From where should a person who did not pass the meeqaat enter ihraam?

If he does not pass any of these meeqaats, he should see
where he comes in line with the nearest meeqaat and enter ihraam from there.
If he passes along a route between Yalamlam and Qarn al-Manaazil, he should
see which is closer, and when he comes in line with the one that is closer,
he should enter ihraam from that point. This is indicated by the fact that
the people of Iraq came to ‘Umar and said: “O Ameer al-Mu’mineen, the
Prophet (peace and blessings of Allaah be upon him) stated that the
meeqaat for the people of Najd was Qarn but it is far out of our way.” ‘Umar
(may Allaah be pleased with him) said: “See where you come in line with it
on your route.” So he told them to see where they came in line with Qarn
al-Manaazil and to enter ihraam from that point. This is how it is narrated
in Saheeh al-Bukhaari. This ruling of ‘Umar’s teaches us something
important, which is that those who come by plane with the intention of
performing Hajj and ‘Umrah, and pass these meeqaats from above or to the
right or left, should enter ihraam when they come in line with these
meeqaats, and it is not permissible for them to delay entering ihraam until
they land in Jeddah, as many people do. That goes against what the Prophet
(peace and blessings of Allaah be upon him) taught, and Allaah says
(interpretation of the meaning): 

“And whosoever transgresses the set limits of Allaah, then
indeed he has wronged himself”

[al-Talaaq 65:1]

“And whoever transgresses the limits ordained by Allaah,
then such are the Zaalimoon (wrongdoers)”

[al-Baqarah 2:229]

So if a person is coming by air with the intention of
performing Hajj or ‘Umrah, he should be prepared to enter ihraam in the
plane. When it comes in line with the first meeqaat that it passes by, he
must enter ihraam, i.e., he should form the intention to enter into ihraam
and he should not delay that until he enters the airport at Jeddah. End
quote.