It's useful to carry a hardcopy of your itinerary but you can still travel without one. In most cases, your booking reference number or passport/ID can be used to get your boarding pass.
How do I prove my travel itinerary?
If you have a document from an airline that lists a confirmation code or demonstrates that you have actually reserved or booked your tickets, you have a confirmed travel itinerary.
Do I need to print out my itinerary?
Is an itinerary a boarding pass?
There is a common misconception that flight itineraries and flight tickets are the same things, and in reality, they are two very different documents that serve other purposes. A flight itinerary is simply a schedule of flights, while a flight ticket is an actual document that allows you to board the plane.
Is itinerary receipt a ticket?
An itinerary receipt is a confirmation of an e-ticket purchase. Using e-tickets, passengers do not have to present their itinerary receipts at check-in.
Can I scan an e ticket on my phone?
Depending on the station you're leaving from, you can do a couple of things: Scan the QR code on the eTicket from your device or your printed paper if you've chosen to print your eTicket before you arrive at the station.