If you have booked the entire journey under one single PNR then you can skip the first leg by calling the airline before the first leg flight closes technically this will not be skipping the flight – this will be cancellation of the first leg.
What happens if you miss the first flight of a round trip?
If your flights are part of a complete round trip purchased on a single itinerary/airline, then the answer is no, since the first flight/airline will automatically cancel your itinerary after you miss the first flight. In some cases they may be able to even confirm you on the next flight.
Can you get on the second leg of a flight?
Can I board on the second leg of my flight? No. If you miss any leg of your ticketed itinerary, the airline will cancel all remaining legs of the flight. If you booked as a roundtrip itinerary and utilized hidden-city on the departure flight, your return ticket would be canceled.
What does first leg of a flight mean?
A flight leg may be part of a Flight Segment or Direct Flight. The term flight leg is in fact used for referring to a single leg in trip consisting of multi-legs, and is therefore not typically used for referring to a stand-alone nonstop flight.
Can I cancel one leg of a round trip flight American Airlines?
No! It is a rule on all airlines that you must fly ALL legs of your round trip ticket in order. If you skip the first leg the 2nd one will be canceled!