Yes, you can usually buy travel insurance after you book a flight. Travel insurance is intended to cover a variety of unexpected events that may occur prior to or during your trip, such as trip cancellations, delays, medical emergencies, lost luggage, and more.

When you purchase travel insurance will depend on the insurance provider and the specific policy. Some insurers allow you to buy travel insurance until the day before your departure, whereas others may have a cutoff date closer to your booking date.