HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$81+ 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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — STL
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Tempe to St. Louis with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Tempe to Lambert-St Louis are usually found in September or August, booked 87 days in advance, depart on a Tuesday or Friday 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 30, 2025.

Round-trip from

$237
(CheapOair)

One-way from

$81
(Southwest)

Popular in

January

Cheapest in

September

Average price

$373
From Tempe to Lambert-St Louis
Search Deals
One-way flight from Tempe to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($38 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

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 30, 2025.

This CheapOair deal was found by Cheapflights users on 7/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/186:00 amPHX - STL
1 stop5h 42mMultiple Airlines
Thu 8/212:30 pmSTL - PHX
1 stop9h 07mMultiple Airlines
Deal found 7/28$230
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 8/2110:42 pmPHX - STL
1 stop12h 50mSpirit Airlines
Mon 8/252:30 pmSTL - PHX
1 stop9h 07mSpirit Airlines
Deal found 7/29$237
This American Airlines deal was found by Cheapflights users on 7/30. 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 10/236:50 pmPHX - STL
Nonstop3h 07mAmerican Airlines
Sat 10/257:31 amSTL - PHX
Nonstop3h 34mAmerican Airlines
Deal found 7/30$246
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 8/289:55 amPHX - STL
1 stop5h 52mDelta
Mon 9/16:00 amSTL - PHX
1 stop6h 41mDelta
Deal found 7/29$251
This Justfly.com 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/108:00 amPHX - STL
Nonstop2h 59mFrontier
Tue 10/147:52 pmSTL - PHX
1 stop28h 03mFrontier
Deal found 7/27$259
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.
Mon 9/156:30 pmPHX - STL
Nonstop2h 55mSouthwest
Fri 9/196:00 pmSTL - PHX
Nonstop3h 15mSouthwest
Deal found 7/29$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 30, 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

Mon 8/18

6:00 am-1:42 pm

1 stop5h 42m

Lambert-St Louis

Thu 8/21

2:30 pm-9:37 pm

1 stop9h 07m

$230

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Thu 8/21

10:42 pm-1:32 pm

1 stop12h 50m

Lambert-St Louis

Mon 8/25

2:30 pm-9:37 pm

1 stop9h 07m

$237

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Thu 10/23

6:50 pm-11:57 pm

Nonstop3h 07m

Lambert-St Louis

Sat 10/25

7:31 am-9:05 am

Nonstop3h 34m

$246

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Thu 8/28

9:55 am-5:47 pm

1 stop5h 52m

Lambert-St Louis

Mon 9/1

6:00 am-10:41 am

1 stop6h 41m

$251

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Fri 10/10

8:00 am-12:59 pm

Nonstop2h 59m

Lambert-St Louis

Tue 10/14

7:52 pm-9:55 pm

1 stop28h 03m

$259

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Mon 9/15

6:30 pm-11:25 pm

Nonstop2h 55m

Lambert-St Louis

Fri 9/19

6:00 pm-7:15 pm

Nonstop3h 15m

$271

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Tue 10/21

5:10 am-10:00 am

Nonstop2h 50m

$81

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Mon 10/27

8:00 am-12:59 pm

Nonstop2h 59m

$93

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Thu 8/14

10:42 pm-1:32 pm

1 stop12h 50m

$95

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Thu 9/18

6:02 pm-11:27 am

1 stop15h 25m

$120

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 15 results
1
2

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 July 25, 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 30, 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.

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

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 30, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,241 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Overall

8.0

Crew

8.5

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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 4 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 Southwest. According to our data, you can fly for as low as $81. Users have also found prices from $93 and $95 on Frontier and Spirit Airlines, 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 (93%), Alaska Airlines (90%), American Airlines (89%).

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

    On average you can expect to pay $310 for a flight from Tempe to St. Louis. The cheapest flight overall is $123 while the most popular route, (Phoenix Sky Harbor Intl - Lambert-St Louis) is currently priced at $164.

  • 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 St. Louis?

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

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 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 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$116Average$220FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$207Average$397FlexibilityNo cancel feeOn-time71%
DeltaCheapest$236Average$336FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$263Average$395FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$299Average$415FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.