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Cardiff to Seattle flights

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Discover the cheapest flights from Cardiff to Seattle
Thu 3 Dec - Fri 11 Dec
BA
BADirect
CWL - SEA
BA
BADirect
SEA - CWL
931£
920£
Prime price per passenger
Sun 13 Dec - Mon 21 Dec
BA
BADirect
CWL - SEA
IB
IBDirect
SEA - CWL
1448£
1438£
Prime price per passenger
The prices shown on this page were available within the last 20 days for the specified periods and should not be considered the final price offered. Please note that availability and prices are subject to change.

Cheapest time to fly from Cardiff to Seattle

If you’re planning to fly this route soon, keep in mind that the lowest fares are usually available in the middle of November. Take advantage of this period to save on your flight tickets and make the most of your trip. Please note that prices may change after your search.
Filter by
week: 9 Nov - 15 Nov
Flights from just £536
£590
£536
£601
£553
OctoberNovemberDecember
Flight Time12 h and 45 mFlights from Cardiff and Seattle last around 12 h and 45 m, although this flight time may also depend on other factors.
Cheapest flight£920The cheapest price available for flights from Cardiff to Seattle that have been booked by our customers in the last 72 hours
Origin airportCardiff AirportWhen flying from Cardiff to Seattle
Destination airportSeattle-Tacoma International AirportFor the route from Cardiff to Seattle
Peak seasonMarchAccording to search data from our customers, March is the busiest time to fly from Cardiff to Seattle
Average price of one-way£1557Average flight price from Cardiff - Seattle at eDreams is £1557, which is averaged from the last 6 months of data
Best time to bookSeptemberData from our customers tells us that September is the most popular time to fly to Seattle from Cardiff
Exchange rate
1 GBP = 1.34 USD
1 USD = 0.75 GBP
Last revised on Sun 01/11
Distance: 4,704 mi
Cardiff airports
Cardiff Airport (CWL)How far from city centre: 10 mi
Seattle airports
Seattle-Tacoma International Airport (SEA)How far from city centre: 11 mi

Book a flight from Cardiff to Seattle

eDreams lists every direct and indirect flight from Cardiff to Seattle (United States) in one place. Once your results are in, sort by schedule or price and book whichever suits your plans best.

Recently, the lowest fare on this route was £920, though your own price will depend on your travel dates and departure times.

Flying direct from Cardiff to Seattle takes around 12 h and 40 m; indirect flights take longer.

Cardiff to Seattle: airports and airlines

It helps to know exactly where you're departing from and arriving at before you book. Take a look at the airports involved and compare the airlines flying this route.

  • Departure airport: Cardiff Airport (CWL)
  • Arrival airport: Seattle-Tacoma International Airport (SEA)

Seattle weather

The time of the year when you decide to travel may come down to the kind of climate you prefer. Seattle sees average temperatures of around 23ºC in the warmest months, falling to 2ºC in the coldest. Bear this in mind when you pack or plan anything outdoors.

  • Highs: as much as 25ºC
  • Lows: as little as 2ºC
  • Hottest month: August
  • Coldest month: December
  • Driest month: July
  • Wettest month: November

How to find a cheaper flight from Cardiff to Seattle

The following tips can help you find a cheaper flight from Cardiff to Seattle:

  • Flexible dates: compare fares across two or three different departure days. Flying a day earlier or later can sometimes shave a good amount off the price.
  • Baggage allowance: check exactly what each fare includes before you book, so you don't get caught out by extra charges at the airport.
  • Airports on your route: double-check which airports you'll depart from and land at, particularly if the city has more than one. This makes it easier to plan your transfer and work out your total travel cost.

Are you looking for a bigger saving? Book a Flight + Hotel package to bundle both together in one booking and unlock exclusive discounts on your stay in Seattle. Adding a hire car to the same booking can bring extra savings too.

FAQs about flights from Cardiff to Seattle

What are the advantages of purchasing flexible flight tickets to Seattle through eDreams UK?
With a flexible flight ticket, you're assured a refund or the option to rebook without any additional fees if your flight from Cardiff to Seattle gets canceled. eDreams UK has got you covered, ensuring peace of mind and hassle-free travel changes! Plus, this flexibility allows you to adapt your travel plans with ease, offering greater convenience in today’s unpredictable travel environment.
What is the average cost for flights from Cardiff to Seattle?
The typical cost for a flight from Cardiff to Seattle is approximately £1557. It's important to note that this price can fluctuate based on various factors, including the time of year and how far in advance you book your ticket. For instance, booking during peak travel seasons or last minute may result in higher fares, while off-peak times might offer more affordable options.
How can I search for and book flights from Cardiff to Seattle on eDreams UK, and also find the best deals?
With our flight search engine, you can discover flights starting at just £920 for the route from Cardiff to Seattle. At eDreams UK, our priority is to offer you the most affordable options. You have the flexibility to customize your search based on various criteria, including stopovers, airports, travel dates, and additional filters. This way, you can tailor your journey to meet your specific needs and preferences, ensuring a seamless travel experience.
When is the best time to book a flight ticket from Cardiff to Seattle?
The top months for booking flights from Cardiff to Seattle are April, May and September. Travelers often find the best deals and optimal flight options during these times, making them ideal for planning your trip.
What are the best months to book a flight from Cardiff to Seattle?
The best time to fly to Seattle from Cardiff really hinges on various personal preferences, particularly regarding budget considerations. In terms of popularity, September stands out as the top month for flights to Seattle from Cardiff, as indicated by our customer search data. Following closely are June and December. If your goal is to escape the hustle and bustle of peak season and find a more tranquil experience, consider traveling during April, May or February. These months are associated with significantly fewer searches, making them a great choice for those seeking a quieter getaway from Cardiff to Seattle.
How long does it take to fly from Cardiff to Seattle?
The average flight time from Cardiff to Seattle is approximately 12 h and 45 m. This journey typically covers a distance of about 4,703.85 mi. Please note that the flights along this route may include one or more layovers in different cities.

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