What it really means to travel without a return ticket
Traveling on a one-way ticket is legal in most countries, but it does not exempt you from showing how and when you plan to leave. Airlines and border officers usually want to see some form of proof of onward travel.
Buying an expensive return ticket you may never use is one option, but it locks you into dates and routes that may not match your real plans. A verifiable onward ticket gives you the documentation you need without the commitment.
This is the same approach used by digital nomads, long-term travelers and frequent flyers who need to stay flexible while still respecting airline and immigration rules. Requirements differ by destination — check which countries may request proof.