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Flights from St. Louis to Phoenix
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Find St. Louis to Phoenix flights starting at CAD 57.

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

  • One way
  • Round-trip
      • Cheapest nonstop
        STL07:20
        3h 36m
        Nonstop
        PHX09:56
        Fri, Dec 13|St. Louis - Phoenix|American Airlines
        CAD 216CAD 311
        31% OFF
        31% OFF
        CAD 311CAD 216

        Choose American Airlines flights from St. Louis to Phoenix. The one-way direct flight with American Airlines departs from St. Louis Lambert International Airport on Fri, Dec 13, arriving at Sky Harbor International Airport. One-way Prices start from CAD 216 including taxes and charges.

      • STL07:15
        3h 40m
        Nonstop
        PHX09:55
        Wed, Jan 8|St. Louis - Phoenix|American Airlines
        CAD 224CAD 311
        28% OFF
        28% OFF
        CAD 311CAD 224

        Choose American Airlines flights from St. Louis to Phoenix. The one-way direct flight with American Airlines departs from St. Louis Lambert International Airport on Wed, Jan 8, arriving at Sky Harbor International Airport. One-way Prices start from CAD 224 including taxes and charges.

      • STL21:46
        10h 50m
        1 stop
        PHX07:36
        Tue, Dec 17|St. Louis - Phoenix|Frontier Airlines
        CAD 57CAD 311
        82% OFF
        82% OFF
        CAD 311CAD 57

        Choose Frontier Airlines flights from St. Louis to Phoenix. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Tue, Dec 17, arriving at Sky Harbor International Airport. One-way Prices start from CAD 57 including taxes and charges.

      • STL18:49
        6h 33m
        1 stop
        PHX00:22
        Wed, Dec 18|St. Louis - Phoenix|Frontier Airlines
        CAD 74
        CAD 74

        Choose Frontier Airlines flights from St. Louis to Phoenix. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Wed, Dec 18, arriving at Sky Harbor International Airport. One-way Prices start from CAD 74 including taxes and charges.

      • STL18:46
        6h 40m
        1 stop
        PHX00:26
        Wed, Jan 15|St. Louis - Phoenix|Frontier Airlines
        CAD 74
        CAD 74

        Choose Frontier Airlines flights from St. Louis to Phoenix. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Wed, Jan 15, arriving at Sky Harbor International Airport. One-way Prices start from CAD 74 including taxes and charges.

      • STL18:46
        6h 34m
        1 stop
        PHX00:20
        Sat, Jan 11|St. Louis - Phoenix|Frontier Airlines
        CAD 75
        CAD 75

        Choose Frontier Airlines flights from St. Louis to Phoenix. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Sat, Jan 11, arriving at Sky Harbor International Airport. One-way Prices start from CAD 75 including taxes and charges.

      • STL18:46
        6h 34m
        1 stop
        PHX00:20
        Mon, Dec 16|St. Louis - Phoenix|Frontier Airlines
        CAD 75
        CAD 75

        Choose Frontier Airlines flights from St. Louis to Phoenix. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Mon, Dec 16, arriving at Sky Harbor International Airport. One-way Prices start from CAD 75 including taxes and charges.

      • STL18:54
        7h 5m
        1 stop
        PHX00:59
        Sat, Mar 1|St. Louis - Phoenix|Frontier Airlines
        CAD 76
        CAD 76

        Choose Frontier Airlines flights from St. Louis to Phoenix. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Sat, Mar 1, arriving at Sky Harbor International Airport. One-way Prices start from CAD 76 including taxes and charges.

      • STL19:09
        6h 17m
        1 stop
        PHX00:26
        Sat, Feb 1|St. Louis - Phoenix|Frontier Airlines
        CAD 76
        CAD 76

        Choose Frontier Airlines flights from St. Louis to Phoenix. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Sat, Feb 1, arriving at Sky Harbor International Airport. One-way Prices start from CAD 76 including taxes and charges.

      • STL18:53
        7h 7m
        1 stop
        PHX01:00
        Sat, Feb 15|St. Louis - Phoenix|Frontier Airlines
        CAD 76
        CAD 76

        Choose Frontier Airlines flights from St. Louis to Phoenix. The one-way connecting flight with Frontier Airlines departs from St. Louis Lambert International Airport on Sat, Feb 15, arriving at Sky Harbor International Airport. One-way Prices start from CAD 76 including taxes and charges.

      • STL13:00
        3h 5m
        Nonstop
        PHX14:00
        Mon, Dec 16|St. Louis - Phoenix|American Airlines
        Find More Flights
        Find More Flights

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

When is the cheapest time to fly from St. Louis to Phoenix?

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.

Find Cheapest Airlines Flying from St. Louis to Phoenix

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

Frontier Airlines
From CAD 57
Southern Airways Express
From CAD 152
Alaska Airlines
From CAD 177
United Airlines
From CAD 201
Delta Air Lines
From CAD 201
Southwest Airlines
From CAD 204
American Airlines
From CAD 214

Find more flights and airlines

Alternative Routes for St. Louis to Phoenix Flights

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

  • Cheapest
    Frontier Airlines
    STL
    21:46
    10h 50m
    1 transfer
    PHX
    07:36
    St.Louis Lambert International Airport - Sky Harbor International Airport
    Tue, Dec 17Frontier Airlines
    CAD 57
  • Delta Air Lines
    STL
    06:00
    13h 6m
    1 transfer
    AZA
    18:06
    St.Louis Lambert International Airport - Phoenix–Mesa Gateway Airport
    Mon, Dec 9Delta Air Lines
    CAD 418
  • Delta Air Lines
    STL
    06:00
    13h 6m
    1 transfer
    AZA
    18:06
    St.Louis Lambert International Airport - Phoenix–Mesa Gateway Airport
    Mon, Dec 9Delta Air Lines
    CAD 418
    Find More Flights

FAQ

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

    Airlines adjust prices for flights from St. Louis to Phoenix based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the cheapest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much are flights from St. Louis (STL) to Phoenix (PHX) cost?

    According to Trip.com's data, the lowest price is around CAD 433.

  • How long is the flight from St. Louis (STL) to Phoenix (PHX)?

    It takes about 4 hours 17 minutes to fly from St. Louis (STL) to Phoenix (PHX).

  • What are the most popular airlines that fly from St. Louis (STL) to Phoenix (PHX)?

    Airlines with flights from St. Louis (STL) to Phoenix (PHX): Alaska Airlines, United Airlines, Southwest Airlines and American Airlines.

  • What's the most popular airline for direct flights from St. Louis (STL) to Phoenix (PHX)?

    American Airlines operates 11 direct flights from St. Louis (STL) to Phoenix (PHX).

  • How many airports in Phoenix (PHX)?

How to find a cheap flight from St. Louis to Phoenix

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from St. Louis to Phoenix. Book your flights at the right time and save more.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com

Flight Information for St. Louis to Phoenix Flights

Cheapest direct flight priceCAD 56
Cheapest return ticket priceCAD 295
Off-season travel monthNovember
Peak season for travelMarch
Flight distance2,042.1km
Average flight time4 hours 17 minutes
Popular airlineAmerican Airlines

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