5:35 pm - 4:30 pm
CWL
-
SEA
30h 55m1 stop
$828KLM
Mon, Mar 23 - Sun, Mar 29
Multiple Airlines Logo
4:00 pm - 9:50 am
SEA
-
CWL
34h 50m1 stop
Multiple Airlines Logo
5:15 pm - 4:30 pm
CWL
-
SEA
31h 15m1 stop
$867Multiple Airlines
Sun, May 10 - Sat, May 16
Virgin Atlantic Logo
7:20 am - 9:15 am
SEA
-
CWL
17h 55m2 stops
Virgin Atlantic Logo
9:45 am - 4:30 pm
CWL
-
SEA
14h 45m1 stop
$877Virgin Atlantic
Thu, Feb 19 - Thu, Feb 26
Delta Logo
8:30 am - 4:45 pm
SEA
-
CWL
24h 15m2 stops
Delta Logo
10:20 am - 10:05 pm
CWL
-
SEA
19h 45m2 stops
$879Delta
Thu, Feb 19 - Thu, Feb 26
KLM Logo
3:05 pm - 9:50 am
SEA
-
CWL
34h 45m1 stop
KLM Logo
5:25 pm - 11:40 am
CWL
-
SEA
26h 15m1 stop
$961KLM
Thu, Feb 19 - Thu, Feb 26
KLM Logo
3:05 pm - 9:50 am
SEA
-
CWL
34h 45m1 stop
KLM Logo
5:25 pm - 2:44 pm
CWL
-
SEA
29h 19m2 stops
$971KLM
Sun, May 10 - Sat, May 16
Virgin Atlantic Logo
7:20 am - 9:15 am
SEA
-
CWL
17h 55m2 stops
Virgin Atlantic Logo
9:45 am - 10:05 pm
CWL
-
SEA
20h 20m2 stops
$1,012Virgin Atlantic
Tue, Apr 21 - Thu, Apr 30
KLM Logo
7:23 am - 9:15 am
SEA
-
CWL
17h 52m2 stops
KLM Logo
9:45 am - 9:49 pm
CWL
-
SEA
20h 04m2 stops
$1,108KLM
Booking Insights

Good to know

Cheapest flight$751
Flight from Seattle to Cardiff

When to book flights from Seattle to Cardiff

Are your dates flexible? Find out the best times to travel from Seattle to Cardiff based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to Cardiff

  • What is the cheapest flight from Seattle to Cardiff?

    In the last 3 days, the lowest price for a flight from Seattle to Cardiff was $751 for a round-trip ticket.

  • Do I need a passport to fly between Seattle and Cardiff?

    A passport is required to fly from Seattle to Cardiff.

  • Which aircraft models fly most regularly from Seattle to Cardiff?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Seattle to Cardiff?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Cardiff.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Cardiff?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Cardiff from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Cardiff?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Cardiff with an airline and back to Seattle with another airline. Booking your flights between Seattle and CWL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Cardiff?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Cardiff from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Seattle to Cardiff

Information on your arrival and departure airports

Seattle (SEA)
Cardiff (CWL)