The cheapest times to fly from SNN to SJC are

  • February 12th to March 4th
  • April 2nd to June 24th (except the week of May 21st)
  • September 3rd to December 9th (except the weeks of October 22nd and November 26th)

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 SNN to SJC is late September. Prices can be as high as $1312 for Sunday flights during early August, or as low as $649 for Wednesday flights around late September.


When to Fly to San Jose

Flying from Shannon (SNN) to San Jose, CA (SJC) will usually cost between $678 to $1162 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late September with an average ticket price of $691. Due to high demand the most expensive time to fly is early August, with an average price of $1221. Planning your trip to low-cost times can easily save you $531 on economy flights and even more on first-class flights. Generally, any price below $750 can be considered a good price for a round-trip SNN to SJC flight.

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

SNN to SJC Flight Prices

Compared to other flights, the SNN to SJC flight is cheaper than the average and costs less than the average flight leaving from Shannon. The average price per mile (for a direct flight) is $0.09, which is far below average.


Flight Prices by Day of the Week

Wednesday is usually the cheapest day to depart and return on this flight. Sundays are the most expensive days to fly to San Jose, and Saturdays are the most expensive days to return to Shannon. Selecting flights on the least expensive days could save you up to $74 (7%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Wednesday and returning a week later will cost an average of $776. Return trip prices are from the SJC to SNN 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 SNN to SJC can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 10 hour 3 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 SNN to SJC while comparing.

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

  • 30 miles (48 km) away from SJC
  • Usually 23.07% less expensive than SJC
  • 1-layover flights available

See SNN to SFO flights


Flight Hacking SNN to SJC

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from SNN to SJC — but Champion Traveler does!

Hack #1: London (SNN > LGW > SJC)

  • Price for both tickets: $564
  • Average savings: $186 (24.8%)

See SNN to LHR flights

Hack #2: London (SNN > LHR > SJC)

  • Price for both tickets: $624
  • Average savings: $127 (16.87%)

See SNN to LGW flights

Hack #3: Birmingham (SNN > BHX > SJC)

  • Price for both tickets: $704
  • Average savings: $47 (6.2%)

See SNN to BHX flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 14 major airlines flying this route most often: Aer Lingus, Air Canada, Air France, Alaska, American, British Airways, Delta, Finnair, Iberia, JetBlue, KLM, Lufthansa, Singapore Airlines, United, and potentially more during busy seasons.

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

The distance between the two airports is roughly 5034 miles or 8101 kilometers.

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

The real-world flight time for a nonstop SNN to SJC flight is about 10 hour 3 minutes.

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

It depends on the day of the week and the date, but a typical day might have around 18 available flights from SNN to SJC.


Airport Location Info


Departing Airport

Origination code SNN
Origination airport name Shannon Airport
City Shannon
Country Ireland
Latitude 52.7
Longitude -8.9

Return Airport

Destination code SJC
Destination airport name Norman Y. Mineta San Jose International Airport
City San Jose, CA
Country the United States
Latitude 37.4
Longitude -121.9


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.