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$64+ Cheap flights from Arizona to St. Louis (STL)

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 7/13. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — STL
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
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Cheap flight deals from Arizona to St. Louis

Keep the following information in mind while searching for Arizona to St. Louis flight deals. Data was last updated junio 12, 2025.

Round-trip from

$169
(FlightHub)

One-way from

$64
(Priceline)

Popular in

January

Cheapest in

August

Average price

$329

Good round-trip deal

$346 or less

Good one-way deal

$179 or less
From Arizona to Lambert-St Louis
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One-way flight from Arizona to Lambert-St Louis
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Highest demand for flights based on searches. 12% potential increase in price ($54 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Arizona to Lambert-St Louis.
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Price to beat on a one-way flight from Arizona to Lambert-St Louis.
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Find flight deals from Arizona to St. Louis

Cheapest flights from Arizona to St. Louis
Explore the most affordable flight options available from Arizona to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.

This FlightHub deal was found by Cheapflights users on 6/12. 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. 10/15:28 pmLAS - STL
1 stop12h 21mSpirit Airlines
dom. 10/58:44 amSTL - LAS
1 stop13h 22mSpirit Airlines
Deal found 6/12$169
This FlightHub deal was found by Cheapflights users on 6/12. 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. 7/912:20 amLAS - STL
1 stop7h 32mMultiple Airlines
dom. 7/132:27 pmSTL - LAS
Nonstop3h 36mMultiple Airlines
Deal found 6/12$201
This Cheapflightsfares deal was found by Cheapflights users on 6/12. 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. 9/88:09 amLAS - STL
Nonstop3h 25mFrontier
lun. 9/159:25 pmSTL - LAS
Nonstop3h 38mFrontier
Deal found 6/12$202
This Expedia deal was found by Cheapflights users on 6/10. 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.
jue. 7/2411:49 pmPHX - STL
1 stop8h 03mSpirit Airlines
lun. 7/2810:47 amSTL - PHX
1 stop13h 47mSpirit Airlines
Deal found 6/10$225
This CheapOair deal was found by Cheapflights users on 6/12. 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.
vie. 9/128:44 amPHX - STL
1 stop22h 23mMultiple Airlines
dom. 9/148:44 amSTL - PHX
1 stop7h 27mMultiple Airlines
Deal found 6/12$239
This Southwest deal was found by Cheapflights users on 6/11. 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.
jue. 10/166:55 pmPHX - STL
Nonstop2h 55mSouthwest
lun. 10/2010:15 pmSTL - PHX
Nonstop3h 20mSouthwest
Deal found 6/11$255
This American Airlines deal was found by Cheapflights users on 6/11. 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.
jue. 8/77:11 pmPHX - STL
Nonstop3h 05mAmerican Airlines
lun. 8/117:53 amSTL - PHX
Nonstop3h 15mAmerican Airlines
Deal found 6/11$257
This FlightHub deal was found by Cheapflights users on 6/11. 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. 9/1712:09 pmPHX - STL
1 stop18h 58mFrontier
mié. 10/17:52 pmSTL - PHX
1 stop25h 33mFrontier
Deal found 6/11$265
This Delta deal was found by Cheapflights users on 6/9. 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.
mié. 9/245:00 pmTUS - STL
1 stop5h 37mDelta
mar. 9/303:30 pmSTL - TUS
1 stop8h 24mDelta
Deal found 6/9$267
This Southwest deal was found by Cheapflights users on 6/10. 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. 8/55:40 amTUS - STL
1 stop7h 20mSouthwest
mié. 8/1310:15 amSTL - TUS
2 stops8h 20mSouthwest
Deal found 6/10$272
This American Airlines deal was found by Cheapflights users on 6/10. 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.
sáb. 8/301:43 pmTUS - STL
2 stops7h 31mAmerican Airlines
mar. 9/98:50 amSTL - TUS
2 stops7h 42mAmerican Airlines
Deal found 6/10$277
This Delta deal was found by Cheapflights users on 6/10. 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. 10/712:59 amPHX - STL
1 stop5h 45mDelta
mar. 10/142:15 pmSTL - PHX
1 stop6h 12mDelta
Deal found 6/10$277

Cheapflights Fare Finder

Customize your flight search to find flights from Arizona to St. Louis 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 junio 12, 2025.
Use the filters below to find and compare flights from Arizona to St. Louis that are best for you.

Fly from

Arizona

Fly to

St. Louis

Route

Depart

Return

Price

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

mié. 10/1

5:28 pm-7:49 am

1 stop12h 21m

Lambert-St Louis

dom. 10/5

8:44 am-8:06 pm

1 stop13h 22m

$169

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

mié. 7/9

12:20 am-9:52 am

1 stop7h 32m

Lambert-St Louis

dom. 7/13

2:27 pm-4:03 pm

Nonstop3h 36m

$201

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

lun. 9/8

8:09 am-1:34 pm

Nonstop3h 25m

Lambert-St Louis

lun. 9/15

9:25 pm-11:03 pm

Nonstop3h 38m

$202

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

jue. 7/24

11:49 pm-9:52 am

1 stop8h 03m

Lambert-St Louis

lun. 7/28

10:47 am-10:34 pm

1 stop13h 47m

$225

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

vie. 7/25

12:38 pm-1:59 pm

1 stop23h 21m

Lambert-St Louis

dom. 7/27

10:47 am-10:34 pm

1 stop13h 47m

$254

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

jue. 8/7

7:11 pm-12:16 am

Nonstop3h 05m

Lambert-St Louis

lun. 8/11

7:53 am-9:08 am

Nonstop3h 15m

$257

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

mié. 9/24

5:00 pm-12:37 am

1 stop5h 37m

Lambert-St Louis

mar. 9/30

3:30 pm-9:54 pm

1 stop8h 24m

$267

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

mar. 8/19

7:55 am-12:50 pm

Nonstop2h 55m

Lambert-St Louis

mar. 8/26

10:25 am-2:50 pm

1 stop6h 25m

$267

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

dom. 8/3

8:21 pm-9:11 am

1 stop10h 50m

Lambert-St Louis

sáb. 8/9

7:29 pm-8:27 am

1 stop14h 58m

$269

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

mar. 8/5

5:40 am-3:00 pm

1 stop7h 20m

Lambert-St Louis

mié. 8/13

10:15 am-4:35 pm

2 stops8h 20m

$272

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Showing 1-10 of 40 results
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Best time to book a flight from Arizona to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Arizona 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 Arizona to St. Louis

What is the cheapest month to book a flight from Arizona to St. Louis?

Currently, August is the cheapest month in which you can book a flight from Arizona to St. Louis (average of $311). Flying from Arizona to St. Louis in March is currently the most expensive (average of $356). 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 AZ to STL?

Find hourly flight availability from Arizona to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated junio 12, 2025.

When flying from Arizona to St. Louis, 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 Arizona to St. Louis

Explore weekly flight availability from Arizona to St. Louis. 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 junio 12, 2025.

The most flights from USAZ to STL are scheduled on a Monday (8 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 St. Louis by month

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

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

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

If weather is an important factor for your trip to St. Louis, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated junio 12, 2025.
Read through reviews of airlines operating flights from Arizona to St. Louis, such as Alaska Airlines, Southwest and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

Boarding

8.1

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

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

Boarding

8.1

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
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

Boarding

8.1

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
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

Boarding

8.1

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
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

Boarding

8.1

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
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.8

Food

7.1

Boarding

8.1

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 Arizona to St. Louis. 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 into for flights to St. Louis from Arizona?

    Located just 12.7 mi from the city center, Lambert-St Louis (STL) is the airport most travelers will use when flying to St. Louis from Arizona.

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

    One-way options have recently been found by users for as low as $64 on Spirit Airlines. Other airlines that offer cheap prices include Frontier from $78 and Southwest from $127 one-way.

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

    The most popular route from Arizona to St. Louis is Phoenix Sky Harbor Intl - Lambert-St Louis. You may also consider Las Vegas Harry Reid Intl - Lambert-St Louis or Tucson - Lambert-St Louis.

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

    The top 3 most reliable airlines when flying from Arizona to St. Louis are SkyWest Airlines (96%), Alaska Airlines (90%) and American Airlines (88%).

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

    While on average a flight from Arizona to St. Louis is generally $326, our data shows the cheapest flight currently is $158. When looking at the most popular route, (Phoenix Sky Harbor Intl - Lambert-St Louis), you can expect to pay $181 for that flight.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Arizona to St. Louis (average of $311). Flying from Arizona to St. Louis in March is currently the most expensive (average of $356). 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

Traveling to a place near Arizona?

Book flights to Arizona if you plan to visit one of these locations
O'Fallon
Maryland Heights
Fairview Heights
Collinsville
Eureka
St. Peters
Glencoe
Festus
Alton
Farmington

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Alternative routes for Arizona to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Arizona to St. Louis

Discover the top 5 airlines that operate flights from Arizona to St. Louis. 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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$98Average$197FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$146Average$450FlexibilityNo cancel feeOn-time71%
DeltaCheapest$216Average$317FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$263Average$405FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$300Average$405FlexibilityNo cancel feeOn-time63%

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