The Fajr prayer on a plane, then entering an area where it is night

The questioner:
My question, may you live long, O Shaykh, is about prayer while traveling on airplanes. Sometimes we reach places where the dawn breaks for us and we pray the Fajr prayer. Then, after we pass that distance, we enter a zone where it is night. What is the ruling on the Fajr prayer for these places, may you live long?

The Shaykh:
You prayed the Fajr prayer, praise be to Allah, and then another night came.

The questioner:
Yes, may you live long.

The Shaykh:
Does the flight get long, I mean?

The questioner:
Yes, indeed. Here on the airplane, the distance might be only fifteen minutes or ten minutes. We see the dawn, and then we enter a zone where it is night.

The Shaykh:
Did you pray the Fajr, and does the night last with you, or does it not last?

The questioner:
Sometimes it takes us three hours, sometimes two and a half hours, sometimes four hours.

The Shaykh:
It appears that you prayed the Fajr, and this night you entered is not the first night.

The questioner:
But when we see the dawn a second time, do we repeat the Fajr prayer a second time, or is the Fajr prayer the one we already prayed?

The Shaykh:
The one you prayed is sufficient, because there is no Dhuhr, no 'Asr, no Maghrib, and no 'Isha' in between.

The questioner:
There is not.

The Shaykh:
Except for a short night.

The questioner:
A short time, but it is night.

The Shaykh:
There is nothing, only the change of directions as you pass through them.