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.

$102 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

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

7h 20m1 stop Chicago O'Hare Intl

7:58 am - 3:29 pmSTL Lambert-St Louis-TUS Tucson

8h 31m1 stop Phoenix Sky Harbor Intl

$257American Airlines

Thu, Nov 19 - Mon, Nov 23

1:13 pm - 9:59 pmTUS Tucson-STL Lambert-St Louis

7h 46m1 stop Dallas/Fort Worth

5:29 pm - 12:11 amSTL Lambert-St Louis-TUS Tucson

7h 42m1 stop Chicago O'Hare Intl

$257American Airlines

Tue, Nov 17 - Tue, Dec 1

3:10 pm - 9:10 pmTUS Tucson-STL Lambert-St Louis

5h 00m1 stop Denver Intl

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

6h 15m1 stop Las Vegas Harry Reid Intl

$257Southwest

Tue, Dec 1 - Sat, Dec 5

6:05 am - 3:35 pmTUS Tucson-STL Lambert-St Louis

8h 30m2 stops Las Vegas Harry Reid Intl Dallas Love Field

8:45 am - 3:40 pmSTL Lambert-St Louis-TUS Tucson

7h 55m1 stop Dallas Love Field

$262Southwest

Thu, Oct 29 - Wed, Nov 4

8:59 pm - 7:14 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

20h 15m1 stop Denver Intl

4:18 pm - 8:54 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

5h 36m1 stop Denver Intl

$267Frontier

Thu, Oct 29 - Sat, Oct 31

6:40 pm - 12:33 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

15h 53m1 stop Las Vegas Harry Reid Intl

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

5h 43m1 stop Denver Intl

$268Frontier

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

$291Multiple Airlines

Wed, Nov 11 - Fri, Nov 13

3:01 pm - 11:56 pmTUS Tucson-STL Lambert-St Louis

7h 55m1 stop Atlanta Hartsfield-Jackson

5:30 pm - 11:06 pmSTL Lambert-St Louis-TUS Tucson

6h 36m1 stop Atlanta Hartsfield-Jackson

$292Delta

Wed, Nov 11 - Fri, Nov 13

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

5h 29m1 stop Denver Intl

7:30 am - 3:50 pmSTL Lambert-St Louis-TUS Tucson

9h 20m2 stops Chicago O'Hare Intl Denver Intl

$321United Airlines

Tue, Feb 2 - Wed, Feb 3

6:30 am - 2:03 pmTUS Tucson-STL Lambert-St Louis

6h 33m1 stop Denver Intl

3:07 pm - 10:15 pmSTL Lambert-St Louis-TUS Tucson

8h 08m1 stop Houston George Bush Intcntl

$367United Airlines

Wed, Oct 14 - Wed, Nov 11

6:15 am - 3:24 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

7h 09m1 stop Denver Intl

4:18 pm - 8:54 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

5h 36m1 stop Denver Intl

$330Frontier

Wed, Oct 14 - Fri, Nov 13

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

23h 01m1 stop Orlando

12:14 pm - 11:55 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

12h 41m1 stop Dallas/Fort Worth

$340Frontier

Tue, Oct 13 - Tue, Oct 27

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

2h 50mnonstop

6:20 am - 7:40 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 20mnonstop

$440Southwest

Tue, Oct 13 - Tue, Oct 27

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

21h 55m1 stop Denver Intl

7:02 am - 3:10 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

10h 08m1 stop Seattle/Tacoma Intl

$446Multiple Airlines

Wed, Oct 14 - Wed, Nov 11

6:35 pm - 11:30 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 55mnonstop

5:05 am - 10:15 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

6h 10m1 stop Las Vegas Harry Reid Intl

$450Southwest

Wed, Oct 14 - Fri, Nov 13

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

$481American Airlines

Wed, Oct 14 - Wed, Nov 11

3:43 pm - 8:43 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

$481American Airlines

Tue, Oct 13 - Tue, Oct 27

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

16h 33m1 stop Denver Intl

7:20 pm - 7:54 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

26h 34m3 stops Jonesboro Nashville Intl Denver Intl

$524Multiple Airlines

Wed, Oct 14 - Fri, Oct 16

7:05 am - 6:43 pmTUS Tucson-STL Lambert-St Louis

9h 38m1 stop San Francisco

3:12 pm - 9:10 pmSTL Lambert-St Louis-TUS Tucson

7h 58m1 stop Houston George Bush Intcntl

$927United Airlines

Mon, Oct 12 - Wed, Oct 14

1:40 pm - 11:44 pmTUS Tucson-STL Lambert-St Louis

8h 04m1 stop Denver Intl

8:00 am - 4:57 pmSTL Lambert-St Louis-TUS Tucson

10h 57m2 stops Chicago O'Hare Intl Denver Intl

$932United 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

$279American 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

$279American Airlines

Tue, Nov 17 - Tue, Dec 1

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

2h 55mnonstop

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

3h 25mnonstop

$279Southwest

Thu, Feb 18 - Tue, Feb 23

6:45 pm - 10:35 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 50mnonstop

6:55 pm - 9:20 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 25mnonstop

$279Southwest

Sat, Nov 7 - Sat, Nov 14

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

3h 06mnonstop

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

3h 27mnonstop

$279American Airlines

Thu, Nov 5 - Tue, Nov 10

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

$279American Airlines

Wed, Feb 3 - Mon, Feb 8

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

3h 08mnonstop

8:00 am - 10:38 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 38mnonstop

$279American 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

$279American Airlines

Wed, Nov 4 - Sat, Nov 7

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

2h 50mnonstop

2:55 pm - 5:15 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 20mnonstop

$279Southwest

Wed, Dec 16 - Wed, Dec 23

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

2h 55mnonstop

9:45 pm - 12:10 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 25mnonstop

$279Southwest

Low season	January
High season	July
Cheapest flight	$102

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

Most popular time to fly with an average 7% 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.