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$59+ 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 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PHX
ago. 12 — ago. 191
mar. 8/12
mar. 8/19
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 agosto 7, 2025.

Round-trip from

$192
(FlightHub)

One-way from

$59
(Frontier)

Popular in

March

Cheapest in

September

Average price

$307

Good round-trip deal

$297 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. 11% potential increase in price ($46 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in August 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 agosto 7, 2025.

This Justfly.com deal was found by Cheapflights users on 8/7. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/182:37 pmSTL - LAS
Nonstop3h 36mFrontier
vie. 8/228:11 pmLAS - STL
1 stop11h 00mFrontier
Deal found 8/7$192
This FlightHub deal was found by Cheapflights users on 8/7. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 8/172:27 pmSTL - LAS
Nonstop3h 36mFrontier
mié. 8/2012:50 pmLAS - STL
1 stop18h 28mFrontier
Deal found 8/7$193
This Cheapflightsfares deal was found by Cheapflights users on 8/6. 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.
lun. 9/12:34 pmSTL - LAS
Nonstop3h 36mFrontier
jue. 9/48:34 amLAS - STL
Nonstop3h 19mFrontier
Deal found 8/6$194
This FlightHub deal was found by Cheapflights users on 8/7. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/107:55 pmSTL - LAS
1 stop5h 38mFrontier
vie. 9/1212:59 amLAS - STL
1 stop6h 07mFrontier
Deal found 8/7$195
This FlightHub deal was found by Cheapflights users on 8/7. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 8/172:27 pmSTL - LAS
Nonstop3h 36mFrontier
vie. 8/229:04 amLAS - STL
1 stop22h 07mFrontier
Deal found 8/7$196
This Justfly.com deal was found by Cheapflights users on 8/7. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/129:35 pmSTL - LAS
Nonstop3h 36mFrontier
dom. 9/1412:59 amLAS - STL
1 stop6h 07mFrontier
Deal found 8/7$197
This Mytrip deal was found by Cheapflights users on 8/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/207:54 pmSTL - LAS
1 stop5h 40mFrontier
mar. 8/2612:59 amLAS - STL
1 stop6h 12mFrontier
Deal found 8/7$198
This Cheapflightsfares deal was found by Cheapflights users on 8/6. 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.
jue. 8/142:27 pmSTL - LAS
Nonstop3h 36mFrontier
lun. 8/188:20 amLAS - STL
Nonstop3h 22mFrontier
Deal found 8/6$199
This FlightHub deal was found by Cheapflights users on 8/6. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/77:52 pmSTL - LAS
1 stop21h 54mFrontier
dom. 11/98:09 amLAS - STL
Nonstop3h 25mFrontier
Deal found 8/6$200
This FlightHub deal was found by Cheapflights users on 8/7. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/237:54 pmSTL - LAS
1 stop5h 40mFrontier
mar. 8/267:24 amLAS - STL
1 stop23h 47mFrontier
Deal found 8/7$201
This FlightHub deal was found by Cheapflights users on 8/7. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/207:54 pmSTL - LAS
1 stop5h 40mMultiple Airlines
jue. 8/2110:43 pmLAS - STL
1 stop12h 49mMultiple Airlines
Deal found 8/7$202
This Cheapflightsfares deal was found by Cheapflights users on 8/7. 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.
jue. 9/42:38 pmSTL - LAS
Nonstop3h 38mFrontier
mié. 9/1012:59 amLAS - STL
1 stop6h 07mFrontier
Deal found 8/7$203

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 agosto 7, 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

lun. 9/1

2:34 pm-4:10 pm

Nonstop3h 36m

Las Vegas Harry Reid Intl

jue. 9/4

8:34 am-1:53 pm

Nonstop3h 19m

$194

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

lun. 8/18

2:37 pm-4:13 pm

Nonstop3h 36m

Las Vegas Harry Reid Intl

vie. 8/22

8:11 pm-9:11 am

1 stop11h 00m

$195

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

dom. 10/19

2:47 pm-4:27 pm

Nonstop3h 40m

Las Vegas Harry Reid Intl

mié. 10/22

8:49 pm-9:22 am

1 stop10h 33m

$196

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

mié. 8/27

7:54 pm-11:34 pm

1 stop5h 40m

Las Vegas Harry Reid Intl

vie. 8/29

12:59 am-9:11 am

1 stop6h 12m

$197

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

lun. 8/18

2:37 pm-4:13 pm

Nonstop3h 36m

Las Vegas Harry Reid Intl

lun. 8/18

12:59 am-9:11 am

1 stop6h 12m

$198

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

jue. 8/14

2:27 pm-4:03 pm

Nonstop3h 36m

Las Vegas Harry Reid Intl

lun. 8/18

8:20 am-1:42 pm

Nonstop3h 22m

$199

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

lun. 8/11

7:29 pm-11:02 am

1 stop17h 33m

Las Vegas Harry Reid Intl

jue. 8/14

8:20 am-1:42 pm

Nonstop3h 22m

$200

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

jue. 8/21

2:34 pm-4:10 pm

Nonstop3h 36m

Las Vegas Harry Reid Intl

dom. 8/24

12:59 am-9:11 am

1 stop6h 12m

$201

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

lun. 9/1

2:34 pm-4:10 pm

Nonstop3h 36m

Las Vegas Harry Reid Intl

sáb. 9/6

10:35 am-4:03 pm

Nonstop3h 28m

$202

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

dom. 9/21

2:38 pm-4:16 pm

Nonstop3h 38m

Las Vegas Harry Reid Intl

jue. 9/25

8:34 am-1:53 pm

Nonstop3h 19m

$204

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/6

Showing 1-10 of 60 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 agosto 7, 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.

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 agosto 7, 2025.

The most flights from STL to USAZ are scheduled on a Thursday (9 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 agosto 7, 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

Overall

8.0

Food

7.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Food

7.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
Southwest
8.0
Very good
4,247 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Food

7.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
Delta
8.0
Very good
7,987 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Food

7.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
Hawaiian Airlines
7.8
Good
2,631 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Food

7.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
United Airlines
7.4
Good
8,916 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Food

7.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)

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 $59. Users have also found prices from $73 and $74 on Southwest and American 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 Southwest (60%), SkyWest Airlines (56%) or American Airlines (46%) 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 $92. On average you can expect to pay $293. The most popular route, (Lambert-St Louis - Las Vegas Harry Reid Intl), can usually be booked for $202.

  • 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.

See more FAQs

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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 agosto 7, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$108Average$210FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$154Average$200FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$222Average$470FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$223Average$391FlexibilityNo cancel feeOn-time69%
DeltaCheapest$245Average$377FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$274Average$409FlexibilityNo cancel feeOn-time63%

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