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$55+ 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 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PHX
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Round-trip from

$147
(Cheapflightsfares)

One-way from

$55
(Cheapflightsfares)

Popular in

March

Cheapest in

July

Average price

$290

Good round-trip deal

$359 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. 19% potential increase in price ($83 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 1, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 4/30. 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.
Mon 5/129:55 pmSTL - LAS
Nonstop3h 46mFrontier
Fri 5/163:39 pmLAS - STL
Nonstop3h 26mFrontier
Deal found 4/30$147
This Cheapflightsfares deal was found by Cheapflights users on 4/30. 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.
Sat 5/3110:10 amSTL - LAS
1 stop14h 44mSpirit Airlines
Sat 6/79:24 pmLAS - STL
1 stop9h 51mSpirit Airlines
Deal found 4/30$190
This CheapOair deal was found by Cheapflights users on 4/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/218:15 pmSTL - LAS
1 stop5h 44mMultiple Airlines
Fri 5/305:00 pmLAS - STL
1 stop14h 15mMultiple Airlines
Deal found 4/30$199
This Booking.com deal was found by Cheapflights users on 4/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/218:15 pmSTL - TUS
1 stop16h 28mFrontier
Thu 5/2212:52 pmTUS - STL
1 stop22h 48mFrontier
Deal found 4/29$260
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/207:00 amSTL - TUS
1 stop7h 39mAmerican Airlines
Sun 5/2511:23 amTUS - STL
1 stop6h 06mAmerican Airlines
Deal found 4/29$267
This United Airlines deal was found by Cheapflights users on 4/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/126:15 amSTL - TUS
1 stop6h 13mUnited Airlines
Wed 11/192:30 pmTUS - STL
1 stop5h 29mUnited Airlines
Deal found 4/28$285
This Southwest deal was found by Cheapflights users on 4/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/18:50 pmSTL - PHX
Nonstop3h 10mSouthwest
Tue 7/812:15 pmPHX - STL
1 stop4h 10mSouthwest
Deal found 4/30$297
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/148:05 pmSTL - PHX
1 stop5h 54mAmerican Airlines
Sat 6/216:57 pmPHX - STL
Nonstop3h 02mAmerican Airlines
Deal found 4/29$301
This CheapOair deal was found by Cheapflights users on 4/29. 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.
Fri 5/29:55 pmSTL - PHX
1 stop16h 44mFrontier
Sat 5/33:11 pmPHX - STL
1 stop30h 55mFrontier
Deal found 4/29$310
This Delta deal was found by Cheapflights users on 4/29. 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.
Wed 5/216:00 amSTL - PHX
1 stop8h 46mDelta
Sat 5/2412:45 amPHX - STL
1 stop8h 07mDelta
Deal found 4/29$311
This Delta deal was found by Cheapflights users on 4/29. 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.
Sun 5/256:00 amSTL - TUS
1 stop8h 00mDelta
Sun 6/14:55 pmTUS - STL
1 stop6h 04mDelta
Deal found 4/29$313
This Mytrip deal was found by Cheapflights users on 4/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/510:10 amSTL - PHX
2 stops29h 37mMultiple Airlines
Thu 6/1212:54 pmPHX - STL
2 stops19h 39mMultiple Airlines
Deal found 4/29$315

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 May 1, 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

Mon 5/12

9:55 pm-11:41 pm

Nonstop3h 46m

Las Vegas Harry Reid Intl

Fri 5/16

3:39 pm-9:05 pm

Nonstop3h 26m

$147

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sat 5/31

10:10 am-10:54 pm

1 stop14h 44m

Las Vegas Harry Reid Intl

Sat 6/7

9:24 pm-9:15 am

1 stop9h 51m

$190

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 5/21

8:15 pm-11:59 pm

1 stop5h 44m

Las Vegas Harry Reid Intl

Fri 5/30

5:00 pm-9:15 am

1 stop14h 15m

$199

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 5/21

8:15 pm-10:43 am

1 stop16h 28m

Tucson

Thu 5/22

12:52 pm-1:40 pm

1 stop22h 48m

$260

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 5/20

7:00 am-12:39 pm

1 stop7h 39m

Tucson

Sun 5/25

11:23 am-7:29 pm

1 stop6h 06m

$267

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Tue 7/1

8:50 pm-10:00 pm

Nonstop3h 10m

Phoenix Sky Harbor Intl

Tue 7/8

12:15 pm-6:25 pm

1 stop4h 10m

$297

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Sat 6/14

8:05 pm-11:59 pm

1 stop5h 54m

Phoenix Sky Harbor Intl

Sat 6/21

6:57 pm-11:59 pm

Nonstop3h 02m

$301

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Wed 5/21

6:00 am-12:46 pm

1 stop8h 46m

Phoenix Sky Harbor Intl

Sat 5/24

12:45 am-10:52 am

1 stop8h 07m

$311

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sun 5/25

6:00 am-12:00 pm

1 stop8h 00m

Tucson

Sun 6/1

4:55 pm-12:59 am

1 stop6h 04m

$313

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Thu 6/5

10:10 am-1:47 pm

2 stops29h 37m

Phoenix Sky Harbor Intl

Thu 6/12

12:54 pm-10:33 am

2 stops19h 39m

$315

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 43 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 May 1, 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.

Rainfall in Arizona by month

Plan your trip to Arizona by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Arizona ranges from 0.0 - 1.1 inches per month. July is typically the wettest month, when rainfall can reach 1.1 in. June is typically the driest time to visit Arizona when rainfall is around 0.0 in.

Temperature in Arizona by month

Plan your trip to Arizona by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Arizona, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 95.0 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 55.4 F).

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 May 1, 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
9,972 reviews

Food

7.1

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

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
9,972 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Food

7.1

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

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
4,294 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Food

7.1

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

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
7,934 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Food

7.1

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,409 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Food

7.1

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

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
8,696 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Food

7.1

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

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 $55. Users have also found prices from $94 and $118 on Spirit Airlines and Sun Country Air, 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 (88%), Southwest (82%) or American Airlines (71%) 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 $153. On average you can expect to pay $611. 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.

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 5 airlines flying from St. Louis to Arizona

Discover the top 5 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$78Average$151FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$131Average$489FlexibilityNo cancel feeOn-time71%
DeltaCheapest$215Average$350FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$218Average$371FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$297Average$417FlexibilityNo cancel feeOn-time63%

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