: You will receive a confirmation email with a 6-digit PNR (Passenger Name Record) or booking reference. Keep this handy for check-in.
: Be aware that the cheapest tickets often exclude carry-on bags and seat selection.
Avoid booking on the first site you visit. Use meta-search engines to compare prices across hundreds of airlines simultaneously. : Google Flights, Skyscanner, or Kayak.
: Pre-paying for checked bags online is almost always cheaper than paying at the airport.