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Cheap flights from Phoenix to St. Louis from $53

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Phoenix to St. Louis departing on 1/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Phoenix to St. Louis

Cheap round-trip flights

These are some of the best round-trip flight deals from Phoenix to St. Louis that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Phoenix to St. Louis.

Cheap last minute flights

Planning a quick getaway from Phoenix to St. Louis? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to St. Louis, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Phoenix to St. Louis

Find recent round-trip train or bus tickets from Phoenix to St. Louis.

All round-trip flight deals to St. Louis

The cheapest plane tickets to St. Louis found on KAYAK recently.
9:50 pm - 8:13 amPHX-STL
9h 23m1 stop
9:46 pm - 7:36 amSTL-PHX
10h 50m1 stop
$108Frontier
Find Deal
Thu, Dec 12 - Tue, Dec 17
9:50 pm - 11:10 amPHX-STL
12h 20m1 stop
6:46 pm - 12:20 amSTL-PHX
6h 34m1 stop
$109Frontier
Find Deal
Sat, Jan 4 - Sat, Jan 11
9:30 am - 1:32 pmPHX-STL
3h 02mnonstop
7:24 am - 9:55 amSTL-PHX
3h 31mnonstop
$277American Airlines
Find Deal
Wed, Dec 18 - Wed, Jan 1
6:35 pm - 10:25 pmPHX-STL
2h 50mnonstop
11:00 am - 3:25 pmSTL-PHX
5h 25m1 stop
$287Southwest
Find Deal
Tue, Feb 11 - Tue, Feb 25
7:58 pm - 11:54 pmPHX-STL
2h 56mnonstop
2:29 pm - 5:04 pmSTL-PHX
3h 35mnonstop
$292American Airlines
Find Deal
Thu, Dec 12 - Wed, Dec 18
12:55 am - 10:40 amPHX-STL
8h 45m1 stop
6:00 am - 1:50 pmSTL-PHX
8h 50m1 stop
$326Delta
Find Deal
Wed, Dec 11 - Mon, Dec 16
12:55 am - 10:40 amPHX-STL
8h 45m1 stop
6:00 am - 1:50 pmSTL-PHX
8h 50m1 stop
$346Delta
Find Deal
Wed, Dec 11 - Sun, Dec 15
11:59 pm - 10:47 amPHX-STL
9h 48m2 stops
6:00 am - 12:08 pmSTL-PHX
7h 08m1 stop
$381United Airlines
Find Deal
Wed, Dec 18 - Wed, Jan 1
8:55 pm - 12:45 amPHX-STL
2h 50mnonstop
9:35 am - 1:40 pmSTL-PHX
5h 05m1 stop
$384Southwest
Find Deal
Thu, Feb 27 - Sun, Mar 2
3:15 pm - 10:13 pmPHX-STL
5h 58m1 stop
9:44 am - 6:08 pmSTL-PHX
9h 24m2 stops
$416United Airlines
Find Deal
Wed, Dec 11 - Sun, Jan 12
1:11 pm - 7:34 pmPHX-STL
5h 23m1 stop
$53Frontier
Find Deal
Thu, Jan 9
8:52 am - 5:43 pmPHX-STL
7h 51m1 stop
$54Frontier
Find Deal
Wed, Feb 12
7:58 pm - 11:57 pmPHX-STL
2h 59mnonstop
$139American Airlines
Find Deal
Tue, Feb 4
6:30 pm - 1:05 amPHX-STL
5h 35m1 stop
$148Delta
Find Deal
Wed, Dec 18
7:00 am - 3:47 pmPHX-STL
7h 47m2 stops
$153United Airlines
Find Deal
Wed, Dec 25
7:58 pm - 11:57 pmPHX-STL
2h 59mnonstop
$154American Airlines
Find Deal
Sat, Jan 11
7:15 am - 2:54 pmPHX-STL
6h 39m1 stop
$163Delta
Find Deal
Sat, Jan 11
7:00 am - 3:47 pmPHX-STL
7h 47m2 stops
$168United Airlines
Find Deal
Tue, Dec 24
10:30 am - 7:45 pmPHX-STL
8h 15m2 stops
$178Southwest
Find Deal
Sat, Jan 11
12:15 pm - 6:25 pmPHX-STL
4h 10m1 stop
$230Southwest
Find Deal
Tue, Mar 25
9:16 am - 12:06 amPHX-STL
13h 50m1 stop
6:46 pm - 11:48 amSTL-PHX
18h 02m1 stop
$228Frontier
Find Deal
Mon, Nov 25 - Sat, Dec 7
12:49 pm - 12:06 amPHX-STL
10h 17m1 stop
1:34 pm - 9:18 pmSTL-PHX
8h 44m1 stop
$298Frontier
Find Deal
Fri, Nov 22 - Sun, Nov 24
12:59 am - 8:49 amPHX-STL
6h 50m1 stop
7:30 am - 10:00 amSTL-PHX
3h 30mnonstop
$633American Airlines
Find Deal
Tue, Nov 26 - Fri, Nov 29
12:45 am - 9:29 amPHX-STL
7h 44m1 stop
5:31 pm - 10:24 pmSTL-PHX
5h 53m1 stop
$642American Airlines
Find Deal
Tue, Nov 26 - Fri, Nov 29
9:07 pm - 1:27 pmPHX-STL
15h 20m2 stops
5:38 pm - 12:19 amSTL-PHX
7h 41m1 stop
Sat, Nov 23 - Mon, Nov 25
8:43 pm - 8:50 amPHX-STL
35h 07m3 stops
1:00 pm - 7:48 pmSTL-PHX
31h 48m3 stops
Sun, Nov 24 - Tue, Nov 26
5:10 am - 3:39 pmPHX-STL
9h 29m2 stops
7:00 am - 7:34 pmSTL-PHX
13h 34m1 stop
$716United Airlines
Find Deal
Tue, Nov 26 - Wed, Dec 4
10:50 am - 4:32 pmPHX-STL
4h 42m1 stop
6:30 am - 6:16 pmSTL-PHX
12h 46m2 stops
$730United Airlines
Find Deal
Mon, Nov 25 - Sat, Dec 7
12:40 pm - 4:30 pmPHX-STL
2h 50mnonstop
9:45 am - 1:50 pmSTL-PHX
5h 05m1 stop
$843Southwest
Find Deal
Mon, Nov 25 - Wed, Nov 27
5:50 pm - 9:40 pmPHX-STL
2h 50mnonstop
9:55 am - 2:00 pmSTL-PHX
5h 05m1 stop
$883Southwest
Find Deal
Fri, Nov 22 - Sun, Nov 24
9:30 am - 1:32 pmPHX-STL
3h 02mnonstop
7:24 am - 9:55 amSTL-PHX
3h 31mnonstop
$277American Airlines
Find Deal
Wed, Dec 18 - Wed, Jan 1
7:58 pm - 11:54 pmPHX-STL
2h 56mnonstop
2:29 pm - 5:04 pmSTL-PHX
3h 35mnonstop
$292American Airlines
Find Deal
Thu, Dec 12 - Wed, Dec 18
7:58 pm - 11:54 pmPHX-STL
2h 56mnonstop
7:20 am - 9:56 amSTL-PHX
3h 36mnonstop
$307American Airlines
Find Deal
Thu, Dec 12 - Mon, Dec 16
7:58 pm - 11:54 pmPHX-STL
2h 56mnonstop
2:27 pm - 4:52 pmSTL-PHX
3h 25mnonstop
$363American Airlines
Find Deal
Wed, Dec 11 - Sun, Jan 12
8:00 pm - 12:06 amPHX-STL
3h 06mnonstop
6:44 am - 9:24 amSTL-PHX
3h 40mnonstop
$371American Airlines
Find Deal
Sun, Dec 22 - Wed, Jan 22
7:55 pm - 11:59 pmPHX-STL
3h 04mnonstop
2:27 pm - 4:52 pmSTL-PHX
3h 25mnonstop
$378American Airlines
Find Deal
Thu, Jan 23 - Sun, Jan 26
9:35 am - 1:37 pmPHX-STL
3h 02mnonstop
6:44 am - 9:24 amSTL-PHX
3h 40mnonstop
$380American Airlines
Find Deal
Sat, Jan 4 - Sat, Jan 11
6:55 am - 10:45 amPHX-STL
2h 50mnonstop
5:45 am - 7:15 amSTL-PHX
3h 30mnonstop
$384Southwest
Find Deal
Wed, Mar 5 - Sun, Mar 9
8:00 pm - 12:06 amPHX-STL
3h 06mnonstop
6:44 am - 9:24 amSTL-PHX
3h 40mnonstop
$386American Airlines
Find Deal
Thu, Dec 19 - Sun, Jan 19
5:30 am - 10:25 amPHX-STL
2h 55mnonstop
7:05 am - 8:25 amSTL-PHX
3h 20mnonstop
$450Southwest
Find Deal
Thu, Apr 10 - Sun, Apr 13

Frontier flights from Phoenix to St. Louis

Our best Frontier deals on Phoenix to St. Louis flight tickets
Frontier
Dec 12
PHX9:50 pmPhoenix Sky Harbor Intl
9h 23m
1 stop
STL8:13 amLambert-St Louis
Dec 17
STL9:46 pmLambert-St Louis
10h 50m
1 stop
PHX7:36 amPhoenix Sky Harbor Intl
Frontier
Jan 4
PHX9:50 pmPhoenix Sky Harbor Intl
12h 20m
1 stop
STL11:10 amLambert-St Louis
Jan 11
STL6:46 pmLambert-St Louis
6h 34m
1 stop
PHX12:20 amPhoenix Sky Harbor Intl
Frontier
Jan 4
PHX9:50 pmPhoenix Sky Harbor Intl
12h 20m
1 stop
STL11:10 amLambert-St Louis
Jan 11
STL6:46 pmLambert-St Louis
6h 34m
1 stop
PHX12:20 amPhoenix Sky Harbor Intl

American Airlines flights from Phoenix to St. Louis

Our best American Airlines deals on Phoenix to St. Louis flight tickets
American Airlines
Dec 18
PHX9:30 amPhoenix Sky Harbor Intl
3h 02m
STL1:32 pmLambert-St Louis
Jan 1
STL7:24 amLambert-St Louis
3h 31m
PHX9:55 amPhoenix Sky Harbor Intl
American Airlines
Dec 12
PHX7:58 pmPhoenix Sky Harbor Intl
2h 56m
STL11:54 pmLambert-St Louis
Dec 18
STL2:29 pmLambert-St Louis
3h 35m
PHX5:04 pmPhoenix Sky Harbor Intl
American Airlines
Dec 11
PHX12:45 amPhoenix Sky Harbor Intl
8h 00m
1 stop
STL9:45 amLambert-St Louis
Dec 18
STL2:29 pmLambert-St Louis
3h 35m
PHX5:04 pmPhoenix Sky Harbor Intl

See travel insights to St. Louis from

How to get the cheapest flight ticket from Phoenix to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly from Phoenix to St. Louis?

June. The cheapest time of year to fly to St. Louis from Phoenix is June. Most expensive is December

What is the cheapest day to depart Phoenix for St. Louis?

Wednesday. The cheapest day of the week is typically Wednesday. The most expensive is typically Sunday

When is the cheapest time to fly from Phoenix to St. Louis?

In the afternoon. Phoenix to St. Louis flights are approximately 40% more expensive at noon than in the afternoon

What is the cheapest Phoenix to St. Louis flight route?

Phoenix Sky Harbor Intl - Lambert-St Louis. Fly from Phoenix Sky Harbor Intl to Lambert-St Louis for the best Phoenix - St. Louis flight prices

How far in advance should you book Phoenix to St. Louis flights?

27 days before. The cheapest time to buy a flight from Phoenix to St. Louis is approximately 27 days to departure

Can stopping save me money on Phoenix to St. Louis flights?

You could potentially save up to 61% on your flight if you consider stops on a Phoenix to St. Louis flight.

Cheap Phoenix to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Phoenix to St. Louis

Best Price Found

$53

Fastest flight time

2h 48m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Phoenix in the past 72 hours is $53. The best round-trip flight deal from Phoenix to St. Louis found on momondo in the last 72 hours is $108.
The fastest flight from Phoenix to St. Louis takes 2h 48m
Direct flights go from Phoenix to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

  • How far is Phoenix to Lambert-St Louis by plane?

    The distance between Phoenix and Lambert-St Louis is about 1269.1 mi. Flights usually cover this in 2h 48m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Phoenix to Lambert-St Louis Airport?

    Prices for flights from Phoenix to Lambert-St Louis Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Phoenix to Lambert-St Louis Airport?

  • How old do you have to be to fly from Phoenix to Lambert-St Louis Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Phoenix to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.


Best airlines flying from Phoenix to St. Louis

Compare and see reviews for airlines that fly from Phoenix to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $78Free CancellationRating
6.1
3,539 reviews
Search Frontier flights
American AirlinesPriceFrom $131Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $216Free CancellationRating
8.0
8,758 reviews
Search Delta flights
SouthwestPriceFrom $262Free CancellationRating
8.1
5,015 reviews
Search Southwest flights
United AirlinesPriceFrom $273Free CancellationRating
7.4
9,172 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Phoenix to St. Louis?

Finding the right flight to St. Louis from Phoenix is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to St. Louis quick and easy, saving you time and money.

Can I find flights from Phoenix to St. Louis with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to St. Louis from Phoenix with this policy.

How can momondo help me find flights from Phoenix to St. Louis?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Phoenix to St. Louis.

I’m not ready to book a flight from Phoenix to St. Louis right now. Can momondo alert me if prices change?

Price alerts on flights to St. Louis from Phoenix are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.


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