Originally Posted by
marks88
I booked directly thru IndiGo on domestic itinerary with US credit card a few weeks ago. Had to verify card at check-in in AMD, but it took 2 seconds. I also booked SQ award ticket on Vistara domestic, with US credit card for fees, and no check - was able to checkin online etc.
I had to book an entire domestic itinerary on Vistara from the US for an upcoming trip, because Indigo failed with my US Visa. Both were attempted directly on the airline sites.