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$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 8/13. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PHX
jul. 8 — jul. 151
mar. 7/8
mar. 7/15
1 adult, Economy
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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 julio 3, 2025.

Round-trip from

$186
(Priceline)

One-way from

$56
(Priceline)

Popular in

March

Cheapest in

August

Average price

$284

Good round-trip deal

$382 or less

Good one-way deal

$198 or less
From Lambert-St Louis to Arizona
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One-way flight from Lambert-St Louis to Arizona
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Highest demand for flights based on searches. 14% potential increase in price ($61 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Lambert-St Louis to Arizona.
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Price to beat on a one-way flight from Lambert-St Louis to Arizona.
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Find flight deals from St. Louis to Arizona

Cheapest flights from St. Louis to Arizona
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 julio 3, 2025.

This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/257:52 pmSTL - LAS
1 stop5h 40mMultiple Airlines
jue. 10/3010:55 pmLAS - STL
1 stop6h 54mMultiple Airlines
Deal found 6/30$186
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/267:54 pmSTL - LAS
1 stop5h 40mFrontier
mié. 8/2712:59 amLAS - STL
1 stop6h 19mFrontier
Deal found 6/30$187
This Southwest deal was found by Cheapflights users on 7/2. 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.
mar. 8/128:45 pmSTL - LAS
Nonstop3h 25mSouthwest
jue. 8/148:05 amLAS - STL
Nonstop3h 15mSouthwest
Deal found 7/2$197
This Delta deal was found by Cheapflights users on 7/3. 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.
mar. 8/57:15 pmSTL - LAS
1 stop6h 10mDelta
mié. 8/612:40 amLAS - STL
1 stop5h 54mDelta
Deal found 7/3$207
This FlightHub deal was found by Cheapflights users on 7/3. 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.
vie. 8/222:30 pmSTL - LAS
1 stop9h 08mSpirit Airlines
dom. 8/2410:43 pmLAS - STL
1 stop12h 49mSpirit Airlines
Deal found 7/3$211
This FlightHub deal was found by Cheapflights users on 7/2. 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.
jue. 9/47:55 pmSTL - TUS
1 stop16h 52mFrontier
dom. 9/711:32 amTUS - STL
1 stop19h 34mFrontier
Deal found 7/2$222
This FlightHub deal was found by Cheapflights users on 7/2. 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.
sáb. 9/207:55 pmSTL - PHX
1 stop13h 37mFrontier
dom. 9/286:18 pmPHX - STL
1 stop12h 48mFrontier
Deal found 7/2$222
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.
jue. 8/282:30 pmSTL - PHX
1 stop9h 07mMultiple Airlines
lun. 9/19:19 pmPHX - STL
1 stop9h 52mMultiple Airlines
Deal found 7/1$224
This FlightHub deal was found by Cheapflights users on 7/2. 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.
vie. 7/2510:47 amSTL - PHX
1 stop13h 47mSpirit Airlines
dom. 7/2711:49 pmPHX - STL
1 stop8h 03mSpirit Airlines
Deal found 7/2$233
This American Airlines deal was found by Cheapflights users on 7/2. 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.
mar. 8/267:53 amSTL - PHX
Nonstop3h 15mAmerican Airlines
jue. 9/412:59 pmPHX - STL
Nonstop3h 01mAmerican Airlines
Deal found 7/2$257
This American Airlines deal was found by Cheapflights users on 7/2. 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.
mié. 7/307:23 amSTL - TUS
1 stop7h 52mAmerican Airlines
mié. 8/63:52 pmTUS - STL
1 stop5h 22mAmerican Airlines
Deal found 7/2$267
This Southwest deal was found by Cheapflights users on 7/2. 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.
mié. 9/106:15 amSTL - PHX
Nonstop3h 15mSouthwest
mié. 9/1710:05 amPHX - STL
1 stop5h 45mSouthwest
Deal found 7/2$267

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 julio 3, 2025.
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. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

sáb. 10/25

7:52 pm-11:32 pm

1 stop5h 40m

Las Vegas Harry Reid Intl

jue. 10/30

10:55 pm-7:49 am

1 stop6h 54m

$186

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

mar. 8/26

7:54 pm-11:34 pm

1 stop5h 40m

Las Vegas Harry Reid Intl

mié. 8/27

12:59 am-9:18 am

1 stop6h 19m

$187

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

mar. 8/12

8:45 pm-10:10 pm

Nonstop3h 25m

Las Vegas Harry Reid Intl

jue. 8/14

8:05 am-1:20 pm

Nonstop3h 15m

$197

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

mar. 8/5

6:30 am-10:09 am

1 stop5h 39m

Las Vegas Harry Reid Intl

jue. 8/7

5:20 pm-12:38 am

1 stop5h 18m

$207

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

vie. 8/22

2:30 pm-9:38 pm

1 stop9h 08m

Las Vegas Harry Reid Intl

dom. 8/24

10:43 pm-1:32 pm

1 stop12h 49m

$211

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

jue. 9/4

7:55 pm-10:47 am

1 stop16h 52m

Tucson

dom. 9/7

11:32 am-9:06 am

1 stop19h 34m

$222

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

sáb. 9/20

7:55 pm-7:32 am

1 stop13h 37m

Phoenix Sky Harbor Intl

dom. 9/28

6:18 pm-9:06 am

1 stop12h 48m

$222

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

jue. 8/28

2:30 pm-9:37 pm

1 stop9h 07m

Phoenix Sky Harbor Intl

lun. 9/1

9:19 pm-9:11 am

1 stop9h 52m

$224

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

vie. 7/25

10:47 am-10:34 pm

1 stop13h 47m

Phoenix Sky Harbor Intl

dom. 7/27

11:49 pm-9:52 am

1 stop8h 03m

$233

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

mar. 8/26

7:53 am-9:08 am

Nonstop3h 15m

Phoenix Sky Harbor Intl

jue. 9/4

12:59 pm-6:00 pm

Nonstop3h 01m

$257

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 36 results
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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, January is the cheapest month in which you can book a flight from St. Louis to Arizona (average of $258). Flying from St. Louis to Arizona 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 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 julio 3, 2025.

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

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 julio 3, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,266 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,982 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,545 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,861 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

  • What airport do you fly from for flights from St. Louis to Arizona?

    Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to Arizona. It is only a 12.7 mi journey to Lambert-St Louis (STL) from St. Louis’s city center.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $56. Users have also found prices from $62 and $94 on Spirit Airlines and Hawaiian Airlines, respectively.

  • What are the most popular routes from St. Louis to Arizona?

    While some choose either Lambert-St Louis - Phoenix Sky Harbor Intl or Lambert-St Louis - Tucson, Lambert-St Louis - Las Vegas Harry Reid Intl is the most popular route from St. Louis to Arizona.

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

    Consider SkyWest Airlines (84%), American Airlines (77%) or Alaska Airlines (77%) when booking your flight. These represent the most reliable airlines when flying from St. Louis to Arizona.

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

    The cheapest flight price from St. Louis to Arizona is $147. On average you can expect to pay $341. The most popular route, (Lambert-St Louis - Las Vegas Harry Reid Intl), can usually be booked for $167.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Arizona (average of $258). Flying from St. Louis to Arizona 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.

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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.
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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 julio 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$108Average$202FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$121Average$200FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$177Average$467FlexibilityNo cancel feeOn-time71%
DeltaCheapest$216Average$369FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$226Average$368FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$283Average$412FlexibilityNo cancel feeOn-time63%

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