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Cheap flights from Phoenix Sky Harbor Intl Airport to St. Louis from $104

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 Sky Harbor Intl Airport to St. Louis departing on 12/27. 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 Sky Harbor Intl Airport to St. Louis

Cheap round-trip flights

These are some of the best round-trip flight deals from Phoenix Sky Harbor Intl Airport 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 Sky Harbor Intl Airport to St. Louis.

Cheap last minute flights

Planning a quick getaway from Phoenix Sky Harbor Intl Airport 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 Sky Harbor Intl Airport to St. Louis

Find recent round-trip train or bus tickets from Phoenix Sky Harbor Intl Airport to St. Louis.

All round-trip flight deals to St. Louis

The cheapest plane tickets to St. Louis found on KAYAK recently.
3:34 pm - 11:10 amPHX-STL
18h 36m1 stop
9:29 pm - 2:39 pmSTL-PHX
18h 10m1 stop
$186Frontier
Find Deal
Sat, Dec 21 - Fri, Dec 27
6:00 am - 8:13 amPHX-STL
25h 13m1 stop
6:46 pm - 12:20 amSTL-PHX
6h 34m1 stop
$218Frontier
Find Deal
Tue, Dec 3 - Wed, Dec 4
7:58 pm - 11:54 pmPHX-STL
2h 56mnonstop
2:29 pm - 5:04 pmSTL-PHX
3h 35mnonstop
$277American Airlines
Find Deal
Tue, Dec 10 - Wed, Dec 18
12:55 am - 10:40 amPHX-STL
8h 45m1 stop
10:21 am - 5:23 pmSTL-PHX
8h 02m1 stop
$296Delta
Find Deal
Mon, Dec 9 - Wed, Dec 18
9:40 am - 1:44 pmPHX-STL
3h 04mnonstop
2:29 pm - 4:53 pmSTL-PHX
3h 24mnonstop
$302American Airlines
Find Deal
Wed, Dec 4 - Sat, Dec 7
3:25 pm - 10:05 pmPHX-STL
5h 40m1 stop
7:15 am - 9:45 amSTL-PHX
3h 30mnonstop
$308Southwest
Find Deal
Wed, Dec 4 - Sat, Dec 7
1:50 pm - 10:26 pmPHX-STL
7h 36m1 stop
6:00 am - 1:55 pmSTL-PHX
8h 55m1 stop
$321Delta
Find Deal
Wed, Dec 11 - Sun, Jan 12
12:59 am - 10:47 amPHX-STL
8h 48m1 stop
5:33 pm - 11:11 pmSTL-PHX
6h 38m1 stop
$325United Airlines
Find Deal
Mon, Dec 30 - Tue, Dec 31
3:25 pm - 10:05 pmPHX-STL
5h 40m1 stop
6:05 am - 12:45 pmSTL-PHX
7h 40m2 stops
$362Southwest
Find Deal
Wed, Dec 4 - Sat, Dec 7
7:00 am - 12:48 pmPHX-STL
4h 48m1 stop
5:33 pm - 11:11 pmSTL-PHX
6h 38m1 stop
$376United Airlines
Find Deal
Tue, Dec 31 - Tue, Dec 31
8:56 pm - 8:13 amPHX-STL
10h 17m1 stop
$104Frontier
Find Deal
Fri, Dec 27
8:07 pm - 8:29 pmPHX-STL
23h 22m1 stop
$105Frontier
Find Deal
Sun, Dec 22
7:58 pm - 11:57 pmPHX-STL
2h 59mnonstop
$139American Airlines
Find Deal
Tue, Feb 11
12:55 am - 10:40 amPHX-STL
8h 45m1 stop
$148Delta
Find Deal
Mon, Dec 9
10:51 am - 4:31 pmPHX-STL
4h 40m1 stop
$153United Airlines
Find Deal
Sat, Jan 18
5:20 am - 9:10 amPHX-STL
2h 50mnonstop
$164Southwest
Find Deal
Mon, Dec 30
1:05 pm - 6:20 pmPHX-STL
4h 15m1 stop
$169Southwest
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Thu, Feb 20
12:55 am - 10:40 amPHX-STL
8h 45m1 stop
$173Delta
Find Deal
Sun, Dec 15
7:59 pm - 11:57 pmPHX-STL
2h 58mnonstop
$185American Airlines
Find Deal
Fri, Nov 22
9:25 am - 4:38 pmPHX-STL
6h 13m1 stop
$193United Airlines
Find Deal
Sat, Dec 14
6:00 am - 11:44 pmPHX-STL
16h 44m1 stop
5:38 pm - 7:15 pmSTL-PHX
26h 37m1 stop
$388Frontier
Find Deal
Fri, Nov 15 - Fri, Nov 22
3:51 pm - 11:44 pmPHX-STL
6h 53m1 stop
4:09 pm - 12:11 amSTL-PHX
9h 02m1 stop
$398Frontier
Find Deal
Fri, Nov 15 - Mon, Nov 18
3:51 pm - 11:44 pmPHX-STL
6h 53m1 stop
10:59 pm - 10:25 amSTL-PHX
12h 26m1 stop
$408Frontier
Find Deal
Fri, Nov 15 - Sun, Nov 17
9:00 am - 4:34 pmPHX-STL
30h 34m2 stops
5:29 pm - 9:48 pmSTL-PHX
29h 19m2 stops
$496Spirit Airlines
Find Deal
Fri, Nov 15 - Sun, Nov 17
9:00 am - 4:34 pmPHX-STL
30h 34m3 stops
5:29 pm - 9:48 pmSTL-PHX
29h 19m2 stops
$579Spirit Airlines
Find Deal
Fri, Nov 15 - Sun, Nov 17
12:45 am - 9:48 amPHX-STL
8h 03m1 stop
2:24 pm - 4:51 pmSTL-PHX
3h 27mnonstop
$594American Airlines
Find Deal
Tue, Nov 19 - Mon, Nov 25
12:45 am - 9:48 amPHX-STL
8h 03m1 stop
10:01 am - 2:57 pmSTL-PHX
5h 56m1 stop
$603American Airlines
Find Deal
Tue, Nov 19 - Mon, Nov 25
12:45 pm - 9:36 pmPHX-STL
7h 51m2 stops
1:39 pm - 6:16 pmSTL-PHX
5h 37m1 stop
$687United Airlines
Find Deal
Fri, Nov 15 - Fri, Nov 22
12:45 pm - 9:36 pmPHX-STL
7h 51m2 stops
10:10 am - 6:16 pmSTL-PHX
9h 06m2 stops
$866United Airlines
Find Deal
Fri, Nov 15 - Fri, Nov 22
8:50 pm - 12:40 amPHX-STL
2h 50mnonstop
8:00 am - 1:30 pmSTL-PHX
6h 30m1 stop
$883Southwest
Find Deal
Sun, Nov 17 - Tue, Nov 19
7:58 pm - 11:54 pmPHX-STL
2h 56mnonstop
2:17 pm - 4:41 pmSTL-PHX
3h 24mnonstop
$277American Airlines
Find Deal
Wed, Dec 18 - Wed, Jan 1
9:40 am - 1:44 pmPHX-STL
3h 04mnonstop
2:29 pm - 4:53 pmSTL-PHX
3h 24mnonstop
$302American Airlines
Find Deal
Wed, Dec 4 - Sat, Dec 7
9:30 am - 1:33 pmPHX-STL
3h 03mnonstop
6:23 am - 8:55 amSTL-PHX
3h 32mnonstop
$327American Airlines
Find Deal
Thu, Dec 12 - Thu, Dec 19
9:30 am - 1:32 pmPHX-STL
3h 02mnonstop
6:44 am - 9:24 amSTL-PHX
3h 40mnonstop
$363American Airlines
Find Deal
Wed, Dec 11 - Sun, Jan 12
9:40 am - 1:44 pmPHX-STL
3h 04mnonstop
7:30 am - 10:00 amSTL-PHX
3h 30mnonstop
$369American Airlines
Find Deal
Mon, Nov 25 - Fri, Nov 29
7:58 pm - 11:54 pmPHX-STL
2h 56mnonstop
7:20 am - 9:56 amSTL-PHX
3h 36mnonstop
$374American Airlines
Find Deal
Fri, Dec 6 - Tue, Dec 10
8:00 pm - 12:06 amPHX-STL
3h 06mnonstop
7:24 am - 9:55 amSTL-PHX
3h 31mnonstop
$385American Airlines
Find Deal
Mon, Dec 23 - Wed, Jan 1
7:58 pm - 11:54 pmPHX-STL
2h 56mnonstop
7:20 am - 9:56 amSTL-PHX
3h 36mnonstop
$388American Airlines
Find Deal
Sat, Dec 7 - Fri, Dec 13
6:50 pm - 10:40 pmPHX-STL
2h 50mnonstop
5:00 am - 7:35 amSTL-PHX
3h 35mnonstop
$477Southwest
Find Deal
Tue, Nov 26 - Sat, Nov 30
2:50 pm - 6:40 pmPHX-STL
2h 50mnonstop
9:55 pm - 12:20 amSTL-PHX
3h 25mnonstop
$497Southwest
Find Deal
Thu, Nov 28 - Mon, Dec 2

Frontier flights from Phoenix Sky Harbor Intl Airport to St. Louis

Our best Frontier deals on Phoenix Sky Harbor Intl Airport to St. Louis flight tickets
Frontier
Dec 21
PHX3:34 pmPhoenix Sky Harbor Intl
18h 36m
1 stop
STL11:10 amLambert-St Louis
Dec 27
STL9:29 pmLambert-St Louis
18h 10m
1 stop
PHX2:39 pmPhoenix Sky Harbor Intl
Frontier
Dec 3
PHX6:00 amPhoenix Sky Harbor Intl
25h 13m
1 stop
STL8:13 amLambert-St Louis
Dec 4
STL6:46 pmLambert-St Louis
6h 34m
1 stop
PHX12:20 amPhoenix Sky Harbor Intl
Frontier
Dec 29
PHX5:45 amPhoenix Sky Harbor Intl
25h 28m
1 stop
STL8:13 amLambert-St Louis
Jan 4
STL6:49 pmLambert-St Louis
13h 47m
1 stop
PHX7:36 amPhoenix Sky Harbor Intl

American Airlines flights from Phoenix Sky Harbor Intl Airport to St. Louis

Our best American Airlines deals on Phoenix Sky Harbor Intl Airport to St. Louis flight tickets
American Airlines
Dec 10
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 4
PHX9:40 amPhoenix Sky Harbor Intl
3h 04m
STL1:44 pmLambert-St Louis
Dec 7
STL2:29 pmLambert-St Louis
3h 24m
PHX4:53 pmPhoenix Sky Harbor Intl
American Airlines
Dec 9
PHX12:45 amPhoenix Sky Harbor Intl
8h 01m
1 stop
STL9:46 amLambert-St Louis
Dec 18
STL2:29 pmLambert-St Louis
3h 35m
PHX5:04 pmPhoenix Sky Harbor Intl

How to get the cheapest flight ticket from Phoenix Sky Harbor Intl Airport 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 Sky Harbor Intl Airport to St. Louis?

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

What is the cheapest day to depart Phoenix Sky Harbor Intl Airport 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 Sky Harbor Intl Airport to St. Louis?

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

What is the cheapest airline that flies to St. Louis from Phoenix Sky Harbor Intl Airport?

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

How far in advance should you book Phoenix Sky Harbor Intl Airport to St. Louis flights?

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

How many flights depart from Phoenix Sky Harbor Intl Airport to St. Louis on average per day?

As of November 2024, there are 10 flights per week flying from Phoenix Sky Harbor Intl Airport to St. Louis. The most common time of day flights depart is 9:00AM, with 41% of flights taking off at noon.

How many flights depart from Phoenix Sky Harbor Intl Airport to St. Louis on average per week?

As of November 2024, there are 70 flights per week flying from Phoenix Sky Harbor Intl Airport to St. Louis. The most common day of the week flights depart is Sunday, with 16% of flights taking off on this day.

Can stopping save me money on Phoenix Sky Harbor Intl Airport to St. Louis flights?

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

How have Phoenix Sky Harbor Intl Airport to St. Louis flight prices changed over time?

As of November 2024, prices for Phoenix Sky Harbor Intl Airport to St. Louis flights are approximately 1% cheaper when compared to flights at the same time last year.

When to book flights from Phoenix Sky Harbor Intl Airport to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Phoenix Sky Harbor Intl Airport to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Phoenix Sky Harbor Intl Airport to St. Louis (PHX to STL) flight deals and tips

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

Best Price Found

$104

Fastest flight time

2h 50m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Phoenix Sky Harbor Intl Airport in the past 72 hours is $104. The best round-trip flight deal from Phoenix Sky Harbor Intl Airport to St. Louis found on momondo in the last 72 hours is $186.
The fastest flight from Phoenix Sky Harbor Intl Airport to St. Louis takes 2h 50m
Direct flights go from Phoenix Sky Harbor Intl Airport to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

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

    The straight-line distance from Phoenix Sky Harbor Intl to Lambert-St Louis is 1265.4 mi. 2h 50m is a normal flight duration for this route.

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

    Prices for flights from Phoenix Sky Harbor Intl Airport to Lambert-St Louis Airport refresh daily.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Phoenix Sky Harbor Intl Airport 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.

  • What is the most popular plane model from Phoenix Sky Harbor Intl Airport to St. Louis?

  • What is the most popular airline from Phoenix Sky Harbor Intl Airport to St. Louis?


Best airlines flying from Phoenix Sky Harbor Intl Airport to St. Louis

Compare and see reviews for airlines that fly from Phoenix Sky Harbor Intl Airport to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $78Free CancellationRating
6.1
3,551 reviews
Search Frontier flights
American AirlinesPriceFrom $131Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $216Free CancellationRating
8.0
8,788 reviews
Search Delta flights
SouthwestPriceFrom $262Free CancellationRating
8.1
5,045 reviews
Search Southwest flights
United AirlinesPriceFrom $273Free CancellationRating
7.4
9,194 reviews
Search United Airlines flights
  • Southwest Flights From Phoenix Sky Harbor Intl Airport to St. Louis

    Across 42 Southwest flights from Phoenix Sky Harbor Intl Airport to St. Louis this week, the average price was $399, with the best Southwest deals starting from $262 round-trip. 5,045 users have rated Southwest on momondo, with an average score of 8.1/10.

  • American Airlines Flights From Phoenix Sky Harbor Intl Airport to St. Louis

    $131 is the best American Airlines flight deal from Phoenix Sky Harbor Intl Airport to St. Louis found on momondo over the last 72 hours. The average American Airlines ticket price found was closer to $342, however, with flight time and availability significantly affecting the price. American Airlines (7.2/10 from 10,000 user reviews) flies into St. Louis from Phoenix Sky Harbor Intl Airport 14 times in an average week so prices can vary.


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?

momondo does allow users to show only those flights to St. Louis from Phoenix which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between Phoenix and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from Phoenix to St. Louis now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to St. Louis and let you know when they change.


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