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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 11/20. 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.
5:14 pm - 11:54 pmPHX-STL
5h 40m1 stop
5:37 pm - 10:00 pmSTL-PHX
5h 23m1 stop
$106Frontier
Find Deal
Wed, Nov 6 - Tue, Nov 12
9:50 pm - 8:13 amPHX-STL
9h 23m1 stop
6:46 pm - 12:20 amSTL-PHX
6h 34m1 stop
$108Frontier
Find Deal
Thu, Dec 5 - Mon, Dec 9
9:30 am - 1:33 pmPHX-STL
3h 03mnonstop
7:20 am - 9:56 amSTL-PHX
3h 36mnonstop
$275American Airlines
Find Deal
Fri, Dec 13 - Tue, Dec 17
10:35 am - 2:25 pmPHX-STL
2h 50mnonstop
8:00 am - 1:30 pmSTL-PHX
6h 30m1 stop
$281Southwest
Find Deal
Wed, Nov 13 - Tue, Nov 19
11:35 am - 10:33 pmPHX-STL
9h 58m1 stop
7:20 am - 9:56 amSTL-PHX
3h 36mnonstop
$289American Airlines
Find Deal
Fri, Dec 13 - Mon, Dec 16
12:55 am - 10:40 amPHX-STL
8h 45m1 stop
7:20 am - 1:30 pmSTL-PHX
7h 10m1 stop
$294Delta
Find Deal
Thu, Dec 12 - Tue, Dec 17
7:10 pm - 11:00 pmPHX-STL
2h 50mnonstop
10:55 am - 2:30 pmSTL-PHX
4h 35m1 stop
$296Southwest
Find Deal
Wed, Dec 4 - Wed, Dec 11
12:55 am - 10:30 amPHX-STL
8h 35m1 stop
7:55 am - 1:29 pmSTL-PHX
6h 34m1 stop
$309Delta
Find Deal
Fri, Nov 8 - Tue, Nov 12
8:41 pm - 10:27 amPHX-STL
12h 46m2 stops
7:09 am - 2:06 pmSTL-PHX
7h 57m1 stop
$375United Airlines
Find Deal
Wed, Nov 13 - Tue, Nov 19
11:59 pm - 11:10 amPHX-STL
10h 11m1 stop
6:30 am - 3:25 pmSTL-PHX
9h 55m2 stops
$379United Airlines
Find Deal
Tue, Nov 12 - Mon, Nov 18
5:14 pm - 11:54 pmPHX-STL
5h 40m1 stop
$53Frontier
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Wed, Nov 20
5:26 pm - 11:59 pmPHX-STL
5h 33m1 stop
$54Frontier
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Mon, Nov 18
7:58 pm - 11:56 pmPHX-STL
2h 58mnonstop
$138American Airlines
Find Deal
Wed, Nov 20
9:30 am - 1:33 pmPHX-STL
3h 03mnonstop
$141American Airlines
Find Deal
Sun, Dec 15
7:00 am - 12:43 pmPHX-STL
4h 43m1 stop
$147United Airlines
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Sat, Dec 7
6:50 am - 3:55 pmPHX-STL
8h 05m2 stops
$167Southwest
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Sat, Dec 7
6:40 am - 1:21 pmPHX-STL
5h 41m1 stop
$168Delta
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Tue, Jan 21
1:15 pm - 8:25 pmPHX-STL
6h 10m2 stops
$173Southwest
Find Deal
Sat, Jan 25
6:30 am - 4:56 pmPHX-STL
9h 26m1 stop
$187United Airlines
Find Deal
Sun, Nov 10
1:10 pm - 10:06 pmPHX-STL
7h 56m1 stop
$193Delta
Find Deal
Mon, Dec 23
9:29 pm - 11:47 pmPHX-STL
24h 18m1 stop
10:31 pm - 10:13 amSTL-PHX
13h 42m1 stop
$305Frontier
Find Deal
Thu, Oct 24 - Thu, Oct 31
9:29 pm - 11:47 pmPHX-STL
24h 18m1 stop
3:51 pm - 8:17 pmSTL-PHX
6h 26m1 stop
$308Frontier
Find Deal
Thu, Oct 24 - Mon, Oct 28
8:50 am - 4:22 pmPHX-STL
5h 32m1 stop
4:55 pm - 9:59 pmSTL-PHX
7h 04m1 stop
$650United Airlines
Find Deal
Tue, Oct 22 - Wed, Oct 23
5:30 am - 10:25 amPHX-STL
2h 55mnonstop
8:15 pm - 9:35 pmSTL-PHX
3h 20mnonstop
$693Southwest
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Fri, Oct 25 - Tue, Oct 29
12:55 am - 10:30 amPHX-STL
7h 35m1 stop
7:55 am - 1:28 pmSTL-PHX
6h 33m1 stop
$701Delta
Find Deal
Sat, Oct 26 - Sun, Nov 3
7:35 pm - 12:25 amPHX-STL
2h 50mnonstop
8:45 pm - 12:35 amSTL-PHX
5h 50m1 stop
$702Southwest
Find Deal
Fri, Oct 25 - Sun, Oct 27
6:00 am - 3:59 pmPHX-STL
7h 59m2 stops
8:40 am - 8:19 pmSTL-PHX
13h 39m1 stop
$730United Airlines
Find Deal
Thu, Oct 24 - Tue, Oct 29
8:55 am - 2:00 pmPHX-STL
3h 05mnonstop
7:14 am - 8:46 amSTL-PHX
3h 32mnonstop
$732American Airlines
Find Deal
Thu, Oct 24 - Mon, Oct 28
12:55 am - 10:30 amPHX-STL
7h 35m1 stop
7:55 am - 12:23 pmSTL-PHX
6h 28m1 stop
$739Delta
Find Deal
Wed, Oct 23 - Tue, Oct 29
8:55 am - 2:00 pmPHX-STL
3h 05mnonstop
9:31 am - 12:59 pmSTL-PHX
5h 28m1 stop
$742American Airlines
Find Deal
Thu, Oct 24 - Tue, Oct 29
9:30 am - 1:33 pmPHX-STL
3h 03mnonstop
7:20 am - 9:56 amSTL-PHX
3h 36mnonstop
$275American Airlines
Find Deal
Fri, Dec 13 - Mon, Dec 16
9:40 am - 1:44 pmPHX-STL
3h 04mnonstop
7:30 am - 10:00 amSTL-PHX
3h 30mnonstop
$290American Airlines
Find Deal
Wed, Nov 6 - Sun, Nov 10
7:58 pm - 11:54 pmPHX-STL
2h 56mnonstop
7:15 am - 9:55 amSTL-PHX
3h 40mnonstop
$296American Airlines
Find Deal
Wed, Dec 11 - Sun, Jan 12
7:59 pm - 11:57 pmPHX-STL
2h 58mnonstop
7:30 am - 10:00 amSTL-PHX
3h 30mnonstop
$306American Airlines
Find Deal
Tue, Nov 26 - Tue, Dec 3
7:58 pm - 11:58 pmPHX-STL
3h 00mnonstop
7:15 am - 9:40 amSTL-PHX
3h 25mnonstop
$317American Airlines
Find Deal
Sat, Jan 18 - Mon, Jan 27
7:58 pm - 11:56 pmPHX-STL
2h 58mnonstop
7:30 am - 10:00 amSTL-PHX
3h 30mnonstop
$336American Airlines
Find Deal
Wed, Nov 20 - Tue, Nov 26
9:30 am - 1:33 pmPHX-STL
3h 03mnonstop
7:24 am - 9:55 amSTL-PHX
3h 31mnonstop
$362American Airlines
Find Deal
Sun, Dec 15 - Fri, Dec 20
7:59 pm - 11:57 pmPHX-STL
2h 58mnonstop
7:30 am - 10:00 amSTL-PHX
3h 30mnonstop
$367American Airlines
Find Deal
Wed, Nov 27 - Sat, Nov 30
8:50 pm - 12:40 amPHX-STL
2h 50mnonstop
11:40 am - 2:05 pmSTL-PHX
3h 25mnonstop
$374Southwest
Find Deal
Sun, Nov 10 - Sat, Nov 16
8:50 pm - 12:40 amPHX-STL
2h 50mnonstop
5:10 am - 7:45 amSTL-PHX
3h 35mnonstop
$460Southwest
Find Deal
Mon, Nov 25 - Sun, Dec 1

Frontier flights from Phoenix to St. Louis

Our best Frontier deals on Phoenix to St. Louis flight tickets
Frontier
Nov 6
PHX5:14 pmPhoenix Sky Harbor Intl
5h 40m
1 stop
STL11:54 pmLambert-St Louis
Nov 12
STL5:37 pmLambert-St Louis
5h 23m
1 stop
PHX10:00 pmPhoenix Sky Harbor Intl
Frontier
Dec 5
PHX9:50 pmPhoenix Sky Harbor Intl
9h 23m
1 stop
STL8:13 amLambert-St Louis
Dec 9
STL6:46 pmLambert-St Louis
6h 34m
1 stop
PHX12:20 amPhoenix Sky Harbor Intl
Frontier
Nov 9
PHX9:55 pmPhoenix Sky Harbor Intl
25h 18m
1 stop
STL12:13 amLambert-St Louis
Nov 11
STL10:59 pmLambert-St Louis
13h 50m
1 stop
PHX11:49 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 13
PHX9:30 amPhoenix Sky Harbor Intl
3h 03m
STL1:33 pmLambert-St Louis
Dec 17
STL7:20 amLambert-St Louis
3h 36m
PHX9:56 amPhoenix Sky Harbor Intl
American Airlines
Dec 13
PHX11:35 amPhoenix Sky Harbor Intl
9h 58m
1 stop
STL10:33 pmLambert-St Louis
Dec 16
STL7:20 amLambert-St Louis
3h 36m
PHX9:56 amPhoenix Sky Harbor Intl
American Airlines
Dec 12
PHX12:45 amPhoenix Sky Harbor Intl
8h 00m
1 stop
STL9:45 amLambert-St Louis
Dec 16
STL7:20 amLambert-St Louis
3h 36m
PHX9:56 amPhoenix Sky Harbor Intl

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 42% more expensive at noon than in the afternoon

What is the cheapest airline that flies to St. Louis from Phoenix?

Frontier. Frontier, Delta, and American Airlines are the most popular carriers operating from Phoenix to St. Louis

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

How many flights depart from Phoenix to St. Louis on average per day?

11 flights are operational weekly from Phoenix to St. Louis as of October 2024. The most popular departure time for this route is 7:00PM, with 49% of flights per day taking off at noon.

How many flights depart from Phoenix to St. Louis on average per week?

As of October 2024, 77 flights take off from Phoenix and land in St. Louis each week. The most common flight departure day for this route is Tuesday, with 19% of weekly flights taking off on this day.

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 49m

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 $106.
The fastest flight from Phoenix to St. Louis takes 2h 49m
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 49m, 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
3,621 reviews
Search Frontier flights
American AirlinesPriceFrom $132Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $216Free CancellationRating
8.0
8,892 reviews
Search Delta flights
SouthwestPriceFrom $220Free CancellationRating
8.1
5,158 reviews
Search Southwest flights
United AirlinesPriceFrom $273Free CancellationRating
7.4
9,302 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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