Worldwide Coverage
Worldwide Coverage
Flights to over 5,000 cities
One-stop Service Guarantee
One-stop Service Guarantee
Price guaranteed upon confirmed payment, booking guaranteed once tickets issued
Secure Payment
Secure Payment
Convenient & reliable booking and payment system

Flights from Phoenix to St. Louis Starting at AU$ 58

We've found these cheap flights for you. You can book one-way or return flight tickets.

  • One way
  • Return

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Find the best time to fly from Phoenix to St. Louis

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Airlines Flying from Phoenix to St. Louis

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Frontier Airlines
From AU$ 58
United Airlines
From AU$ 173
Sun Country Airlines
From AU$ 195
Spirit Airlines
From AU$ 215
American Airlines
From AU$ 219
Southwest Airlines
From AU$ 225
Alaska Airlines
From AU$ 282
Delta Air Lines
From AU$ 333
ANA airlines

Find more flights and airlines

Alternative Routes from Phoenix to St. Louis

Searching for potential routes that might be cheaper and faster? Check out these alternative flights from Phoenix to St. Louis.

  • Cheapest
    Frontier Airlines
    PHX
    15:45
    2h 54m
    Direct
    STL
    20:39
    Sky Harbor International Airport - St. Louis Lambert International Airport
    Wed, May 15Frontier Airlines
    AU$ 58
  • Allegiant Air
    AZA
    09:00
    10h 49m
    1 transfer
    STL
    21:49
    Phoenix-Mesa Gateway Airport - St. Louis Lambert International Airport
    Wed, Apr 17Allegiant Air
    AU$ 582
  • Allegiant Air
    AZA
    09:00
    10h 49m
    1 transfer
    STL
    21:49
    Phoenix-Mesa Gateway Airport - St. Louis Lambert International Airport
    Wed, Apr 17Allegiant Air
    AU$ 582
    Find More Flights

How do I find the cheapest flights?

  • When are flight from Phoenix (PHX) to St. Louis (STL) the cheapest?

    Airlines adjust prices for flights from Phoenix to St. Louis based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
  • How much are flights from Phoenix (PHX) to St. Louis (STL) cost?

    According to Trip.com's data, the lowest price is around AU$ 497.
  • How long is the flights from Phoenix (PHX) to St. Louis (STL)?

    It takes about 3 hours 8 minutes to fly from Phoenix (PHX) to St. Louis (STL).
  • What is the transportation method from the main airport to downtown in St. Louis?

    • The distance from St. Louis Lambert International Airport to downtown is about 20km, by taxi about 40 minutes.
  • What are the most popular airlines that fly from Phoenix (PHX) to St. Louis (STL)?

    Airlines with flights from Phoenix (PHX) to St. Louis (STL): Alaska Airlines, American Airlines and Southwest Airlines.
  • What's the most popular airline for direct flights from Phoenix (PHX) to St. Louis (STL)?

    American Airlines operates 2 direct flights from Phoenix (PHX) to St. Louis (STL).
  • How many airports in St. Louis (STL)?

Flight Information from Phoenix to St. Louis

Cheapest direct flight price

AU$ 58

Cheapest return ticket price

AU$ 121

Off-season for travel

May

Peak season for travel

September