Markham Airport

Based on the conducted searches, there is no evidence of a commercial passenger airport specifically identified as "Markham Airport (MI52) in Clinton, US" that has recent traveler reviews and experiences available. The identifier "MI52" did not consistently point to a commercial airport in Clinton, US.

During the search, two notable "Markham Airport" entities were found, but neither aligns with the user's request for a commercial airport in "Clinton, US" with traveler reviews:

• Markham Airport (TC LID: CNU8) is a private aerodrome located in Markham, Ontario, Canada. It serves small and private aircraft, the Royal Canadian Air Cadets Gliding Program, and does not operate commercial passenger flights with associated traveler reviews on terminal facilities, security, or customs. The city of Markham, Canada, does not have its own airport, with travelers typically flying into Toronto Island (YTZ) or other Toronto-area airports.
• Meriden Markham Airport (MMK) is a municipal airport in Meriden, Connecticut, US. This airport caters to general aviation, flight schools, and private aircraft. While it offers facilities like hangars, tie-downs, and maintenance, there are no indications of commercial passenger services, security checkpoints, or customs/immigration experiences for general travelers.

Given this information, it is not possible to provide a summary of traveler sentiment, terminal facilities, security wait times, customs/immigration experience, or transportation connections and parking for "Markham Airport (MI52) in Clinton, US" as it does not appear to operate as a commercial passenger airport with publicly available traveler reviews.