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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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

Thu, Nov 19 - Mon, Nov 23

5:13 am - 1:58 pmTUS Tucson-STL Lambert-St Louis

7h 45m1 stop Dallas/Fort Worth

5:00 am - 10:03 amSTL Lambert-St Louis-TUS Tucson

6h 03m1 stop Dallas/Fort Worth

$269American Airlines

Sat, Jan 9 - Tue, Jan 12

6:42 am - 1:38 pmTUS Tucson-STL Lambert-St Louis

5h 56m1 stop Phoenix Sky Harbor Intl

3:45 pm - 9:50 pmSTL Lambert-St Louis-TUS Tucson

7h 05m1 stop Dallas/Fort Worth

$269American Airlines

Tue, Jan 12 - Tue, Jan 19

7:00 am - 2:43 pmTUS Tucson-STL Lambert-St Louis

6h 43m1 stop Atlanta Hartsfield-Jackson

7:20 am - 2:54 pmSTL Lambert-St Louis-TUS Tucson

8h 34m1 stop Atlanta Hartsfield-Jackson

$269Delta

Sat, Jan 9 - Tue, Jan 12

7:25 am - 4:05 pmTUS Tucson-STL Lambert-St Louis

7h 40m2 stops San Diego Las Vegas Harry Reid Intl

6:35 am - 10:50 amSTL Lambert-St Louis-TUS Tucson

5h 15m1 stop Denver Intl

$274Southwest

Tue, Nov 10 - Tue, Dec 1

7:10 am - 3:35 pmTUS Tucson-STL Lambert-St Louis

7h 25m2 stops Phoenix Sky Harbor Intl Dallas Love Field

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

6h 15m1 stop Las Vegas Harry Reid Intl

$274Southwest

Fri, Dec 18 - Sun, Dec 20

10:09 pm - 3:26 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

16h 17m1 stop Denver Intl

5:37 pm - 2:22 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

21h 45m1 stop Las Vegas Harry Reid Intl

$293Frontier

Fri, Jan 22 - Mon, Jan 25

9:38 pm - 10:20 amPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

11h 42m1 stop Denver Intl

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

6h 27m1 stop Denver Intl

$294Frontier

Thu, Nov 12 - Mon, Nov 16

6:30 am - 3:43 pmTUS Tucson-STL Lambert-St Louis

8h 13m2 stops Denver Intl Chicago O'Hare Intl

4:39 pm - 9:34 pmSTL Lambert-St Louis-TUS Tucson

5h 55m1 stop Denver Intl

$311United Airlines

Thu, Nov 19 - Mon, Nov 23

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

5h 08m1 stop Denver Intl

8:30 am - 6:19 pmSTL Lambert-St Louis-TUS Tucson

10h 49m2 stops Chicago O'Hare Intl Denver Intl

$384United Airlines

Thu, Nov 19 - Sun, Nov 22

3:00 pm - 11:56 pmTUS Tucson-STL Lambert-St Louis

7h 56m1 stop Atlanta Hartsfield-Jackson

6:13 am - 1:01 pmSTL Lambert-St Louis-TUS Tucson

7h 48m1 stop Minneapolis St Paul

$385Delta

Thu, Oct 22 - Sat, Oct 31

3:29 pm - 7:15 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

25h 46m1 stop Denver Intl

7:59 pm - 11:42 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

5h 43m1 stop Denver Intl

$356Frontier

Sat, Oct 24 - Mon, Oct 26

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

10h 42m1 stop Denver Intl

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

21h 17m1 stop Denver Intl

$376Frontier

Sat, Oct 24 - Thu, Oct 29

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

7h 42m1 stop Denver Intl

1:28 pm - 11:15 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

23h 47m2 stops Las Vegas Harry Reid Intl Page

$522Multiple Airlines

Sat, Oct 24 - Thu, Oct 29

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

7h 42m1 stop Denver Intl

2:00 pm - 12:30 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

24h 30m3 stops Jonesboro Nashville Intl Las Vegas Harry Reid Intl

$525Multiple Airlines

Sat, Oct 24 - Tue, Oct 27

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

3h 02mnonstop

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

3h 35mnonstop

$610American Airlines

Sat, Oct 24 - Tue, Oct 27

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

3h 00mnonstop

11:32 am - 5:15 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

7h 43m1 stop Chicago O'Hare Intl

$620American Airlines

Wed, Oct 21 - Wed, Oct 21

7:35 am - 12:25 pmPHX 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

$621Southwest

Wed, Oct 21 - Wed, Oct 21

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

2h 50mnonstop

6:10 pm - 9:30 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

5h 20m1 stop Denver Intl

$631Southwest

Wed, Oct 21 - Wed, Oct 21

6:00 am - 12:40 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

4h 40m1 stop Denver Intl

3:12 pm - 9:00 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

7h 48m1 stop Houston George Bush Intcntl

$635United Airlines

Mon, Oct 26 - Wed, Oct 28

9:42 am - 4:57 pmTUS Tucson-STL Lambert-St Louis

5h 15m1 stop Denver Intl

1:40 pm - 5:19 pmSTL Lambert-St Louis-TUS Tucson

5h 39m1 stop Denver Intl

$947United Airlines

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

$291American Airlines

Thu, Nov 19 - Tue, Dec 1

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

3h 02mnonstop

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

3h 33mnonstop

$291American Airlines

Sat, Jan 9 - Wed, Jan 13

5:40 pm - 9:25 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 45mnonstop

5:45 am - 8:15 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 30mnonstop

$291Southwest

Sat, Dec 19 - Sat, Dec 19

5:10 am - 9:00 amPHX 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

$291Southwest

Tue, Nov 10 - Tue, Dec 1

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

$291American Airlines

Thu, Dec 10 - Mon, Dec 14

9:30 am - 1:36 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

$291American Airlines

Thu, Nov 19 - Mon, Nov 23

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

$291American Airlines

Sat, Dec 12 - Mon, Jan 11

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

2h 56mnonstop

2:28 pm - 5:03 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 35mnonstop

$291American Airlines

Tue, Dec 1 - Thu, Dec 3

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

2h 53mnonstop

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

3h 39mnonstop

$291American Airlines

Mon, Dec 21 - Tue, Jan 5

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

$291American Airlines

Low season	January
High season	July
Cheapest flight	$82

Best time to beat the crowds with an average 8% 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.