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$49+ 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 4/25. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PHX
feb. 25 — mar. 41
mar. 2/25
mar. 3/4
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 febrero 20, 2025.

Round-trip from

$125
(Cheapflightsfares)

One-way from

$49
(Frontier)

Popular in

March

Cheapest in

May

Average price

$405

Good round-trip deal

$396 or less

Good one-way deal

$193 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. 18% potential increase in price ($73 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Price to beat on a round-trip flight from Lambert-St Louis to Arizona.
Search Deals
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 febrero 20, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 2/20. 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.
dom. 3/211:08 pmSTL - LAS
Nonstop3h 49mFrontier
vie. 3/712:37 pmLAS - STL
Nonstop3h 23mFrontier
Deal found 2/20$125
This FlightHub deal was found by Cheapflights users on 2/20. 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.
mar. 4/156:11 pmSTL - LAS
1 stop8h 48mMultiple Airlines
sáb. 4/1912:22 pmLAS - STL
Nonstop3h 21mMultiple Airlines
Deal found 2/20$175
This Mytrip deal was found by Cheapflights users on 2/20. 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.
jue. 4/106:11 pmSTL - LAS
1 stop8h 48mSpirit Airlines
lun. 4/1410:15 pmLAS - STL
1 stop17h 01mSpirit Airlines
Deal found 2/20$216
This Gotogate deal was found by Cheapflights users on 2/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/65:24 pmSTL - PHX
1 stop30h 52mFrontier
jue. 3/137:00 pmPHX - STL
1 stop12h 16mFrontier
Deal found 2/20$218
This Orbitz deal was found by Cheapflights users on 2/19. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 4/126:51 pmSTL - PHX
1 stop7h 06mMultiple Airlines
mié. 4/239:00 amPHX - STL
2 stops12h 59mMultiple Airlines
Deal found 2/19$267
This Delta deal was found by Cheapflights users on 2/20. 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.
lun. 4/142:23 pmSTL - LAS
1 stop5h 39mDelta
vie. 4/186:00 amLAS - STL
1 stop5h 28mDelta
Deal found 2/20$291
This Mytrip deal was found by Cheapflights users on 2/18. 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.
dom. 3/95:38 pmSTL - PHX
2 stops26h 29mSpirit Airlines
mié. 3/122:12 pmPHX - STL
2 stops24h 30mSpirit Airlines
Deal found 2/18$299
This Alaska Airlines deal was found by Cheapflights users on 2/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/313:11 pmSTL - LAS
1 stop8h 29mAlaska Airlines
vie. 4/46:00 amLAS - STL
1 stop15h 59mAlaska Airlines
Deal found 2/20$316
This Delta deal was found by Cheapflights users on 2/18. 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. 3/116:00 amSTL - TUS
1 stop7h 25mDelta
mar. 3/183:14 pmTUS - STL
1 stop6h 17mDelta
Deal found 2/18$317
This United Airlines deal was found by Cheapflights users on 2/20. 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.
jue. 3/136:15 amSTL - TUS
1 stop6h 25mUnited Airlines
jue. 3/276:30 amTUS - STL
1 stop6h 46mUnited Airlines
Deal found 2/20$318
This Southwest deal was found by Cheapflights users on 2/20. 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. 3/122:20 pmSTL - TUS
1 stop6h 20mSouthwest
mié. 3/266:40 amTUS - STL
2 stops8h 40mSouthwest
Deal found 2/20$322
This Delta deal was found by Cheapflights users on 2/19. 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. 5/63:12 pmSTL - PHX
1 stop7h 02mDelta
vie. 5/912:59 amPHX - STL
1 stop7h 24mDelta
Deal found 2/19$323

Find flights from St. Louis to Arizona within your budget

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 febrero 20, 2025.

Fly from

St. Louis

Fly to

Arizona

Route

Depart

Return

Price

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

dom. 3/2

11:08 pm-12:57 am

Nonstop3h 49m

Las Vegas Harry Reid Intl

vie. 3/7

12:37 pm-6:00 pm

Nonstop3h 23m

$125

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

mar. 4/15

6:11 pm-12:59 am

1 stop8h 48m

Las Vegas Harry Reid Intl

sáb. 4/19

12:22 pm-5:43 pm

Nonstop3h 21m

$175

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

jue. 4/10

6:11 pm-12:59 am

1 stop8h 48m

Las Vegas Harry Reid Intl

lun. 4/14

10:15 pm-5:16 pm

1 stop17h 01m

$216

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

jue. 3/6

5:24 pm-11:16 pm

1 stop30h 52m

Phoenix Sky Harbor Intl

jue. 3/13

7:00 pm-9:16 am

1 stop12h 16m

$218

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

sáb. 4/12

6:51 pm-11:57 pm

1 stop7h 06m

Phoenix Sky Harbor Intl

mié. 4/23

9:00 am-11:59 pm

2 stops12h 59m

$267

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

lun. 4/14

2:23 pm-6:02 pm

1 stop5h 39m

Las Vegas Harry Reid Intl

vie. 4/18

6:00 am-1:28 pm

1 stop5h 28m

$291

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

dom. 3/9

5:38 pm-6:07 pm

2 stops26h 29m

Phoenix Sky Harbor Intl

mié. 3/12

2:12 pm-4:42 pm

2 stops24h 30m

$299

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

lun. 3/31

3:11 pm-9:40 pm

1 stop8h 29m

Las Vegas Harry Reid Intl

vie. 4/4

6:00 am-11:59 pm

1 stop15h 59m

$316

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

mar. 3/11

6:00 am-11:25 am

1 stop7h 25m

Tucson

mar. 3/18

3:14 pm-11:31 pm

1 stop6h 17m

$317

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

jue. 3/13

6:15 am-10:40 am

1 stop6h 25m

Tucson

mié. 3/26

7:00 am-4:34 pm

1 stop7h 34m

$318

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 48 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.

Travel insights for flights from St. Louis to Arizona

Get recent, data-driven insights about flights from St. Louis to Arizona including ideal travel times, pricing trends, and more.

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 febrero 20, 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 febrero 20, 2025.

The most flights from STL to USAZ are scheduled on a Monday (11 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).

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 febrero 20, 2025.
Get a feel of what it's like to fly with Southwest, Alaska Airlines 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.
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,697 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,219 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Hawaiian Airlines
7.9
Good
2,317 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,765 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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 $49. Users have also found prices from $96 and $146 on Spirit Airlines and Delta, 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 (100%), American Airlines (89%) or Alaska Airlines (87%) 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 $138. On average you can expect to pay $355. The most popular route, (Lambert-St Louis - Las Vegas Harry Reid Intl), can usually be booked for $153.

  • 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 febrero 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$78Average$147FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$134Average$496FlexibilityNo cancel feeOn-time71%
DeltaCheapest$215Average$367FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$226Average$430FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$284Average$417FlexibilityNo cancel feeOn-time63%
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