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.

$82 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

Sat, Oct 17 - Fri, Oct 23

9:15 am - 6:57 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

7h 42m1 stop Denver Intl

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

14h 10m1 stop Denver Intl

$278Frontier

Fri, Nov 13 - Mon, Nov 16

6:00 am - 5:40 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

10h 40m2 stops Houston George Bush Intcntl Atlanta Hartsfield-Jackson

7:59 pm - 6:02 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

23h 03m2 stops Denver Intl Los Angeles

$278Frontier

Fri, Oct 23 - Tue, Oct 27

8:51 pm - 6:57 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

20h 06m1 stop Denver Intl

7:02 am - 6:42 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

13h 40m2 stops Seattle/Tacoma Intl San Diego

$309Multiple Airlines

Mon, Oct 19 - Tue, Oct 27

6:15 am - 7:15 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

11h 00m1 stop Denver Intl

7:02 am - 6:42 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

13h 40m2 stops Seattle/Tacoma Intl San Diego

$319Multiple Airlines

Wed, Oct 28 - Wed, Nov 4

3:43 pm - 8:43 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

3h 00mnonstop

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

3h 36mnonstop

$337American Airlines

Tue, Oct 20 - Mon, Oct 26

8:35 am - 1:37 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

3h 02mnonstop

2:31 pm - 4:05 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 34mnonstop

$337American Airlines

Thu, Oct 22 - Thu, Oct 29

8:25 pm - 1:20 amPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 55mnonstop

5:50 pm - 7:10 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 20mnonstop

$337Southwest

Thu, Oct 15 - Mon, Oct 19

8:25 pm - 1:20 amPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 55mnonstop

9:50 pm - 11:15 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 25mnonstop

$337Southwest

Tue, Oct 27 - Tue, Nov 3

6:30 am - 2:13 pmTUS Tucson-STL Lambert-St Louis

5h 43m1 stop Houston George Bush Intcntl

8:50 am - 1:24 pmSTL Lambert-St Louis-TUS Tucson

5h 34m1 stop Denver Intl

$355United Airlines

Tue, Oct 27 - Tue, Nov 3

5:30 am - 12:38 pmTUS Tucson-STL Lambert-St Louis

5h 08m1 stop Denver Intl

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

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

$360United Airlines

Recent last minute flight deals from Arizona to St. Louis

Wed, Sep 30 - Sun, Oct 4

9:15 am - 7:17 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

8h 02m1 stop Denver Intl

12:27 pm - 12:22 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

25h 55m1 stop Las Vegas Harry Reid Intl

$441Frontier

Thu, Oct 1 - Sun, Oct 4

8:56 pm - 7:17 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

20h 21m1 stop Denver Intl

12:27 pm - 12:22 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

25h 55m1 stop Las Vegas Harry Reid Intl

$465Frontier

Wed, Sep 30 - Wed, Oct 7

8:30 am - 1:44 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

3h 14mnonstop

8:03 am - 9:38 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 35mnonstop

$601American Airlines

Sat, Oct 3 - Sat, Oct 3

6:00 am - 10:50 amPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 50mnonstop

1:50 pm - 3:15 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 25mnonstop

$601Southwest

Sat, Oct 3 - Sat, Oct 10

11:10 am - 4:00 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 50mnonstop

6:25 am - 7:45 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 20mnonstop

$601Southwest

Fri, Oct 2 - Sat, Oct 3

12:23 am - 10:13 amPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

7h 50m1 stop Chicago O'Hare Intl

2:30 pm - 3:46 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 16mnonstop

$611American Airlines

Sat, Oct 3 - Sat, Oct 3

7:10 am - 3:43 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

6h 33m1 stop Chicago O'Hare Intl

4:49 pm - 8:14 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

5h 25m1 stop Denver Intl

$611United Airlines

Fri, Oct 2 - Sun, Oct 4

8:56 pm - 7:17 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

20h 21m1 stop Denver Intl

12:27 pm - 11:15 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

24h 48m2 stops Las Vegas Harry Reid Intl Page

$630Multiple Airlines

Thu, Oct 1 - Sun, Oct 4

4:42 pm - 11:44 pmPRC Prescott-STL Lambert-St Louis

5h 02m1 stop Denver Intl

4:39 pm - 9:59 pmSTL Lambert-St Louis-PRC Prescott

7h 20m1 stop Denver Intl

$738United Airlines

Wed, Sep 30 - Tue, Oct 6

6:35 am - 12:44 amTUS Tucson-STL Lambert-St Louis

16h 09m2 stops Los Angeles Salt Lake City

2:25 pm - 9:55 pmSTL Lambert-St Louis-TUS Tucson

9h 30m1 stop Atlanta Hartsfield-Jackson

$986Delta

Recent direct flight deals from Arizona to St. Louis

Wed, Oct 28 - Wed, Nov 4

3:43 pm - 8:43 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

3h 00mnonstop

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

3h 36mnonstop

$337American Airlines

Tue, Oct 20 - Mon, Oct 26

8:35 am - 1:37 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

3h 02mnonstop

2:31 pm - 4:05 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 34mnonstop

$337American Airlines

Thu, Oct 22 - Thu, Oct 29

8:25 pm - 1:20 amPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 55mnonstop

5:50 pm - 7:10 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 20mnonstop

$337Southwest

Thu, Oct 15 - Mon, Oct 19

8:25 pm - 1:20 amPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 55mnonstop

9:50 pm - 11:15 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 25mnonstop

$337Southwest

Wed, Nov 4 - Sat, Nov 7

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

$337American Airlines

Sat, Oct 31 - Mon, Nov 2

3:43 pm - 8:43 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

3h 00mnonstop

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

3h 36mnonstop

$337American Airlines

Thu, Nov 5 - Tue, Nov 10

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

3h 08mnonstop

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

3h 27mnonstop

$337American Airlines

Thu, Dec 10 - Mon, Dec 14

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

3h 00mnonstop

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

3h 36mnonstop

$337American Airlines

Sat, Oct 24 - Mon, Oct 26

8:35 am - 1:37 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

3h 02mnonstop

2:31 pm - 4:05 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 34mnonstop

$337American Airlines

Sat, Oct 31 - Sat, Nov 7

11:35 am - 4:25 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 50mnonstop

6:20 am - 8:45 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 25mnonstop

$337Southwest

Useful Info

Low season	January
High season	July
Cheapest flight	$82

Best time to beat the crowds with an average 10% drop in price.

Most popular time to fly with an average 8% 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.