Hi, dear @Julai!
According to the guideline, unopened Ozempic should stay refrigerated until the first time you use it.
You can use opened pen for 56 days at room temperature between 59ºF to 86ºF (15ºC to 30ºC) or in a refrigerator between 36°F to 46°F (2°C to 8°C).
Have a nice flight, dear!