How does KAYAK find such low prices on flights from Arizona to St. Louis?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Arizona to St. Louis.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Arizona to St. Louis?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Arizona is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Arizona to St. Louis?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Arizona with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Arizona to St. Louis?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Arizona up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$81 CHEAP FLIGHTS from Arizona to St. Louis

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Flight Deals

Cheap Flights from Arizona to St. Louis

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Arizona to St. Louis

Wed, Nov 18 - Tue, Nov 24

7:21 pm - 12:33 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

16h 12m1 stop Las Vegas Harry Reid Intl

5:15 pm - 11:25 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

19h 10m1 stop Las Vegas Harry Reid Intl

$298Frontier

Wed, Jan 20 - Sun, Jan 24

9:38 pm - 4:58 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

18h 20m2 stops Denver Intl Las Vegas Harry Reid Intl

5:59 pm - 12:41 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

7h 42m1 stop Las Vegas Harry Reid Intl

$306Frontier

Thu, Dec 3 - Mon, Dec 7

7:40 am - 1:55 pmTUS Tucson-STL Lambert-St Louis

5h 15m1 stop Dallas/Fort Worth

7:55 am - 12:03 pmSTL Lambert-St Louis-TUS Tucson

5h 08m1 stop Phoenix Sky Harbor Intl

$355American Airlines

Wed, Dec 30 - Wed, Jan 6

5:55 pm - 11:52 pmTUS Tucson-STL Lambert-St Louis

4h 57m1 stop Phoenix Sky Harbor Intl

5:51 pm - 11:57 pmSTL Lambert-St Louis-TUS Tucson

7h 06m1 stop Chicago O'Hare Intl

$355American Airlines

Thu, Dec 3 - Mon, Dec 7

12:41 pm - 10:59 pmTUS Tucson-STL Lambert-St Louis

9h 18m2 stops Denver Intl Chicago O'Hare Intl

8:40 am - 1:35 pmSTL Lambert-St Louis-TUS Tucson

5h 55m1 stop Denver Intl

$360United Airlines

Thu, Dec 3 - Mon, Dec 7

11:09 am - 11:59 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

11h 50m2 stops San Diego Seattle/Tacoma Intl

7:54 pm - 12:43 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

5h 49m1 stop Denver Intl

$369Multiple Airlines

Fri, Dec 18 - Mon, Dec 21

9:00 pm - 12:55 amPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 55mnonstop

9:45 pm - 12:15 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 30mnonstop

$377Southwest

Tue, Nov 24 - Wed, Nov 25

5:45 am - 9:30 amPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 45mnonstop

5:30 pm - 7:55 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 25mnonstop

$377Southwest

Thu, Dec 10 - Mon, Dec 14

8:05 am - 11:59 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

14h 54m2 stops San Diego Seattle/Tacoma Intl

6:04 am - 7:20 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

14h 16m2 stops Seattle/Tacoma Intl San Diego

$383Alaska Airlines

Fri, Dec 11 - Sun, Dec 13

2:41 pm - 8:57 pmTUS Tucson-STL Lambert-St Louis

5h 16m1 stop Denver Intl

6:30 am - 1:35 pmSTL Lambert-St Louis-TUS Tucson

8h 05m2 stops Chicago O'Hare Intl Denver Intl

$391United Airlines

Recent last minute flight deals from Arizona to St. Louis

Wed, Nov 11 - Thu, Nov 19

8:30 am - 12:33 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

27h 03m1 stop Las Vegas Harry Reid Intl

11:40 am - 12:42 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

14h 02m1 stop Denver Intl

$338Frontier

Wed, Nov 11 - Mon, Nov 23

3:46 pm - 12:33 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

19h 47m2 stops Denver Intl Las Vegas Harry Reid Intl

3:04 pm - 9:16 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

7h 12m1 stop Denver Intl

$350Frontier

Mon, Nov 9 - Mon, Nov 16

5:01 am - 11:19 amPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

5h 18m1 stop Dallas/Fort Worth

6:00 am - 7:40 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

14h 40m2 stops Seattle/Tacoma Intl San Diego

$454Multiple Airlines

Wed, Nov 11 - Thu, Nov 19

7:21 pm - 12:33 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

16h 12m1 stop Las Vegas Harry Reid Intl

2:00 pm - 11:25 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

22h 25m3 stops Jonesboro Nashville Intl Las Vegas Harry Reid Intl

$494Multiple Airlines

Tue, Nov 10 - Wed, Nov 11

5:45 am - 9:35 amPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 50mnonstop

2:05 pm - 4:30 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 25mnonstop

$641Southwest

Tue, Nov 10 - Wed, Nov 11

1:35 pm - 5:25 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 50mnonstop

8:25 am - 12:15 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

4h 50m1 stop Omaha Eppley Airfield

$647Southwest

Fri, Nov 13 - Mon, Nov 16

7:56 pm - 11:56 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

3h 00mnonstop

2:28 pm - 4:55 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 27mnonstop

$701American Airlines

Thu, Nov 12 - Tue, Nov 17

9:30 am - 1:38 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

3h 08mnonstop

8:00 am - 10:36 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 36mnonstop

$701American Airlines

Mon, Nov 9 - Fri, Nov 13

2:30 pm - 8:59 pmTUS Tucson-STL Lambert-St Louis

5h 29m1 stop Denver Intl

5:00 am - 3:27 pmSTL Lambert-St Louis-TUS Tucson

11h 27m2 stops Chicago O'Hare Intl San Francisco

$1,037United Airlines

Mon, Nov 9 - Fri, Nov 13

10:42 am - 11:24 pmTUS Tucson-STL Lambert-St Louis

11h 42m2 stops Denver Intl Chicago O'Hare Intl

1:08 pm - 9:34 pmSTL Lambert-St Louis-TUS Tucson

9h 26m2 stops Chicago O'Hare Intl Denver Intl

$1,042United Airlines

Recent direct flight deals from Arizona to St. Louis

Mon, Dec 28 - Thu, Dec 31

7:56 pm - 11:52 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 56mnonstop

7:35 am - 10:14 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 39mnonstop

$377American Airlines

Fri, Nov 27 - Fri, Dec 4

9:30 am - 1:32 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

3h 02mnonstop

7:55 am - 10:34 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 39mnonstop

$377American Airlines

Fri, Dec 18 - Mon, Dec 21

9:00 pm - 12:55 amPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 55mnonstop

9:45 pm - 12:15 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 30mnonstop

$377Southwest

Tue, Nov 24 - Wed, Nov 25

5:45 am - 9:30 amPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 45mnonstop

5:30 pm - 7:55 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 25mnonstop

$377Southwest

Tue, Dec 8 - Mon, Dec 14

9:45 am - 1:51 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

3h 06mnonstop

7:55 am - 10:34 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 39mnonstop

$377American Airlines

Mon, Nov 23 - Fri, Nov 27

7:56 pm - 11:49 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 53mnonstop

2:17 pm - 4:50 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 33mnonstop

$377American Airlines

Fri, Dec 11 - Mon, Dec 14

7:56 pm - 11:52 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 56mnonstop

7:55 am - 10:34 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 39mnonstop

$377American Airlines

Mon, Dec 7 - Wed, Dec 9

7:56 pm - 11:52 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 56mnonstop

7:55 am - 10:34 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 39mnonstop

$377American Airlines

Mon, Nov 23 - Fri, Nov 27

7:56 pm - 11:49 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 53mnonstop

2:17 pm - 4:50 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 33mnonstop

$377American Airlines

Thu, Dec 10 - Mon, Dec 14

7:56 pm - 11:52 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 56mnonstop

7:55 am - 10:34 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 39mnonstop

$377American Airlines

Useful Info

Low season	January
High season	July
Cheapest flight	$81

Best time to beat the crowds with an average 7% drop in price.

Most popular time to fly with an average 5% increase in price.

Flight from Phoenix to St. Louis

How does KAYAK find such low prices on flights from Arizona to St. Louis?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Arizona to St. Louis.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Arizona to St. Louis?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Arizona is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Arizona to St. Louis?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Arizona with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Arizona to St. Louis?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Arizona up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.