Guys

I'm a US citizen and plan to travel BOM-DOH-BCN (final destination Spain) in June but my passport expires in August. Does anybody know if I'll be allowed to fly? I believe airlines are supposed to follow the rules set by the consulate of the destination country

Also, are most agents at check-in meticulous at checking the rules or simply check to see if the passport is valid on that date and allow one through?

If it helps, I do have my return ticket booked as well just a week later back to BOM

Thanks