Ihraam

Is it compulsory to don the ihraam when returning to Makkah after visiting Jeddah?

Q:

1. Zaid is going for umrah next month with his family, after performing umrah, when in Makkah Mukarramah, he plans on going to Jeddah with his family to the beach and places of tourists attractions, on returning back to Makkah Mukarramah from Jeddah, is it compulsory for the family to have Ihram on and do Umrah again?

2. In the above situation, if it's compulsory for them to do Umrah and put on Ihram, can they put on Ihram from Jeddah, if not then from which place?

3. In the above situation, is there any way or leeway in Shari'ah that when going to Jeddah from Makkah Mukarramah on returning back to Makkah Mukarramah from Jeddah, the family don't have to put on Ihram and do Umrah?

Wearing one's ihraam before boarding a plane

Q: I will be flying from London for ummrah Insha Allah, but I don't want to wear ihraam from London on the plane because we have to use the plane toilets and I dont think we will stay clean as the toilets are very small and dirty. If I go to Makkah and I wear my ihraam at Masjid-e-Ayesha with the intention of doing umrah the next day, is that permissible? Or do I have to wear ihram in the plane or from London? Please advise.

Finding wadi on one's ihraam and clothing during hajj

Q: When I was performing Hajj, in mina, muzdalifah and throughout that day where you stone shayateens etc... I noticed that before and after urination wadi has come out of my private part. I am also sure that wadi touches the ihraam which means that my ihraam may also be not clean during that time. I am worried that my hajj may not have been accepted or may be I have to pay for damm (hajj penalty)?

Does one need to tie ihraam when flying over the miqaat when going to Madinah?

Q: Alhamdulillah a few years back Allah had afforded me with the opportunity to perform umrah. We flew from Jhb to Madina, and from Madina then took a taxi to the miqaat to tie ihraam and proceed to perform umrah. However while flying we flew over the miqaat, and I was wondering, were we supposed to tie ihraam on the plane before landing in Madina.If yes, then should dumm be paid?