May in Phoenix brings warm, sunny conditions ideal for travel from Phoenix Sky Harbor International Airport (PHX), but also rising passenger counts around Memorial Day weekend. Expect nonstop and connecting PHX to STL flights, with nonstop options primarily on Southwest and American Airlines; average nonstop flight time is about 2 hours 50 minutes to 3 hours. For May savings, book 3–8 weeks in advance, fly midweek, and compare flexible-date fares. Use airport amenities — lounges, restaurants, and efficient ground transport options like the PHX Sky Train — to streamline your departure. If traveling to nearby destinations (Scottsdale, Sedona, Grand Canyon), allow extra time for car rentals and shuttle pickups as demand climbs in late spring. Book now to lock in cheap flights from PHX to STL this May and check carrier baggage policies before heading to the terminal.
May is a popular month to arrive at Lambert-St. Louis International Airport (STL) thanks to pleasant spring weather and baseball season. Nonstop flights from Phoenix Sky Harbor International Airport (PHX) are common and get you into town quickly; average flight time hovers around 2 hours 50 minutes to 3 hours. Once you land, use MetroLink, rideshares, or short-term rentals to reach Riverfront attractions, Forest Park, and nearby suburbs. For best value, prebook parking or rental cars and check MLB game schedules if you plan to attend a Cardinals game. Book your May arrival plans now and compare transit options to save time and money after flying into STL.
Starting from $160
Book your economy class flight from Phoenix (PHX) to St Louis (STL)and save money on your travel. Compare all flight options to find the best deal for your may trip.
Starting from $172
Book your economy class flight from Phoenix (PHX) to St Louis (STL)and save money on your travel. Compare all flight options to find the best deal for your may trip.
Starting from $180
Book your economy class flight from Phoenix (PHX) to St Louis (STL)and save money on your travel. Compare all flight options to find the best deal for your may trip.
Starting from $180
Book your economy class flight from Phoenix (PHX) to St Louis (STL)and save money on your travel. Compare all flight options to find the best deal for your may trip.
Starting from $180
Book your economy class flight from Phoenix (PHX) to St Louis (STL)and save money on your travel. Compare all flight options to find the best deal for your may trip.
Starting from $230
Book your economy class flight from Phoenix (PHX) to St Louis (STL)and save money on your travel. Compare all flight options to find the best deal for your may trip.
Planning a trip from Phoenix (PHX) to St Louis (STL) in may? SlickTrip helps you find the cheapest economy class flights with our comprehensive flight comparison tool. Whether you prefer direct flights for convenience or multi-stop flights for savings, we have options for every budget and schedule.