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Tempe

$37+ Cheap flights from St. Louis (STL) to Tempe, AZ

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/5. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PHX
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Tempe are usually found in November or October, booked 87 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from St. Louis to Tempe

Keep the following information in mind while searching for St. Louis to Tempe flight deals. Data was last updated October 29, 2025.

Round-trip from

$145
(Kiwi.com)

One-way from

$37
(Kiwi.com)

Popular in

March

Cheapest in

November

Average price

$333
From Lambert-St Louis to Tempe
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One-way flight from Lambert-St Louis to Tempe
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Highest demand for flights based on searches. 9% potential increase in price ($38 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from St. Louis to Tempe

Cheapest flights from St. Louis to Tempe
Explore the most affordable flight options available from St. Louis to Tempe. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/228:52 pmSTL - PHX
Nonstop3h 31mFrontier
Mon 1/54:10 pmPHX - STL
Nonstop2h 57mFrontier
Deal found 10/27$145
This Trip.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/37:43 pmSTL - PHX
1 stop13h 23mFrontier
Mon 12/87:25 amPHX - STL
Nonstop2h 57mFrontier
Deal found 10/28$146
This Kiwi.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/283:53 pmSTL - PHX
Nonstop3h 33mFrontier
Fri 12/510:26 pmPHX - STL
1 stop10h 48mFrontier
Deal found 10/29$147
This Frontier deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/132:42 pmSTL - PHX
1 stop9h 47mFrontier
Mon 11/177:01 amPHX - STL
1 stop12h 11mFrontier
Deal found 10/29$150
This CheapOair deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/107:43 pmSTL - PHX
1 stop13h 23mFrontier
Fri 12/127:25 amPHX - STL
Nonstop2h 57mFrontier
Deal found 10/29$152
This Kiwi.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1012:09 pmSTL - PHX
Nonstop3h 22mFrontier
Mon 11/177:25 amPHX - STL
Nonstop2h 59mFrontier
Deal found 10/28$153
This Kiwi.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/512:07 pmSTL - PHX
Nonstop3h 31mFrontier
Sun 12/146:00 amPHX - STL
1 stop26h 52mFrontier
Deal found 10/27$154
This Priceline deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1012:09 pmSTL - PHX
Nonstop3h 22mFrontier
Thu 11/137:01 amPHX - STL
1 stop5h 56mFrontier
Deal found 10/27$155
This Frontier deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1412:09 pmSTL - PHX
Nonstop3h 22mFrontier
Mon 11/177:25 amPHX - STL
Nonstop2h 59mFrontier
Deal found 10/28$157
This Frontier deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1712:09 pmSTL - PHX
Nonstop3h 22mFrontier
Fri 11/2111:14 amPHX - STL
Nonstop2h 54mFrontier
Deal found 10/28$158
This Kiwi.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/57:43 pmSTL - PHX
1 stop13h 23mFrontier
Tue 12/94:32 pmPHX - STL
1 stop16h 42mFrontier
Deal found 10/29$159

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Tempe that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 29, 2025.
Use the filters below to find and compare flights from St. Louis to Tempe that are best for you.

Fly from

St. Louis

Fly to

Tempe

Route

Depart

Return

Price

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Fri 12/12

5:10 pm-7:35 pm

Nonstop3h 25m

Phoenix Sky Harbor Intl

Wed 12/17

6:30 pm-10:20 pm

Nonstop2h 50m

$174

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Mon 11/10

5:20 am-7:45 am

Nonstop3h 25m

Phoenix Sky Harbor Intl

Fri 11/14

6:30 am-10:20 am

Nonstop2h 50m

$213

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Sat 12/6

5:00 pm-11:55 pm

1 stop7h 55m

Phoenix Sky Harbor Intl

Mon 12/8

6:30 pm-12:48 am

1 stop5h 18m

$223

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Sat 12/6

5:50 pm-8:15 pm

Nonstop3h 25m

Phoenix Sky Harbor Intl

Mon 12/8

4:40 pm-8:30 pm

Nonstop2h 50m

$255

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Mon 11/10

5:20 am-7:45 am

Nonstop3h 25m

Phoenix Sky Harbor Intl

Sat 11/15

6:20 pm-10:10 pm

Nonstop2h 50m

$262

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Mon 11/24

12:49 pm-5:48 pm

1 stop5h 59m

Phoenix Sky Harbor Intl

Mon 12/1

12:59 am-9:10 am

1 stop7h 11m

$282

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Wed 12/3

5:34 pm-12:04 am

1 stop7h 30m

Phoenix Sky Harbor Intl

Sun 12/7

7:00 am-1:30 pm

1 stop5h 30m

$287

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Fri 11/28

6:34 am-1:08 pm

1 stop7h 34m

Phoenix Sky Harbor Intl

Thu 12/4

12:59 am-9:10 am

1 stop7h 11m

$293

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Mon 11/10

5:20 am-7:45 am

Nonstop3h 25m

Phoenix Sky Harbor Intl

Tue 11/11

4:15 pm-8:05 pm

Nonstop2h 50m

$299

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Wed 12/3

7:35 am-12:40 pm

1 stop6h 05m

Phoenix Sky Harbor Intl

Sun 12/7

6:30 am-10:20 am

Nonstop2h 50m

$318

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 22 results
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Best time to book a flight from St. Louis to Tempe

Have a flexible travel schedule? Discover the best time to fly to Tempe from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Tempe

How far ahead should I book a flight from St. Louis to Tempe?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Tempe. Price data was last updated on October 24, 2025.

Booking 87 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Tempe. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from St. Louis to Tempe?

Currently, October is the cheapest month in which you can book a flight from St. Louis to Tempe (average of $121). Flying from St. Louis to Tempe in June is currently the most expensive (average of $235). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to TM9?

Find hourly flight availability from St. Louis to Tempe. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 29, 2025.

One of the essential ways to save on airfare from St. Louis to Tempe is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 56% on airfare.

What is the cheapest day to fly from St. Louis to Tempe?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Tempe. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their St. Louis to Tempe flight should consider departing on Friday evenings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from St. Louis to Tempe?

Reviews of airlines servicing Tempe

Get insights into the airlines that provide service to Tempe. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Tempe. Reviews last updated October 29, 2025.
Read reviews from past customers who have flown Southwest, Delta, and United Airlines from St. Louis to Tempe. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
7.9
Good
7,992 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,999 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
11,032 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,124 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Tempe. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Tempe?

    For a flight from St. Louis to Tempe, you will be flying from Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city. Lambert-St Louis is the only St. Louis airport and it handles 4 outbound flights to Tempe per day. 6 airlines have flights to Tempe from Lambert-St Louis on a regular basis.

  • How long is the flight from St. Louis to Tempe?

    Departing from St. Louis to Tempe will take you 3h 25m. The distance from St. Louis to Tempe is about 1258 mi. This flight may include one or multiple stops.

  • What are the most reliable airlines from St. Louis to Tempe?

    Consider SkyWest Airlines (100%), Southwest (76%) or Alaska Airlines (72%) when booking your flight. These represent the most reliable airlines when flying from St. Louis to Tempe.

  • What are the cheapest flights from St. Louis to Tempe?

    While on average a flight from St. Louis to Tempe is generally $416, our data shows the cheapest flight currently is $79. When looking at the most popular route, (Lambert-St Louis - Phoenix Sky Harbor Intl), you can expect to pay $139 for that flight.

  • Can I find deals for flights from St. Louis to Tempe that include hotel bookings?

    Yes. In addition to deals on St. Louis to Tempe flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Tempe?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Tempe.

  • Can I find deals for business class flights from St. Louis to Tempe?

    Yes. Cheapflights offers flight deals from St. Louis to Tempe by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Tempe?

    Currently, October is the cheapest month in which you can book a flight from St. Louis to Tempe (average of $121). Flying from St. Louis to Tempe in June is currently the most expensive (average of $235). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from St. Louis to Tempe

Discover the top 6 airlines that operate flights from St. Louis to Tempe. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$99Average$207FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$158Average$200FlexibilityNo cancel feeOn-time65%
DeltaCheapest$236Average$357FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$243Average$400FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$251Average$419FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$294Average$391FlexibilityNo cancel feeOn-time69%

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