"Don't confuse this airport with Ontario, Canada. Ontario International Airport in California is a secondary airport in the Los Angeles area, offering a less-crowded experience to LAX. And it has cheaper flights, too, thanks to main airlines Frontier and Southwest." - Stefanie Waldek Stefanie Waldek Stefanie Waldek is a freelance space, travel, and design journalist with expertise in aviation, meteorology, and polar regions. She was a former editor at Architectural Digest, TripAdvi