1. I am late for flight 701 to Seoul.

2. I am late for Flight 701 to Seoul.
[Which one is right? Do we capitalize 'flight'?]

What do you think?

2 is correct, yes.

Both sentences are grammatically correct, but the capitalization of "Flight" depends on the specific writing style or formatting guidelines you are following.

In general, when referring to a specific flight number, it is common to capitalize the word "flight" and the flight number itself. So, following that convention, the second sentence "I am late for Flight 701 to Seoul" would be more appropriate.

However, if you are not referring to the flight number as a specific identifier and simply using the word "flight" in a general sense, it would not be necessary to capitalize it. In that case, the first sentence "I am late for flight 701 to Seoul" would be correct.

To determine the appropriate capitalization, it is always helpful to refer to any applicable style guides, such as those used in journalism, academic writing, or any specific guidelines provided by an organization or publication.