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STL - PHX

Find cheap flights from St. Louis to Phoenix Sky Harbor Airport from $29

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Phoenix departing on 5/15. 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
Wed 6/5
Wed 6/12

Search hundreds of travel sites at once for deals on flights to Phoenix Sky Harbor Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Phoenix, 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 St. Louis to Phoenix, as well as popular online travel agencies
In the last 7 days travelers have searched 42,830,901 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from St. Louis to Phoenix (STL-PHX)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Phoenix 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
4:39 pm - 6:07 pmSTL-PHX
3h 28mnonstop
5:50 pm - 10:49 pmPHX-STL
2h 59mnonstop
$58Frontier
Find Deal
Wed, May 15 - Sat, May 18
11:41 pm - 12:58 amSTL-PHX
3h 17mnonstop
4:32 pm - 9:31 pmPHX-STL
2h 59mnonstop
$68Frontier
Find Deal
Sat, May 18 - Mon, May 20
1:55 pm - 11:00 amSTL-PHX
23h 05m1 stop
4:44 pm - 9:43 pmPHX-STL
2h 59mnonstop
Wed, Jun 5 - Sat, Jun 8
11:36 am - 10:20 amSTL-PHX
24h 44m1 stop
12:41 pm - 3:14 pmPHX-STL
24h 33m1 stop
$133Spirit Airlines
Find Deal
Wed, May 29 - Sun, Jun 2
1:55 pm - 11:00 amSTL-PHX
23h 05m1 stop
3:06 pm - 8:00 pmPHX-STL
2h 54mnonstop
Wed, Jun 19 - Sat, Jun 22
11:36 am - 10:20 amSTL-PHX
24h 44m1 stop
11:25 am - 10:46 amPHX-STL
21h 21m1 stop
$140Spirit Airlines
Find Deal
Wed, May 15 - Tue, May 21
8:00 am - 9:24 amSTL-PHX
3h 24mnonstop
6:56 pm - 11:50 pmPHX-STL
2h 54mnonstop
$141American Airlines
Find Deal
Tue, Jun 4 - Tue, Jun 11
8:00 am - 9:24 amSTL-PHX
3h 24mnonstop
6:56 pm - 11:56 pmPHX-STL
3h 00mnonstop
$151American Airlines
Find Deal
Wed, May 22 - Sun, May 26
6:11 am - 11:14 amSTL-PHX
7h 03m1 stop
1:25 pm - 9:24 pmPHX-STL
5h 59m1 stop
$216Delta
Find Deal
Tue, May 28 - Sat, Jun 1
6:11 am - 11:14 amSTL-PHX
7h 03m1 stop
5:31 pm - 12:46 amPHX-STL
5h 15m1 stop
$228Delta
Find Deal
Sat, May 18 - Mon, May 20

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

Get data-powered insights and trends into flights from St. Louis to Phoenix 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 St. Louis to Phoenix Sky Harbor Airport?

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from St. Louis to Phoenix Sky Harbor Intl Airport, 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 St. Louis to Phoenix Sky Harbor Intl Airport is May, where tickets cost $247 on average. On the other hand, the most expensive months are March and December, where the average cost of tickets is $418 and $400 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from St. Louis to Phoenix Sky Harbor Intl Airport, 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 St. Louis to Phoenix Sky Harbor Intl Airport, you should book around 3 days before departure. For the absolute cheapest price, our data suggests you should book 83 days before departure.

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

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The best deals for a one-way ticket found by KAYAK users over the last 3 days were on Frontier ($29) and Spirit Airlines ($73). The cheapest round-trip tickets were found on Frontier ($58) and Spirit Airlines ($133).

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

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from St. Louis to Phoenix Sky Harbor Intl Airport.
There are 3 airlines that fly nonstop from St. Louis to Phoenix Sky Harbor Intl Airport. They are: American Airlines, Frontier and Southwest. The cheapest price of all airlines flying this route was found with Frontier at $78 for a one-way flight. On average, the best prices for this route can be found at Frontier.

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

Each day, there are between 7 and 14 nonstop flights that take off from St. Louis and land in Phoenix Sky Harbor Intl Airport, with an average flight time of 3h 17m. The most common departure time is 2:00 pm and most flights take off in the morning. Each week, there are 79 flights. The most frequent day of departure is Wednesday, when 18% of all weekly flights depart. The fewest flights depart on a Saturday.

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

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 St. Louis to Phoenix Sky Harbor Airport take?

Direct flights cover the 1,258 miles separating St. Louis to Phoenix Sky Harbor Airport in about 3h 11m.

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

Early birds can take the earliest flight from St. Louis at 5:15 am and will be landing in Phoenix Sky Harbor Intl Airport at 6:30 am.

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

If you prefer to fly at night, the latest flight from St. Louis to Phoenix Sky Harbor Intl Airport jets off at 11:41 pm and lands at 12:58 am.

Good to know

Low season

August

High season

March

Cheapest flight

$29
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly with an average 15% increase in price.
Flight from St. Louis to Phoenix Sky Harbor Airport

When to book flights from St. Louis to Phoenix

Are your dates flexible? Find out the best times to travel from St. Louis to Phoenix 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 St. Louis to Phoenix Sky Harbor Airport flights

  • Can I withdraw money at STL?

    If you’d like to withdraw some cash at STL, you’ll be able to do so with ease, given that this airport is full of operational ATMs. The ATMs are located near Gate A10 in Concourse A, the Mid-Level Stage of Terminal 1, Gate C15 in Concourse C, Gate E20 in Terminal 2, and the entrance doors of Terminal 2.

  • What is the most convenient way to travel from St. Louis to STL?

    The most convenient way to travel from St. Louis to STL is by taxi. This is because, aboard one of the taxis present in St. Louis, you’ll be able to travel comfortably with all your luggage from your preferred pickup point to the entrance of STL’s terminals.

  • Does PHX have a medical center?

    If you feel a bit unwell while on your flight from STL to PHX, before departing PHX, you can receive a quick medical check-up at XpresCheck. Located on Level 3 of Terminal 4, this clinic boasts well-trained professionals.

  • Does PHX have a chapel?

    In case you’d like to pray, meditate, or gather your thoughts before departing PHX, you’ll be able to do so, given that PHX has a chapel on Level 3 of Terminal 4. It’s worth mentioning that you can pray at this chapel, regardless of your faith, as it is an interfaith chapel.

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

    In the last 3 days, the lowest price for a flight from St. Louis to Phoenix Sky Harbor Intl Airport was $29 for a one-way ticket and $58 for a round-trip.

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

    No

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

    When flying out of St. Louis you will be using Lambert-St Louis. You will be landing at Phoenix Sky Harbor Airport, also known as Phoenix Sky Harbor Intl.

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

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

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

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

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from St. Louis to Phoenix are Delta and United Airlines. With an average price for the route of $406 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 $511 and an overall rating of 7.4.

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

    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 St. Louis to Phoenix Sky Harbor Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Phoenix Sky Harbor Airport from St. Louis 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 St. Louis to Phoenix Sky Harbor Airport?

    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 Phoenix Sky Harbor Airport with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and PHX 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 St. Louis to Phoenix Sky Harbor Airport?

    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 Phoenix Sky Harbor Airport from St. Louis 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 STL to Phoenix Sky Harbor Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $118 or less one-way and $251 or less round-trip.
  • St. Louis Lambert International Airport (STL) usually has security checkpoints characterized by lengthy lines. Time and again, passengers have missed their flights at this airport after being unable to go through its security checkpoints in time for their flights. To avoid such a fate, on the date you’re scheduled to fly to Phoenix, it’s in your best interest to reach this airport at least 2h before your flight.
  • If you require special in-flight services on your flight from STL to Phoenix Sky Harbor International Airport (PHX), you should contact and inform the airline you intend to travel with of the special assistance services you’ll require. It’s advisable that you do so when booking your flight or at least 72h before your flight.
  • STL features several on-site parking garages. This airport is also surrounded by a number of off-site garages. If you’d like to leave your car in a parking garage you can easily get to from the airport upon your return from your trip, you should leave it in an off-site garage, as off-site garages charge cheaper rates than the on-site garages.
  • If you travel to PHX with your pet, you can take advantage of the numerous designated pet relief areas at the airport. Some of these pet relief areas are outdoors, while others are indoors. The outdoor ones are located west of Terminal 3, outside the baggage claim area of Terminal 4, and at the northwest corner of the 44th Street PHX Sky Train station.
  • At PHX, you can easily rent a car, as the airport features a Rental Car Facility that houses branches for dependable car rentals like Alamo, Avis, Budget, Dollar, Enterprise, National, Payless, SIXT, and Thrifty. To get to this rental car facility, situated south of the airport’s complex, you will board an airport shuttle.
See more tips

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

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

Nonstop departures

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

Nonstop returns

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
See more direct flights

Top 5 airlines serving from St. Louis to Phoenix

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Phoenix. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Phoenix? 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 verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10826 reviews
8.2Boarding
7.9Comfort
7.4Food
8.6Crew
8.0Entertainment
Airline reviews

Very frustrated with boarding gate crew. She announced the plane was small and they would be limiting us to one item to carry on. Not a problem for me as I understand the tiny planes have limited space!! Not the case here! It was a rather large plane and had plenty of room for bags! So because I don’t want to be one of “those people” who ignores the request to check a carry on I did so asking if I would be able to pick it up at the bottom of the ramp on arrival in Knoxville to which she responded “yes”! Then I watched as every other passenger held onto their 2 items and boarded!! Then when we arrived in Knoxville our 2 carry ons had been put with all the other luggage and we had to go to baggage pick up and wait for all the big checked bags to come off the carousel! So she lied!! Frustrating. Next time I won’t be so nice!

8.0 ExcellentCynthia, May 2024ATL - TYS
Read more about Delta reviews

Very frustrated with boarding gate crew. She announced the plane was small and they would be limiting us to one item to carry on. Not a problem for me as I understand the tiny planes have limited space!! Not the case here! It was a rather large plane and had plenty of room for bags! So because I don’t want to be one of “those people” who ignores the request to check a carry on I did so asking if I would be able to pick it up at the bottom of the ramp on arrival in Knoxville to which she responded “yes”! Then I watched as every other passenger held onto their 2 items and boarded!! Then when we arrived in Knoxville our 2 carry ons had been put with all the other luggage and we had to go to baggage pick up and wait for all the big checked bags to come off the carousel! So she lied!! Frustrating. Next time I won’t be so nice!

It was a good experience except when boarding a female flight attendant did not go out of her way to assist my teenage daughters in finding space for their carry-ons after their compartments were full.

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

Checking in at the airport the agent only booked the first keg of my trip and had my checked luggage going to the airport with a layover! Never was issued a boarding pass for the second leg or received sticker fir my checked bag. All was well in the end! Delta agents helped to resolve the situation!!!

Delayed due to an ill passenger after loading. Not preventable on Delta's part. Was in first class. The seats are becoming worn and detaching from their velcro attachments. Only got snacks on flight. The attendant was not the friendliest.

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

From Atlanta to Cabo I would have hoped on a plane that size I would have been able to breathe and wiggle my feet a little! The leg room in that plane is non existent and I am only 5”4’. And the air vent either wasn’t working very well or just could not blow air from the ceiling to the seat area as I was suffocating through the entire flight! And please don’t say I would have been more comfortable in first class because I cannot afford those rates and have always travelled Main Cabin without issues !

The pilots were good. Disappointing when planes don't have electrical ports

I liked the piloting of the aircraft. Very disappointed about lack of electrical ports. Also, although a short flight. there was enough time to hand out snacks to comfort + seats as was done for first class.

I had a wonderful experience flying with delta. The gentleman taking care of us on our flight was so nice, accommodating, and attentive. He always was smiling and giving pins to the kids which made me smile. The flight was quick too and without turbulence. Thank you for the great flying experience.

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

The plane was dirty and the in seat air wasn't blowing as planes usually do.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

All flights were on time and boarding was issue free

Terrible! The plane was old and you are required to connect your own device to their Wi-Fi rather than have entertainment options in the back of the seat in front of you. The Wi-Fi went out during the flight and there was only one plug for the devices every two seats. Three out of five surrounding my family did not work. The seats and spaces under them were so small I could not fit my backpack, which I’ve always brought on flights and fit before no problem. The crew were unpleasant and patronizing.

Great! The plane was decently sized and comfortable. The staff was nice and there was great in flight entertainment

Water service would be great. The way they board is terrible. Slow passengers first😂😂 They need to smart up a bit

Our original business class flight was cancelled so we not only downgraded but we were also spread out across the plane not sitting together in separate middle seats. My poor kids were scared and couldn’t see me on the flight and the crew wasn’t sensitive to the situation and what the airlines did to us. Very dissatisfied with United airlines.

All four American Airlines flights I took in last seven days were delayed. Caused me loads of problems, missed meetings, loss of time and money.

American Airlines continues to price it can provide the least comfortable passenger experience in the air. This legacy carrier rivals the budgets for both terrible seats and inadequate amenities. I am a 5’7” woman who is not wider than a coach seat (even on these narrow bodied aircraft). My 3.5 hour flight was terribly uncomfortable because the leg room is inadequate (my knees hit the seat on front of me even when it was not reclined); the seat barely reclines; and the foam padding is worn thin to the extent one can feel the metal supports of the seat. Add to this the fact that the aisle is super narrow, so that the drink cart literally scrapes the arm rest of the aisle seat. It’s basically torture.

Plane took off without me, my stepdad and a dozen other passengers. It went from an hour delay to boarding in 15 montures without notifying anyone. Names were not called overhead. Now I’m missing a day of work and stuck in Charolette overnight paying for a hotel and Ubers out of pocket

Flight from SBP to DFW 1. They rerouted us through PHX 2. Delayed flight out of SBP for 3 hrs so we missed our connection Downgrade on rerouted flight. Back of the plane, center seats, didn't sit together 4. Return flight out of DFW same exact thing. Delayed, missed connection, Downgrade + they lost our luggage! A complete mess.

after boarding on phx to sjd, crew discovered that one of the megaphones was either out of date or not working. It took 90 minutes to get a replacement and do the "paperwork." That is really unacceptable. Why wasn't the megaphone problem discovered before boarding? Is it part of normal maintenance check? who is responsible for checking. How can paperwork take that long? Fortunately, SJD was final destination for most travelers so very few if any passengers had to miss connections.

Flight From PHX to CVG was on time, very professional staff

Excellent- plan was barely populated. I cannot remember a flight where I was able/encouraged to stretch out!

Flight attendants used to be nice to people. And any flight over 5 hours should have some kind of food other than tiny pretzels and one drink comped.

just overall disappointing, not a treat to travel these days....paying for Main Cabin Extra was not worth it.

The usual wait at Columbus once you land to get to an open gate (20 minutes) and then the usual 30 minutes for your luggage to appear.

Terrible… missed our flight due to ridiculously long time to go thru baggage check-in!

The crew was not great or professional. It seemed like they didn't really want to be there. A true lack of effort for accommodating customers.

Everything was really good but the seats are not very comfortable.

I paid for WiFi, but it (WiFi) was very very slow, will never take again! Impossible open Utube 😤😤😤

I had no legroom, although I paid for extra legroom. I could barely put my bag in front of my feet and under the seat. The Wi-Fi was horrible. In fact the flight attendant said that they had to reboot it and see if it was going to work and never did.

The guy with severe body odor sat next to me. For the whole duration of the flight it was a torture. The airline should have better policy on limiting people with bad body odor to board the flight. Passengers should not be the ones to endure bad odor for the whole duration of the flight. The airline should be e the one to ensure decent air quality for ever passenger.

Overall it was a miserable experience... I will never fly spirit for more than a 3 hour flight or overnight.

The boarding attendant was slightly rude when I asked about checking our stroller. Made me feel like I was bothering her.

My wife and I are both handicapped and at boarding they upgraded us to a seat closer to the front rather than all the way towards the back. Much appreciated.

Not much seat room, but that was unexpected. But the seat headrest was very uncomfortable.

Not good 😐 Over priced baggage fees Small hard seats No wifi or entertainment options 😕

Didn't like anything!! Horrible flight. Small seating area and hard seats. Butt was sore after 2 hour flight to Seattle No entertainment or free refreshments No wifi or USB charging receptacles to charge phone entoute like other airliners Luggage rates were 3 times as much as competitors. Difficult to navigate online luggue process to pre pay before flight Overall bad experience WILL NEVER RIDE OR RECOMMEND FRONTIER TO FRIENDS OR FAMILY MEMBERS!!! THIS IS A SHAME!! MOST MESERIBLE FLIGHT OF MY LIFE!! AND I THOUGHT SPIRIT WAS 👎 YOU GOT THEM BEAD HANDS DOWN!!

Flight was a little late taking off. Seats are too upright, no ports to charge devices, no wifi, no entertainment

Six hour delay. Poor customer service. No voucher. Bad communication. Missed important appointments.

Our flight was delayed an hour, then when we got to board our flight finally, we were waiting in our seats for take off for 45 minutes before it was communicated that there was a maintenance issue therefore we waited on the plane for over an hour while that was resolved. We did not get to Phoenix until almost 3 hours after we were originally supposed to. This was the first and last time I will be flying Frontier.

Flight was canceled with little warning. Flight was rebooked through Ontario, California and connecting flight was delayed by over three hours. Frontier is living up to their Greyhound of the skies reputation for sure.

I purchased a carry on bag online…was supposed to cost $72 but after a whole slew of bs charges, the total was over $175.00. Because of these hidden charges, I will not even consider flying Frontier ever again. It’s just not worth the hassle. I’m scratching this company off my list forever.

Flight was OK. Seats were good no cell phone charges on the plane no TVs or entertainment.

There were 3 leg for the trip and each leg was delayed by 90 minutes or more. The boarding process takes forever with people waiting on the jetway even though most folks do not have carry-on. The whole process is poorly managed.

Flight cancelled and was told by a rude gate agent that they don’t accommodate on other airlines. Had to wait 5 hours for a connecting flight that had a 7 hour layover. Would not allow bags to be checked early so we couldn’t go through security .Had to rent a car for the afternoon to store bags and get a meal. Also incurred a hotel fee. No apology or reason given for the cancellation- just rudeness.

Book cheap flights from St. Louis to Phoenix

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Phoenix found on KAYAK in the last 72 hours.
5/15Wed
nonstopFrontier
3h 28mSTL-PHX
$29
5/20Mon
nonstopFrontier
3h 17mSTL-PHX
$39
6/5Wed
1 stopSpirit Airlines
23h 05mSTL-PHX
$73
5/27Mon
1 stopSpirit Airlines
20h 27mSTL-PHX
$92
6/15Sat
1 stopUnited Airlines
7h 05mSTL-PHX
$104
5/23Thu
1 stopDelta
6h 23mSTL-PHX
$108
5/16Thu
nonstopAmerican Airlines
3h 24mSTL-PHX
$111
5/11Sat
1 stopDelta
6h 23mSTL-PHX
$150
5/15Wed
1 stopAmerican Airlines
5h 24mSTL-PHX
$155
9/18Wed
2 stopsUnited Airlines
11h 18mSTL-PHX
$277

Search by stops

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Last minute flights from St. Louis to Phoenix

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 St. Louis to Phoenix that are departing in the next 10 days.
5/10Fri
nonstopFrontier
3h 27mSTL-PHX
5/13Mon
nonstopFrontier
2h 54mPHX-STL
$138
5/8Wed
nonstopFrontier
3h 28mSTL-PHX
5/11Sat
nonstopFrontier
2h 54mPHX-STL
$198
5/7Tue
multi-stopDelta
8h 16mSTL-PHX
5/11Sat
multi-stopDelta
5h 47mPHX-STL
$270
5/7Tue
nonstopAmerican Airlines
3h 21mSTL-PHX
5/11Sat
nonstopAmerican Airlines
3h 00mPHX-STL
$281
5/10Fri
multi-stopUnited Airlines
8h 03mSTL-PHX
5/13Mon
multi-stopUnited Airlines
7h 46mPHX-STL
$295
5/8Wed
multi-stopSpirit Airlines
24h 44mSTL-PHX
5/12Sun
multi-stopSpirit Airlines
24h 33mPHX-STL
$298
5/7Tue
multi-stopDelta
8h 16mSTL-PHX
5/8Wed
multi-stopDelta
5h 47mPHX-STL
$300
5/8Wed
multi-stopSpirit Airlines
24h 44mSTL-PHX
5/11Sat
multi-stopSpirit Airlines
8h 25mPHX-STL
$301
5/7Tue
nonstopAmerican Airlines
3h 21mSTL-PHX
5/11Sat
multi-stopAmerican Airlines
7h 12mPHX-STL
$319
5/7Tue
multi-stopUnited Airlines
8h 03mSTL-PHX
5/8Wed
multi-stopUnited Airlines
8h 19mPHX-STL
$375

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St. Louis - Phoenix Sky Harbor Airport Flights

Departure:

St. Louis (STL)United States

Destination:

Phoenix Sky Harbor Airport (PHX)United States

Return flight deals:

Phoenix Sky Harbor Airport - St. Louis

Cabin classes:

$1,148
$3,289
$1,272
$88