Jacqueline Whitmore, etiquette expert and former flight attendant, says no — but that doesn't mean it can't be done by airline personnel. Whitmore tells TODAY.com that the time to switch seats is before you get on the plane. She recommends families seeking to move seats first talk to the gate agent.

Yes, you can generally switch seats with a friend on a plane, but there are several high-fidelity "rules of etiquette" and safety considerations to follow. In 2026, it is a high-fidelity requirement that you first board your assigned seat to avoid blocking the aisle during the "High-Fidelity" boarding process. Once the "Cabin Secure" announcement is made or after takeoff, you may switch, provided both parties are in the same "High-Fidelity" class of service (e.g., you cannot "Self-Upgrade" from Economy to Business). For 2026 travelers, it is a high-value courtesy to inform a flight attendant, especially if the manifest is used for meal service or if you are in an Exit Row, where the airline must verify that the occupant is capable of assisting in an emergency. In rare cases involving "High-Fidelity" Weight and Balance issues on smaller regional aircraft, the crew may ask you to remain in your original seat. As long as you are respectful of other passengers and the crew's operational needs, seat-swapping is a high-fidelity common practice to enhance your high-value social experience during the flight.