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 10 - Fri, Oct 16

8:16 am - 6:57 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

8h 41m2 stops Las Vegas Harry Reid Intl Denver Intl

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

14h 10m1 stop Denver Intl

$279Frontier

Mon, Oct 26 - Mon, Nov 2

6:00 am - 7:15 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

11h 15m2 stops Salt Lake City Denver Intl

6:44 pm - 1:45 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

20h 01m2 stops Atlanta Hartsfield-Jackson Houston George Bush Intcntl

$280Frontier

Sat, Oct 17 - Tue, Oct 20

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

10h 42m1 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

$336Multiple Airlines

Sat, Oct 17 - Tue, Oct 20

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

10h 42m1 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

$336Multiple Airlines

Wed, Oct 28 - Wed, Nov 4

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

3h 02mnonstop

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

3h 27mnonstop

$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, Dec 10 - Thu, Dec 17

6:15 pm - 10:05 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 50mnonstop

7:20 pm - 9:40 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 20mnonstop

$337Southwest

Mon, Oct 26 - Mon, Nov 2

6:30 pm - 11:25 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 55mnonstop

5:05 am - 7:30 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 25mnonstop

$337Southwest

Wed, Oct 21 - Wed, Oct 28

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

$337United Airlines

Wed, Oct 21 - Wed, Oct 28

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

5h 02m1 stop Denver Intl

1:00 pm - 9:59 pmSTL Lambert-St Louis-PRC Prescott

10h 59m2 stops Washington, D.C. Dulles Intl Denver Intl

$347United Airlines

Recent last minute flight deals from Arizona to St. Louis

Sat, Sep 26 - Mon, Oct 26

8:30 am - 11:17 amPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

24h 47m1 stop Las Vegas Harry Reid Intl

8:00 pm - 3:17 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

21h 17m1 stop Denver Intl

$290Frontier

Sat, Sep 26 - Mon, Oct 26

8:30 am - 11:17 amPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

24h 47m1 stop Las Vegas Harry Reid Intl

6:35 pm - 12:45 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

20h 10m2 stops Atlanta Hartsfield-Jackson Houston George Bush Intcntl

$340Frontier

Mon, Sep 28 - Sat, Oct 3

8:00 am - 11:32 amPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

25h 32m1 stop Las Vegas Harry Reid Intl

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

13h 50m1 stop Denver Intl

$408Frontier

Sat, Sep 26 - Mon, Oct 26

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

$462American Airlines

Sat, Sep 26 - Mon, Oct 26

8:59 am - 6:04 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

7h 05m1 stop Dallas/Fort Worth

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

3h 35mnonstop

$472American Airlines

Fri, Sep 25 - Wed, Sep 30

3:05 pm - 11:15 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

6h 10m2 stops Albuquerque Denver Intl

2:45 pm - 6:55 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

6h 10m2 stops Dallas Love Field El Paso

$677Southwest

Fri, Sep 25 - Fri, Sep 25

5:00 am - 9:50 amPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 50mnonstop

6:00 pm - 7:15 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 15mnonstop

$693Southwest

Fri, Sep 25 - Fri, Sep 25

6:00 am - 2:10 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

6h 10m1 stop Houston George Bush Intcntl

5:36 pm - 10:24 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

6h 48m1 stop Chicago O'Hare Intl

$703United Airlines

Fri, Sep 25 - Mon, Sep 28

3:30 pm - 11:44 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

6h 14m1 stop Denver Intl

4:39 pm - 8:49 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

6h 10m1 stop Denver Intl

$713United Airlines

Tue, Sep 29 - Tue, Oct 6

4:31 pm - 12:44 amTUS Tucson-STL Lambert-St Louis

6h 13m1 stop Salt Lake City

6:00 am - 12:16 pmSTL Lambert-St Louis-TUS Tucson

8h 16m1 stop Atlanta Hartsfield-Jackson

$787Delta

Recent direct flight deals from Arizona to St. Louis

Wed, Oct 14 - Wed, Oct 21

8:34 am - 1:44 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

3h 10mnonstop

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

3h 35mnonstop

$337American Airlines

Thu, Nov 12 - Mon, Nov 16

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, Oct 15 - Tue, Oct 20

5:10 am - 10:00 amPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 50mnonstop

4:55 pm - 6:15 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 20mnonstop

$337Southwest

Thu, Oct 22 - Mon, Oct 26

5:10 am - 10:00 amPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 50mnonstop

5:05 am - 6:30 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 25mnonstop

$337Southwest

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

Wed, Oct 21 - Mon, Oct 26

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

3h 00mnonstop

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

3h 34mnonstop

$337American Airlines

Thu, Dec 31 - Thu, Jan 7

7:57 pm - 11:53 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 56mnonstop

1:46 pm - 4:27 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 41mnonstop

$337American Airlines

Wed, Dec 16 - Wed, Dec 23

9:37 am - 1:43 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

3h 06mnonstop

2:45 pm - 5:09 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 24mnonstop

$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

Thu, Dec 10 - Thu, Dec 17

6:15 pm - 10:05 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 50mnonstop

7:20 pm - 9:40 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 20mnonstop

$337Southwest

Useful Info

Low season	January
High season	July
Cheapest flight	$82

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