I will be flying to Phnom Penh, departing Suvarnabhumi Airport at 09:45, on Sky Angkor. My ticket seller, Trip.com, advises:
"We make the suggestion to arrive at Suvarnabhumi Airport at least 3hr prior to departure to ensure you have enough time to check in."
Is this good advice, or is 3 hours overkill? What are other travelers' experiences?