Why do I get my period when I fly?

Proper hormone balance is necessary for ovulation, meaning an imbalance can rock the system and cause an irregular period. While many hormones are involved in the control of your menstrual cycle, two important ones are known to be directly related to travel and stress: cortisol and melatonin.



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Although some people may notice a change in their menstrual cycle and ovulation during or after a trip, the majority are unaffected. Travel can certainly agitate and manipulate the timing of ovulation, but so can just about anything that causes a lot of stress.

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It's normal for your cycle to be thrown off course and perhaps even miss a period when you travel. If you have concerns about skipping a period, or you miss two or more cycles once you return, reach out to your healthcare provider for guidance.

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While many hormones are involved in the control of your menstrual cycle, two important ones are known to be directly related to travel and stress: cortisol and melatonin. Travel often goes hand-in-hand with stress, explained Dr. Klein, and this can cause cortisol levels to fluctuate.

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