Leaving the airport is worth it, if the numbers work

There is a specific kind of regret available at Istanbul Airport: sitting in a terminal for nine hours, forty kilometres from Hagia Sophia, because you were not sure whether you had time. It is avoidable, and the way to avoid it is to do the sum properly before you land rather than anxiously at the baggage carousel.

First: are you allowed out?

Two checks, both of which take five minutes and both of which have to be done before you leave home.

Entry requirements. Whether you need a visa for Turkey, and whether you can get one electronically, depends entirely on your nationality — many passports enter visa-free for short stays, many others use an online e-visa, and some require an application in advance. Check the official Turkish e-visa service for your own passport. A transit passenger who never leaves the international zone does not need one; a transit passenger who wants to see the Blue Mosque does.

Your ticket. If both flights are on one booking, your bags are almost certainly checked through and you are free to walk out with hand luggage. If you booked two separate tickets, you will have to collect your bag, clear customs and check in again from the public hall — which costs you an hour at each end and changes the sums below considerably.

The arithmetic: how long is long enough

The honest thresholds, assuming a single through-ticket and hand luggage only:

The single number people get wrong is the return. Budget three hours between leaving the city and your departure time, not two: the journey back, security, passport control and the walk to a gate at an airport this size. If that feels excessive, it is because you have not seen the queue at Istanbul Airport passport control at seven in the evening.

Which airport you are at changes everything

This is not a detail. Istanbul's two airports are on opposite sides of a very large city and opposite sides of the Bosphorus.

Istanbul Airport (IST) — European side

The M11 metro from the terminal into the city, changing onto the wider metro network, is the reliable route: it is not affected by traffic, which is the only thing that matters when you have a plane to catch. The Havaişt coaches run to Taksim and are easier with luggage but sit in the same jam as everyone else. Reckon on roughly an hour each way to the central districts, more at rush hour by road.

Sabiha Gökçen (SAW) — Asian side

Further out and on the wrong side of the water for most of the sights. The M4 metro now runs from the terminal to Kadıköy; from there a ferry across to Kabataş or Eminönü is the fastest and much the best-looking way to finish. Havabus coaches also run to Kadıköy and Taksim. Reckon on ninety minutes each way to the historic peninsula and plan accordingly.

The full picture of how the lines connect is in our Istanbul transport guide; the one thing to take from it here is that you want an İstanbulkart in your hand within five minutes of clearing arrivals.

Four plans, by hours available

Six to eight hours: one neighbourhood

Take the metro in, go to Sultanahmet on the T1 tram, and accept that you are seeing the outside of things. Hagia Sophia and the Blue Mosque face each other across a park; the Basilica Cistern is a hundred metres away; the Hippodrome is underfoot. Do not attempt Topkapı — it is a three-hour palace and you do not have three hours. Eat something near the tram, get back on it, go.

Eight to twelve hours: the old city plus the water

Same start, but add the part that makes Istanbul itself rather than a collection of monuments. From Sultanahmet, ride the tram down to Eminönü, walk through the Spice Bazaar, and take a public ferry across to Kadıköy or Üsküdar and back. Twenty minutes each way, the price of a bus ticket, and the whole skyline from the deck. If your connection is in the afternoon, do the ferry at the end so you cross in the low sun.

Twelve hours or more, ending in the evening

Now you have the version of this city that most day-trippers never see, because the interesting shift happens at dusk: the monuments close, the waterfront lights come on, and the strait — which is grey and busy and industrial in daylight — turns into the thing on the postcards.

Spend the afternoon in the old city, come down to the water by early evening, and put the last stretch on the Bosphorus itself. Our own sailing leaves Kabataş at 21:00 and is alongside again between 23:45 and midnight — three hours, dinner, the Turkish night show, and the palaces lit from the water. At €24.30 all in, paid on board with nothing in advance, it is also the only plan on this page you can cancel free of charge two hours beforehand if your inbound flight goes wrong — which, on a layover, is not a small thing.

The maths only works for a genuine overnight or an onward flight after about 03:00. Check that first, then read how the evening runs.

Overnight: sleep in the city

If you have a full night, leave. Hotels in Sultanahmet, Karaköy and around Taksim are plentiful and reasonable, the difference in sleep quality against a terminal bench is enormous, and you get a morning as well as an evening. Take the first metro back — services start early, and an empty city at six in the morning is worth being awake for.

Five ways layovers go wrong

1. Budgeting two hours for the return. Make it three. Passport control at both airports can be very slow at peak times.
2. Confusing the airports. Arriving at IST and booking a hotel near Sabiha Gökçen is a two-hour mistake.
3. Trying to do Topkapı and the Grand Bazaar and the ferry. Pick one big thing. Istanbul rewards depth over completeness, and never more than when you are watching a clock.
4. Carrying the bag. Left luggage exists at both airports; use it.
5. Assuming rush hour will not apply to you. Between five and seven, anything on a road can double. Stay on rails and water.

If you would rather not think about any of the above, the other way to do an evening here is to hand over the logistics entirely: the whole thing, from the pier, with hotel transfer available at €5 per person in either direction.

Frequently asked