Don't know if I'm posting this question in the correct place (apologies if not, this seemed to be the place at this forum most focused on Delta).

Quick question:

I'm a U.K. citizen living in the United States on a U.S. Green Card.

Flying home in March (Delta: Atlanta to Manchester, U.K.).

My British passport is about to expire, but will still be valid for a couple of weeks from the day I'm supposed to be flying from Atlanta to Manchester. I'll renew the passport at the passport office in Liverpool before my return flight from Manchester to Atlanta later in March.

So, the basic question is this. Airlines like to see six-month validity on passports, I know. But as a U.K. citizen flying into the United Kingdom on a U.K. passport that is still valid there is no problem as regards British immigration and border protection (I checked).

Will Delta give me a hard time boarding a plane to the U.K. on a British passport with less than 6 months validity left on it?

Thanks for any help/insight.