Short answer
Not through the online process if the outbound and return flights are on the same booking. The cited policy says that passengers under the same booking must change their dates and/or flights together when changing a booking online. A return-only change therefore does not fit that online rule.
If the two flights are on separate bookings, the information cited here does not say whether the return can be changed independently. That cannot be confirmed from this rule alone.
How to check
- Check the booking structure. Confirm whether the outbound and return flights are under the same booking. The “together” requirement described here applies to passengers under one booking.
- Check the fare rules. Rebooking may not be allowed, or it may incur additional fees, subject to the fare rules of the ticket.
- Confirm before relying on a change. Check whether the requested return change is permitted and what additional fee, if any, applies. The cited information does not state a fixed amount.
What still needs confirmation
The available policy information does not specify an exact fee, a deadline, a refund outcome, or a rule for separate bookings. These points must be confirmed against the applicable ticket fare rules and with the airline before treating a return-only move as available.