Cheap flights from Phoenix to St. Louis

Good to know

Flight information for Phoenix to St. Louis to help you plan your next trip.
Cheapest round-trip flight
$68
Frontier Nonstop 4 hr Aug 24 — Aug 26
The cheapest round-trip flight from Phoenix to St. Louis is currently $68
Cheapest one-way flight
$29
Frontier Nonstop 4 hr Aug 21
The cheapest one-way flight from Phoenix to St. Louis is currently $29
Fastest flight
2 hr 54 min
The fastest nonstop flight from Phoenix to St. Louis takes 2 hr 54 min
Nonstop flights
Every day
There are direct flights on this route every day.

When is the cheapest time to fly?

The cheapest month to fly from Phoenix to St. Louis is typically May. The most expensive one is typically March.
May
Cheapest
Typical prices: $100–200
March
Most expensive
Typical prices: $175–295

Popular airports near Phoenix

  • Phoenix Sky Harbor International Airport (PHX)
    Phoenix 13 min 3 mi
  • Phoenix-Mesa Gateway Airport (AZA)
    Phoenix 41 min 25 mi
  • Scottsdale Airport (SCF)
    Phoenix 31 min 15 mi
  • Tucson International Airport (TUS)
    Tucson 1 hr 57 min 112 mi

Popular airports near St. Louis

  • St. Louis Lambert International Airport (STL)
    St. Louis 22 min 12 mi
  • General Wayne A. Downing Peoria International Airport (PIA)
    Peoria 2 hr 34 min 143 mi
  • Indianapolis International Airport (IND)
    Indianapolis 3 hr 29 min 222 mi
  • Evansville Regional Airport (EVV)
    Evansville 2 hr 30 min 150 mi

Frequently asked questions about flying from Phoenix to St. Louis

How long does it take to fly from Phoenix to St. Louis?
2 hr 54 min is the shortest flight time from Phoenix to St. Louis.
When are the cheapest days to fly from Phoenix to St. Louis?
The cheapest days to fly are usually in May. Typical prices range from $100 to $200.
Which airlines provide the cheapest flights from Phoenix to St. Louis?
The best round-trip deal recently found on Google Flights from Phoenix to St. Louis was with Frontier from $68. The best one-way deal was with Frontier from $29.
When are direct flights from Phoenix to St. Louis available?
There are direct flights from Phoenix to St. Louis on a daily basis.
Which airlines have direct flights from Phoenix to St. Louis?
Southwest, American and Frontier fly direct from Phoenix to St. Louis.
What are the cheapest flights from Phoenix to St. Louis?
The cheapest round-trip flight from Phoenix to St. Louis starts at $68 from Sat, Aug 24 to Mon, Aug 26. The cheapest one-way flight starts at $29 and departs on Wed, Aug 21.
When should you visit St. Louis?
Apr–Sep is the most popular time to visit, coinciding with hot, humid summer and events like Fair St. Louis, a huge Fourth of July festival at Forest Park, and the Taste of St. Louis food festival (Sep). Weather in winter is cold, with occasional snow.
How do I find cheap dates to fly from Phoenix to St. Louis
It's easy to use Google Flights to find the cheapest days to fly from Phoenix to St. Louis.
Just click the Departure label near the top of the page to open the calendar. Choose a start date and a return date to see how the round-trip fare changes on those specific days.
Adjust the trip type to see one-way fares. The cheapest available flights are highlighted and easy to spot. Once you settle on dates, click the Search button to see flight options and book the deal.

You can also turn on price tracking to get alerts if the price changes for a route or flight.

Search more flights

Popular trips from Phoenix

  1. Seattle
    $64
    Aug 17 — Aug 19
    Nonstop 3 hr 7 min Frontier
  2. Chicago
    $74
    Aug 10 — Aug 12
    Nonstop 3 hr 28 min Frontier
  3. Los Angeles
    $51
    Aug 24 — Aug 26
    Nonstop 1 hr 25 min Frontier
  4. London
    $676
    Nov 1 — Nov 4
    1 stop 17 hr 25 min WestJet

Find flights from Phoenix to anywhere

More places to fly