The airport overview for Hong Kong in 2021 is actually footage of New York's JFK airport in the early 1990's. All of the aircraft types shown will have been long retired by 2021, as was the Delta paint jobs on all of the planes, which was retired in 1997.
Ted meets Wendy in an airport in 2021, yet no one is wearing any kind of PPE (mask, gloves, etc.) due to Covid-19 pandemic (although this was very difficult to foreshadow in 2005).