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PHX - STL

Find cheap flights from Phoenix to St. Louis from $79

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Phoenix to St. Louis departing on 5/20. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sat 4/27
Sat 5/4

Search hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Phoenix to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Phoenix to St. Louis, as well as popular online travel agencies
In the last 7 days travelers have searched 47,584,047 times on KAYAK, and here is why:

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Cheap flight deals from Phoenix to St. Louis

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Phoenix to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
3:45 pm - 8:39 pmPHX-STL
2h 54mnonstop
12:39 pm - 2:07 pmSTL-PHX
3h 28mnonstop
$84Frontier
Find Deal
Wed, Apr 24 - Sat, May 11
4:32 pm - 9:31 pmPHX-STL
2h 59mnonstop
9:26 pm - 10:44 pmSTL-PHX
3h 18mnonstop
$98Frontier
Find Deal
Wed, May 29 - Wed, Jun 5
6:56 pm - 11:56 pmPHX-STL
3h 00mnonstop
8:00 am - 9:24 amSTL-PHX
3h 24mnonstop
$231American Airlines
Find Deal
Tue, May 21 - Wed, May 29
8:40 am - 1:49 pmPHX-STL
3h 09mnonstop
5:25 pm - 10:49 pmSTL-PHX
7h 24m1 stop
$243American Airlines
Find Deal
Fri, Apr 19 - Fri, Apr 19
12:35 am - 10:14 amPHX-STL
7h 39m1 stop
11:10 am - 4:21 pmSTL-PHX
7h 11m1 stop
$260United Airlines
Find Deal
Tue, Apr 23 - Wed, May 1
1:25 pm - 9:14 pmPHX-STL
5h 49m1 stop
6:13 am - 10:20 amSTL-PHX
6h 07m1 stop
$270Delta
Find Deal
Sat, Apr 20 - Tue, Apr 23
12:35 am - 10:14 amPHX-STL
7h 39m1 stop
5:25 pm - 11:28 pmSTL-PHX
8h 03m1 stop
$279United Airlines
Find Deal
Tue, Apr 30 - Mon, May 6
5:45 am - 1:31 pmPHX-STL
5h 46m1 stop
4:00 pm - 10:57 pmSTL-PHX
8h 57m1 stop
$290Delta
Find Deal
Wed, Apr 10 - Sat, Apr 13
11:25 am - 6:40 pmPHX-STL
29h 15m3 stops
11:33 am - 11:04 amSTL-PHX
25h 31m3 stops
$321Spirit Airlines
Find Deal
Wed, Apr 10 - Wed, Apr 17
11:25 am - 6:40 pmPHX-STL
29h 15m3 stops
11:39 am - 9:53 amSTL-PHX
24h 14m2 stops
$347Spirit Airlines
Find Deal
Wed, Apr 10 - Sat, Apr 13

Flights from Phoenix to St. Louis - Travel Insights & Trends

Get data-powered insights and trends into flights from Phoenix to St. Louis to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Phoenix to St. Louis?

The average price of all flights from Phoenix Sky Harbor Intl Airport to St. Louis clicked on KAYAK for each day over the last 12 months.
For Phoenix to St. Louis, Tuesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from St. Louis back to Phoenix, the best deals are generally found on Tuesday, with Thursday being the most expensive.

What is the cheapest month to fly from Phoenix Sky Harbor Intl Airport to St. Louis?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Phoenix Sky Harbor Intl Airport to St. Louis, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Phoenix Sky Harbor Intl Airport to St. Louis is February, where tickets cost $337 on average. On the other hand, the most expensive months are March and November, where the average cost of tickets is $440 and $417 respectively.

How far in advance should I book a flight from Phoenix Sky Harbor Intl Airport to St. Louis?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Phoenix Sky Harbor Intl Airport to St. Louis, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Phoenix Sky Harbor Intl Airport to St. Louis, you should book around 3 days before departure. For the absolute cheapest price, our data suggests you should book 70 days before departure.

Which airlines provide the cheapest flights from Phoenix to St. Louis?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, Frontier offered the best one-way deal for that route, at $79. KAYAK users also found Phoenix to St. Louis round-trip flights on Frontier from $84 and on American Airlines from $231.

Which airlines fly non-stop between Phoenix Sky Harbor Intl Airport and St. Louis?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Phoenix Sky Harbor Intl Airport to St. Louis.
There are 3 airlines that fly nonstop from Phoenix Sky Harbor Intl Airport to St. Louis. They are: American Airlines, Frontier and Southwest. The cheapest price of all airlines flying this route was found with Frontier at $108 for a one-way flight. On average, the best prices for this route can be found at Frontier.

How many flights are there between Phoenix Sky Harbor Intl Airport and St. Louis per day?

Each day, there are between 6 and 12 nonstop flights that take off from Phoenix Sky Harbor Intl Airport and land in St. Louis, with an average flight time of 2h 53m. The most common departure time is 12:00 pm and most flights take off in the morning. Each week, there are 72 flights. The most frequent day of departure is Sunday, when 17% of all weekly flights depart. The fewest flights depart on a Tuesday.

Which cabin class options are there for flights between Phoenix Sky Harbor Intl Airport and St. Louis?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 3 cabin class options for the route. These are First, Business and Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from Phoenix to St. Louis take?

Nonstop flights from Phoenix generally make it to St. Louis in 2h 54m. The flying distance between the two cities is 1,258 miles.

What’s the earliest departure time from Phoenix to St. Louis?

Early birds can take the earliest flight from Phoenix Sky Harbor Intl Airport at 5:05 am and will be landing in St. Louis at 10:00 am.

What’s the latest departure time from Phoenix to St. Louis?

If you prefer to fly at night, the latest flight from Phoenix Sky Harbor Intl Airport to St. Louis jets off at 8:55 pm and lands at 1:45 am.

Good to know

Low season

February

High season

June

Cheapest flight

$79
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 1% increase in price.
Flight from Phoenix to St. Louis

When to book flights from Phoenix to St. Louis

Are your dates flexible? Find out the best times to travel from Phoenix to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Phoenix to St. Louis flights

  • Where can passengers sleep at Lambert International Airport?

    Seating with armrests is available in several locations across the airport, most of which are in Terminal 2 and Concourse C. It is recommended by reviewers that you bring a sleeping bag, travel blanket, or additional layers of clothing with you if you want to sleep at this airport since it is believed to be very chilly.

  • Are there any kid-friendly amenities at Lambert International Airport?

    Near gate C3 at STL is a play area designated specifically for children. This is an educational play exhibit with a transportation-based theme that has a child-sized facsimile of a light rail train and a MetroLink train as well as a child-sized airplane and air traffic control tower.

  • How can I get to downtown St. Louis from STL airport?

    If you are traveling downtown, using Metrolink is an option that is not only speedy but also affordable and easy. The St. Louis International Airport (STL) is about 15 miles from the city's central business district. It takes around 19min to complete.

  • How do I get from downtown Phoenix to PHX airport?

    No rail can take passengers directly from downtown Phoenix to the terminal building at the Phoenix airport. To begin, you will need to ride a Valley Metro Rail train to the rail station at 44th Street and Washington and then transfer to the free PHX Sky Train® to go to Terminal 3 or 4. The entire amount of time spent traveling is around half an hour.

  • What is the cheapest flight from Phoenix Sky Harbor Intl Airport to St. Louis?

    In the last 3 days, the lowest price for a flight from Phoenix Sky Harbor Intl Airport to St. Louis was $79 for a one-way ticket and $84 for a round-trip.

  • Do I need a passport to fly between Phoenix and St. Louis?

    No, a passport isn't needed to fly from Phoenix to St. Louis. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Phoenix to St. Louis?

    On your way to St. Louis, you’ll fly out from Phoenix Sky Harbor Intl. You’ll be landing at Lambert-St Louis.

  • Which airlines offer Wi-Fi service onboard planes from Phoenix to St. Louis?

    American Airlines, Delta, and JetBlue offer inflight Wi-Fi service on the Phoenix to St. Louis flight route.

  • Which aircraft models fly most regularly from Phoenix to St. Louis?

    The Boeing 737-800 is the aircraft model that flies most regularly on the Phoenix to St. Louis flight route.

  • Which airline alliances offer flights from Phoenix to St. Louis?

    oneworld is the only airline alliance operating flights between Phoenix and St. Louis.

  • On which days can I fly direct from Phoenix to St. Louis?

    There are nonstop flights from Phoenix to St. Louis on a daily basis.

  • Which is the best airline for flights from Phoenix to St. Louis, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Phoenix to St. Louis are Delta and United Airlines. With an average price for the route of $424 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $512 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Phoenix to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Phoenix to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Phoenix to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Phoenix is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Phoenix to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Phoenix with another airline. Booking your flights between Phoenix and STL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Phoenix to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Phoenix up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from PHX to St. Louis

  • Looking for a cheap flight? 25% of our users found flights on this route for $148 or less one-way and $152 or less round-trip.
  • Both within and outside of the terminals of Sky Harbor International Airport (PHX) are designated locations for pets to relieve themselves. The airport has eight locations for dogs to relieve themselves, drink water, and stretch their legs during layovers (mitts for cleaning up provided).
  • Is your journey to Phoenix taking longer than you thought, and do you need to keep your vehicle at Sky Harbor International Airport for a longer period than you first planned? The covered parking garage and the open parking lot are available to passengers who need to keep their automobiles at PHX for an extended period.
  • No matter which airline a customer is flying with, they are eligible to get a reduced rate to enter any of the lounges located in PHX. This is the greatest choice if you need to connect planes, if your trip was canceled, if you need to check in early in the morning, or if you want breakfast.
  • Phoenix Sky Harbor International Airport and Lambert International Airport (STL) provide services to assist guests who may have difficulties moving about the airport. Feel free to inquire about the assistance in renting a wheelchair and navigating the airport either before or after you go on your vacation. If you wish to use these services, you must give the airline plenty of notice in advance.
  • It is highly advised to pick up your rental automobile from Lambert International Airport as soon as you touch down. Passengers do not have to wait for a shuttle to a far-off place since there is a vehicle rental counter at the airport. Time is of the essence when it comes to renting an automobile.
See more tips

Prefer to fly non-stop from Phoenix to St. Louis?

Find which airlines fly direct from Sky Harbor Intl to Lambert-St Louis, which days they fly and book direct flights.

Nonstop departures

Phoenix Sky Harbor Intl to Lambert-St Louis

Monday

Alaska Airlines, American Airlines, Frontier, +1 more

Alaska Airlines, American Airlines, +2 more

Tuesday

Alaska Airlines, American Airlines, Southwest

Alaska Airlines, American Airlines, +1 more

Wednesday

Alaska Airlines, American Airlines, Frontier, +1 more

Alaska Airlines, American Airlines, +2 more

Thursday

Alaska Airlines, American Airlines, Southwest

Alaska Airlines, American Airlines, +1 more

Friday

Alaska Airlines, American Airlines, Frontier, +1 more

Alaska Airlines, American Airlines, +2 more

Saturday

Alaska Airlines, American Airlines, Frontier, +1 more

Alaska Airlines, American Airlines, +2 more

Sunday

Alaska Airlines, American Airlines, Southwest

Alaska Airlines, American Airlines, +1 more

See more direct flights

Nonstop returns

Lambert-St Louis to Phoenix Sky Harbor Intl

Monday

Alaska Airlines, American Airlines, Frontier, +1 more

Alaska Airlines, American Airlines, +2 more

Tuesday

Alaska Airlines, American Airlines, Southwest

Alaska Airlines, American Airlines, +1 more

Wednesday

Alaska Airlines, American Airlines, Frontier, +1 more

Alaska Airlines, American Airlines, +2 more

Thursday

Alaska Airlines, American Airlines, Southwest

Alaska Airlines, American Airlines, +1 more

Friday

Alaska Airlines, American Airlines, Frontier, +1 more

Alaska Airlines, American Airlines, +2 more

Saturday

Alaska Airlines, American Airlines, Frontier, +1 more

Alaska Airlines, American Airlines, +2 more

Sunday

Alaska Airlines, American Airlines, Southwest

Alaska Airlines, American Airlines, +1 more

See more direct flights
See more direct flights

Top 5 airlines serving from Phoenix to St. Louis

Need help choosing which airline to fly with from Phoenix to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to KAYAK reviews.
8.0
DeltaOverall score based on 11418 reviews
80entertainment
86crew
75food
79comfort
81overall
82boarding
Airline reviews

Carly the flight attendant was extremely helpful and very accommodating to passengers on the flight from what I noticed. Couldn't be more satisfied with the service and assistance from Delta's flight attendant, Thanks again Carly!!

Read more about Delta

Carly the flight attendant was extremely helpful and very accommodating to passengers on the flight from what I noticed. Couldn't be more satisfied with the service and assistance from Delta's flight attendant, Thanks again Carly!!

I didn’t not like that I could not select my seat and ended up with the worse seat.

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Delta did an awful job w logistics at DTW. Missed connection. We were there an hour early. SUCKED

Inflight entertainment stopped working as we taxi to runway and never worked again until landing and taxi to gate. Grrrr

Had to run to make it only to have the flight delayed to wait for all the late connectors Second drink service skipped up

Boarding was a sh!t show. JFK BOARDING was awful. The agent called three sections at a time Clogging the area then yelling at people to not block the walk way. How are you going to call delta one , premium select and comfort plus at once and the yell at highest paying passengers. Need to do a lot better and the flight attendants in the galley need to understand that their voices travel. They were talking about others and everyone in the cabin heard them

Uncomfortable seats on 14 hour flight. Mediocre food. On time and great crew.

MSP to Atlanta was much better than Atlanta to St. Kitts. Paid $180 each for myself and wife for Delta comfort from Atlanta to St. Kitts. Seats were more narrow and obviously old and worn out. Tailbone is killing me. Seat would not recline. Seats behind reclined and we were not an exit row or in front of an exit row. Entertainment did not work in that the movie jumped forward and back and there was no audio. The plug in the arm rest was loose. Flight attendant tried “resetting” the video for my seat but no good. She never checked back. Someone else near me had the same issue. Touch screen was unresponsive. No where near as comfortable as MSP to Atlanta flight. 3 plus hrs. flight time without the basic amenities and not even remotely close to comfortable but paid for Comfort plus. I will be very disappointed if I have the same on my return “Comfort Plus” flight St. Kitts to Atlanta. At the very least my wife and I should be refunded for round trip “Comfort Plus” charges. Please feel free to contact me directly for more details.

public website still broken for years randomly blocking browsers with privacy options active after loading a page maybe once. check-in on laptop was almost impossible but eventually randomly worked. had to print pass at airport since couldn't get back in to load digital pass on mobile firefox or chrome. red eye flight so smooth onboarding, plenty of room to spread out, easy offboarding. onboard wifi instructions mention vpn can cause problems connecting but fails to also mention private dns. no printed or built in menu list, seems weird to require personal device to point at qr code link for menu which does not even allow direct ordering. people with health condition risk related dietary restrictions trying to avoid for example cholesterol and sugar are left guessing what they can order either way without nutritional info highlights (cranberry juice was minute maid cocktail with as much suger as typical can of soda). tap to pay wasn't working and always seems sketchy to manually enter card info. good movie variety, so limited tv was okay.

Plane didn’t even make it off the ground. We all had to get off and walk to a different terminal (lots of confusion) to get on a different plane. Landed fairly late, connections missed.

the head jack on my seat didn't work and the power outlet didn't work for my seat

All good except paid for wifi that did not work

Left 2 hours later for delayed I had to take care a kid with special need since people don’t want to move to accommodate the rest of the family. . It wasn’t bad but that made me upset that people can be that selfish.

The crew were really great, but the 4 hour delay in small chunks was the worst.

They did get us booked on a later flight, but it made us miss our connecting flight. So, we had to stay and another state overnight with no luggage or clothes. Because they kept our luggage at airport for next flight on the next day.

The leg space between me and the seat in front of me was excellent.

That flight was smooth, and staff we courteous. it was a full flight so very tight. The boarding through security was not properly controlled. it was rushed and the scanning process for our bags, etc. was pilling up at the other end with no time to empty our belonging my personal items almost toppled over on the floor if i hadn't caught it rapidly. Was it just that time, or always like this - cant say. other than that all else was fine.

For a 22 minute flight all you expect is for it to be safe and comfortable

Good movies, iffy pay WiFi, food ok- on time though and that was great!

While I received notice that AA 478 was delayed, the flight departed PHX and arrived PHL more than two hours late. The first class cabin service was mediocre; there were no pre-departure beverages offered; there were no warm mixed nuts served with cocktails; there was no personal greeting to me as an Executive Platinum member by the first class flight attendant. While the flight operated safely, its arrival at 0219 in the morning in PHL ended a very long day. I do not feel that American provided first class service.

Absolutely filthy flight and not equipped for a trans US

Turn on the heat. Flight was way too cold from Arizona to Chicago.

Poor on time performance. Flight was delayed due to a lightbulb. No updates from the pilot. Plane was dirty and hot, AC didn't work well.

Being back games on the in-flight entertainment. Also your flight attendants need a break, raise, or overall attitude adjustment.

Overall pleasant was delayed and caused transportation issue when landing

Good over all but my flight from. Miami to Barbados the airplane was very dirty like I have never seen before. It looked like that plane hasn’t been cleaned in a long time and I fly about one time a month.

Flight operated on tie. However, the in-flight entertainment was inoperative. No special recognition as an Executive Platinum member.

They attended to my needs as I couldn't walk and they provided a wheelchair for me.q

Flight to Phoenix was delayed 1 hour and was not weather related. Flight Denver was delayed 2.5 hours and again was not weather related as the plane came from San Francisco.

Beware of all the extras. Nickel and dimed. Everything was extra. It turns a $90 fare in to a $400 fair quite easily.

I flew from Las Vegas to Reno Nevada. Airfare was 60 $ round trip. I needed to bring my skis and boots.that was going to be $111 to bring them. Upon arrival they informed me that anyone who has skis more than 62 inches long is charged an oversize fee of $150 each way. Almost everyone over 5 foot five has skis over 62 inches long. So I paid $60 for the flight and $411 to bring my skis with me! WTF

Didn’t make the connecting flight due to a delay on our first flight.

I like the price. I did not like the seats: very little space and not reclining.

Flights are great except for the ticketing service on the terminal.. Too little employees taking care for lots of flights.

The seats were very uncomfortable. The crew was very polite and helpful.

The airplane was extremely hot the air conditioner wasn’t working I

The text told me it was changed to Terminal E and Gate D5. But with no one on site to ask questions there was confusion on where to go as all the gates were E's. Then we took the skyline to the D area. We left to get something to eat. No announcement was made but my daughter happened to asked and they told her our gate was moved to D12. I will not fly Spirit again.

Seats horrible. No way of getting comfortable . But flight ran smoothly

I had a phobia for Spirit and now is 100% confirmed. Flight delayed, missed connecting flight and staying overnight . Now not even able to get my boarding pass until I’ll get into the airport. It’s really really bad at this point

First time flying Frontier, I am not sure the Ala Carte menu of options is for me.

Flight was delayed on the runway for 40 minutes the crew did not even offer even water to passengers to compensate for the flight delayed. The flight was delayed due to aircraft mechanical issues. Worst customer service ever

See my previous comment which is mostly about our flight from Phoenix to SFO

Terrible. Initially we were shocked by the outrageous baggage fees we needed to pay at check in for our so-called "discounted, economy flight" - we paid over $200 (!!) for one check-in and 2 carry-on bags - this felt like a real bait-and-switch" scam. Our flight from Phoenix to SFO was delayed by 4 hours. Multiple apparent causes (from needing to make space for other planes that were landing late to problem with cabins pressure system, and whatever...). After de-boarding and re-boarding we still waited at least an hour on a cramped, poorly ventilated plane before take-off. Seats were cramped, uncomfortable - did not recline at all. No water until we were flying for a while. No complimentary snacks. Upon arrival at SFO my luggage was sent upstairs to the check-in counter. The customer service person there refused to let me examine a bunch of bags that were sitting on a nearby cart because it was "behind the counter", rather made me wait until another attendant did an exhaustive and failed (?computer) search, came back and told me they were unable to locate my bag. I asked her to look on the cart, lo and behold, there was my bag just a few feet away! Missed my choir rehearsal that evening due to all of the delays. One more thing, a few days later my husband and I tested positive for Covid. Since we both are fully vaccinated, careful about masking and have never had Covid previously, we will never know, but suspect we may have acquired the infection during the prolonged wait on your poorly ventilated plane (person in the row in front of us was coughing). After registering a complaint, we received a measly $50 voucher for future flights. Needless to say we have no intention of flying with Frontier Airlines ever again.

I liked getting off the plane. Everything else was well below standards. Not even offering a bag of peanuts for free for a 4 hours flight is ridiculous.

The whole experience was bad. Didn't know no complimentary drinks or snacks. $4.39 for a soda is ridiculous even a bottle water. A carry on was $74 just crazy. I don't think I will take this airline ever again. Very bad

Delayed...attendants checked every single bag and item for sizes before boarding.

There was no wifi, there was no usb charger on the planes Frontier lowered the weight limit on suitcases from 50 to 40 pounds Frontier now charges for a seat...really? If i don't pay for a basic seat, do i stand the whole flight? Frontier now charges for the carry on, just like for the checked suitcase The bundle pricing is way over priced.

I am HIGHLY unhappy with the amount of money I spent on the flight. Paid in advance only to find the flight at a discount price a week or so before the flight. I will not fly frontier again and have bad mouthed your business since to anyone I have spoken with about flying (which has been many a people). Crew was mediocre and instead of moving me to a spot where I could gain some leg room they sat their flight attendant there. Won’t be flying frontier in the future.

They changed my flight and did not want to accommodate me or try to help me in any way. They do not care about their customers.

Book cheap flights from Phoenix to St. Louis

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Phoenix to St. Louis found on KAYAK in the last 72 hours.
5/20Mon
nonstopFrontier
3h 01mPHX-STL
$79
5/1Wed
1 stopFrontier
15h 27mPHX-STL
$81
5/20Mon
3 stopsSpirit Airlines
18h 57mPHX-STL
$127
4/19Fri
1 stopUnited Airlines
7h 42mPHX-STL
$135
4/9Tue
nonstopAmerican Airlines
3h 09mPHX-STL
$151
4/30Tue
1 stopUnited Airlines
7h 39mPHX-STL
$165
5/30Thu
nonstopAmerican Airlines
3h 03mPHX-STL
$166
4/24Wed
3 stopsSpirit Airlines
28h 09mPHX-STL
$182
6/7Fri
1 stopDelta
7h 25mPHX-STL
$219
6/6Thu
1 stopDelta
7h 25mPHX-STL
$301

Search by stops

Search by airline

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Last minute flights from Phoenix to St. Louis

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Phoenix to St. Louis that are departing in the next 10 days.
4/2Tue
multi-stopFrontier
10h 28mPHX-STL
4/7Sun
multi-stopFrontier
9h 54mSTL-PHX
$247
4/1Mon
multi-stopFrontier
11h 38mPHX-STL
5/1Wed
nonstopFrontier
3h 28mSTL-PHX
$254
3/30Sat
multi-stopFrontier
8h 16mPHX-STL
4/13Sat
nonstopFrontier
3h 28mSTL-PHX
$270
3/30Sat
nonstopAmerican Airlines
2h 57mPHX-STL
4/13Sat
nonstopAmerican Airlines
3h 26mSTL-PHX
$426
3/29Fri
multi-stopUnited Airlines
5h 13mPHX-STL
4/8Mon
multi-stopUnited Airlines
8h 40mSTL-PHX
$436
4/2Tue
multi-stopUnited Airlines
7h 39mPHX-STL
4/6Sat
multi-stopUnited Airlines
8h 15mSTL-PHX
$462
4/1Mon
nonstopAmerican Airlines
2h 54mPHX-STL
5/1Wed
nonstopAmerican Airlines
3h 26mSTL-PHX
$485
3/31Sun
multi-stopDelta
5h 51mPHX-STL
4/15Mon
multi-stopDelta
6h 07mSTL-PHX
$544
3/29Fri
multi-stopSpirit Airlines
23h 46mPHX-STL
4/8Mon
multi-stopSpirit Airlines
22h 43mSTL-PHX
$902
3/29Fri
multi-stopSpirit Airlines
23h 46mPHX-STL
4/1Mon
multi-stopSpirit Airlines
22h 43mSTL-PHX
$952

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Phoenix - St. Louis Flights

Departure:

Phoenix (PHX)United States

Destination:

St. Louis (STL)United States

Return flight deals:

St. Louis - Phoenix

Cabin classes:

$1,276
$1,108
$1,307
$70