Can I Cancel Japan Airlines Tickets Within 24 Hours? Hereās What You Need to Know Travel plans can change unexpectedly šņ°, and if you have just booked a flight, you may be wondering whether Japan Airlines allows cancellations within 24 hours. The good news is that Japan Airlines does offer a 24-hour risk-free cancellation policy in line with U.S. Department of Transportation rules ā . Understanding how this policy works can help you avoid unnecessary charges and stress. For immediate assistance, you can contact Japan Airlines customer service at +1 (833) 341-5261 š