: Purchase a round-trip ticket with a tentative return date. Ensure you choose a fare class that allows free or low-fee changes so you can move the date later.
While you generally cannot leave the return date blank, you can use these methods to keep your plans fluid: can you buy open ended airline tickets
: Use the "Multi-City" search tool on sites like Google Flights or Skyscanner . This allows you to fly into one city (e.g., Paris) and out of another (e.g., Rome) at a later date, providing flexibility for overland travel. Can I book an open-ended plane ticket? Do ... - Skyscanner : Purchase a round-trip ticket with a tentative return date
: Award tickets often offer much better flexibility than cash fares, frequently allowing free date changes or cancellations. Paris) and out of another (e.g.