In the line? At the line? During the line?

[EnglishLearner1990]

Hi,

Which one is correct: They met in/on/at the line of passport control at the airport.

Thanks.

[JMurray]

not a teacher

In the sense of "line" = "queue", I would say "in the line".
There may be regional differences with this.

[emsr2d2]

In BrE, "They met in the queue for immigration" or "They met in the queue for passport control".
In AmE (I believe), "They met in the line ..."

[EnglishLearner1990]

In BrE, "They met in the queue for immigration" or "They met in the queue for passport control".
In AmE (I believe), "They met in the line ..."

You meant that we cannot say "...of passport control at the airport."?

[emsr2d2]

You meant that we cannot say "...of passport control at the airport."?

Yes. "The queue of passport control" is incorrect. We queue for a service, in/at a building and at​ a desk/counter.

[ahmed2th]

In BrE, "They met in the queue for immigration" or "They met in the queue for passport control".
In AmE (I believe), "They met in the line ..."

Can I say "They met up in the queue ......." instead of "They met in the queue ...................." ?

[emsr2d2]

Can I say "They met up in the queue ......." instead of "They met in the queue ...................." ?

You can but it has a slightly different connotation. "They met up" suggests that they arranged to meet there (and a queue would be a strange place to meet up). "The met in the queue..." means that they encountered each other for the first time there.

They met in the queue for passport control and now, twelve years later, they have four children and are about to celebrate their tenth wedding anniversary.