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.

$84 CHEAP FLIGHTS from Arizona to St. Louis

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Cheap Flights from Arizona to St. Louis

Cheap flights from Arizona to St. Louis with top airlines, updated regularly. Compare round-trip, one-way, direct and last-minute deals.

Round-trip

One-way

Last minute

Direct

Sun, Nov 22 - Wed, Nov 25

10:21 pm - 11:03 amPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

11h 42m1 stop Denver Intl

3:04 pm - 12:42 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

10h 38m1 stop Denver Intl

$271Frontier

Sat, Oct 31 - Fri, Nov 6

2:46 pm - 12:16 amPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

31h 30m2 stops Denver Intl Orlando

7:59 pm - 12:42 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

5h 43m1 stop Denver Intl

$275Frontier

Mon, Jan 25 - Wed, Jan 27

5:06 pm - 2:56 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

20h 50m2 stops San Diego Seattle/Tacoma Intl

7:02 pm - 12:29 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

6h 27m1 stop Denver Intl

$277Multiple Airlines

Sun, Nov 1 - Sat, Nov 14

12:40 pm - 7:14 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

29h 34m2 stops Vernal Regional Denver Intl

7:59 pm - 12:42 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

5h 43m1 stop Denver Intl

$308Multiple Airlines

Fri, Nov 13 - Mon, Nov 16

2:21 pm - 10:39 pmTUS Tucson-STL Lambert-St Louis

7h 18m1 stop Dallas/Fort Worth

8:00 am - 12:05 pmSTL Lambert-St Louis-TUS Tucson

5h 05m1 stop Phoenix Sky Harbor Intl

$355American Airlines

Thu, Nov 19 - Mon, Nov 23

3:41 pm - 12:01 amTUS Tucson-STL Lambert-St Louis

7h 20m1 stop Chicago O'Hare Intl

10:21 am - 4:15 pmSTL Lambert-St Louis-TUS Tucson

6h 54m1 stop Dallas/Fort Worth

$355American Airlines

Thu, Nov 12 - Tue, Dec 1

3:45 pm - 12:30 amTUS Tucson-STL Lambert-St Louis

7h 45m1 stop Los Angeles

5:05 am - 10:20 amSTL Lambert-St Louis-TUS Tucson

6h 15m1 stop Las Vegas Harry Reid Intl

$355Southwest

Thu, Nov 5 - Wed, Nov 11

6:30 am - 12:38 pmTUS Tucson-STL Lambert-St Louis

5h 08m1 stop Denver Intl

8:00 am - 3:27 pmSTL Lambert-St Louis-TUS Tucson

8h 27m1 stop San Francisco

$355United Airlines

Tue, Dec 8 - Mon, Dec 14

8:35 am - 12:30 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 55mnonstop

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

3h 25mnonstop

$357Southwest

Sun, Nov 22 - Fri, Nov 27

7:30 am - 2:13 pmTUS Tucson-STL Lambert-St Louis

5h 43m1 stop Houston George Bush Intcntl

6:15 am - 11:26 amSTL Lambert-St Louis-TUS Tucson

6h 11m1 stop Houston George Bush Intcntl

$365United Airlines

Tue, Oct 20 - Thu, Nov 12

3:29 pm - 3:24 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

21h 55m1 stop Denver Intl

1:28 pm - 6:27 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

5h 59m1 stop Las Vegas Harry Reid Intl

$369Frontier

Tue, Oct 20 - Thu, Nov 12

8:51 pm - 3:24 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

16h 33m1 stop Denver Intl

1:28 pm - 8:54 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

32h 26m2 stops Las Vegas Harry Reid Intl Denver Intl

$387Frontier

Tue, Oct 20 - Mon, Oct 26

8:51 pm - 3:24 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

16h 33m1 stop Denver Intl

1:30 pm - 6:33 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

7h 03m1 stop Las Vegas Harry Reid Intl

$405Frontier

Tue, Oct 20 - Thu, Nov 12

7:35 am - 12:25 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 50mnonstop

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

3h 30mnonstop

$479Southwest

Tue, Oct 20 - Thu, Nov 12

9:25 am - 5:45 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

6h 20m1 stop San Diego

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

3h 30mnonstop

$489Southwest

Sun, Oct 18 - Sun, Oct 25

10:12 pm - 11:13 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

23h 01m1 stop Orlando

12:16 pm - 11:15 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

24h 59m2 stops Las Vegas Harry Reid Intl Page

$514Multiple Airlines

Tue, Oct 20 - Thu, Oct 22

3:29 pm - 3:24 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

21h 55m1 stop Denver Intl

2:00 pm - 12:17 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

24h 17m3 stops Jonesboro Nashville Intl Las Vegas Harry Reid Intl

$579Multiple Airlines

Sun, Oct 18 - Mon, Oct 19

11:33 pm - 10:50 amPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

9h 17m1 stop Chicago O'Hare Intl

2:31 pm - 3:58 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 27mnonstop

$609American Airlines

Sat, Oct 17 - Sun, Oct 18

11:33 pm - 10:51 amPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

9h 18m1 stop Chicago O'Hare Intl

2:31 pm - 3:58 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 27mnonstop

$678American Airlines

Sat, Oct 17 - Mon, Oct 19

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

2h 50mnonstop

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

3h 20mnonstop

$692Southwest

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

$357American Airlines

Tue, Dec 15 - Wed, Dec 16

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

2h 56mnonstop

2:31 pm - 5:01 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 30mnonstop

$357American Airlines

Tue, Dec 8 - Mon, Dec 14

8:35 am - 12:30 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 55mnonstop

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

3h 25mnonstop

$357Southwest

Wed, Nov 4 - Wed, Nov 4

8:35 am - 12:30 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 55mnonstop

8:20 pm - 10:45 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 25mnonstop

$357Southwest

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

$357American Airlines

Wed, Nov 18 - Tue, Nov 24

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

3h 00mnonstop

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

3h 33mnonstop

$357American 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

$357American Airlines

Mon, Nov 23 - Mon, Dec 7

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

2h 45mnonstop

5:55 am - 8:20 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 25mnonstop

$357Southwest

Mon, Nov 9 - Fri, Nov 13

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

2h 45mnonstop

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

3h 20mnonstop

$357Southwest

Thu, Dec 17 - Mon, Jan 4

8:25 pm - 12:15 amPHX 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

$357Southwest

Low season	January
High season	July
Cheapest flight	$84

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.