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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 3/4. 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.
10:15 pm - 9:16 amPHX-STL
10h 01m1 stop
8:52 pm - 7:47 amSTL-PHX
11h 55m1 stop
$108Frontier
Find Deal
Thu, Feb 27 - Sat, Mar 1
9:00 am - 9:06 amPHX-STL
23h 06m1 stop
7:09 pm - 12:26 amSTL-PHX
6h 17m1 stop
$116Frontier
Find Deal
Tue, Jan 14 - Sat, Jan 18
9:30 am - 1:42 pmPHX-STL
3h 12mnonstop
3:10 pm - 9:49 pmSTL-PHX
7h 39m1 stop
$271American Airlines
Find Deal
Fri, Jan 24 - Fri, Jan 24
12:45 am - 11:23 amPHX-STL
9h 38m1 stop
2:27 pm - 4:52 pmSTL-PHX
3h 25mnonstop
$277American Airlines
Find Deal
Thu, Jan 23 - Fri, Jan 24
11:00 am - 2:50 pmPHX-STL
2h 50mnonstop
11:10 am - 3:10 pmSTL-PHX
5h 00m1 stop
$308Southwest
Find Deal
Tue, Jan 7 - Thu, Jan 9
11:25 am - 10:13 pmPHX-STL
8h 48m1 stop
6:59 pm - 11:42 pmSTL-PHX
6h 43m1 stop
$318Delta
Find Deal
Tue, Apr 8 - Tue, Apr 22
7:05 pm - 10:55 pmPHX-STL
2h 50mnonstop
6:00 am - 8:40 amSTL-PHX
3h 40mnonstop
$320Southwest
Find Deal
Thu, Feb 20 - Mon, Feb 24
11:32 pm - 9:58 amPHX-STL
8h 26m1 stop
5:35 pm - 9:56 pmSTL-PHX
6h 21m1 stop
$324United Airlines
Find Deal
Mon, Apr 28 - Tue, Apr 29
5:20 pm - 12:37 amPHX-STL
5h 17m1 stop
5:00 pm - 11:40 pmSTL-PHX
8h 40m1 stop
$338Delta
Find Deal
Fri, Mar 14 - Sat, Mar 22
10:30 am - 8:43 pmPHX-STL
9h 13m2 stops
4:36 pm - 9:28 pmSTL-PHX
5h 52m1 stop
$406United Airlines
Find Deal
Tue, Jan 7 - Thu, Jan 9
8:52 am - 5:36 pmPHX-STL
7h 44m1 stop
$53Frontier
Find Deal
Tue, Mar 4
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, Jan 7
3:15 pm - 11:14 pmPHX-STL
6h 59m1 stop
$148Delta
Find Deal
Wed, Jan 22
5:20 pm - 12:37 amPHX-STL
5h 17m1 stop
$159Delta
Find Deal
Wed, Mar 19
12:45 am - 9:52 amPHX-STL
8h 07m1 stop
$173American Airlines
Find Deal
Sun, Feb 23
6:00 am - 3:47 pmPHX-STL
7h 47m2 stops
$174United Airlines
Find Deal
Sat, Apr 12
11:58 pm - 3:38 pmPHX-STL
14h 40m2 stops
$193United Airlines
Find Deal
Tue, Jan 7
6:05 am - 9:50 amPHX-STL
2h 45mnonstop
$200Southwest
Find Deal
Mon, Feb 10
5:35 am - 10:25 amPHX-STL
2h 50mnonstop
$225Southwest
Find Deal
Thu, Mar 20
5:45 am - 8:13 amPHX-STL
25h 28m1 stop
10:09 pm - 7:36 amSTL-PHX
10h 27m1 stop
$305Frontier
Find Deal
Thu, Dec 26 - Thu, Jan 2
5:45 am - 8:13 amPHX-STL
25h 28m1 stop
5:45 pm - 10:48 pmSTL-PHX
30h 03m1 stop
$346Frontier
Find Deal
Thu, Dec 26 - Mon, Dec 30
1:19 am - 4:25 pmPHX-STL
14h 06m3 stops
4:27 pm - 11:35 pmSTL-PHX
32h 08m2 stops
Wed, Dec 25 - Tue, Dec 31
6:00 pm - 12:28 amPHX-STL
29h 28m1 stop
5:33 pm - 11:11 pmSTL-PHX
6h 38m1 stop
$608United Airlines
Find Deal
Thu, Dec 26 - Tue, Dec 31
11:47 am - 11:59 pmPHX-STL
11h 12m2 stops
6:49 pm - 12:22 amSTL-PHX
6h 33m1 stop
Wed, Dec 25 - Wed, Jan 1
8:00 pm - 12:06 amPHX-STL
3h 06mnonstop
6:00 pm - 11:36 pmSTL-PHX
6h 36m1 stop
$633American Airlines
Find Deal
Thu, Dec 26 - Tue, Dec 31
12:59 am - 10:47 amPHX-STL
8h 48m1 stop
5:33 pm - 11:11 pmSTL-PHX
6h 38m1 stop
$638United Airlines
Find Deal
Wed, Dec 25 - Tue, Dec 31
12:45 am - 9:36 amPHX-STL
7h 51m1 stop
7:24 am - 9:55 amSTL-PHX
3h 31mnonstop
$673American Airlines
Find Deal
Thu, Dec 26 - Wed, Jan 1
5:20 am - 9:10 amPHX-STL
2h 50mnonstop
6:10 pm - 8:35 pmSTL-PHX
3h 25mnonstop
$838Southwest
Find Deal
Mon, Dec 23 - Thu, Dec 26
3:05 pm - 10:00 pmPHX-STL
5h 55m1 stop
6:10 pm - 8:35 pmSTL-PHX
3h 25mnonstop
$843Southwest
Find Deal
Mon, Dec 23 - Thu, Dec 26
7:58 pm - 11:57 pmPHX-STL
2h 59mnonstop
6:44 am - 9:24 amSTL-PHX
3h 40mnonstop
$302American Airlines
Find Deal
Tue, Jan 7 - Thu, Jan 9
7:05 pm - 10:55 pmPHX-STL
2h 50mnonstop
6:00 am - 8:40 amSTL-PHX
3h 40mnonstop
$320Southwest
Find Deal
Thu, Feb 20 - Mon, Feb 24
7:58 pm - 11:57 pmPHX-STL
2h 59mnonstop
6:44 am - 9:24 amSTL-PHX
3h 40mnonstop
$323American Airlines
Find Deal
Sat, Jan 11 - Sat, Jan 18
7:58 pm - 11:57 pmPHX-STL
2h 59mnonstop
2:27 pm - 4:52 pmSTL-PHX
3h 25mnonstop
$344American Airlines
Find Deal
Sat, Jan 11 - Sat, Jan 18
7:55 pm - 11:59 pmPHX-STL
3h 04mnonstop
6:44 am - 9:24 amSTL-PHX
3h 40mnonstop
$384American Airlines
Find Deal
Thu, Jan 23 - Sun, Jan 26
7:52 pm - 11:39 pmPHX-STL
2h 47mnonstop
6:31 am - 9:15 amSTL-PHX
3h 44mnonstop
$404American Airlines
Find Deal
Thu, Feb 20 - Sun, Feb 23
5:11 pm - 9:10 pmPHX-STL
2h 59mnonstop
2:17 pm - 4:41 pmSTL-PHX
3h 24mnonstop
$435American Airlines
Find Deal
Fri, Jan 3 - Mon, Jan 6
6:50 pm - 11:51 pmPHX-STL
3h 01mnonstop
5:24 am - 6:50 amSTL-PHX
3h 26mnonstop
$449American Airlines
Find Deal
Fri, Apr 4 - Sun, Apr 6
1:45 pm - 6:40 pmPHX-STL
2h 55mnonstop
6:55 am - 8:15 amSTL-PHX
3h 20mnonstop
$450Southwest
Find Deal
Thu, May 15 - Sun, May 18
6:50 pm - 11:51 pmPHX-STL
3h 01mnonstop
6:30 pm - 7:55 pmSTL-PHX
3h 25mnonstop
$469American Airlines
Find Deal
Wed, Apr 30 - Sun, May 4

Frontier flights from Phoenix to St. Louis

Our best Frontier deals on Phoenix to St. Louis flight tickets
Frontier
Feb 27
PHX10:15 pmPhoenix Sky Harbor Intl
10h 01m
1 stop
STL9:16 amLambert-St Louis
Mar 1
STL8:52 pmLambert-St Louis
11h 55m
1 stop
PHX7:47 amPhoenix Sky Harbor Intl
Frontier
Jan 14
PHX9:00 amPhoenix Sky Harbor Intl
23h 06m
1 stop
STL9:06 amLambert-St Louis
Jan 18
STL7:09 pmLambert-St Louis
6h 17m
1 stop
PHX12:26 amPhoenix Sky Harbor Intl
Frontier
Jan 7
PHX7:20 pmPhoenix Sky Harbor Intl
12h 46m
1 stop
STL9:06 amLambert-St Louis
Jan 9
STL8:34 pmLambert-St Louis
12h 44m
1 stop
PHX8:18 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
Jan 24
PHX9:30 amPhoenix Sky Harbor Intl
3h 12m
STL1:42 pmLambert-St Louis
Jan 24
STL3:10 pmLambert-St Louis
7h 39m
1 stop
PHX9:49 pmPhoenix Sky Harbor Intl
American Airlines
Jan 23
PHX12:45 amPhoenix Sky Harbor Intl
9h 38m
1 stop
STL11:23 amLambert-St Louis
Jan 24
STL2:27 pmLambert-St Louis
3h 25m
PHX4:52 pmPhoenix Sky Harbor Intl
American Airlines
Jan 7
PHX7:58 pmPhoenix Sky Harbor Intl
2h 59m
STL11:57 pmLambert-St Louis
Jan 9
STL6:44 amLambert-St Louis
3h 40m
PHX9:24 amPhoenix 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 to St. Louis?

In general, June is the cheapest month to fly from Phoenix to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $226. The month of July is another great option to travel to St. Louis, with average flight prices from Phoenix averaging around $226.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $252. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $413. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Phoenix in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $226 when looking at flights departing in the afternoon. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $375 per ticket.

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

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

How far in advance should I book a flight to St. Louis?

The best time to book a flight to St. Louis from Phoenix is 27 days out, which is when prices tend to be around $323. In the past 72 hours, momondo users found flights from Phoenix to St. Louis for as low as $165.

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

There are 3 cabin classes available to choose from on Phoenix to Lambert-St Louis 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 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 45m

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 45m
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 47m, 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
3,474 reviews
Search Frontier flights
American AirlinesPriceFrom $131Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $216Free CancellationRating
8.0
8,597 reviews
Search Delta flights
United AirlinesPriceFrom $273Free CancellationRating
7.4
9,039 reviews
Search United Airlines flights
SouthwestPriceFrom $278Free CancellationRating
8.1
4,814 reviews
Search Southwest 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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