Here are some rulings from islamqa:
http://www.islamqa.com/en/ref/37670
When should the person who is travelling by plane break his fast?.
Praise be to Allaah.
If the sun sets and he breaks his fast on the ground, then when the plane takes off he sees the sun, he does not have to refrain from eating and drinking, because he has completed his fast in full, and there is no need to repeat the act of worship after he has finished it. If the plane takes off before sunset, and he wants to complete that day’s fast whilst travelling, then he should not break his fast until the sun sets in the place where he is in the air. It is not permissible for the pilot to take the plane down to a level where the sun cannot be seen so that the people can break their fast sooner, because this is a kind of trick. But if he descends for a valid technical reason and the disk of the sun disappears, then he should break his fast.
From the fatwas of Shaykh Ibn Baaz. See the booklet Sab’oon Mas’alah fi’l-Siyaam (Seventy Issues related to Fasting).
The Standing Committee said:
If the fasting person is on board an airplane and he finds out through the clock or the telephone that a nearby city has broken the fast, but he can see the sun because the plane is high up, then he is not allowed to break his fast because Allaah says (interpretation of the meaning):
“then complete your Sawm (fast) till the nightfall”
[al-Baqarah 2:187]
This does not apply in his case so long as he can still see the sun.
But if he broke his fast in that city after the day ended for him, then the plane took off and he saw the sun, then he should continue to break his fast because he comes under the ruling of the city from which he took off, where the day ended whilst he was still there.
In another fatwa, the Standing Committee said:
If a person is in an airplane during the day in Ramadaan, and he is fasting and wants to continue fasting until night-time, it is not permissible for him to break his fast until the sun has set.
Majmoo’ Fataawa al-Lajnah al-Daa’imah, 10/136-137
And Allaah knows best.
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http://www.islamqa.com/en/ref/38007/plane%20travel%20fasting
With regard to fasting, I started fasting in London and broke my fast in Riyadh. What is the ruling on the time difference?.
Praise be to Allaah.
Your fast is valid, because with regard to breaking the fast, what matters is the place where the fasting person is when the sun sets; the time difference does not matter, whether the day is long or short.
In Fataawa al-Lajnah al-Daa’imah (10/296) it says:
The scholars are unanimously agreed that the fast lasts from dawn until sunset, and each person who fasts is subject to the rulings on the place where he is, whether he is on the ground or in a plane that is in the air.
In another fatwa (10/295):
The basic principle is that with regard to starting to fast, breaking the fast and the time of prayer, each person is subject to the ruling of the land he is in or the air through which he is travelling. If the plane he is in takes off a few minutes before sunset and the day continues for him, it is not permissible for him to break his fast or to pray Maghrib until the sun sets from the point of view of the air through which he is travelling, even if he passes through the airspace of a city whose people have broken the fast and prayed Maghrib, so long as he can see the sun.
Based on this, whoever starts to fast then travels in a plane towards the west should break his fast when the sun sets in the place where he is. Similarly if he travels by plane towards the east and wants to fast, he should not break his fast until the sun sets in the place where he is. The time difference does not matter.
And Allaah knows best.
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http://www.islamqa.com/en/ref/106475/plane%20travel%20fasting
A person was traveling from Karachi to Saudi at the time of ‘Asr in Ramadan. Some time after taking off, the host announced that it is iftaar time in Karachi. But the sun was still visible for all travelers on the plane. Is the fasting valid of the ones who broke it then?.
Praise be to Allaah.
The scholars are of the view that the fast lasts from dawn until sunset, because Allaah says (interpretation of the meaning):
“and eat and drink until the white thread (light) of dawn appears to you distinct from the black thread (darkness of night), then complete your Sawm (fast) till the nightfall”
[al-Baqarah 2:187].
And it is proven that the Prophet (peace and blessings of Allaah be upon him) said: “When night comes from here and departs from here, and the sun sets, then the fasting person breaks his fast.”
Every fasting person is subject to the ruling of the place where he is, whether he is on the ground or in a plane in the air.
Based on that, if a person breaks his fast whilst on board a plane according to the timetable of some city although he knows that the sun has not set, then his fast is invalid, because he has broken his fast before the sun has set for him, and he has to make up that day.
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