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Tempe

$56+ 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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PHX
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Tempe are usually found in August or September, booked 76 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 July 29, 2025.

Round-trip from

$209
(Cheapflightsfares)

One-way from

$56
(CheapOair)

Popular in

March

Cheapest in

August

Average price

$341
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. 11% potential increase in price ($48 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 July 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 July 29, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 7/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/172:30 pmSTL - PHX
1 stop9h 07mSpirit Airlines
Sun 8/2410:42 pmPHX - STL
1 stop12h 50mSpirit Airlines
Deal found 7/29$209
This American Airlines deal was found by Cheapflights users on 7/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/267:53 amSTL - PHX
Nonstop3h 15mAmerican Airlines
Thu 9/412:59 pmPHX - STL
Nonstop3h 01mAmerican Airlines
Deal found 7/29$211
This CheapOair deal was found by Cheapflights users on 7/29. 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.
Thu 9/1112:05 pmSTL - PHX
1 stop11h 59mMultiple Airlines
Tue 9/2312:47 pmPHX - STL
1 stop18h 19mMultiple Airlines
Deal found 7/29$214
This Justfly.com deal was found by Cheapflights users on 7/29. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/71:54 pmSTL - PHX
Nonstop3h 22mFrontier
Mon 11/108:00 amPHX - STL
Nonstop2h 59mFrontier
Deal found 7/29$224
This Southwest deal was found by Cheapflights users on 7/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/88:45 pmSTL - PHX
Nonstop3h 20mSouthwest
Mon 10/136:55 pmPHX - STL
Nonstop2h 55mSouthwest
Deal found 7/29$229
This Delta deal was found by Cheapflights users on 7/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/67:40 pmSTL - PHX
1 stop5h 58mDelta
Mon 11/1012:59 amPHX - STL
1 stop6h 45mDelta
Deal found 7/29$244
This United Airlines deal was found by Cheapflights users on 7/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/234:40 pmSTL - PHX
1 stop5h 37mUnited Airlines
Tue 8/261:35 pmPHX - STL
1 stop5h 11mUnited Airlines
Deal found 7/27$292

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 July 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

Sun 8/17

2:30 pm-9:37 pm

1 stop9h 07m

Phoenix Sky Harbor Intl

Sun 8/24

10:42 pm-1:32 pm

1 stop12h 50m

$209

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Tue 8/26

7:53 am-9:08 am

Nonstop3h 15m

Phoenix Sky Harbor Intl

Thu 9/4

12:59 pm-6:00 pm

Nonstop3h 01m

$211

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Thu 9/11

12:05 pm-10:04 pm

1 stop11h 59m

Phoenix Sky Harbor Intl

Tue 9/23

12:47 pm-9:06 am

1 stop18h 19m

$214

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Fri 11/7

1:54 pm-4:16 pm

Nonstop3h 22m

Phoenix Sky Harbor Intl

Mon 11/10

8:00 am-11:59 am

Nonstop2h 59m

$224

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Wed 10/8

8:45 pm-10:05 pm

Nonstop3h 20m

Phoenix Sky Harbor Intl

Mon 10/13

6:55 pm-11:50 pm

Nonstop2h 55m

$229

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Thu 11/6

7:40 pm-12:38 am

1 stop5h 58m

Phoenix Sky Harbor Intl

Tue 11/11

11:05 am-5:57 pm

1 stop5h 52m

$244

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Sat 8/23

4:40 pm-8:17 pm

1 stop5h 37m

Phoenix Sky Harbor Intl

Tue 8/26

1:35 pm-8:46 pm

1 stop5h 11m

$292

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Thu 9/25

12:05 pm-10:04 pm

1 stop11h 59m

$56

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Mon 10/20

2:54 pm-4:16 pm

Nonstop3h 22m

$88

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Fri 8/29

2:30 pm-11:20 pm

1 stop10h 50m

$114

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 14 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 July 25, 2025.

Booking 76 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, January is the cheapest month in which you can book a flight from St. Louis to Tempe (average of $258). Flying from St. Louis to Tempe in March is currently the most expensive (average of $337). 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 July 29, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from St. Louis to Tempe as you normally would.

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 Wednesday evenings when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 July 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
4,238 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,238 reviews
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Delta
8.0
Very good
7,977 reviews
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,899 reviews
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Spirit Airlines
6.3
Okay
8,040 reviews
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

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 6 outbound flights to Tempe per day. 6 airlines have flights to Tempe from Lambert-St Louis on a regular basis.

  • What are the cheapest airlines to fly from St. Louis to Tempe one-way?

    The cheapest airlines for a one-way flight from St. Louis to Tempe are Spirit Airlines ($56), Frontier ($88), and American Airlines ($138).

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

    Consider SkyWest Airlines (74%), Southwest (73%) or American Airlines (56%) 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 $309, our data shows the cheapest flight currently is $92. When looking at the most popular route, (Lambert-St Louis - Phoenix Sky Harbor Intl), you can expect to pay $175 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, January is the cheapest month in which you can book a flight from St. Louis to Tempe (average of $258). Flying from St. Louis to Tempe in March is currently the most expensive (average of $337). 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

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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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$108Average$210FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$154Average$200FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$205Average$401FlexibilityNo cancel feeOn-time71%
DeltaCheapest$216Average$356FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$263Average$383FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$277Average$437FlexibilityNo cancel feeOn-time63%

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