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Flights from St. Louis to Phoenix
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Flights from St. Louis to Phoenix Starting at NZD 68

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
        NZD 260NZD 304
        14% OFF
        14% OFF
        NZD 304NZD 260

        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 NZD 260 including taxes and charges.

      • STL07:15
        3h 40m
        Nonstop
        PHX09:55
        Wed, Jan 8|St. Louis - Phoenix|American Airlines
        NZD 271NZD 304
        11% OFF
        11% OFF
        NZD 304NZD 271

        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 NZD 271 including taxes and charges.

      • STL21:46
        10h 50m
        1 stop
        PHX07:36
        Tue, Dec 17|St. Louis - Phoenix|Frontier Airlines
        NZD 68NZD 304
        78% OFF
        78% OFF
        NZD 304NZD 68

        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 NZD 68 including taxes and charges.

      • STL20:34
        12h 44m
        1 stop
        PHX08:18
        Sun, Dec 8|St. Louis - Phoenix|Frontier Airlines
        NZD 88
        NZD 88

        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 Sun, Dec 8, arriving at Sky Harbor International Airport. One-way Prices start from NZD 88 including taxes and charges.

      • STL18:46
        6h 40m
        1 stop
        PHX00:26
        Wed, Jan 15|St. Louis - Phoenix|Frontier Airlines
        NZD 89
        NZD 89

        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 NZD 89 including taxes and charges.

      • STL18:46
        6h 34m
        1 stop
        PHX00:20
        Sat, Jan 11|St. Louis - Phoenix|Frontier Airlines
        NZD 90
        NZD 90

        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 NZD 90 including taxes and charges.

      • STL18:46
        6h 34m
        1 stop
        PHX00:20
        Mon, Dec 16|St. Louis - Phoenix|Frontier Airlines
        NZD 91
        NZD 91

        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 NZD 91 including taxes and charges.

      • STL19:09
        6h 17m
        1 stop
        PHX00:26
        Sat, Feb 1|St. Louis - Phoenix|Frontier Airlines
        NZD 92
        NZD 92

        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 NZD 92 including taxes and charges.

      • STL18:53
        7h 7m
        1 stop
        PHX01:00
        Sat, Feb 15|St. Louis - Phoenix|Frontier Airlines
        NZD 92
        NZD 92

        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 NZD 92 including taxes and charges.

      • STL18:53
        7h 7m
        1 stop
        PHX01:00
        Sat, Mar 1|St. Louis - Phoenix|Frontier Airlines
        NZD 92
        NZD 92

        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 NZD 92 including taxes and charges.

      • STL13:00
        3h 5m
        Nonstop
        PHX14:00
        Thu, Dec 12|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.

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

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Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

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 NZD 68
Alaska Airlines
From NZD 213
Delta Air Lines
From NZD 242
United Airlines
From NZD 243
Southwest Airlines
From NZD 258
American Airlines
From NZD 260
Southern Airways Express
From NZD 298

Find more flights and airlines

Alternative Routes from St. Louis to Phoenix

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
    NZD 68
  • 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
    NZD 505
  • 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
    NZD 505
    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 departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

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

    According to Trip.com's data, the lowest price is around NZD 522.

  • How long does it take to fly from St. Louis (STL) to Phoenix (PHX) and what is the distance?

    It takes around 4 hours 21 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.

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 from St. Louis to Phoenix

Cheapest nonstop flight priceNZD 88
Cheapest round-trip ticket priceNZD 356
Off-season for travelNovember
Peak season for travelMarch
Flight distance2,042.1 km
Average flight time4 hours 21 minutes
Popular airlineAmerican Airlines

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