$56+ Cheap flights from St. Louis (STL) to Arizona
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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PHX
Feb 6 — Feb 131
1 adult, Economy
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Find cheap flights from St. Louis to Arizona 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.Cheap flight deals from St. Louis to Arizona
Keep the following information in mind while searching for St. Louis to Arizona flight deals. Data was last updated January 7, 2026.
Round-trip from | $113 (Kiwi.com) |
|---|---|
One-way from | $56 (Frontier) |
Popular in | March |
Cheapest in | November |
Average price | $359 |
Good round-trip deal | $290 or less |
Good one-way deal | $124 or less |
Find flight deals from St. Louis to Arizona
Cheapest flights from St. Louis to ArizonaExplore the most affordable flight options available from St. Louis to Arizona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 7, 2026.
Explore the most affordable flight options available from St. Louis to Arizona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 7, 2026.
This Kiwi.com deal was found by Cheapflights users on 1/6. 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.
Thu 2/510:01 pmSTL - LAS
Nonstop3h 48mFrontier
Thu 2/128:35 pmLAS - STL
1 stop14h 34mFrontier
Deal found 1/6![Frontier logo]()
$113
This Cheapflightsfares deal was found by Cheapflights users on 1/7. 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.
Sat 2/146:41 pmSTL - LAS
Nonstop3h 50mFrontier
Wed 2/186:30 amLAS - STL
1 stop7h 23mFrontier
Deal found 1/7![Frontier logo]()
$115
This Frontier deal was found by Cheapflights users on 1/7. 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.
Sat 2/286:41 pmSTL - LAS
Nonstop3h 50mFrontier
Mon 3/26:50 amLAS - STL
1 stop11h 02mFrontier
Deal found 1/7![Frontier logo]()
$116
This Cheapflightsfares deal was found by Cheapflights users on 1/7. 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.
Sat 1/313:46 pmSTL - LAS
1 stop10h 13mFrontier
Mon 2/23:34 pmLAS - STL
Nonstop3h 16mFrontier
Deal found 1/7![Frontier logo]()
$117
This Frontier deal was found by Cheapflights users on 1/6. 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 3/510:11 pmSTL - LAS
Nonstop3h 48mFrontier
Tue 3/101:51 pmLAS - STL
Nonstop3h 20mFrontier
Deal found 1/6![Frontier logo]()
$118
This WAYA deal was found by Cheapflights users on 1/5. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/261:40 pmSTL - LAS
1 stop5h 55mFrontier
Mon 2/23:34 pmLAS - STL
Nonstop3h 16mFrontier
Deal found 1/5![Frontier logo]()
$119
This CheapOair deal was found by Cheapflights users on 1/6. 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.
Sun 1/259:27 pmSTL - LAS
Nonstop3h 59mFrontier
Thu 1/295:12 pmLAS - STL
1 stop23h 32mFrontier
Deal found 1/6![Frontier logo]()
$125
This Frontier deal was found by Cheapflights users on 1/6. 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 2/2010:11 pmSTL - LAS
Nonstop3h 48mFrontier
Mon 2/2311:49 amLAS - STL
1 stop6h 13mFrontier
Deal found 1/6![Frontier logo]()
$126
This Cheapflightsfares deal was found by Cheapflights users on 1/6. 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.
Sat 2/73:46 pmSTL - LAS
1 stop10h 13mFrontier
Tue 2/1011:03 pmLAS - STL
1 stop21h 24mFrontier
Deal found 1/6![Frontier logo]()
$127
This Frontier deal was found by Cheapflights users on 1/6. 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.
Sat 2/73:46 pmSTL - LAS
1 stop10h 13mFrontier
Tue 2/1012:59 amLAS - STL
1 stop10h 59mFrontier
Deal found 1/6![Frontier logo]()
$128
This WAYA deal was found by Cheapflights users on 1/6. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/213:46 pmSTL - LAS
1 stop9h 11mFrontier
Fri 1/309:37 amLAS - STL
1 stop7h 07mFrontier
Deal found 1/6![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 1/7. 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 1/261:40 pmSTL - LAS
1 stop11h 59mFrontier
Fri 1/309:37 amLAS - STL
1 stop7h 07mFrontier
Deal found 1/7![Frontier logo]()
$130
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Arizona 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 January 7, 2026.
Use the filters below to find and compare flights from St. Louis to Arizona that are best for you.
Fly from
St. Louis
Fly to
Arizona
Route
Depart
Return
Price
St. LouisTucson
STL - TUS
STLTUS
Lambert-St Louis
Thu 2/19
10:11 pm-12:38 pm
1 stop15h 27m
Tucson
Sun 2/22
9:20 pm-8:02 pm
2 stops21h 42m
$216
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Thu 1/29
2:38 pm-6:40 pm
1 stop6h 02m
Las Vegas Harry Reid Intl
Mon 2/2
6:15 am-2:38 pm
1 stop6h 23m
$217
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Sat 4/25
2:40 pm-8:58 pm
1 stop8h 18m
Las Vegas Harry Reid Intl
Wed 4/29
9:07 am-4:56 pm
1 stop5h 49m
$226
St. LouisPhoenix
STL - PHX
STLPHX
Lambert-St Louis
Wed 3/25
9:55 am-11:30 am
Nonstop3h 35m
Phoenix Sky Harbor Intl
Tue 3/31
6:30 pm-11:20 pm
Nonstop2h 50m
$232
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Sun 2/22
7:00 am-10:56 pm
1 stop17h 56m
Las Vegas Harry Reid Intl
Fri 2/27
9:16 pm-1:51 pm
2 stops14h 35m
$233
St. LouisPhoenix
STL - PHX
STLPHX
Lambert-St Louis
Mon 2/23
7:00 am-10:56 am
1 stop28h 56m
Phoenix Sky Harbor Intl
Tue 3/3
7:00 am-1:51 pm
1 stop29h 51m
$234
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Fri 4/17
5:29 pm-11:27 pm
1 stop7h 58m
Las Vegas Harry Reid Intl
Sat 4/18
12:50 am-8:30 am
1 stop5h 40m
$235
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Mon 6/8
6:49 pm-11:19 pm
1 stop6h 30m
Las Vegas Harry Reid Intl
Wed 6/10
12:59 am-9:42 am
1 stop6h 43m
$235
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Thu 4/16
6:45 pm-11:36 pm
1 stop6h 51m
Las Vegas Harry Reid Intl
Sat 4/18
12:50 am-8:30 am
1 stop5h 40m
$235
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Mon 3/16
5:25 pm-11:31 pm
1 stop8h 06m
Las Vegas Harry Reid Intl
Wed 3/18
12:50 am-9:01 am
1 stop6h 11m
$235
Showing 1-10 of 60 results
Best time to book a flight from St. Louis to Arizona
Have a flexible travel schedule? Discover the best time to fly to Arizona 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 Arizona
What is the cheapest month to book a flight from St. Louis to Arizona?
Currently, October is the cheapest month in which you can book a flight from St. Louis to Arizona (average of $107). Flying from St. Louis to Arizona in June is currently the most expensive (average of $234). 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 AZ?
Find hourly flight availability from St. Louis to Arizona. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 7, 2026.
A simple way to save on the total cost of your ticket is to fly from St. Louis to Arizona in the evening. If you’re flexible enough to do this you can expect to save up to 16% on your trip compared to booking a flight in the morning.
What is the cheapest day to fly from St. Louis to Arizona?
Use this chart to determine the cheapest time to fly round-trip from St. Louis to Arizona. Price data was last updated on January 3, 2026.
Travelers seeking maximum savings on their St. Louis to Arizona flight should consider departing on Friday 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.
Weekly flight availability from St. Louis to Arizona
Explore weekly flight availability from St. Louis to Arizona. 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 January 7, 2026.
The most flights from STL to USAZ are scheduled on a Monday (8 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 Arizona?
Reviews of airlines servicing Arizona
Get insights into the airlines that provide service to Arizona. 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 Arizona. Reviews last updated January 7, 2026.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from St. Louis to Arizona by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Overall
8.0
Food
7.0
Crew
8.6
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Overall
8.0
Food
7.0
Crew
8.6
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Overall
8.0
Food
7.0
Crew
8.6
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Overall
8.0
Food
7.0
Crew
8.6
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Overall
8.0
Food
7.0
Crew
8.6
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Overall
8.0
Food
7.0
Crew
8.6
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Arizona. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for St. Louis to Arizona
See prices for flight routes from nearby airports that may be better suited for you.
Top 6 airlines flying from St. Louis to Arizona
Discover the top 6 airlines that operate flights from St. Louis to Arizona. 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 January 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$94 | Average$205 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$158 | Average$200 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$210 | Average$403 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$214 | Average$444 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$223 | Average$405 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$236 | Average$357 | FlexibilityNo cancel fee | On-timeN/A |