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.

$97 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

Thu, Jan 7 - Mon, Jan 11

10:26 pm - 10:20 amPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

10h 54m1 stop Denver Intl

6:20 pm - 12:34 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

7h 14m1 stop Denver Intl

$248Frontier

Thu, Dec 31 - Wed, Jan 6

8:23 am - 4:42 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

7h 19m1 stop Las Vegas Harry Reid Intl

6:20 pm - 12:34 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

7h 14m1 stop Denver Intl

$267Frontier

Sat, Dec 5 - Sat, Dec 12

10:31 am - 5:46 pmTUS Tucson-STL Lambert-St Louis

6h 15m1 stop Dallas/Fort Worth

5:00 am - 9:50 amSTL Lambert-St Louis-TUS Tucson

5h 50m1 stop Dallas/Fort Worth

$377American Airlines

Wed, Dec 23 - Tue, Jan 5

4:25 pm - 1:45 amTUS Tucson-STL Lambert-St Louis

8h 20m1 stop Las Vegas Harry Reid Intl

6:30 am - 10:50 amSTL Lambert-St Louis-TUS Tucson

5h 20m1 stop Denver Intl

$377Southwest

Wed, Dec 23 - Tue, Jan 5

8:07 pm - 5:06 amTUS Tucson-STL Lambert-St Louis

7h 59m1 stop San Francisco

5:06 pm - 11:15 pmSTL Lambert-St Louis-TUS Tucson

7h 09m1 stop Chicago O'Hare Intl

$377United Airlines

Tue, Dec 8 - Tue, Dec 15

12:17 pm - 9:28 pmTUS Tucson-STL Lambert-St Louis

8h 11m1 stop Salt Lake City

6:00 am - 1:53 pmSTL Lambert-St Louis-TUS Tucson

8h 53m1 stop Atlanta Hartsfield-Jackson

$377Delta

Tue, Dec 8 - Tue, Dec 15

12:17 pm - 9:28 pmTUS Tucson-STL Lambert-St Louis

8h 11m1 stop Salt Lake City

7:03 am - 1:53 pmSTL Lambert-St Louis-TUS Tucson

7h 50m1 stop Atlanta Hartsfield-Jackson

$377Delta

Sat, Dec 5 - Sat, Dec 12

6:05 am - 4:20 pmTUS Tucson-STL Lambert-St Louis

9h 15m2 stops Las Vegas Harry Reid Intl Omaha Eppley Airfield

5:25 pm - 9:40 pmSTL Lambert-St Louis-TUS Tucson

5h 15m1 stop Denver Intl

$382Southwest

Wed, Dec 23 - Tue, Jan 5

5:55 pm - 11:52 pmTUS Tucson-STL Lambert-St Louis

4h 57m1 stop Phoenix Sky Harbor Intl

10:20 am - 5:15 pmSTL Lambert-St Louis-TUS Tucson

7h 55m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl

$389American Airlines

Thu, Dec 3 - Tue, Dec 8

12:09 pm - 6:41 pmTUS Tucson-STL Lambert-St Louis

5h 32m1 stop Houston George Bush Intcntl

8:17 am - 3:11 pmSTL Lambert-St Louis-TUS Tucson

7h 54m1 stop San Francisco

$392United Airlines

Recent last minute flight deals from Arizona to St. Louis

Tue, Nov 17 - Mon, Nov 30

3:46 pm - 3:23 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

22h 37m1 stop Denver Intl

3:04 pm - 9:29 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

19h 25m1 stop Denver Intl

$368Frontier

Sat, Nov 14 - Wed, Nov 18

10:09 am - 7:14 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

8h 05m1 stop Denver Intl

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

5h 36m1 stop Denver Intl

$368Frontier

Tue, Nov 17 - Mon, Nov 30

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

3h 06mnonstop

7:58 am - 10:39 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 41mnonstop

$615American Airlines

Tue, Nov 17 - Mon, Nov 30

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

3h 06mnonstop

7:58 am - 10:39 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 41mnonstop

$625American Airlines

Sat, Nov 14 - Sat, Nov 14

6:00 am - 9:50 amPHX 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

$631Southwest

Sat, Nov 14 - Sat, Nov 14

6:00 am - 9:50 amPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 50mnonstop

12:15 pm - 6:00 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

6h 45m1 stop Chicago Midway

$641Southwest

Sat, Nov 14 - Sat, Nov 14

7:00 am - 2:13 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

6h 13m1 stop Houston George Bush Intcntl

5:34 pm - 11:40 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

7h 06m1 stop Chicago O'Hare Intl

$641United Airlines

Wed, Nov 11 - Tue, Nov 17

12:59 am - 9:20 amPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

7h 21m1 stop Minneapolis St Paul

5:22 pm - 12:24 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

8h 02m1 stop Minneapolis St Paul

$697Delta

Sat, Nov 14 - Sun, Nov 22

12:18 pm - 9:18 pmTUS Tucson-STL Lambert-St Louis

8h 00m1 stop Salt Lake City

2:20 pm - 10:36 pmSTL Lambert-St Louis-TUS Tucson

9h 16m1 stop Salt Lake City

$772Delta

Tue, Nov 17 - Tue, Nov 17

8:15 am - 3:43 pmTUS Tucson-STL Lambert-St Louis

6h 28m1 stop Chicago O'Hare Intl

5:34 pm - 11:15 pmSTL Lambert-St Louis-TUS Tucson

6h 41m1 stop Chicago O'Hare Intl

$951United Airlines

Recent direct flight deals from Arizona to St. Louis

Sat, Dec 5 - Tue, Dec 8

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

$399American Airlines

Sat, Dec 5 - Sat, Dec 12

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

$399American Airlines

Tue, Dec 1 - Wed, Dec 9

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

$399Southwest

Wed, Jan 20 - Wed, Jan 27

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

3h 00mnonstop

7:00 pm - 9:35 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 35mnonstop

$399Southwest

Sat, Dec 12 - Tue, Dec 15

9:45 am - 1:51 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

3h 06mnonstop

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

3h 30mnonstop

$399American Airlines

Sat, Dec 12 - Wed, Dec 16

6:05 pm - 9:55 pmPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 50mnonstop

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

3h 25mnonstop

$399Southwest

Wed, Dec 2 - Wed, Dec 9

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

2h 50mnonstop

8:35 am - 11:00 amSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 25mnonstop

$399Southwest

Tue, Dec 8 - Tue, Dec 15

6:15 pm - 10:10 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

$399Southwest

Wed, Jan 13 - Tue, Jan 19

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

3h 00mnonstop

7:00 pm - 9:35 pmSTL Lambert-St Louis-PHX Phoenix Sky Harbor Intl

3h 35mnonstop

$399Southwest

Tue, Dec 8 - Tue, Dec 15

5:45 am - 9:35 amPHX Phoenix Sky Harbor Intl-STL Lambert-St Louis

2h 50mnonstop

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

3h 25mnonstop

$409Southwest

Useful Info

Low season	January
High season	July
Cheapest flight	$97

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.