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Tempe

$79+ 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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PHX
abr. 25 — may. 21
sáb. 4/25
sáb. 5/2
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 24 days in advance, depart on a Wednesday or Monday and return on a Friday

Cheap 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 marzo 26, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/21. 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.
sáb. 5/308:08 pm
STL
-
PHX
1 stop13h 36m
Frontier
mar. 6/26:30 am
PHX
-
STL
1 stop6h 18m
Frontier
Deal found 3/21$217
This Kiwi.com deal was found by Cheapflights users on 3/21. 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.
mié. 5/136:51 pm
STL
-
PHX
2 stops31h 06m
Frontier
dom. 5/1711:30 pm
PHX
-
STL
1 stop7h 25m
Frontier
Deal found 3/21$218
This Kiwi.com deal was found by Cheapflights users on 3/23. 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.
vie. 4/108:16 pm
STL
-
PHX
1 stop17h 29m
Frontier
jue. 4/1612:30 am
PHX
-
STL
1 stop20h 49m
Frontier
Deal found 3/23$219
This Frontier deal was found by Cheapflights users on 3/21. 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.
sáb. 4/111:06 pm
STL
-
PHX
Nonstop3h 35m
Frontier
sáb. 4/189:52 am
PHX
-
STL
1 stop7h 40m
Frontier
Deal found 3/21$224
This Expedia deal was found by Cheapflights users on 3/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 4/38:16 pm
STL
-
PHX
1 stop5h 31m
Frontier
vie. 4/109:24 pm
PHX
-
STL
1 stop10h 24m
Frontier
Deal found 3/21$225
This Kiwi.com deal was found by Cheapflights users on 3/22. 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.
vie. 5/18:06 pm
STL
-
PHX
1 stop5h 36m
Frontier
dom. 5/1011:30 pm
PHX
-
STL
1 stop7h 25m
Frontier
Deal found 3/22$227
This Kiwi.com deal was found by Cheapflights users on 3/21. 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.
lun. 4/68:19 pm
STL
-
PHX
1 stop5h 38m
Frontier
mar. 4/146:50 am
PHX
-
STL
2 stops22h 00m
Frontier
Deal found 3/21$228
This Expedia deal was found by Cheapflights users on 3/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 4/199:55 pm
STL
-
PHX
1 stop24h 46m
Frontier
sáb. 4/2512:25 am
PHX
-
STL
1 stop20h 54m
Frontier
Deal found 3/22$230
This Kiwi.com deal was found by Cheapflights users on 3/23. 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.
sáb. 4/111:06 pm
STL
-
PHX
Nonstop3h 35m
Frontier
lun. 4/1312:30 am
PHX
-
STL
1 stop20h 49m
Frontier
Deal found 3/23$231
This Kiwi.com deal was found by Cheapflights users on 3/22. 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.
vie. 5/18:06 pm
STL
-
PHX
1 stop5h 36m
Frontier
sáb. 5/95:15 am
PHX
-
STL
1 stop12h 08m
Frontier
Deal found 3/22$232
This Kiwi.com deal was found by Cheapflights users on 3/21. 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.
dom. 4/510:12 pm
STL
-
PHX
1 stop14h 01m
Frontier
mar. 4/146:50 am
PHX
-
STL
2 stops22h 00m
Frontier
Deal found 3/21$234

Find 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 marzo 26, 2026.

Round-trip from

$217
(Kiwi.com)

One-way from

$79
(Super.com)

Popular in

March

Cheapest in

November

Average price

$390
From Lambert-St Louis to Tempe
Search Deals
One-way flight from Lambert-St Louis to Tempe
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($26 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 marzo 26, 2026.
Use the filters below to find and compare flights from St. Louis to Tempe that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

vie. 6/5

9:21 pm-11:24 pm

1 stop28h 03m

Phoenix Sky Harbor Intl

lun. 6/22

8:40 am-7:23 pm

1 stop8h 43m

$243

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

lun. 4/20

6:05 am-7:30 am

Nonstop3h 25m

Phoenix Sky Harbor Intl

mar. 4/21

5:35 am-10:25 am

Nonstop2h 50m

$278

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

mié. 5/6

3:55 pm-7:55 pm

1 stop6h 00m

Phoenix Sky Harbor Intl

dom. 5/10

7:55 am-12:55 pm

Nonstop3h 00m

$336

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

sáb. 4/25

2:05 pm-7:50 pm

1 stop7h 45m

Phoenix Sky Harbor Intl

vie. 5/1

5:15 am-10:05 am

Nonstop2h 50m

$343

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

sáb. 5/30

5:40 am-10:35 am

1 stop6h 55m

Phoenix Sky Harbor Intl

mar. 6/2

5:35 am-10:25 am

Nonstop2h 50m

$385
Quickest round-trip

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

vie. 6/5

6:45 pm-7:55 pm

Nonstop3h 10m

Phoenix Sky Harbor Intl

lun. 6/22

8:55 pm-1:50 am

Nonstop2h 55m

$396

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

vie. 5/15

6:21 am-10:49 am

1 stop6h 28m

Phoenix Sky Harbor Intl

mar. 5/19

12:59 am-8:46 am

1 stop5h 47m

$415

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

vie. 4/17

5:15 pm-9:10 pm

1 stop5h 55m

Phoenix Sky Harbor Intl

lun. 4/20

7:40 pm-12:30 am

Nonstop2h 50m

$432

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

vie. 9/11

7:30 am-12:07 pm

1 stop6h 37m

Phoenix Sky Harbor Intl

lun. 9/14

5:20 pm-12:36 am

1 stop5h 16m

$435
Cheapest one-way

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

mar. 5/26

5:30 am-6:55 am

Nonstop3h 25m

$119

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/23

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 March 13, 2026.

Booking 24 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, February is the cheapest month in which you can book a flight from St. Louis to Tempe (average of $105). 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 marzo 26, 2026.

One of the essential ways to save on airfare from St. Louis to Tempe is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 29% 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 March 23, 2026.

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. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from St. Louis to Tempe

Explore weekly flight availability from St. Louis to Tempe. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated marzo 26, 2026.

The most flights from STL to TM9 are scheduled on a Monday (10 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).

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 marzo 26, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited 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
4,333 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,333 reviews
Southwest
8.0
Very good
4,333 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,331 reviews
Southwest
8.0
Very good
4,333 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,484 reviews
Southwest
8.0
Very good
4,333 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,495 reviews
Southwest
8.0
Very good
4,333 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Frontier
5.7
Fair
3,015 reviews
Southwest
8.0
Very good
4,333 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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 8 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 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 Frontier ($67), Southwest ($143), and American Airlines ($144).

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

    Consider American Airlines (86%), Alaska Airlines (86%) or Southwest (82%) 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 $342, our data shows the cheapest flight currently is $128. When looking at the most popular route, (Lambert-St Louis - Phoenix Sky Harbor Intl), you can expect to pay $209 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, February is the cheapest month in which you can book a flight from St. Louis to Tempe (average of $105). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 marzo 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$94Average$212FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$121Average$200FlexibilityNo cancel feeOn-time65%
DeltaCheapest$141Average$336FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$148Average$386FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$209Average$375FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$218Average$388FlexibilityNo cancel feeOn-time63%

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