A trip can involve more than one set of rules. Start with the final destination, then trace each airport or border crossing along the way. Review passport validity and any visa or transit requirements that apply to the traveller.
A flight reservation confirms an itinerary, not permission to enter every place on it. The destination’s authorities and current official travel advice are the places to verify requirements.
Make the information usable
Keep the itinerary, airline contact and accommodation details together. A final check shortly before leaving home can catch changes made after the booking.
These are general editorial notes, not a decision about anyone’s eligibility to travel. Check current rules with the relevant authorities for your situation.

