Up until 2020 we travel to europe 6 times for 4-6 weeks at a time. My lPM was 2-3 and I was successful with carrying a POC for the plane trip and traveling. I also carries a 0-5 concentrator from Inogen as a carry on. While in my room I used it with a 25 foot hose and also used with my CPAP. It is very doable and fun. Need to be careful if on a field trip and hike up hills. I would say do it but discuss with your doctor in case there are conditions I do not know about. See as much as you can while you can. In my case I had COVID in 2021 so now I can no longer fly. Enjoy, Enjoy and Enjoy