Visa & Transit When Your Flight Is Rerouted
If your flight is rerouted or diverted to a country you had not planned to enter, visa and transit rules still apply. This matters in cases like unscheduled diversions for medical or operational reasons, or re-protection of a cancelled flight through a different hub. Here is what to know.
Landside vs Airside Transit
Most international transit happens "airside" — you stay within the secure area of the airport, never formally enter the country. Many countries permit airside transit without a visa. A small number of countries (US, Canada, UK for some nationalities) require a transit visa even for airside stays.
"Landside" transit — where you clear immigration to collect bags, change terminals, or overnight — typically requires entry permission (either visa-free, visa-on-arrival, or pre-arranged visa).
Unscheduled Diversion
When an aircraft diverts for a medical or technical reason to an unplanned country, most jurisdictions have pragmatic procedures: passengers either stay on the aircraft during refuelling, or are admitted under a humanitarian entry waiver. This is coordinated between the airline, local authorities, and sometimes the passenger's embassy.
You will not typically need a visa you do not have for a diversion, but your access to the country (leaving the airport, overnight hotel) may be restricted.
Re-Protection Through a Different Hub
If an airline offers to re-protect you on an itinerary through a different hub — for example, rebooking a London-Delhi passenger via Istanbul after a Gulf event — check visa requirements for the new transit country. The airline should check this for you but the responsibility is ultimately yours. If the new routing requires a visa you do not have, you can decline and request refund or alternative rerouting.
Informational. Not immigration or legal advice. Visa requirements vary by nationality and transit country; consult the relevant immigration authority. See Terms of Service.