Short answer: reach the airport 2 hours before a domestic flight and 3-4 hours before an international one - but understand what those numbers protect you from. The flight does not wait at departure time; the check-in counter closes 60 minutes before a domestic departure and 75 minutes before an international one, and the boarding gate closes about 25 minutes before pushback. Miss the counter deadline and the airline can cancel your seat on the spot, full stop. Arrival time is really about never testing those cutoffs.
The deadlines that actually matter. IndiGo's published rules are the clearest example: counters close 60 minutes before domestic departures and 75 minutes before international ones, boarding gates close 25 minutes before departure, and the airline reserves the right to cancel a reservation that misses check-in timelines. Other Indian carriers work to nearly identical clocks. Notice the trap: a 'on time' arrival that leaves you queuing at the counter at the 62-minute mark is a missed flight with no refund and a rebooked one at same-day prices.
Why international needs the extra hour. The 75-minute counter deadline is only the first gate. Immigration queues at Delhi and Mumbai can run 30-60 minutes at evening banks of Gulf and Southeast Asia flights, security adds its own line, and some terminals are long walks. The old '3 hours before' advice covers an ordinary evening; 4 hours is what IndiGo recommends and what a family with elders, kids and four suitcases should plan for at a big metro airport. Smaller airports - Jaipur, Lucknow, Kochi - move faster, but the counter deadline is the same everywhere.
What web check-in does and does not buy. Free web check-in opens 48 hours before the flight and closes 60 minutes prior (two hours on Air India international), and it is genuinely time-saving: with only a cabin bag on a domestic flight, you can walk straight to security. But with a checked bag you still need the bag-drop counter, which closes on the same clock as check-in - web check-in does not extend it. Think of web check-in as skipping a queue, not stretching the deadline.
Work backwards, not forwards. The reliable way to set a leave-home time: counter deadline, minus a buffer for queues, minus realistic travel time with traffic, minus the parking-or-dropoff walk. For a 9 PM international departure from Delhi: counter closes 7:45 PM, so target the terminal by 6:30-7 PM, which usually means leaving home around 5-5:30 PM depending on distance. Build the same chain for domestic with its 60-minute deadline. Parents travelling with wheelchair assistance should add 30 minutes - the assistance is excellent but runs on its own clock.
Edge cases that bite. Early-morning departures: counters and even terminal entry can be thinly staffed before 5 AM, but the deadlines do not soften - arrive on time even if the airport looks asleep. Metro-airport evening rush: the drive can double; check live traffic, not habit. And 'gate closes 25 minutes before' means closed - on a delayed boarding announcement, do not wander off for a long dinner; stay within earshot of the gate.
How TripKeeper times airport days. On our trips, departure-day plans are built backwards from the counter deadline - pickups padded for traffic, assistance pre-booked, and nobody doing immigration arithmetic at the queue. If you would like your next holiday's airport math done for you, send a trip-planning inquiry.
A Miranda House graduate and lawyer who traded courtrooms for slow travel. Cheshta travels with the batches we host ourselves, with a soft spot for travelling alongside elders.
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