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Cheap flights from St. Louis to Arizona from $65

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 1/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
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
9:45 pm - 11:44 pm
STL
-
LAS
3h 59mnonstop
Frontier Logo
3:50 pm - 9:06 pm
LAS
-
STL
3h 16mnonstop
$123Frontier
Mon, Feb 2 - Thu, Feb 5
Frontier Logo
10:01 pm - 11:49 pm
STL
-
LAS
3h 48mnonstop
Frontier Logo
4:10 pm - 9:26 pm
LAS
-
STL
3h 16mnonstop
$125Frontier
Thu, Feb 5 - Thu, Feb 12
Frontier Logo
12:37 pm - 2:25 pm
STL
-
LAS
3h 48mnonstop
Frontier Logo
12:27 pm - 2:48 pm
LAS
-
STL
24h 21m1 stop
$126Frontier
Sun, Jan 11 - Tue, Jan 13
Frontier Logo
10:10 pm - 12:02 am
STL
-
LAS
3h 52mnonstop
Frontier Logo
12:59 am - 10:02 am
LAS
-
STL
7h 03m1 stop
$127Frontier
Mon, Jan 5 - Tue, Jan 6
American Airlines Logo
11:55 am - 6:13 pm
STL
-
TUS
7h 18m1 stop
American Airlines Logo
8:00 am - 2:50 pm
TUS
-
STL
5h 50m1 stop
$243American Airlines
Sat, Jan 17 - Tue, Jan 20
Delta Logo
9:59 am - 4:42 pm
STL
-
TUS
7h 43m1 stop
Delta Logo
1:42 pm - 11:37 pm
TUS
-
STL
8h 55m1 stop
$257Delta
Sat, Jan 17 - Tue, Jan 20
United Airlines Logo
2:45 pm - 9:26 pm
STL
-
TUS
7h 41m1 stop
United Airlines Logo
2:32 pm - 8:58 pm
TUS
-
STL
5h 26m1 stop
$265United Airlines
Wed, Jan 14 - Sun, Jan 18
American Airlines Logo
9:25 am - 5:08 pm
STL
-
TUS
8h 43m2 stops
American Airlines Logo
4:07 pm - 11:59 pm
TUS
-
STL
6h 52m1 stop
$268American Airlines
Sat, Jan 17 - Tue, Jan 20
United Airlines Logo
6:00 am - 11:53 am
STL
-
TUS
6h 53m1 stop
United Airlines Logo
8:15 am - 7:27 pm
TUS
-
STL
10h 12m2 stops
$292United Airlines
Wed, Jan 14 - Wed, Jan 21
Southwest Logo
2:20 pm - 10:25 pm
STL
-
TUS
9h 05m2 stops
Southwest Logo
8:20 am - 3:00 pm
TUS
-
STL
5h 40m1 stop
$293Southwest
Wed, Jan 14 - Sun, Jan 18

Frontier flights from St. Louis to Arizona

Our best Frontier deals on St. Louis to Arizona flight tickets
Frontier
Feb 2
STL9:45 pmLambert-St Louis
3h 59m
LAS11:44 pmLas Vegas Harry Reid Intl
Feb 5
LAS3:50 pmLas Vegas Harry Reid Intl
3h 16m
STL9:06 pmLambert-St Louis
$123
Find similar
Frontier
Feb 5
STL10:01 pmLambert-St Louis
3h 48m
LAS11:49 pmLas Vegas Harry Reid Intl
Feb 12
LAS4:10 pmLas Vegas Harry Reid Intl
3h 16m
STL9:26 pmLambert-St Louis
$125
Find similar
Frontier
Jan 11
STL12:37 pmLambert-St Louis
3h 48m
LAS2:25 pmLas Vegas Harry Reid Intl
Jan 13
LAS12:27 pmLas Vegas Harry Reid Intl
24h 21m
1 stop
STL2:48 pmLambert-St Louis
$126
Find similar

American Airlines flights from St. Louis to Arizona

Our best American Airlines deals on St. Louis to Arizona flight tickets
American Airlines
Jan 17
STL11:55 amLambert-St Louis
7h 18m
1 stop
TUS6:13 pmTucson
Jan 20
TUS8:00 amTucson
5h 50m
1 stop
STL2:50 pmLambert-St Louis
$243
Find similar
American Airlines
Jan 17
STL9:25 amLambert-St Louis
8h 43m
2 stops
TUS5:08 pmTucson
Jan 20
TUS4:07 pmTucson
6h 52m
1 stop
STL11:59 pmLambert-St Louis
$268
Find similar
American Airlines
Feb 17
STL2:26 pmLambert-St Louis
7h 33m
1 stop
TUS8:59 pmTucson
Feb 21
TUS5:56 pmTucson
4h 54m
1 stop
STL11:50 pmLambert-St Louis
$287
Find similar

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 December 18, 2025.
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

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Mon 2/2

9:45 pm-11:44 pm

Nonstop3h 59m

Las Vegas Harry Reid Intl

Thu 2/5

3:50 pm-9:06 pm

Nonstop3h 16m

$123

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Thu 2/5

10:01 pm-11:49 pm

Nonstop3h 48m

Las Vegas Harry Reid Intl

Thu 2/12

4:10 pm-9:26 pm

Nonstop3h 16m

$125

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sun 1/11

12:37 pm-2:25 pm

Nonstop3h 48m

Las Vegas Harry Reid Intl

Tue 1/13

12:27 pm-2:48 pm

1 stop24h 21m

$126

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Mon 1/5

10:10 pm-12:02 am

Nonstop3h 52m

Las Vegas Harry Reid Intl

Tue 1/6

12:59 am-10:02 am

1 stop7h 03m

$127

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 1/17

11:55 am-6:13 pm

1 stop7h 18m

Tucson

Tue 1/20

8:00 am-2:50 pm

1 stop5h 50m

$243

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 1/17

9:59 am-4:42 pm

1 stop7h 43m

Tucson

Tue 1/20

1:42 pm-11:37 pm

1 stop8h 55m

$257

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 1/14

2:45 pm-9:26 pm

1 stop7h 41m

Tucson

Sun 1/18

2:32 pm-8:58 pm

1 stop5h 26m

$265

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Sat 1/17

9:25 am-5:08 pm

2 stops8h 43m

Tucson

Tue 1/20

4:07 pm-11:59 pm

1 stop6h 52m

$268

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 1/14

6:00 am-11:53 am

1 stop6h 53m

Tucson

Wed 1/21

8:15 am-7:27 pm

2 stops10h 12m

$292

St. LouisTucson

STL - TUS

STLTUS

Lambert-St Louis

Wed 1/14

2:20 pm-10:25 pm

2 stops9h 05m

Tucson

Sun 1/18

8:20 am-3:00 pm

1 stop5h 40m

$293

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 $313.

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 $477.

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 at noon. Flights from St. Louis to Arizona during this time can be as low as $373. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $436 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 $372 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 $339 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 16% 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

$125

Fastest flight time

3h 20m

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 $125. The best round-trip flight deal from St. Louis to Arizona found on momondo in the last 72 hours is $286.
The fastest flight from St. Louis to Arizona takes 3h 20m
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

  • 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
5.8
3,081 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $158Free CancellationRating
6.3
8,190 reviews
Search Spirit Airlines flights
United AirlinesPriceFrom $210Free CancellationRating
7.4
9,093 reviews
Search United Airlines flights
American AirlinesPriceFrom $217Free CancellationRating
7.2
11,055 reviews
Search American Airlines flights
SouthwestPriceFrom $222Free CancellationRating
7.9
4,250 reviews
Search Southwest flights
DeltaPriceFrom $236Free CancellationRating
7.9
8,008 reviews
Search Delta 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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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