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Cheap flights from St. Louis to Phoenix from $54

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 departing on 1/22. 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 - 8:49 pmSTL-PHX
25h 15m1 stop
9:59 pm - 7:31 pmPHX-STL
20h 32m1 stop
$107Frontier
Find Deal
Thu, Jan 9 - Thu, Jan 16
6:46 pm - 12:20 amSTL-PHX
6h 34m1 stop
9:51 pm - 9:16 amPHX-STL
10h 25m1 stop
$108Frontier
Find Deal
Sat, Jan 11 - Thu, Jan 23
7:40 am - 1:29 pmSTL-PHX
6h 49m1 stop
6:30 am - 1:43 pmPHX-STL
6h 13m1 stop
$318Delta
Find Deal
Tue, Jan 14 - Tue, Jan 21
8:45 pm - 11:20 pmSTL-PHX
3h 35mnonstop
7:05 pm - 10:55 pmPHX-STL
2h 50mnonstop
$320Southwest
Find Deal
Sat, Feb 15 - Thu, Feb 20
6:00 pm - 11:36 pmSTL-PHX
6h 36m1 stop
7:55 pm - 11:59 pmPHX-STL
3h 04mnonstop
$327American Airlines
Find Deal
Thu, Jan 9 - Thu, Jan 16
6:59 pm - 12:46 amSTL-PHX
6h 47m1 stop
6:30 am - 1:43 pmPHX-STL
6h 13m1 stop
$328Delta
Find Deal
Thu, Jan 23 - Wed, Jan 29
6:00 pm - 11:36 pmSTL-PHX
6h 36m1 stop
7:58 pm - 11:57 pmPHX-STL
2h 59mnonstop
$329American Airlines
Find Deal
Thu, Jan 23 - Mon, Jan 27
1:45 pm - 8:19 pmSTL-PHX
7h 34m1 stop
7:05 am - 3:40 pmPHX-STL
7h 35m2 stops
$333United Airlines
Find Deal
Tue, Feb 11 - Sat, Feb 15
8:25 pm - 11:00 pmSTL-PHX
3h 35mnonstop
6:55 am - 10:45 amPHX-STL
2h 50mnonstop
$345Southwest
Find Deal
Fri, Jan 17 - Tue, Jan 21
8:20 am - 9:06 pmSTL-PHX
13h 46m1 stop
7:05 am - 12:43 pmPHX-STL
4h 38m1 stop
$396United Airlines
Find Deal
Tue, Feb 18 - Wed, Feb 26
7:09 pm - 12:26 amSTL-PHX
6h 17m1 stop
$54Frontier
Find Deal
Wed, Jan 22
8:31 pm - 8:17 amSTL-PHX
12h 46m1 stop
$60Frontier
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Mon, Jan 20
7:40 am - 1:29 pmSTL-PHX
6h 49m1 stop
$159Delta
Find Deal
Tue, Jan 21
8:25 pm - 11:00 pmSTL-PHX
3h 35mnonstop
$160Southwest
Find Deal
Mon, Jan 20
7:00 am - 2:08 pmSTL-PHX
8h 08m1 stop
$165United Airlines
Find Deal
Thu, Jan 23
6:55 am - 2:00 pmSTL-PHX
8h 05m1 stop
$168Southwest
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Thu, Jan 30
7:40 am - 1:24 pmSTL-PHX
6h 44m1 stop
$169Delta
Find Deal
Sun, Feb 16
9:44 am - 8:19 pmSTL-PHX
11h 35m2 stops
$204United Airlines
Find Deal
Tue, Jan 21
7:15 am - 8:49 amSTL-PHX
3h 34mnonstop
$225American Airlines
Find Deal
Thu, Mar 20
7:15 am - 8:49 amSTL-PHX
3h 34mnonstop
$245American Airlines
Find Deal
Fri, Mar 21
12:00 pm - 11:40 pmSTL-PHX
12h 40m1 stop
9:50 pm - 9:06 amPHX-STL
10h 16m1 stop
$258Frontier
Find Deal
Sun, Dec 22 - Thu, Jan 9
12:00 pm - 11:40 pmSTL-PHX
12h 40m1 stop
7:20 pm - 9:06 amPHX-STL
12h 46m1 stop
$265Frontier
Find Deal
Sun, Dec 22 - Tue, Jan 7
5:45 am - 8:15 amSTL-PHX
3h 30mnonstop
6:55 am - 10:45 amPHX-STL
2h 50mnonstop
$599Southwest
Find Deal
Sun, Dec 22 - Mon, Feb 3
9:45 am - 1:50 pmSTL-PHX
5h 05m1 stop
6:55 am - 10:45 amPHX-STL
2h 50mnonstop
$604Southwest
Find Deal
Sun, Dec 22 - Mon, Feb 3
7:24 am - 9:55 amSTL-PHX
3h 31mnonstop
7:58 pm - 11:57 pmPHX-STL
2h 59mnonstop
$638American Airlines
Find Deal
Sun, Dec 22 - Tue, Jan 14
5:30 pm - 10:50 pmSTL-PHX
6h 20m1 stop
10:51 am - 4:31 pmPHX-STL
4h 40m1 stop
$643United Airlines
Find Deal
Mon, Dec 23 - Tue, Jan 14
1:45 pm - 6:21 pmSTL-PHX
5h 36m1 stop
8:02 pm - 12:06 amPHX-STL
3h 04mnonstop
$648American Airlines
Find Deal
Sun, Dec 22 - Thu, Jan 9
5:30 pm - 10:50 pmSTL-PHX
6h 20m1 stop
10:51 am - 12:27 amPHX-STL
12h 36m2 stops
$658United Airlines
Find Deal
Sun, Dec 22 - Sat, Jan 11
2:15 pm - 7:18 pmSTL-PHX
6h 03m1 stop
3:05 pm - 10:06 pmPHX-STL
6h 01m1 stop
$727Delta
Find Deal
Sat, Dec 21 - Tue, Dec 31
2:15 pm - 7:18 pmSTL-PHX
6h 03m1 stop
12:59 am - 11:06 amPHX-STL
9h 07m1 stop
$1,155Delta
Find Deal
Sat, Dec 21 - Fri, Dec 27
8:45 pm - 11:20 pmSTL-PHX
3h 35mnonstop
7:05 pm - 10:55 pmPHX-STL
2h 50mnonstop
$320Southwest
Find Deal
Sat, Feb 15 - Thu, Feb 20
7:15 am - 9:59 amSTL-PHX
3h 44mnonstop
7:52 pm - 11:39 pmPHX-STL
2h 47mnonstop
$344American Airlines
Find Deal
Sat, Feb 15 - Sat, Feb 22
8:25 pm - 11:00 pmSTL-PHX
3h 35mnonstop
6:55 am - 10:45 amPHX-STL
2h 50mnonstop
$345Southwest
Find Deal
Fri, Jan 17 - Tue, Jan 21
7:30 am - 10:10 amSTL-PHX
3h 40mnonstop
6:55 am - 10:45 amPHX-STL
2h 50mnonstop
$360Southwest
Find Deal
Sat, Jan 11 - Wed, Jan 22
2:27 pm - 4:52 pmSTL-PHX
3h 25mnonstop
7:55 pm - 11:59 pmPHX-STL
3h 04mnonstop
$384American Airlines
Find Deal
Thu, Jan 23 - Sun, Jan 26
9:50 pm - 12:25 amSTL-PHX
3h 35mnonstop
7:50 pm - 12:40 amPHX-STL
2h 50mnonstop
$385Southwest
Find Deal
Fri, Feb 28 - Thu, Mar 13
6:56 am - 9:21 amSTL-PHX
3h 25mnonstop
7:58 pm - 11:57 pmPHX-STL
2h 59mnonstop
$395American Airlines
Find Deal
Fri, Jan 10 - Mon, Jan 13
6:30 am - 9:10 amSTL-PHX
3h 40mnonstop
6:55 am - 10:45 amPHX-STL
2h 50mnonstop
$399Southwest
Find Deal
Wed, Jan 8 - Tue, Jan 21
8:25 pm - 11:00 pmSTL-PHX
3h 35mnonstop
7:50 pm - 12:40 amPHX-STL
2h 50mnonstop
$405Southwest
Find Deal
Sun, Feb 9 - Mon, Mar 31
8:25 pm - 11:00 pmSTL-PHX
3h 35mnonstop
6:05 am - 9:50 amPHX-STL
2h 45mnonstop
$414Southwest
Find Deal
Fri, Jan 17 - Mon, Jan 20

Frontier flights from St. Louis to Phoenix

Our best Frontier deals on St. Louis to Phoenix flight tickets
Frontier
Jan 9
STL8:34 pmLambert-St Louis
25h 15m
1 stop
PHX8:49 pmPhoenix Sky Harbor Intl
Jan 16
PHX9:59 pmPhoenix Sky Harbor Intl
20h 32m
1 stop
STL7:31 pmLambert-St Louis
Frontier
Jan 11
STL6:46 pmLambert-St Louis
6h 34m
1 stop
PHX12:20 amPhoenix Sky Harbor Intl
Jan 23
PHX9:51 pmPhoenix Sky Harbor Intl
10h 25m
1 stop
STL9:16 amLambert-St Louis
Frontier
Jan 18
STL7:09 pmLambert-St Louis
18h 57m
1 stop
PHX1:06 pmPhoenix Sky Harbor Intl
Jan 21
PHX7:20 pmPhoenix Sky Harbor Intl
12h 56m
1 stop
STL9:16 amLambert-St Louis

Southwest flights from St. Louis to Phoenix

Our best Southwest deals on St. Louis to Phoenix flight tickets
Southwest
Feb 15
STL8:45 pmLambert-St Louis
3h 35m
PHX11:20 pmPhoenix Sky Harbor Intl
Feb 20
PHX7:05 pmPhoenix Sky Harbor Intl
2h 50m
STL10:55 pmLambert-St Louis
Southwest
Jan 17
STL8:25 pmLambert-St Louis
3h 35m
PHX11:00 pmPhoenix Sky Harbor Intl
Jan 21
PHX6:55 amPhoenix Sky Harbor Intl
2h 50m
STL10:45 amLambert-St Louis
Southwest
Jan 17
STL8:25 pmLambert-St Louis
3h 35m
PHX11:00 pmPhoenix Sky Harbor Intl
Jan 21
PHX3:45 pmPhoenix Sky Harbor Intl
5h 25m
1 stop
STL10:10 pmLambert-St Louis

See travel insights to Phoenix from

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

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 to Phoenix?

If you are unable to visit Phoenix during the month of May, then departing from St. Louis during the month July is also very affordable. Most momondo users find prices during this month for around $223.

What is the cheapest day to depart on your flight to Phoenix?

On average, the least expensive day to fly to Phoenix from St. Louis is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $288. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from St. Louis because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $401.

What is the cheapest time of day to depart on your flight to Phoenix?

The cheapest time of day to fly to Phoenix is in the evening when flights can be purchased for as low as $185. At noon is when there is more demand to fly to Phoenix, so prices are often more expensive at around $379 per ticket.

What is the cheapest Lambert-St Louis to Phoenix flight route?

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

How far in advance should I book a flight to Phoenix?

You are more likely to see cheaper flights to Phoenix from St. Louis when booking 14 days ahead of your departure date. In general, you can expect to find flights to Phoenix for around $318 when searching 14 days out. In the past 72 hours, momondo users found flights from St. Louis to Phoenix for as low as $202.

What cabin class options are available on Lambert-St Louis to Phoenix flights?

There are 3 cabin classes available to choose from on Lambert-St Louis to Phoenix flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

You could potentially save up to 66% on your flight if you consider stops on a St. Louis to Phoenix flight.

Cheap St. Louis to Phoenix flight deals and tips

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

Best Price Found

$54

Fastest flight time

3h 20m

Direct flights

Every day

Airports in Phoenix

1 airport
The best one-way flight to Phoenix from St. Louis in the past 72 hours is $54. The best round-trip flight deal from St. Louis to Phoenix found on momondo in the last 72 hours is $107.
The fastest flight from St. Louis to Phoenix takes 3h 20m
Direct flights go from St. Louis to Phoenix every day.
There is 1 airport near Phoenix: Phoenix Sky Harbor Intl (PHX)

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

    The distance between Lambert-St Louis and Phoenix is about 1269.1 mi. By plane, this route typically takes 3h 20m.

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

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

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

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

    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.

  • What documentation or ID do you need to fly to Phoenix?

    The travel and health documents you'll need for your trip to Phoenix 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. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.


Best airlines flying from St. Louis to Phoenix

Compare and see reviews for airlines that fly from St. Louis to Phoenix with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $78Free CancellationRating
6.1
3,475 reviews
Search Frontier flights
American AirlinesPriceFrom $146Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $215Free CancellationRating
8.0
8,601 reviews
Search Delta flights
United AirlinesPriceFrom $226Free CancellationRating
7.4
9,043 reviews
Search United Airlines flights
SouthwestPriceFrom $256Free CancellationRating
8.1
4,821 reviews
Search Southwest flights

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?

Flights from St. Louis to Phoenix with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo helps you find the best flight between St. Louis and Phoenix 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 St. Louis to Phoenix right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of St. Louis to Phoenix flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


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Fly into one of these airports located in Phoenix

Airports listed have a maximum distance of 25.4 mi from Phoenix