The cheapest times to fly from CWL to SJC are

  • January 8th to March 11th (except the weeks of February 5th and February 19th)
  • May 7th to July 1st (except the weeks of May 21st and June 18th)
  • September 3rd to December 9th (except the week of October 22nd)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from CWL to SJC is mid January. Prices can be as high as $1498 for Saturday flights during late July, or as low as $486 for Tuesday flights around mid January.


When to Fly to San Jose

Flying from Cardiff (CWL) to San Jose, CA (SJC) will usually cost between $504 to $1069 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid January with an average ticket price of $504. Due to high demand the most expensive time to fly is late July, with an average price of $1196. Planning your trip to low-cost times can easily save you $692 on economy flights and even more on first-class flights. Generally, any price below $611 can be considered a good price for a round-trip CWL to SJC flight.

See below for a graph of average weekly prices for the CWL to SJC route. All prices are for round-trip tickets in USD.

CWL to SJC Flight Prices

Compared to other flights, the CWL to SJC flight is cheaper than the average and costs less than the average flight leaving from Cardiff. The average price per mile (for a direct flight) is $0.07, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Saturdays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $248 (28%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $629. Return trip prices are from the SJC to CWL flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from CWL to SJC can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 10 hour 28 minutes may not be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from CWL to SJC while comparing.

Destination alternative #1: San Francisco International Airport (SFO) in San Francisco, CA

  • 30 miles (48 km) away from SJC
  • Usually 2.38% less expensive than SJC
  • 1-layover flights available

See CWL to SFO flights


Flight Questions Answered

Still have questions about flying from CWL to SJC? We’ve got answers.

Which airlines fly this route?

You can find 9 major airlines flying this route most often: Aer Lingus, Air France, American, British Airways, Delta, KLM, Royal Air Maroc, United, Virgin Atlantic, and potentially more during busy seasons.

How far away is it from Norman Y. Mineta San Jose International Airport to Cardiff Airport?

The distance between the two airports is roughly 5270 miles or 8481 kilometers.

How long does it take to fly from CWL to SJC?

The real-world flight time for a nonstop CWL to SJC flight is about 10 hour 28 minutes.

How many flights go between Cardiff and San Jose, CA?

It depends on the day of the week and the date, but a typical day might have around 6 available flights from CWL to SJC.


Airport Location Info


Departing Airport

Origination codeCWL
Origination airport nameCardiff Airport
Countrythe United Kingdom

Return Airport

Destination codeSJC
Destination airport nameNorman Y. Mineta San Jose International Airport
CitySan Jose, CA
Countrythe United States


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.