The SKA1 is run by Koleje Małopolskie on its own tariff, so a KMK single (PLN 6), a 24-hour ticket (PLN 25) or a Kraków Card season does not pay for it: the airport fare is PLN 20 on top. The ticket that looks like it should work — the 70-minute KMK+KMŁ combined ticket at PLN 10 — is valid on KMŁ trains only around stations with 'Kraków' in the name, excluding Kraków Airport. Riding without a valid ticket carries a PLN 400 charge.
Plenty of guides still send you to 'bus 208 or 252'. The airport's own page lists exactly three lines: 209 and 300 by day and the night line 902, all run by MPK as agglomeration lines. Turning up looking for 208 or 252 means watching the right bus leave without you.
Three tickets come in a zone-I-only version that does not reach the airport, which sits in zone II: the 24-hour (PLN 20 against PLN 25), the 7-day (PLN 65 against PLN 80) and the group ticket for up to 20 people (PLN 50 against PLN 60). The time tickets are all valid across I+II+III, but bus 300 takes about 24 minutes to its terminus, so the 15-minute one expires on the way.
Kraków Airport Taxi is the only official taxi at the airport, its cars wait under cover at the terminal, and the flat price to the centre is PLN 89–109. Anyone offering you a ride inside the arrivals hall is naming their own price, and travellers report being charged PLN 200–350 for a trip the official tariff prices below PLN 110.
Kraków Lotnisko station is behind the multi-storey car park, reached from the terminal by a covered footbridge — go up from arrivals and follow the 'Kolej' signs. Uber and Bolt cannot collect you at the kerb either: the apps send you to a designated pickup zone and tell you to allow time to walk there.