Cheap flights from Seattle, WA to Cardiff

Flights starting at $595. Choose between Ryanair, Aer Lingus, or British Airways to find the best price.

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How much do flights to Cardiff cost?

Key info about flying to Cardiff

Depart from
Seattle–Tacoma International
Arrive to
Cardiff
Average flights per week
275
Flight distance
Worth visiting
St. David's Cathedral, Cardiff - Roman Baths, Bath - Brecon Beacons - Avebury - Stonehenge - Tintern Abbey, United Kingdom - St Fagans: National History Museum

Check-in for a flight from Seattle to Cardiff

NameCarrier codeIATA CodePassport needed during booking
RyanairRYRFRNo
Aer LingusEINEINo
British AirwaysBAWBANo
easyJetEZYU2Yes
Virgin Atlantic AirwaysVIRVSYes

Weather in Cardiff

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January7°C3°C
February8°C3°C
March10°C4°C
April12°C5°C
May15°C8°C
June17°C11°C
July19°C13°C
August19°C13°C
September17°C11°C
October14°C9°C
November11°C6°C
December8°C4°C
Hottest Month
19°C
July
Coldest month
3°C
January
Sunny days
263
days per year

14 day forecast

Tuesday
10 Dec
88%
8°C6°C
17 Dec
89%
7°C5°C
Wednesday
11 Dec
7°C3°C
18 Dec
7°C3°C
Thursday
12 Dec
88%
7°C2°C
19 Dec
5°C1°C
Friday
13 Dec
87%
6°C6°C
20 Dec
5°C1°C
Saturday
14 Dec
77%
7°C4°C
21 Dec
82%
4°C1°C
Sunday
15 Dec
86%
11°C6°C
22 Dec
3°C-1°C
Monday
16 Dec
79%
8°C7°C
23 Dec
89%
11°C5°C
Travelers usually depart from Seattle–Tacoma International, or Kenmore Air Harbor Seaplane Base when they travel from Seattle to Cardiff. The most popular airlines for this route are Ryanair, Aer Lingus, British Airways, easyJet, and Virgin Atlantic Airways. Seattle and Cardiff have 275 direct flights per week. When you arrive at Cardiff, consider visiting St. David's Cathedral, Cardiff, Roman Baths, Bath, Brecon Beacons, Avebury, Stonehenge, Tintern Abbey, United Kingdom, and St Fagans: National History Museum.

Frequently asked questions

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