Direct Airside Transit Visa (DATV)

Dine on demand is a business or first class meal service where passengers choose when to eat during the flight rather than following the cabin’s fixed meal schedule, offering restaurant-style flexibility.

Direct aisle access means every seat in a business or first class cabin can reach the aisle without stepping over or disturbing another passenger, typically achieved through 1-2-1 or 1-1-1 configurations.

Denied boarding occurs when an airline refuses to allow a confirmed, checked-in passenger to board a flight, usually due to overbooking. Passengers are entitled to compensation and rebooking under DOT and EU261 rules.

A direct flight operates from origin to destination under a single flight number, though it may make intermediate stops. It differs from a non-stop flight (no stops) and a connecting flight (different flight numbers).

A dead-leg (or empty leg) is a flight segment that an aircraft must operate without revenue passengers, typically a repositioning flight. In commercial aviation, it can also refer to heavily discounted fares on underbooked segments.

An award chart that prices redemptions on great-circle miles flown rather than region pairs, typically with peak / off-peak tier modifiers. Aeroplan and British Airways Avios are the two most prominent distance-based charts among major programmes; they are predictable and reward shorter stage lengths disproportionately.