The most direct route in getting to Ireland and the start of the Kerry Way is to fly to Kerry Airport in Faranfore which is 15km from Killarney. Due to the small size of the airport however there are a limited amount of flights that land here. Ryanair are the only airline currently using Kerry Airport. They have flights from Dublin, Frankfurt, Luton and Stansted.
Bus Éireann's No.14 service from Limerick to Killarney stops at Kerry Airport once every hour or two, between 12:00 and 22:00. The journey takes around 30 minutes.
Shannon Airport is approximately 85km from Killarney. The airport is substantially larger than the one at Kerry and is a major hub for trans-Atlantic flights. The main airlines flying to Shannon from the United States and Canada are Aer Lingus, Air Transat, Continental Airlines, Delta Airlines and US Airways.
Shannon Airport also has a lot of flights from mainland Europe. Ryanair have an extensive list of linking airports throughout the European Union. Other airlines include Aer Lingus and Air France.
There is a frequent No.16 service offered by Bus Éireann between Shannon Airport and Killarney with a changeover in Limerick. The overall journey can take anywhere between 2½-4½ hours, depending on the changeover.
Cork Airport is around 90km from Killarney. It receives flights from all over Europe with the prominent countries being France, Germany, Italy, Poland, Portugal, Spain and the UK. The main airlines to research for flights on are Aer Lingus, Aer Arann, Air France, Air South-West, BMI Baby, Jet 2, Ryanair and Wizz Air.
No trans-Atlantic flights currently land at Cork Airport.
Bus Éireann's No.226 or Sky Link's No.1 take around 30 minutes to reach the Cork City Centre. A connecting bus or train can then be taken to Killarney. Bus Éireann's No.40 from Rosslare Harbour to Tralee can take between 1½-2 hours depending on the amount of scheduled stops. Irish Rail's trains take a similar amount of time depending on whether a changeover is necessary.
Dublin Airport is around 320km from Killarney. This is Ireland's busiest airport which served 206 routes using 76 different airlines in 2008. Flights arrive from all over Europe, North America, the Middle East and North Africa. Some of the more popular airlines to use Dublin Airport would be Aer Lingus, Aer Arann, Air France, BMI Baby, City Jet, Lufthansa, Ryanair and Scandinavian Airlines.
The quickest (and potentially the cheapest) way to get from Dublin Airport to Killarney would be to take a connecting flight with Ryanair to Kerry Airport. It is highly advised to try and book a flight well in advance to guarantee the best fare if considering this option.
Alternatively, Airlink's No.747 and No.748 buses have a frequent service to Dublin city centre from where a linking bus or train can be caught to Kerry. Expect a 3½ hour train journey from Dublin's Heuston Station to Killarney. The other option is a 3½ hour bus journey from Dublin's Busáras Station to Limerick on the No.12, with a further 2 hours from Limerick to Killarney on the No.14.