Istanbul has two airports on opposite sides of the city: Istanbul Airport (IST) on the European northwest and Sabiha Gokcen (SAW) on the Asian southeast, roughly 90 km apart. The direct HAVAIST coach takes a minimum of 1 hour 50 minutes, often 2.5 hours or more in heavy traffic, for around 310 TRY (about 6 EUR). If your two flights are on separate tickets, give yourself a wide margin. And if the gap is long enough, you can clear immigration, see the old city, and even take a free Turkish Airlines tour.
Getting between IST and SAW
The simplest link is the direct HVIST-13 HAVAIST coach between the two airports. It runs 24/7, departs roughly every 90 minutes, and costs about 310 TRY (around 6 EUR), payable by the HAVAIST app QR code, a contactless card on board, or an Istanbulkart. At IST you board on the transport level (Level -2); at SAW it stops outside the terminal alongside the other HAVAIST and Havabus coaches. It is run by the same operator as the city HAVAIST lines, so you can pre-buy on the HAVAIST app and scan a QR code, or simply tap a card at the door. It is the cheapest and least stressful way across, but it is a long, direct ride that can stretch past 2.5 hours in traffic, so build in a buffer.
If the coach schedule doesn't fit your flights, here are the alternatives:
- Metered taxi: the priciest choice, roughly 3,500-5,000 TRY (about 65-95 EUR), because the meter runs the full 90 km plus the Bosphorus crossing toll (the Yavuz Sultan Selim bridge or the Eurasia Tunnel). Worth it mainly if you are splitting the fare or short on time. Our Istanbul airport taxi guide covers the meter, the no-night-surcharge rule and the scams.
- Pre-booked private transfer: a fixed price set before you fly. For tight connections this is the safer call: book through our partner GetTransfer.com and the driver tracks your flight, meets you at arrivals and runs door-to-door, skipping the taxi queue entirely. Compare it on our transfer page.
- Public transport (metro plus Marmaray): technically possible, but a multi-leg chain across the city with luggage is slow and awkward. For an airport-to-airport move the coach wins every time.
If you are self-transferring on separate tickets, you collect your bags and re-check them, and nobody re-books you if you miss the second flight. Plan generously. Many travellers leave at least six hours between landing at one airport and departing the other, and more in morning or evening rush. As a concrete check: land at SAW around 14:00 and a 19:00 departure from IST is genuinely tight once you add bag reclaim, the cross-city ride and the international check-in window; a flight after 21:00 is the comfortable version of that plan. Bags through-checked on a single ticket make the connection easier, but the cross-city distance does not change.
How long a layover do you need to leave the airport?
Leaving the airport means entering Turkey, so the first question is the visa. As of 2026, US, UK and most EU passport holders enter visa-free for tourist stays of up to 90 days. Other nationalities need a Turkish e-Visa (around 50-60 USD); since Turkey scrapped visa-on-arrival, you must buy it online in advance at the official portal, evisa.gov.tr, where it is usually approved within minutes and a screenshot is enough at immigration. Check your own nationality there before you plan to leave. If you stay strictly inside the international transit area and do not enter the country, no visa is needed for a layover under 24 hours.
With the paperwork sorted, the deciding factor is time. A realistic guide by layover length:
- Under 6 hours: stay airside. Immigration queues and unpredictable traffic eat the margin, and a missed onward flight is not worth the risk. Rest, eat, and use the lounges. If you land overnight, our late-night arrivals guide covers what runs and where to wait.
- 7 to 8 hours: enough to reach the historic Sultanahmet district, see the Blue Mosque area or Hagia Sophia, and get back. Reckon about 45 to 60 minutes each way from IST; the airport-to-city comparison shows the fastest route.
- 10 hours or more: comfortable to leave and explore at a normal pace, or take the free tour below.
Either way, store your bags in the airport left-luggage office so you can explore hands-free, and keep a firm buffer for the return queues at security.
Can you see Istanbul on a layover for free?
Yes, if you fly Turkish Airlines. TourIstanbul is a free guided city tour for international-to-international connecting passengers with a layover of 6 to 24 hours at IST. The conditions are specific: both flights on the same booking (PNR), a Turkish Airlines ticket, and flight times that fit a tour slot. Check in at the Touristanbul desk on the Arrivals level at least 30 minutes before the tour leaves. Several routes cover the historic peninsula, taking in Hagia Sophia, Topkapi Palace and the Sultanahmet mosque, with a Bosphorus view. Confirm the current schedule on turkishairlines.com, since the timetable was refreshed in 2026.
For a longer gap, the Turkish Airlines Stopover programme offers a free hotel night (one night in Economy, two in Business) on international connections of 20 hours or more through IST. It depends on your departure and destination countries being on the airline's approved list, and you apply at least 72 hours before your first flight. You can use TourIstanbul or Stopover, not both, on the same layover, and both run from IST only, not SAW; from Sabiha Gokcen your realistic option is your own time rather than an airline tour.
Istanbul layover itineraries on a short connection
An eight-hour layover sounds generous, but the clock starts at the gate, not in town. Budget roughly an hour to clear immigration and reach the centre, two to three hours on the ground, and an hour back, then the airport's own security and boarding window. That leaves a focused single-neighbourhood visit rather than a full city tour, so pick one area and do it well.
The efficient plan from IST: take a taxi or the metro and connect toward the old city, then walk the Sultanahmet cluster, where the Blue Mosque, Hagia Sophia and the Topkapi Palace gardens sit within a few minutes of each other. Skip anything with a long queue or a timed ticket. From SAW the closest worthwhile stop is Kadikoy on the Asian side, a lower-stress choice when your connection is shorter. For the quickest door-to-centre route from either airport, the all-options comparison lays out the timings.
Which option fits your connection?
Match the plan to your gap and stop at the first that fits:
- Connecting between the airports: the HAVAIST coach when you have hours to spare, a pre-booked transfer when you do not. A fixed-price car that meets your flight is the safer call when the connection is tight.
- A 7 to 8 hour layover and you want the city: sort the e-Visa, drop your bags, and take a taxi or the metro to Sultanahmet and back. Check our IST and SAW guides for the arrivals layout.
- 6 to 24 hours on Turkish Airlines: the free TourIstanbul tour is hard to beat.
- Overnight or very early: wait it out airside and travel in once daytime service resumes.
Whatever the gap, confirm the visa rules for your nationality and the live coach times before you rely on them, and never cut an airport-to-airport connection fine. For specific routes into town, the planner on our SAW to Taksim page and the FAQ fill in the detail.