Also known as “return air tickets,” round-trip tickets are flights from and back to the same location of origin. A one-way ticket, on the other hand, only allows you to fly to your destination, not back from it.
An onward ticket is a proof of a booked train, bus or airline ticket originating from the country about to be entered. An onward ticket reflects any of these: a round-trip airline ticket. an airline or train or bus ticket from one country to another.
Yes, you can use a round-trip airline ticket to return earlier than expected. However, there are a few things to keep in mind: The airline's policy: The airline's policy on changing or canceling flights will vary. Some airlines may charge a fee for changing or canceling a flight, while others may not.
This is known as throwaway ticketing, and doing so intentionally violates the terms and services of many airlines. It could result in your ticket being canceled without a refund and even with you being banned from purchasing future tickets.
If you miss the outward flight on a round trip ticket, your return ticket will be cancelled. Don't risk it. Contact whoever you booked this with to see if it can be changed.
The answer is NO. There are two reasons why you cannot do this, especially on an international itinerary. It is a violation of the contract one of them entered into with the airline when purchasing the ticket. The ticket is issued to one person only and cannot be transferred.