Arizona

$38+ 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 2/19. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PHX
Feb 11 — Feb 181
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Cheap flight deals from St. Louis to Arizona

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Arizona (USAZ). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 6, 2025.

Round-trip from

$136
(Cheapflightsfares)

One-way from

$38
(Cheapflightsfares)

Popular in

March

Cheapest in

May

Average price

$404

Good round-trip deal

$384 or less

Good one-way deal

$193 or less
From Lambert-St Louis to Arizona
One-way flight from Lambert-St Louis to Arizona
Highest demand for flights based on searches. 18% potential increase in price ($75 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
Average for round-trip flights in February 2025
Price to beat on a round-trip flight from Lambert-St Louis to Arizona.
Price to beat on a one-way flight from Lambert-St Louis to Arizona.

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 February 6, 2025.

This Frontier deal was found by Cheapflights users on 2/6. 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.
Wed 3/56:43 pmSTL - LAS
Nonstop3h 41mFrontier
Mon 3/1712:37 pmLAS - STL
Nonstop3h 23mFrontier
Deal found 2/6$133
This CheapOair deal was found by Cheapflights users on 2/6. 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.
Tue 3/46:26 pmSTL - LAS
Nonstop3h 41mMultiple Airlines
Wed 3/1210:30 pmLAS - STL
1 stop16h 12mMultiple Airlines
Deal found 2/6$158
This Mytrip deal was found by Cheapflights users on 2/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/95:38 pmSTL - LAS
2 stops30h 51mSpirit Airlines
Wed 3/1210:30 pmLAS - STL
1 stop16h 12mSpirit Airlines
Deal found 2/5$232
This United Airlines deal was found by Cheapflights users on 2/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/271:39 pmSTL - LAS
1 stop7h 13mUnited Airlines
Sat 3/112:59 amLAS - STL
1 stop6h 52mUnited Airlines
Deal found 2/6$272
This Delta deal was found by Cheapflights users on 2/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/26:59 pmSTL - LAS
1 stop6h 37mDelta
Wed 3/512:55 amLAS - STL
1 stop8h 04mDelta
Deal found 2/5$277
This Trip.com deal was found by Cheapflights users on 2/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/77:09 pmSTL - PHX
1 stop6h 50mFrontier
Sun 3/911:21 pmPHX - STL
1 stop8h 15mFrontier
Deal found 2/6$297
This Expedia deal was found by Cheapflights users on 2/4. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/2711:08 pmSTL - PHX
1 stop9h 39mMultiple Airlines
Fri 3/79:00 amPHX - STL
2 stops13h 59mMultiple Airlines
Deal found 2/4$307
This Mytrip deal was found by Cheapflights users on 2/4. 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 2/274:00 pmSTL - PHX
3 stops27h 29mSpirit Airlines
Fri 3/73:38 pmPHX - STL
2 stops16h 31mSpirit Airlines
Deal found 2/4$309
This American Airlines deal was found by Cheapflights users on 2/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/277:04 amSTL - TUS
1 stop7h 46mAmerican Airlines
Thu 3/61:39 pmTUS - STL
1 stop7h 35mAmerican Airlines
Deal found 2/5$317
This Delta deal was found by Cheapflights users on 2/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/85:00 pmSTL - PHX
1 stop7h 54mDelta
Sat 3/156:00 amPHX - STL
1 stop5h 23mDelta
Deal found 2/6$323
This United Airlines deal was found by Cheapflights users on 2/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/2510:55 amSTL - PHX
1 stop6h 49mUnited Airlines
Sat 3/296:05 amPHX - STL
1 stop7h 24mUnited Airlines
Deal found 2/6$327
This United Airlines deal was found by Cheapflights users on 2/5. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/236:15 amSTL - TUS
1 stop6h 44mUnited Airlines
Wed 5/76:00 amTUS - STL
2 stops7h 47mUnited Airlines
Deal found 2/5$344

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 February 6, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 3/5

6:43 pm-8:24 pm

Nonstop3h 41m

Las Vegas Harry Reid Intl

Mon 3/17

12:37 pm-6:00 pm

Nonstop3h 23m

$133

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Tue 3/4

6:26 pm-8:07 pm

Nonstop3h 41m

Las Vegas Harry Reid Intl

Wed 3/12

10:30 pm-4:42 pm

1 stop16h 12m

$158

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Tue 3/4

4:00 pm-4:32 pm

2 stops26h 32m

Las Vegas Harry Reid Intl

Wed 3/5

1:10 am-4:42 pm

3 stops13h 32m

$224

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Thu 2/27

1:39 pm-6:52 pm

1 stop7h 13m

Las Vegas Harry Reid Intl

Sat 3/1

12:59 am-9:51 am

1 stop6h 52m

$272

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sun 3/2

6:59 pm-11:36 pm

1 stop6h 37m

Las Vegas Harry Reid Intl

Wed 3/5

12:55 am-10:59 am

1 stop8h 04m

$277

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Fri 3/7

7:09 pm-12:59 am

1 stop6h 50m

Phoenix Sky Harbor Intl

Sun 3/9

11:21 pm-9:36 am

1 stop8h 15m

$298

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Thu 2/27

11:08 pm-7:47 am

1 stop9h 39m

Phoenix Sky Harbor Intl

Fri 3/7

9:00 am-11:59 pm

2 stops13h 59m

$307

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Thu 2/27

4:00 pm-6:29 pm

3 stops27h 29m

Phoenix Sky Harbor Intl

Fri 3/7

3:38 pm-9:09 am

2 stops16h 31m

$309

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Thu 2/27

7:04 am-1:50 pm

1 stop7h 46m

Tucson

Thu 3/6

1:39 pm-10:14 pm

1 stop7h 35m

$317

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Sat 3/8

5:00 pm-11:54 pm

1 stop7h 54m

Phoenix Sky Harbor Intl

Sat 3/15

6:00 am-1:23 pm

1 stop5h 23m

$323

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/5

Showing 1-10 of 42 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 February 6, 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 February 6, 2025.

The most flights from STL to USAZ are scheduled on a Tuesday (12 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 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 February 6, 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.

Boarding

8.2

Entertainment

7.7

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.