Is it okay to fly while fasting?
Yes. Flying doesn't break your fast, and you can keep fasting on a plane if you feel able. Because a flight is travel, you're also allowed to break the fast and make the day up later. If you keep fasting, you break it when the sun has set where the plane is, not at home or at your destination.
Flying and the travel concession
Most flights are well beyond the travel distance scholars set for the concession, so you count as a traveler. The Quran gives travelers a choice:
When a companion asked about fasting on a journey, the Prophet ﷺ said: "You may fast if you wish, and you may not fast if you wish" (Sahih al-Bukhari 1943). He himself set out fasting in Ramadan and broke his fast on the way at al-Kadid (Sahih al-Bukhari 1944). So both options are valid, and a missed day is simply made up later.
When do I break my fast in the air?
The Prophet ﷺ said the fasting person breaks the fast when night comes, the day leaves and the sun sets (Sahih al-Bukhari 1954). On a plane, that means the sunset you can see from your seat. At cruising altitude the sun often sets later than on the ground below, so you may need to wait a little longer. Many flight-prayer apps calculate sunset for the plane's position, or you can simply look out of the window.
- Flying west: you chase the sun, so the day gets longer. If it becomes too hard, you may break the fast as a traveler.
- Flying east: the day gets shorter and sunset comes earlier than you're used to.
- Landing before sunset: follow the sunset time of the city you land in.
Starting the day at home, then flying
If you begin the day fasting at home and your flight leaves after dawn, scholars differ. The Hanafi, Maliki and Shafi'i schools say you should normally complete that day's fast, while the Hanbali school allows breaking it once you've left your town. If you start the day already traveling, all agree you may skip the fast.
Is it wise to fast on a flight?
Cabin air is very dry, and long flights can be tiring, so think honestly about your health. If you have a short, comfortable flight, fasting is usually easy. On a long-haul trip with connections and jet lag, many people choose the concession and make the day up later. Both are fine; the Quran's goal is ease, not hardship. Small things like brushing your teeth don't break the fast either. See Can I brush my teeth while fasting?
Don't forget the prayers on board too. See Can I pray on a plane?
- Flying doesn't break the fast.
- As a traveler, you may fast or break it and make it up later.
- Break your fast at the sunset you see from the plane.
- Westbound flights can make the day much longer; the concession is there for that.
- Schools differ on breaking a fast you started at home before the flight.
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