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Cheap flights from St. Louis to Arizona from $79

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Arizona departing on 5/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from St. Louis to Arizona

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
4:19 pm - 11:14 am
STL
-
LAS
20h 55m
1 stop
Frontier Logo
12:59 am - 2:48 pm
LAS
-
STL
11h 49m
1 stop
$159Frontier
Fri, May 8 - Sat, May 9
Frontier Logo
3:33 pm - 11:54 pm
STL
-
LAS
10h 21m
1 stop
Frontier Logo
6:00 am - 6:04 pm
LAS
-
STL
10h 04m
1 stop
$160Frontier
Thu, May 7 - Sat, May 9
Frontier Logo
3:33 pm - 11:54 pm
STL
-
LAS
10h 21m
1 stop
Frontier Logo
12:59 am - 2:48 pm
LAS
-
STL
11h 49m
1 stop
$161Frontier
Thu, May 7 - Sat, May 9
Frontier Logo
12:16 pm - 1:57 pm
STL
-
LAS
3h 41mnonstop
Frontier Logo
6:00 am - 2:48 pm
LAS
-
STL
6h 48m
1 stop
$162Frontier
Sun, May 17 - Sun, May 24
Southwest Logo
3:55 pm - 9:15 pm
STL
-
TUS
7h 20m
1 stop
Southwest Logo
4:20 pm - 11:15 pm
TUS
-
STL
4h 55m
1 stop
$347Southwest
Tue, Apr 21 - Wed, Apr 22
Southwest Logo
5:30 am - 11:55 am
STL
-
TUS
8h 25m
2 stops
Southwest Logo
4:20 pm - 11:15 pm
TUS
-
STL
4h 55m
1 stop
$352Southwest
Tue, Apr 21 - Wed, Apr 22
Delta Logo
2:20 pm - 9:31 pm
STL
-
TUS
9h 11m
1 stop
Delta Logo
11:04 am - 7:03 pm
TUS
-
STL
5h 59m
1 stop
$357Delta
Tue, May 5 - Thu, May 7
American Airlines Logo
5:20 am - 8:59 am
STL
-
TUS
5h 39m
1 stop
American Airlines Logo
3:55 pm - 11:59 pm
TUS
-
STL
6h 04m
1 stop
$358American Airlines
Sat, May 16 - Sat, May 23
Delta Logo
2:20 pm - 9:31 pm
STL
-
TUS
9h 11m
1 stop
Delta Logo
2:06 pm - 11:13 pm
TUS
-
STL
7h 07m
1 stop
$367Delta
Thu, Apr 23 - Mon, Apr 27
American Airlines Logo
2:37 pm - 6:44 pm
STL
-
FLG
6h 07m
1 stop
American Airlines Logo
5:01 pm - 12:12 am
FLG
-
STL
5h 11m
1 stop
$474American Airlines
Tue, May 12 - Sat, May 16

Frontier flights from St. Louis to Arizona

Our best Frontier deals on St. Louis to Arizona flight tickets
Frontier
May 8
STL4:19 pmLambert-St Louis
20h 55m
1 stop
LAS11:14 amLas Vegas Harry Reid Intl
May 9
LAS12:59 amLas Vegas Harry Reid Intl
11h 49m
1 stop
STL2:48 pmLambert-St Louis
$159
Frontier
May 7
STL3:33 pmLambert-St Louis
10h 21m
1 stop
LAS11:54 pmLas Vegas Harry Reid Intl
May 9
LAS6:00 amLas Vegas Harry Reid Intl
10h 04m
1 stop
STL6:04 pmLambert-St Louis
$160
Frontier
May 7
STL3:33 pmLambert-St Louis
10h 21m
1 stop
LAS11:54 pmLas Vegas Harry Reid Intl
May 9
LAS12:59 amLas Vegas Harry Reid Intl
11h 49m
1 stop
STL2:48 pmLambert-St Louis
$161

Delta flights from St. Louis to Arizona

Our best Delta deals on St. Louis to Arizona flight tickets
Delta
May 5
STL2:20 pmLambert-St Louis
9h 11m
1 stop
TUS9:31 pmTucson
May 7
TUS11:04 amTucson
5h 59m
1 stop
STL7:03 pmLambert-St Louis
$357
Delta
Apr 23
STL2:20 pmLambert-St Louis
9h 11m
1 stop
TUS9:31 pmTucson
Apr 27
TUS2:06 pmTucson
7h 07m
1 stop
STL11:13 pmLambert-St Louis
$367
Delta
May 19
STL2:27 pmLambert-St Louis
9h 03m
1 stop
TUS9:30 pmTucson
May 24
TUS1:37 pmTucson
8h 22m
1 stop
STL11:59 pmLambert-St Louis
$397

momondo 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, momondo users made 832,500 searches. Data last updated April 2, 2026.
Use the filters below to find and compare flights from St. Louis to Arizona that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 5/8

4:19 pm-11:14 am

1 stop20h 55m

Las Vegas Harry Reid Intl

Sat 5/9

12:59 am-2:48 pm

1 stop11h 49m

$159

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Thu 5/7

3:33 pm-11:54 pm

1 stop10h 21m

Las Vegas Harry Reid Intl

Sat 5/9

6:00 am-6:04 pm

1 stop10h 04m

$160

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Thu 5/7

3:33 pm-11:54 pm

1 stop10h 21m

Las Vegas Harry Reid Intl

Sat 5/9

12:59 am-2:48 pm

1 stop11h 49m

$161
Quickest round-trip

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sun 5/17

12:16 pm-1:57 pm

Nonstop3h 41m

Las Vegas Harry Reid Intl

Sun 5/24

6:00 am-2:48 pm

1 stop6h 48m

$162

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 4/21

3:55 pm-9:15 pm

1 stop7h 20m

Tucson

Wed 4/22

4:20 pm-11:15 pm

1 stop4h 55m

$347

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 4/21

5:30 am-11:55 am

2 stops8h 25m

Tucson

Wed 4/22

4:20 pm-11:15 pm

1 stop4h 55m

$352

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Tue 5/5

2:20 pm-9:31 pm

1 stop9h 11m

Tucson

Thu 5/7

11:04 am-7:03 pm

1 stop5h 59m

$357

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 5/16

5:20 am-8:59 am

1 stop5h 39m

Tucson

Sat 5/23

3:55 pm-11:59 pm

1 stop6h 04m

$358

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Thu 4/23

2:20 pm-9:31 pm

1 stop9h 11m

Tucson

Mon 4/27

2:06 pm-11:13 pm

1 stop7h 07m

$367

St. LouisFlagstaff

STL - FLG

STLFLG

Lambert-St Louis

Tue 5/12

2:37 pm-6:44 pm

1 stop6h 07m

Flagstaff Pulliam

Sat 5/16

5:01 pm-12:12 am

1 stop5h 11m

$474

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Arizona from

How to get the cheapest flight ticket from St. Louis to Arizona

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Arizona?

The month of November is, on average, the cheapest month to fly to Arizona from St. Louis, with most prices found around $308. If you aren’t able to travel to Arizona during the month of November, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $312.

What is the cheapest day to depart on your flight to Arizona?

On average, the least expensive day to fly to Arizona from St. Louis is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $370. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Arizona is Sunday, with ticket prices averaging around $451.

What is the cheapest time of day to depart on your flight to Arizona?

Our most recent data shows that the best time of day to fly to Arizona is in the evening. Flights from St. Louis to Arizona during this time can be as low as $304. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $430 on average. Flights to Arizona from St. Louis in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Lambert-St Louis to Arizona flight route?

Fly from Lambert-St Louis to Phoenix Sky Harbor Intl for the best Lambert-St Louis - Arizona flight prices

How far in advance should I book a flight to Arizona?

You are more likely to see cheaper flights to Arizona from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Arizona for around $351 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Arizona from St. Louis for as low as $298 on momondo.

What cabin class options are available on Lambert-St Louis to Arizona flights?

There are 3 cabin classes available to choose from on Lambert-St Louis to Arizona flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on St. Louis to Arizona flights?

You could potentially save up to 58% on your flight if you consider stops on a St. Louis to Arizona flight.

Cheap St. Louis to Arizona flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Arizona

Best Price Found

$211

Fastest flight time

3h 10m

Direct flights

Every day

Airports in Arizona

66 airports
The best one-way flight to Arizona from St. Louis in the past 72 hours is $211. The best round-trip flight deal from St. Louis to Arizona found on momondo in the last 72 hours is $352.
The fastest flight from St. Louis to Arizona takes 3h 10m
Direct flights go from St. Louis to Arizona every day.
There are 66 airports in Arizona. From St. Louis there are direct flights to Phoenix Sky Harbor Intl (PHX), Las Vegas Harry Reid Intl (LAS).
Search flight deals

Frequently asked questions about flying from St. Louis to Arizona

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Arizona?

    Prices for flights from Lambert-St Louis Airport to Arizona refresh daily.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Arizona?

  • How old do you have to be to fly from Lambert-St Louis Airport to Arizona?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Arizona.

  • What documentation or ID do you need to fly to Arizona?

    The travel and health documents you'll need for your trip to Arizona may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Arizona. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from St. Louis to Arizona?

Best airlines flying from St. Louis to Arizona

Compare and see reviews for airlines that fly from St. Louis to Arizona with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $94Free CancellationRating
5.7
3,004 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $121Free CancellationRating
6.3
8,576 reviews
Search Spirit Airlines flights
DeltaPriceFrom $141Free CancellationRating
7.9
8,371 reviews
Search Delta flights
United AirlinesPriceFrom $148Free CancellationRating
7.4
9,532 reviews
Search United Airlines flights
American AirlinesPriceFrom $209Free CancellationRating
7.1
11,549 reviews
Search American Airlines flights
SouthwestPriceFrom $218Free CancellationRating
8.0
4,337 reviews
Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Arizona?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Arizona. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from St. Louis to Arizona with flexible booking policies on momondo?

Flights from St. Louis to Arizona with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from St. Louis to Arizona?

momondo provides multiple filters to help you find the best flight to Arizona from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from St. Louis to Arizona right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Arizona, momondo offers a useful price alert feature which will track prices for flights to Arizona from St. Louis and alert you when they change.

An easier way to manage your Arizona trip

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