Photo from Wikimedia Commons
Choose the airport with the better flight-plus-ground option for your Kadıköy stay. A lower fare is worthwhile only if the onward journey works at your arrival hour and the extra time or transfers suit you.
Photo from Wikimedia Commons
CONTENTS
Make the two flight offers comparable first
IST is Istanbul Airport; SAW is Istanbul Sabiha Gökçen International Airport.
Compare offers for the same dates and passengers, including the cabin and checked baggage you need. Add any required bag charge before comparing prices: a cheaper headline fare can lose its advantage once luggage is included. There is no fixed saving or break-even point without the actual offers.
Then add the ground cost for the whole party. Metro and bus budgets need enough fares for everyone; a taxi comparison needs a price for your group and luggage. Include any paid onward leg to the accommodation, rather than ending the calculation at a Kadıköy stop.
Keep the cash saving separate from time and physical effort. Decide whether it is worth a longer wait, extra changes or carrying bags along the route. The next sections establish what the transport figures cover and which services need checking for your arrival.
The Kadıköy ground options at a glance
| Airport | Option | Kadıköy end | Published ride time | Published fare |
|---|---|---|---|---|
| SAW | M4 metro | Kadıköy station | 52 min line journey | — |
| SAW | Havabus | Rıhtım İETT stops by the pier | About 60 min, traffic-dependent | TL 300 |
| IST | Havaist | Exact alighting stop to confirm | — | TL 468 |
These bus fares and the Havabus schedule were checked on 19 October 2026; the sources give no effective date. A dash marks an unverified figure, not a zero cost. Confirm current fares before booking; the M4 base fare and Havaist ride duration are not established here.
At SAW, M4 entrance No. 3 is at the terminal, while Havabus boards outside the arrivals-floor exits. At IST, Havaist boards on the -2 transportation floor at bay 14. Credit cards are accepted on board; cash and Istanbulkart acceptance are unconfirmed.
For the full ground journey, add airport exit time, the walk to the boarding point, waiting and the final leg to your actual address. The table’s M4 line journey and Havabus ride estimate exclude these parts. Check the walk from arrivals to the metro and the onward walk or transfer from the Kadıköy stop for your booking; neither is timed here. The M4 connects with T3 and ferries at Kadıköy, and with Marmaray at Ayrılık Çeşmesi. Other lodging districts need their own route comparison.
M11 serves IST but has no Kadıköy station, so a rail journey needs at least one transfer. Its onward connection chain, timetable and total journey time still need confirmation.
Taxis operate at both airports around the clock. The cited airport pages give no Kadıköy fare, so obtain a fare and journey-time estimate for your party and luggage. At IST, bridge tolls and paid motorway charges are added separately.
Match the route to your arrival time
M4’s regular hours are 06:00–00:00. The five-minute frequency applies in peak hours; the cited line page gives no off-peak frequency.
Night metro operates on Friday-to-Saturday and Saturday-to-Sunday nights on seven Metro İstanbul lines, including M4. The cited information does not establish the exact final night train or Sunday cutoff, or a night-time frequency. Some entrances and exits close at night, so confirm the late service and a usable entrance for your date with Metro İstanbul. Outside those two nights, regular hours apply unless the operator announces otherwise. T3 is not part of regular night metro; its extra trips are listed only for special-event or council-decision days.
The night fare is a separate rule: turnstile entry from 00:30 to 05:30 costs double the passage fare under the tariff for your card, with the normal tariff resuming at 05:30. This is not a final-train boundary. It covers the seven night-metro lines, not M11, Havabus, Havaist or T3. Without a verified M4 base fare, no TL total for the night trip can be given.
The published Havabus timetable starts at 05:45, runs roughly every 45 minutes for much of the day and lists its last departure at 01:30. The additional services listed for delayed flights between 01:00 and 04:00 have no fixed departures; they do not establish an all-night schedule. Confirm the departure that fits your landing and airport exit.
For Havaist from IST, confirm the timetable, first and last departures, Kadıköy alighting stop and ride duration for your date. Ask Havaist or the airport for current times, as weekday, Saturday and Sunday departures can differ. If this bus leg remains uncertain, compare another confirmed ground option before choosing the flight.
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