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Cheap flights from St. Louis to Phoenix Sky Harbor Intl Airport 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 St. Louis to Phoenix Sky Harbor Intl Airport departing on 1/11. 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 St. Louis to Phoenix

Cheap round-trip flights

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

Cheap last minute flights

Planning a quick getaway from St. Louis to Phoenix? 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 Phoenix, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from St. Louis to Phoenix

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

All round-trip flight deals to Phoenix

The cheapest plane tickets to Phoenix found on KAYAK recently.
8:34 pm - 8:18 amSTL-PHX
12h 44m1 stop
10:28 pm - 8:13 amPHX-STL
8h 45m1 stop
$108Frontier
Find Deal
Mon, Dec 9 - Tue, Dec 17
6:46 pm - 8:53 amSTL-PHX
15h 07m1 stop
6:00 am - 8:13 amPHX-STL
25h 13m1 stop
$118Frontier
Find Deal
Sat, Dec 7 - Tue, Dec 10
6:44 am - 9:24 amSTL-PHX
3h 40mnonstop
9:30 am - 1:42 pmPHX-STL
3h 12mnonstop
$277American Airlines
Find Deal
Wed, Jan 22 - Wed, Feb 12
10:00 am - 2:20 pmSTL-PHX
5h 20m1 stop
6:05 am - 9:50 amPHX-STL
2h 45mnonstop
$287Southwest
Find Deal
Wed, Feb 12 - Tue, Feb 18
6:00 am - 12:29 pmSTL-PHX
7h 29m1 stop
7:05 am - 1:30 pmPHX-STL
5h 25m1 stop
$296Delta
Find Deal
Tue, Dec 10 - Tue, Dec 17
2:29 pm - 4:53 pmSTL-PHX
3h 24mnonstop
7:58 pm - 11:54 pmPHX-STL
2h 56mnonstop
$302American Airlines
Find Deal
Mon, Dec 9 - Tue, Dec 17
7:40 am - 5:24 pmSTL-PHX
10h 44m2 stops
6:30 am - 1:18 pmPHX-STL
5h 48m1 stop
$310Delta
Find Deal
Sat, Jan 11 - Wed, Jan 15
6:30 am - 9:10 amSTL-PHX
3h 40mnonstop
2:15 pm - 7:15 pmPHX-STL
4h 00m1 stop
$369Southwest
Find Deal
Wed, Jan 22 - Fri, Feb 28
7:00 am - 2:08 pmSTL-PHX
8h 08m1 stop
8:00 am - 11:30 pmPHX-STL
14h 30m2 stops
$377United Airlines
Find Deal
Wed, Jan 22 - Wed, Feb 12
1:39 pm - 11:57 pmSTL-PHX
11h 18m2 stops
8:00 am - 4:47 pmPHX-STL
7h 47m1 stop
$381United Airlines
Find Deal
Wed, Dec 18 - Wed, Dec 25
6:46 pm - 12:20 amSTL-PHX
6h 34m1 stop
$53Frontier
Find Deal
Sat, Jan 11
6:46 pm - 12:20 amSTL-PHX
6h 34m1 stop
$54Frontier
Find Deal
Mon, Dec 16
7:20 am - 9:56 amSTL-PHX
3h 36mnonstop
$139American Airlines
Find Deal
Tue, Dec 17
7:00 am - 2:08 pmSTL-PHX
8h 08m1 stop
$144United Airlines
Find Deal
Tue, Jan 14
3:35 pm - 9:35 pmSTL-PHX
7h 00m1 stop
$148Delta
Find Deal
Tue, Jan 7
7:00 am - 1:07 pmSTL-PHX
8h 07m1 stop
$159United Airlines
Find Deal
Tue, Mar 18
6:59 pm - 11:46 pmSTL-PHX
6h 47m1 stop
$163Delta
Find Deal
Wed, Mar 19
6:23 am - 8:55 amSTL-PHX
3h 32mnonstop
$164American Airlines
Find Deal
Thu, Dec 19
9:25 am - 4:05 pmSTL-PHX
7h 40m2 stops
$178Southwest
Find Deal
Sat, Jan 11
6:10 pm - 8:35 pmSTL-PHX
3h 25mnonstop
$185Southwest
Find Deal
Mon, Nov 25
5:37 pm - 9:02 amSTL-PHX
16h 25m1 stop
9:16 am - 12:06 amPHX-STL
13h 50m1 stop
$308Frontier
Find Deal
Tue, Nov 19 - Mon, Nov 25
5:38 pm - 7:15 pmSTL-PHX
26h 37m1 stop
6:00 am - 12:34 pmPHX-STL
5h 34m1 stop
$328Frontier
Find Deal
Fri, Nov 22 - Sun, Nov 24
5:45 am - 11:20 amSTL-PHX
6h 35m1 stop
5:50 pm - 9:40 pmPHX-STL
2h 50mnonstop
$633Southwest
Find Deal
Fri, Nov 22 - Sun, Nov 24
7:30 am - 10:00 amSTL-PHX
3h 30mnonstop
7:59 pm - 11:57 pmPHX-STL
2h 58mnonstop
$663American Airlines
Find Deal
Tue, Nov 19 - Mon, Nov 25
6:10 pm - 8:35 pmSTL-PHX
3h 25mnonstop
5:50 pm - 9:40 pmPHX-STL
2h 50mnonstop
$664Southwest
Find Deal
Fri, Nov 22 - Sun, Nov 24
6:17 am - 12:11 pmSTL-PHX
6h 54m1 stop
7:59 pm - 11:57 pmPHX-STL
2h 58mnonstop
$673American Airlines
Find Deal
Tue, Nov 19 - Mon, Nov 25
5:40 pm - 10:47 pmSTL-PHX
6h 07m1 stop
10:50 am - 4:32 pmPHX-STL
4h 42m1 stop
$678United Airlines
Find Deal
Thu, Nov 21 - Sun, Nov 24
7:09 am - 2:06 pmSTL-PHX
7h 57m1 stop
8:41 pm - 10:27 amPHX-STL
12h 46m2 stops
$683United Airlines
Find Deal
Fri, Nov 22 - Sun, Nov 24
10:21 am - 5:07 pmSTL-PHX
7h 46m1 stop
3:07 pm - 10:30 pmPHX-STL
6h 23m1 stop
$896Delta
Find Deal
Thu, Nov 21 - Sat, Nov 23
7:55 am - 1:29 pmSTL-PHX
6h 34m1 stop
6:31 pm - 12:42 amPHX-STL
5h 11m1 stop
$1,046Delta
Find Deal
Sat, Nov 23 - Sat, Nov 30
6:44 am - 9:24 amSTL-PHX
3h 40mnonstop
9:30 am - 1:42 pmPHX-STL
3h 12mnonstop
$277American Airlines
Find Deal
Wed, Jan 22 - Wed, Feb 12
2:29 pm - 4:53 pmSTL-PHX
3h 24mnonstop
7:58 pm - 11:54 pmPHX-STL
2h 56mnonstop
$302American Airlines
Find Deal
Mon, Dec 9 - Tue, Dec 17
6:00 am - 8:40 amSTL-PHX
3h 40mnonstop
6:35 pm - 10:25 pmPHX-STL
2h 50mnonstop
$303Southwest
Find Deal
Thu, Feb 6 - Tue, Feb 11
7:20 am - 9:56 amSTL-PHX
3h 36mnonstop
9:30 am - 1:33 pmPHX-STL
3h 03mnonstop
$327American Airlines
Find Deal
Thu, Dec 12 - Sat, Dec 14
6:44 am - 9:24 amSTL-PHX
3h 40mnonstop
9:34 am - 1:38 pmPHX-STL
3h 04mnonstop
$363American Airlines
Find Deal
Wed, Jan 22 - Fri, Feb 28
9:10 am - 11:40 amSTL-PHX
3h 30mnonstop
8:40 pm - 12:30 amPHX-STL
2h 50mnonstop
$370Southwest
Find Deal
Sun, Nov 24 - Tue, Nov 26
2:29 pm - 4:53 pmSTL-PHX
3h 24mnonstop
9:30 am - 1:32 pmPHX-STL
3h 02mnonstop
$374American Airlines
Find Deal
Fri, Dec 13 - Wed, Dec 18
2:17 pm - 4:41 pmSTL-PHX
3h 24mnonstop
8:00 pm - 12:06 amPHX-STL
3h 06mnonstop
$388American Airlines
Find Deal
Mon, Dec 23 - Mon, Dec 30
7:20 am - 9:56 amSTL-PHX
3h 36mnonstop
9:30 am - 1:33 pmPHX-STL
3h 03mnonstop
$399American Airlines
Find Deal
Fri, Dec 13 - Mon, Dec 16
6:44 am - 9:24 amSTL-PHX
3h 40mnonstop
9:30 am - 1:42 pmPHX-STL
3h 12mnonstop
$402American Airlines
Find Deal
Sat, Feb 8 - Mon, Feb 10

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

Our best Frontier deals on St. Louis to Phoenix Sky Harbor Intl Airport flight tickets
Frontier
Dec 9
STL8:34 pmLambert-St Louis
12h 44m
1 stop
PHX8:18 amPhoenix Sky Harbor Intl
Dec 17
PHX10:28 pmPhoenix Sky Harbor Intl
8h 45m
1 stop
STL8:13 amLambert-St Louis
Frontier
Dec 7
STL6:46 pmLambert-St Louis
15h 07m
1 stop
PHX8:53 amPhoenix Sky Harbor Intl
Dec 10
PHX6:00 amPhoenix Sky Harbor Intl
25h 13m
1 stop
STL8:13 amLambert-St Louis
Frontier
Jan 20
STL8:31 pmLambert-St Louis
12h 46m
1 stop
PHX8:17 amPhoenix Sky Harbor Intl
Jan 24
PHX9:12 amPhoenix Sky Harbor Intl
9h 19m
1 stop
STL7:31 pmLambert-St Louis

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

Our best United Airlines deals on St. Louis to Phoenix Sky Harbor Intl Airport flight tickets
United Airlines
Jan 22
STL7:00 amLambert-St Louis
8h 08m
1 stop
PHX2:08 pmPhoenix Sky Harbor Intl
Feb 12
PHX8:00 amPhoenix Sky Harbor Intl
14h 30m
2 stops
STL11:30 pmLambert-St Louis
United Airlines
Dec 18
STL1:39 pmLambert-St Louis
11h 18m
2 stops
PHX11:57 pmPhoenix Sky Harbor Intl
Dec 25
PHX8:00 amPhoenix Sky Harbor Intl
7h 47m
1 stop
STL4:47 pmLambert-St Louis
United Airlines
Dec 24
STL8:35 amLambert-St Louis
7h 53m
1 stop
PHX3:28 pmPhoenix Sky Harbor Intl
Dec 29
PHX12:59 amPhoenix Sky Harbor Intl
8h 48m
1 stop
STL10:47 amLambert-St Louis

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

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 St. Louis to Phoenix Sky Harbor Intl Airport?

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

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

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

When is the cheapest time to fly from St. Louis to Phoenix Sky Harbor Intl Airport?

In the evening. St. Louis to Phoenix Sky Harbor Intl Airport flights are approximately 50% more expensive at noon than in the evening

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

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

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

18 days before. The cheapest time to buy a flight from St. Louis to Phoenix Sky Harbor Intl Airport is approximately 18 days to departure

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

As of November 2024, 9 flights take off from St. Louis and land in Phoenix Sky Harbor Intl Airport each day. The most common flight departure time for this route is 7:00AM, with 53% of daily flights taking off at noon.

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

The number of flights available between St. Louis and Phoenix Sky Harbor Intl Airport is 68 per week as of November 2024. The most frequent departure day is Fri, with 21% of weekly flights leaving on this day.

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

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

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

As of November 2024, prices for St. Louis to Phoenix Sky Harbor Intl Airport flights are approximately 43% more expensive when compared to flights at the same time last year.

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

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

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

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

Best Price Found

$53

Fastest flight time

3h 24m

Direct flights

Every day
The best one-way flight to Phoenix Sky Harbor Intl Airport from St. Louis in the past 72 hours is $53. The best round-trip flight deal from St. Louis to Phoenix Sky Harbor Intl Airport found on momondo in the last 72 hours is $108.
The fastest flight from St. Louis to Phoenix Sky Harbor Intl Airport takes 3h 24m
Direct flights go from St. Louis to Phoenix Sky Harbor Intl Airport every day.

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

    Phoenix Sky Harbor Intl is 1265.4 mi away from Lambert-St Louis. Typically, this will take 3h 24m by plane in normal conditions.

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

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

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Phoenix Sky Harbor Intl Airport.

  • What documentation or ID do you need to fly to Phoenix Sky Harbor Intl Airport?

    The travel and health documents you'll need for your trip to Phoenix Sky Harbor Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Phoenix Sky Harbor Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

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


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

Compare and see reviews for airlines that fly from St. Louis to Phoenix Sky Harbor Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $78Free CancellationRating
6.1
3,543 reviews
Search Frontier flights
American AirlinesPriceFrom $148Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $215Free CancellationRating
8.0
8,766 reviews
Search Delta flights
SouthwestPriceFrom $216Free CancellationRating
8.1
5,022 reviews
Search Southwest flights
United AirlinesPriceFrom $226Free CancellationRating
7.4
9,168 reviews
Search United Airlines flights
  • Southwest Flights From St. Louis to Phoenix Sky Harbor Intl Airport

    Southwest operates around 30 flights from St. Louis to Phoenix Sky Harbor Intl Airport every week. The average price of these flights found in the last 72 hours has been $425, but momondo users have found Southwest deals from St. Louis to Phoenix Sky Harbor Intl Airport from as low as $216 round-trip. Southwest has been scored 8.1/10 in 5,022 reviews.

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

    United Airlines (7.4/10 from 9,168 reviews) operates around 10 flights from St. Louis to Phoenix Sky Harbor Intl Airport in any given week. The average United Airlines airfare for this route is around $475, with deals from around $226 rare but found on momondo. Referenced prices are for round-trip St. Louis to Phoenix Sky Harbor Intl Airport flight searches in the last 72 hours.


Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from St. Louis to Phoenix. momondo saves you time and could save you money on your trip.

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

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

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Phoenix from St. Louis.

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

If you are simply researching potential flights to Phoenix, momondo offers a useful price alert feature which will track prices for flights to Phoenix from St. Louis and alert you when they change.


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