HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$54+ 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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — STL
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Arizona to St. Louis with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 February 20, 2025.

Round-trip from

$111
(Kiwi.com)

One-way from

$54
(Trip.com)

Popular in

January

Cheapest in

June

Average price

$387

Good round-trip deal

$404 or less

Good one-way deal

$207 or less
From Arizona to Lambert-St Louis
Search Deals
One-way flight from Arizona to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($102 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals
Price to beat on a round-trip flight from Arizona to Lambert-St Louis.
Search Deals
Price to beat on a one-way flight from Arizona to Lambert-St Louis.
Search Deals

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 February 20, 2025.

This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/612:22 pmLAS - STL
Nonstop3h 23mFrontier
Mon 3/106:55 pmSTL - LAS
Nonstop3h 41mFrontier
Deal found 2/19$111
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.
Sat 3/1510:51 pmPHX - STL
1 stop22h 58mFrontier
Mon 3/176:55 pmSTL - PHX
1 stop28h 33mFrontier
Deal found 2/18$159
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1610:15 pmLAS - STL
1 stop17h 01mSpirit Airlines
Tue 4/226:11 pmSTL - LAS
1 stop8h 48mSpirit Airlines
Deal found 2/19$217
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/189:15 pmPHX - STL
1 stop10h 01mMultiple Airlines
Tue 4/13:11 pmSTL - PHX
1 stop11h 01mMultiple Airlines
Deal found 2/20$227
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/107:00 amLAS - STL
Nonstop3h 16mMultiple Airlines
Sun 4/136:11 pmSTL - LAS
1 stop8h 48mMultiple Airlines
Deal found 2/20$237
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.
Fri 4/46:00 amLAS - STL
1 stop15h 59mAlaska Airlines
Mon 4/73:11 pmSTL - LAS
1 stop10h 48mAlaska Airlines
Deal found 2/20$290
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.
Mon 4/145:25 pmLAS - STL
1 stop5h 17mDelta
Fri 4/187:15 pmSTL - LAS
1 stop6h 10mDelta
Deal found 2/19$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.
Mon 4/75:15 amPHX - STL
3 stops34h 37mSpirit Airlines
Thu 4/106:11 pmSTL - PHX
2 stops21h 21mSpirit Airlines
Deal found 2/18$313
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1012:34 pmTUS - STL
1 stop7h 44mAmerican Airlines
Wed 3/125:37 pmSTL - TUS
1 stop7h 23mAmerican Airlines
Deal found 2/20$317
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.
Mon 3/105:40 amTUS - STL
1 stop5h 20mSouthwest
Wed 3/1210:25 amSTL - TUS
2 stops10h 15mSouthwest
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.
Wed 5/1411:25 amPHX - STL
1 stop8h 08mDelta
Tue 5/202:15 pmSTL - PHX
1 stop6h 13mDelta
Deal found 2/19$323
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/38:30 amPHX - STL
1 stop5h 19mUnited Airlines
Sun 5/46:15 amSTL - PHX
1 stop7h 03mUnited Airlines
Deal found 2/19$329

Find flights from Arizona to St. Louis within your budget

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 February 20, 2025.

Fly from

Arizona

Fly to

St. Louis

Route

Depart

Return

Price

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Thu 3/6

12:22 pm-5:45 pm

Nonstop3h 23m

Lambert-St Louis

Mon 3/10

6:55 pm-8:36 pm

Nonstop3h 41m

$111

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Sat 3/15

10:51 pm-11:49 pm

1 stop22h 58m

Lambert-St Louis

Mon 3/17

6:55 pm-9:28 pm

1 stop28h 33m

$159

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Wed 4/16

10:15 pm-5:16 pm

1 stop17h 01m

Lambert-St Louis

Tue 4/22

6:11 pm-12:59 am

1 stop8h 48m

$217

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Tue 3/18

9:15 pm-9:16 am

1 stop10h 01m

Lambert-St Louis

Tue 4/1

3:11 pm-12:12 am

1 stop11h 01m

$227

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Thu 4/10

7:00 am-12:16 pm

Nonstop3h 16m

Lambert-St Louis

Sun 4/13

6:11 pm-12:59 am

1 stop8h 48m

$237

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Fri 4/4

6:00 am-11:59 pm

1 stop15h 59m

Lambert-St Louis

Mon 4/7

3:11 pm-11:59 pm

1 stop10h 48m

$290

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Mon 4/14

5:25 pm-12:42 am

1 stop5h 17m

Lambert-St Louis

Fri 4/18

7:15 pm-11:25 pm

1 stop6h 10m

$291

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Mon 4/7

5:15 am-5:52 pm

3 stops34h 37m

Lambert-St Louis

Thu 4/10

6:11 pm-1:32 pm

2 stops21h 21m

$313

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Mon 3/10

12:34 pm-10:18 pm

1 stop7h 44m

Lambert-St Louis

Wed 3/12

5:37 pm-11:00 pm

1 stop7h 23m

$317

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Mon 3/10

5:40 am-1:00 pm

1 stop5h 20m

Lambert-St Louis

Wed 3/12

10:25 am-6:40 pm

2 stops10h 15m

$322

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 42 results
1
2
3
...
5

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.

Travel insights for flights from Arizona to St. Louis

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

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 February 20, 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 February 20, 2025.

The most flights from USAZ to STL are scheduled on a Monday (10 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 February 20, 2025.
Read through reviews of airlines operating flights from Arizona to St. Louis, such as Southwest, Alaska Airlines and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Overall

8.1

Food

7.1

Crew

8.7

Boarding

8.2

Comfort

8.1

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

Overall

8.1

Food

7.1

Crew

8.7

Boarding

8.2

Comfort

8.1

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
9,692 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Overall

8.1

Food

7.1

Crew

8.7

Boarding

8.2

Comfort

8.1

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
8,220 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Overall

8.1

Food

7.1

Crew

8.7

Boarding

8.2

Comfort

8.1

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

Overall

8.1

Food

7.1

Crew

8.7

Boarding

8.2

Comfort

8.1

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
8,766 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Overall

8.1

Food

7.1

Crew

8.7

Boarding

8.2

Comfort

8.1

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 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 $54 on Frontier. Other airlines that offer cheap prices include Spirit Airlines from $118 and Sun Country Air from $120 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 (100%), Alaska Airlines (93%) and American Airlines (91%).

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

    While on average a flight from Arizona to St. Louis is generally $359, 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 $177 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
Fenton
Fairview Heights
Maryland Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Alton
Farmington
Chesterfield

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Arizona to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
Newark to St. Louis flights
LaGuardia to St. Louis flights
Dulles Intl to St. Louis flights
John F Kennedy Intl to St. Louis flights
LaGuardia to Kansas City flights
Los Angeles to St. Louis flights
Boston to Kansas City flights
Newark to Kansas City flights
Los Angeles to Kansas City flights
Boston to St. Louis flights
O'Hare Intl to Kansas City flights
John F Kennedy Intl to Kansas City flights
Minneapolis to St. Louis flights
Seattle to St. Louis flights
Seattle to Kansas City flights
Denver to Kansas City flights
Dulles Intl to Kansas City flights
Baltimore to St. Louis flights
Reagan-National to Kansas City flights
Reagan-National to St. Louis flights
San Francisco to St. Louis flights
Baltimore to Kansas City flights
Dallas/Fort Worth to Kansas City flights
Philadelphia to St. Louis flights
Denver to St. Louis flights
Atlanta to St. Louis flights
Sky Harbor Intl to St. Louis flights
Charlotte to St. Louis flights
San Francisco to Kansas City flights
Ontario to Kansas City flights
Minneapolis to Kansas City flights
Dallas/Fort Worth to St. Louis flights
Atlanta to Kansas City flights
O'Hare Intl to St. Louis flights
Ontario to St. Louis flights
Sky Harbor Intl to Kansas City flights
Detroit to Kansas City flights
Detroit to St. Louis flights
Salt Lake City to St. Louis flights
Midway to Kansas City flights
Tampa to Kansas City flights
Raleigh to St. Louis flights
Hobby to Kansas City flights
Orlando to St. Louis flights
Las Vegas to Kansas City flights
Salt Lake City to Kansas City flights
Hobby to St. Louis flights
Miami to St. Louis flights
Orlando to Kansas City flights
Las Vegas to St. Louis flights

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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$78Average$148FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$131Average$366FlexibilityNo cancel feeOn-time71%
DeltaCheapest$216Average$296FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$273Average$423FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$297Average$412FlexibilityNo cancel feeOn-time63%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.