STL - PHX
$307 - $360
|Popular in||December||High demand for flights, 7% potential price rise|
|Cheapest in||January||Best time to find cheap flights, 8% potential price drop|
|Average price||$347||Average for round-trip flights in July 2020|
|Round-trip from||$307||From St Louis to Sky Harbor International|
Monday is generally a great day to depart. Flying on this day could help you save up to 14%.
To save on the cost of your flight from St Louis to Sky Harbor International, book at least 31 days before your planned departure. Booking around this time can save you about 11% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $86 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $92.
September can be a great time to fly to Sky Harbor International from St Louis with a flight ticket averaging about $145. Cheapflights users have found deals in the month of September for as cheap as $37. The most expensive prices can be found in the month of March.
|Morning 6 AM to noon||72% of STL to PHX departures|
|Afternoon Noon to 6 PM||14% of STL to PHX departures|
|Evening 6 PM to midnight||14% of STL to PHX departures|
|Early morning Midnight to 6 AM||0% of STL to PHX departures|