I'll stay here until you come back.
We have to wait until he arrives.
We do not use will after until when speaking about the future.
I'll stay here until you come back.
We have to wait until he arrives.
until he will arrive
We’ll wait until Monday.
I'll be here until two o'clock.
until Christmas, until my birthday
Until refers to time. It doesn’t refer to distance.
until tomorrow, until six o'clock
until three kilometres
Till is often used in informal spoken English as a short form of until. Some people also use 'til.
We waited till 3 o'clock.
I'm not leaving till you apologise.