They may pray together in one room. The husband has to pray in a position that is ahead of that of the wife.
Sheikh Abbas Jaffer is an optometrist by profession and has a Master’s degree in Islamic Sciences. He is a part time lecturer at the Islamic College in London and is currently writing his doctoral thesis on the challenges faced by educators of young Muslims in modern day Britain. He has also co-authored a book on Qur’anic sciences for the Islamic College as well as translating several works from Persian into English.
You may pray Zuhr and Asr on the plane, or after you land in LA before Qaza.
In the return case you must pray at least those Salats that would become Qaza if you wait until landing.