The one who passes the miqaat and forgets to enter ihram has to go back to his miqaat
Question

                Someone went for ‘Umrah by plane and the captain of the plane announced that they would be in line with the miqaat after twenty minutes, but he fell asleep and did not wake up until he reached the airport. Then he went to as-Sayl and entered ihram from there, and he did his ‘Umrah. Does he have to do anything or not?.
Praise be to Allah.
    If this man was one of the people of 
    Riyadh and he went to as-Sayl and entered ihram from there, he does not have to do anything because he entered ihram from his miqaat. But if he came from Madinah, he should have gone to the miqaat of the people of Madinah and entered ihram from there, and if he entered ihram from as-Sayl, then he has to offer a ransom (fidyah), because when the Prophet (blessings and peace of Allah be upon him) defined the miqaats, he said: “They are for them and for anyone who comes to them who is not of their people.” Passing the miqaat of the people of Madinah, for one who passes by it who is not one of them, is like the people of Najd passing the miqaat of the people of Najd when they did not enter ihram. End quote.