Probably one of the most common places a student will need to use English is at the airport. It’s an essential communication skill and one every English teacher will have to teach at one time or another.
This video is a nice review of the standard language used to check in at the airport.
EFL Classroom 2.0 members can get many, many more resources: worksheets, wordfinds, flashcard sets to help teach the core language of this video and “At The Airport”.
Inflight safety videos are also great for teaching on this topic. Especially the few that are funny and really entertaining, like this one. Again, get the resources for this video on EFL Classroom 2.0.