They had everything ready.
Passport valid. Flights booked. Destination allowed visa on arrival.
There shouldn’t have been a problem.
But they never boarded the flight.
Visa on arrival sounds simple.
Arrive at the destination, get your visa, and continue your trip.
So travellers assume no preparation is needed before departure.
But that’s not always how it works in practice.
Even when a destination offers visa on arrival, other conditions can still apply.
These can depend on:
In some cases, travellers may need to meet requirements before they travel — not after arrival.
And those requirements are not always clearly explained.
Most issues happen before departure.
Travellers arrive at the airport expecting everything to be handled on arrival.
But airlines must verify eligibility before boarding.
If something is missing or unclear:
Airlines face penalties for transporting passengers who do not meet requirements.
So they check everything before departure — not at the destination.
Even if your destination offers visa on arrival:
That’s when airlines deny boarding before departure.
If your destination offers visa on arrival, it’s still important to check your full travel route before departure.
👉 Check entry requirements here: Entry requirements for your destination
👉 Check visa requirements: Visa requirements
👉 Check transit rules: Transit requirements