Seen below, we found seats departing PHL on Monday, August 13, returning from SNN on Tuesday, August 21, 2018.
Flights are also available for Spring travel dates from April 3 through May 17, then again from August 13 onward through September 30, 2018. Fares are available any day of the week and require a 7-day minimum stay.
Have a look at our Philadelphia fare deals page for more offers departing PHL.
Need a hotel in Shannon? Here's a look at what's available for the above dates on Hotelwatchdog.
Stay on top of breaking airfare deals as we find them! Follow @airfarewatchdog on Twitter.