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$59+ Cheap flights from Tempe, AZ to St. Louis (STL)

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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — STL
Jul 6 — Jul 131
Sun 7/6
Sun 7/13
1 adult, Economy
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Cheapflights Tip: The best prices from Tempe to Lambert-St Louis are usually found in August or September, booked 87 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from Tempe to St. Louis

Keep the following information in mind while searching for Tempe to St. Louis flight deals. Data was last updated July 1, 2025.

Round-trip from

$240
(CheapOair)

One-way from

$59
(Priceline)

Popular in

January

Cheapest in

August

Average price

$319
From Tempe to Lambert-St Louis
Search Deals
One-way flight from Tempe to Lambert-St Louis
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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. 1% potential price decrease ($7 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 Tempe to St. Louis

Cheapest flights from Tempe to St. Louis
Explore the most affordable flight options available from Tempe to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.

This CheapOair deal was found by Cheapflights users on 7/1. 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.
Tue 8/127:18 amPHX - STL
1 stop23h 53mMultiple Airlines
Fri 8/152:30 pmSTL - PHX
1 stop9h 07mMultiple Airlines
Deal found 7/1$240
This Cheapflightsfares deal was found by Cheapflights users on 6/30. 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.
Thu 7/3111:49 pmPHX - STL
1 stop8h 03mSpirit Airlines
Sun 8/310:47 amSTL - PHX
1 stop13h 47mSpirit Airlines
Deal found 6/30$243
This FlightHub deal was found by Cheapflights users on 7/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2712:11 pmPHX - STL
1 stop19h 00mFrontier
Sat 8/307:54 pmSTL - PHX
1 stop15h 36mFrontier
Deal found 7/1$248
This Southwest deal was found by Cheapflights users on 7/1. 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.
Thu 8/76:30 pmPHX - STL
Nonstop2h 55mSouthwest
Mon 8/119:40 pmSTL - PHX
Nonstop3h 15mSouthwest
Deal found 7/1$257
This American Airlines deal was found by Cheapflights users on 6/30. 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.
Thu 8/712:37 pmPHX - STL
1 stop9h 14mAmerican Airlines
Mon 8/117:53 amSTL - PHX
Nonstop3h 15mAmerican Airlines
Deal found 6/30$271

Cheapflights Fare Finder

Customize your flight search to find flights from Tempe to St. Louis 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 1, 2025.
Use the filters below to find and compare flights from Tempe to St. Louis that are best for you.

Fly from

Tempe

Fly to

St. Louis

Route

Depart

Return

Price

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Tue 8/12

7:18 am-9:11 am

1 stop23h 53m

Lambert-St Louis

Fri 8/15

2:30 pm-9:37 pm

1 stop9h 07m

$240

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Thu 7/31

11:49 pm-9:52 am

1 stop8h 03m

Lambert-St Louis

Sun 8/3

10:47 am-10:34 pm

1 stop13h 47m

$243

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Wed 8/27

12:11 pm-9:11 am

1 stop19h 00m

Lambert-St Louis

Sat 8/30

7:54 pm-9:30 am

1 stop15h 36m

$248

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Thu 8/7

6:30 pm-11:25 pm

Nonstop2h 55m

Lambert-St Louis

Mon 8/11

9:40 pm-10:55 pm

Nonstop3h 15m

$257

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Thu 8/7

12:37 pm-11:51 pm

1 stop9h 14m

Lambert-St Louis

Mon 8/11

7:53 am-9:08 am

Nonstop3h 15m

$271

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Thu 9/4

6:00 am-1:53 pm

1 stop5h 53m

$59

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Thu 7/24

11:49 pm-9:52 am

1 stop8h 03m

$60

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Mon 8/11

3:00 pm-10:35 pm

1 stop5h 35m

$138

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Tue 9/9

6:05 am-3:44 pm

2 stops7h 39m

$144

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Sat 8/2

7:23 pm-12:28 am

Nonstop3h 05m

$149

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Showing 1-10 of 12 results
1
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Best time to book a flight from Tempe to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Tempe 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 Tempe to St. Louis

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

Use this chart to determine the optimal time to book a round-trip flight from Tempe to St. Louis. Price data was last updated on June 27, 2025.

The best time to book flights from Tempe to St. Louis is 87 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, August is the cheapest month in which you can book a flight from Tempe to St. Louis (average of $311). Flying from Tempe to St. Louis in March is currently the most expensive (average of $356). 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 TM9 to STL?

Find hourly flight availability from Tempe to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 1, 2025.

When flying from Tempe to St. Louis, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

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

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

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated July 1, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Tempe to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,273 reviews

Boarding

8.2

Entertainment

7.6

Food

7.0

Crew

8.6

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,273 reviews
Southwest
8.0
Very good
4,273 reviews

Boarding

8.2

Entertainment

7.6

Food

7.0

Crew

8.6

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Delta
8.0
Very good
7,973 reviews
Southwest
8.0
Very good
4,273 reviews

Boarding

8.2

Entertainment

7.6

Food

7.0

Crew

8.6

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
United Airlines
7.4
Good
8,858 reviews
Southwest
8.0
Very good
4,273 reviews

Boarding

8.2

Entertainment

7.6

Food

7.0

Crew

8.6

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,273 reviews

Boarding

8.2

Entertainment

7.6

Food

7.0

Crew

8.6

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Spirit Airlines
6.3
Okay
8,101 reviews
Southwest
8.0
Very good
4,273 reviews

Boarding

8.2

Entertainment

7.6

Food

7.0

Crew

8.6

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Related info for your journey

Find useful and relevant information for your journey from Tempe to St. Louis. 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 into for flights to St. Louis from Tempe?

    Lambert-St Louis (STL) is the airport you will fly into if you book a flight from Tempe to St. Louis. You should not have trouble finding flights to Lambert-St Louis from Tempe; the airport handles an average of 3 inbound flights from Tempe per day. You should also have plenty of airline options to choose from since 5 airlines have flights to the St. Louis airport from Tempe. It is only a 12.7 mi journey from Lambert-St Louis (STL) to St. Louis’s city center.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $59. Users have also found prices from $60 and $138 on Spirit Airlines and Southwest, respectively.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Tempe to St. Louis on time: SkyWest Airlines (97%), Alaska Airlines (91%), American Airlines (90%).

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

    On average you can expect to pay $318 for a flight from Tempe to St. Louis. The cheapest flight overall is $159 while the most popular route, (Phoenix Sky Harbor Intl - Lambert-St Louis) is currently priced at $165.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Tempe to St. Louis 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 Tempe to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Tempe to St. Louis (average of $311). Flying from Tempe to St. Louis in March is currently the most expensive (average of $356). 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

Traveling to a place near Tempe?

Book flights to Tempe if you plan to visit one of these locations
O'Fallon
Maryland Heights
Fairview Heights
Collinsville
Eureka
St. Peters
Glencoe
Alton
Festus
Chesterfield
Farmington

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Top 5 airlines flying from Tempe to St. Louis

Discover the top 5 airlines that operate flights from Tempe to St. Louis. 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 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$109Average$218FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$183Average$381FlexibilityNo cancel feeOn-time71%
DeltaCheapest$216Average$306FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$263Average$378FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$301Average$416FlexibilityNo cancel feeOn-time63%

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