Your diversion airport is usually chosen before you leave the gate. Almost every flight plan names at least one alternate, with enough fuel loaded to reach it, and the crew picks from that plan when the destination becomes unusable. Weather, a runway closure, a medical emergency or a low fuel state can trigger it.
Updated July 2026 · HappyFares
Diversions feel random from seat 24C. They are not. The list of places your aircraft could land was drawn up hours before you boarded, and the reason you ended up at one of them is usually mundane.
How is a diversion airport chosen?
Before departure, the airline’s dispatch team and the crew agree a flight plan that names the destination plus one or more alternate airports. Fuel is then loaded to match: enough for the trip, a contingency margin, enough to fly on to the alternate after a missed approach, and a final reserve for holding. That last reserve is not spare fuel. It is the floor a crew is not supposed to go below.
An airport only qualifies as an alternate if it works for that specific flight. Planners look at the forecast weather at the expected arrival time, runway length and strength for the aircraft type, the approach aids and lighting available, operating hours, since some airports close overnight or have curfews, rescue and firefighting category, fuel supply, and whether the airline has ground handling there at all. On international flights, customs and immigration facilities matter too.
Two extra layers exist that passengers rarely hear about. When the departure airport’s own weather is poor, the flight also needs a takeoff alternate, somewhere close by to land immediately if a problem occurs right after departure. On long overwater or remote sectors, en route alternates are planned as well. In the air, the choice can still change: crew, dispatch and air traffic control will pick the best available option based on fuel remaining, how the weather is trending and how many other aircraft are heading for the same place.
Where do Indian flights usually divert to?
There is no fixed map, and the alternate on your flight plan is chosen for the conditions on that day. That said, geography and runway capability produce patterns that repeat, and knowing them takes some of the sting out of an unexpected landing.
| Destination | Alternates commonly used | Typical trigger |
|---|---|---|
| Delhi | Jaipur, Lucknow, Amritsar, Ahmedabad | Winter fog, thunderstorms, runway closure |
| Mumbai | Ahmedabad, Hyderabad, Bengaluru, Goa | Monsoon storms, low visibility, congestion |
| Chennai | Bengaluru, Hyderabad, Tiruchirappalli | Northeast monsoon, cyclonic weather |
| Kolkata | Bhubaneswar, Guwahati, Patna | Pre-monsoon squalls, cyclones |
| Bengaluru | Chennai, Hyderabad, Coimbatore | Thunderstorms, low visibility |
| Kochi, Thiruvananthapuram, Kozhikode | Each other, plus Coimbatore | Heavy monsoon rain, wind |
Some destinations are harder. Hill and island airports such as Leh, Srinagar, Shimla and Port Blair have limited nearby options, so flights carry extra fuel and a distant alternate, and a return to the departure airport is often the realistic choice rather than a diversion. Low-visibility landing capability at the bigger metros reduces fog diversions considerably, but it does not remove them, partly because departures need visibility too.
Why can you sometimes not get off the aircraft?
This is the single most frustrating part of a diversion, and the reasons are usually structural rather than obstinate. A diversion airport may have no free parking stand with an aerobridge, no steps or buses available at short notice, no ground staff from your airline, and a terminal that is closed at that hour. Everyone who leaves the aircraft also has to be screened again before re-boarding, which takes time the airline may not have.
International flights add a harder constraint. You cannot walk into a country without immigration clearance, so an international flight that diverts to an airport without those facilities generally keeps passengers on board while it refuels and waits. Refuelling with passengers on board is permitted under strict conditions, which is why a technical stop can happen without anyone moving.
Crew duty time is the other clock. Indian carriers work to DGCA flight duty time limitation rules, and if the operating crew runs out of permitted hours on the ground, the aircraft cannot continue that day regardless of weather. That is the point at which airlines start arranging hotels, or occasionally road transport for the remaining leg on short domestic hops.
What happens to your onward journey and your bag?
Your checked baggage normally stays in the hold and continues to the final destination with the aircraft. Bags are only offloaded if the flight is terminated at the diversion airport, in which case you collect them there. This is why leaving informally at a diversion airport is a bad idea: your bag is unlikely to leave with you.
For the journey itself, there are three usual outcomes. The aircraft refuels and continues once the destination reopens, which is the most common. The flight is terminated and the airline rebooks you, often on a later service from the diversion airport or after moving you by road. Or the airline cancels outright and offers you a refund or an alternate flight.
If you have a connection, tell the crew before you land if you can, and ground staff immediately afterwards. On a single ticket the airline is generally responsible for getting you to the final destination. On separate tickets the second airline has no obligation to you at all, which is worth remembering when you book tight self-connections in the monsoon or in December.
What are your rights after a diversion?
A diversion is not treated as its own category in Indian passenger rules. What matters is the outcome, meaning whether it becomes a long delay, a cancellation, or a journey that ends short of where you paid to go. DGCA rules broadly require airlines to provide meals and refreshments once the wait crosses a threshold linked to the flight’s scheduled duration, to offer an alternate flight or a full refund if the delay stretches well beyond that, and to arrange accommodation where the wait runs overnight.
Compensation is a narrower question. DGCA rules carve out circumstances beyond the airline’s control, including weather, air traffic control restrictions, security events and natural disasters, and most diversions in India are weather driven. Expect the airline to argue that carve-out. The duty to look after you and to refund an untravelled sector is the part worth pressing, and it does not disappear because the sky was to blame.
Keep the evidence while it is easy to get: your boarding pass, the bag tag stub, photos of the information display, and itemised receipts for anything you had to pay for. If the airline does not respond, escalate to its nodal officer and then its appellate authority, both of which carriers are required to publish, and after that to AirSewa, the Ministry of Civil Aviation grievance platform.
Common Questions
Can I get off at the diversion airport and make my own way home?
Sometimes, on a domestic diversion, if the airline agrees to terminate your journey there and offload your bag. It needs staff on the ground and the airline’s consent, so ask rather than assume. Walking away without that agreement usually forfeits your onward carriage and separates you from your checked baggage.
Why did the aircraft fly past a closer airport?
Because the closest airport is not always usable. It may have the same weather, a runway too short for the aircraft, no instrument approach in those conditions, closed operating hours, no fuel or handling for that airline, or no space left because other flights diverted there first. Fuel is also planned to a specific alternate, not to the nearest dot on a map.
Does the airline pay for my hotel after a diversion?
Where the disruption leaves you stranded overnight, DGCA rules generally require the airline to arrange accommodation and transfers. In practice, ask ground staff to book it rather than arranging your own and claiming later, since airlines are far more likely to honour something they authorised. If you must pay, keep itemised receipts and the boarding pass.
What happens if an international flight diverts to a domestic airport?
Passengers usually stay on board. Without customs and immigration facilities you cannot legally enter the country there, so the aircraft refuels, waits for the destination to reopen and continues. If it cannot continue, the airline coordinates with authorities to clear passengers, which is slow and is one reason international diversions take longer to resolve.
Will I get compensation for a weather diversion?
Usually not, because weather sits inside the circumstances DGCA treats as beyond the airline’s control. That exemption applies to compensation, not to everything: the airline is still expected to look after you during the wait and to refund an untravelled portion if it cannot complete the journey. Ask for the reason for the diversion in writing.
How do I find out where my flight actually landed?
Flight tracking sites and the airline app usually update faster than announcements in the arrivals hall, and both will show the unexpected landing airport. If you are meeting someone, check there first, then confirm with the airline, because the aircraft may continue to the original destination within a couple of hours.
Rebuilding a trip after a diversion, or planning around fog and monsoon season? Compare fares and timings across airlines on HappyFares to see every option on your route in one place.
Airport capabilities, passenger rules and airline policies change. Verify the current specifics with your airline, DGCA or the airport before you travel.
