Here is my recent travel experience:

Onward journey:
Travel date: 12/5/2021 - 12/6/2021
Route: JFK → New Delhi → Vijayawada
Airlines: Air India (for all the flights including New Delhi to Vijayawada)

• Air suvidha, rtpcr report, vaccination record - one hard copy was collected at the destination (Vijayawada).
• In all other places (JFK, New Delhi), I just had to show the documents. They did not collect them.
• I carried hard copeis. But had soft copies as a backup.
• Print air suvidha in color (only on one side of the paper).
• For the RTPCR test, it is 72 hours before departure (not arrival).
• Luggage is only checked in till New Delhi.
• I had to collect them and recheckin at New Delhi.
• Customs, immigration, luggage transfer etc., took 3+ hours in New Delhi.

Return journey:
Travel date: 12/25/2021 - 12/26/2021
Route: Vijayawada → New Delhi → JFK
Airlines: Air India (for all the flights including Vijayawada to New Delhi)

• RTPCR test
  • should be done 24 hours before departure.
  • was checked at Vijayawada during checkin
  • was checked at New Delhi before entering immigration
• Luggage booked all the way (Vijayawada to JFK). Did not have to collect or transfer it at New Delhi.
• Immigration took a long time at New Delhi.
  • Long lines + very few employees.
  • I had 2 hr 30 minutes gap between the flights and it was not enough.
  • I almost missed the flight and had to run.
  • Suggest to have 3+ hours in between.
• Immigration took long time at JFK also.
  • Long lines.
  • Flight landed at 6:30 am and by the time I came out it was 9 am.