Confirm your flight schedule with the airline or your agent before traveling, as smaller regional carriers can change times or aircraft with little notice.
Check baggage allowances and any fees at booking and keep a copy of the policy - do not assume free checked bags on all fares.
Pay with a card that offers purchase protection or use a reputable travel agency when possible, since refund and rebooking practices can be different on smaller carriers.
Arrive at the airport earlier than you would for larger airlines to allow extra time for check-in, local document checks, and any manual processing.