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STL - PHX

Find cheap flights from St. Louis to Phoenix Sky Harbor Airport from $39

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 5/11. 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
Sun 5/26
Sun 6/2

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 44,738,066 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
9:39 pm - 11:07 pmSTL-PHX
3h 28mnonstop
6:45 am - 11:39 amPHX-STL
2h 54mnonstop
$78Frontier
Find Deal
Wed, May 8 - Sat, May 11
9:53 pm - 11:21 pmSTL-PHX
3h 28mnonstop
3:45 pm - 8:39 pmPHX-STL
2h 54mnonstop
$88Frontier
Find Deal
Mon, May 6 - Wed, May 8
11:36 am - 10:20 amSTL-PHX
24h 44m1 stop
6:45 am - 11:39 amPHX-STL
2h 54mnonstop
Wed, May 8 - Sat, May 11
5:02 pm - 10:35 amSTL-PHX
19h 33m1 stop
3:45 pm - 8:39 pmPHX-STL
2h 54mnonstop
Mon, May 6 - Wed, May 8
8:00 am - 9:24 amSTL-PHX
3h 24mnonstop
6:56 pm - 11:56 pmPHX-STL
3h 00mnonstop
$131American Airlines
Find Deal
Sat, May 25 - Thu, May 30
2:00 pm - 7:32 pmSTL-PHX
7h 32m1 stop
6:56 pm - 11:50 pmPHX-STL
2h 54mnonstop
$139American Airlines
Find Deal
Tue, Jun 4 - Tue, Jun 11
11:36 am - 10:46 amSTL-PHX
25h 10m1 stop
11:39 am - 10:45 amPHX-STL
21h 06m1 stop
$160Spirit Airlines
Find Deal
Wed, Jun 12 - Tue, Jun 18
10:34 am - 7:39 pmSTL-PHX
11h 05m1 stop
8:59 am - 10:46 amPHX-STL
23h 47m2 stops
$206Spirit Airlines
Find Deal
Tue, May 7 - Tue, May 28
5:30 pm - 11:46 pmSTL-PHX
8h 16m1 stop
6:00 am - 2:33 pmPHX-STL
6h 33m1 stop
$216Delta
Find Deal
Tue, Jun 4 - Tue, Jun 18
6:30 pm - 11:34 pmSTL-PHX
7h 04m1 stop
5:20 pm - 12:36 amPHX-STL
5h 16m1 stop
$233Delta
Find Deal
Fri, Aug 2 - Mon, Aug 5

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 Thursday is the most expensive. Flying from Phoenix Sky Harbor Airport back to St. Louis, the best deals are generally found on Tuesday, 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 August, where tickets cost $340 on average. On the other hand, the most expensive months are March and February, where the average cost of tickets is $484 and $436 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 4 days before departure. For the absolute cheapest price, our data suggests you should book 4 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 ($39) and American Airlines ($66). The cheapest round-trip tickets were found on Frontier ($78) and American Airlines ($131).

Which airlines fly most frequently between St. Louis and Phoenix Sky Harbor Airport?

American Airlines connects St. Louis to Phoenix Sky Harbor Airport up to 4 flights per day, followed by Southwest (3 flights per day), and Frontier (one flight per day).

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 10 nonstop flights that take off from St. Louis and land in Phoenix Sky Harbor Intl Airport, with an average flight time of 3h 21m. The most common departure time is 5:00 am and most flights take off at night. Each week, there are 62 flights. The most frequent day of departure is Sunday, when 16% of all weekly flights depart. The fewest flights depart on a Tuesday.

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 5:20 am and will be landing in Phoenix Sky Harbor Intl Airport at 6:46 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

$39
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 21% 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 $39 for a one-way ticket and $78 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 $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 $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 $136 or less one-way and $235 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 10966 reviews
7.4food
8.2boarding
7.9comfort
8.0entertainment
8.6crew
Airline reviews

Delta is one of the best airlines I have flown

10.0 ExcellentKellie, Apr 2024ANC - SEA
Read more about Delta reviews

Delta is one of the best airlines I have flown

Made the Atlanta to Pittsburgh trip many times, with Delta no issues

I always fly with Delta. My friends tell me their horror stories of flying with other airlines. I just smile and say, “You should fly Delta”

I'm a larger, athletic guy (6'2", 260lbs powerlifter) and I found the seats incredibly uncomfortable with minimal leg room, especially in a window seat. Now, I full understand that being smaller may change my view but even if I was 80lbs less, my legs would be the same size and I was sandwiched between my seat and the seat in front of me.

Horrible. This was not first class. This was a connecting flight whi h was late. My original flight never came. I hated the fact that delta gave me a connecting flight from New York to Orlando Florida. No meals and the television screens were not working. There wasn't even any power to charge your phones. This is NOT FIRST CLASS DELTA!!! Do better next time!

This flight was ridiculous. I had to have a connecting flight from New York to orlando Florida??? The flight left late and because it was a short flight there was no first class amenities. I had one alcohol drink. The flight crew was fine, but it sure did not feel like first class. Delta to me dropped the ball by giving me a connecting flight. By the time we got to Raleigh we would have missed the next flight. Lucky for me the flight never came so now I was stuck waiting for a later flight that came in late also.

Our flight was delayed in Atlanta. The staff could have gave us an explanation for the delay and how long it would be.

I liked the ease of checking in, luggage check in, wheel chair assistance, boarding and flight.

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive. I also upgraded to comfort + , I didn’t feel it was worth it. There was no benefit

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive.

So so. Terrible aircraft choice for that leg of the flight.

Due to one crew member not showing up to work, our flight was significantly delayed causing us to miss our connecting flight in Houston to Mississippi causing us to be delayed by more than 6 hours and missing our event all together. Very disappointing. All because ONE crew member called in sick. United did grant us a $15 meal voucher, which was a small but appreciated concession that I wasn’t able to use because I ordered my lunch and paid for it before applying the concession, and the staff said it was too late to use it. Ugh! We also had a TWO delay coming back from Mississippi, but that was on American Airlines and it was due to weather, so not their fault. Anyway, not at all impressed with United’s handling of our flight and the HUGE disappointment of missing our important family event for our 90 year old mother. All that money and all that stress and emotions for nothing. Having to wait the hour to bring an employee from LAX seemed like something that should not have happened. Why don’t you have a local back-up? Santa Ana is not a little airport in a rural area.

Flight delayed from Cape Town to Washington then got diverted to miami and in miami we had to fend for ourselves , im still trying to get to Shreveport now

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

I just wrote a text which was supposed to be for the flight from Denver to spokane not Frankfurt to Denver.

On time every leg of the journey and exceptional staff at counter, gate, and on board. I haven’t travelled in US for a long time and was genuinely surprised how pleasant this was.

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

flight delays, staff only communicating when pushed, food service lasting a grand total of 7 minutes, stuck in seat from 45mins into flight until landing

Crew was great and did their best to make us comfortable and captain came out at the beginning to announce why the flight was delayed, weather situation up ahead, and kept us updated throughout the flight.

they made me check my carryon. There was space in the overhead bins.

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.

American airlines put us on a connecting flight that only had 20 min layover. I made it by running down the concorce in Phoenix and was last one on the flight. Not acceptable!!!!!!!!!!!!!!!!!!!!!!!!!!!

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

First the good, everyone was friendly and efficient. Flight was smooth and plane was very clean and new. Now the bad, seats have almost no padding on your behind. I was in exit row so I had tons of leg room for a 6' 2" bean pole with long legs. Everything was extra - water, soda, snacks everything besides oxygen. Ya get what you pay for, and my flight was cheap as you could ever want it, so no worries.

First the good, everyone was friendly and efficient. Flight was smooth and plane was very clean and new. Now the bad, seats have almost no padding on your behind. I was in exit row so I had tons of leg room for a 6' 2" bean pole with long legs. Everything was extra - water, soda, snacks everything besides oxygen. Ya get what you pay for, and my flight was cheap as you could ever want it, so no worries. They dont really bother you about carry-on size, I brought a descent sized backpack and they didnt even check.

Spirit canceled the flight in March and never notified me!

Seats suck, not enough room, overcrowded planes, hectic situation all together.

Pretty good. Would’ve been excellent if we would have left on time and the crew wasn’t late.

I do not like the customer service, I had an emergency and needed to cancel a pet reservation right after I had booked it and they would not do anything but issue a credit. I haven't flown in years as I have 7 kids and don't have spare time. I want my $125 back on my card please

Spirit airline tries to screw you at every opportunity. Spirit wanted 65$ for an extra pound in the suitcase Made me open the suitcase at the counter to remove 1 pound. Staff very cold and rude Will never fly spirit again and will recommend same to family and friends

Delayed..4 times...completely disorganized boarding. After 5 hours they scrambled to move ppl off plane bc they overbooked. Then they didn't have a cabin crew. WiFi on plane didn't work. Zero amenities. Once we boarded we sat on tarmac for an hour. Explore all alternate options including purchasing a pair of hiking boots and walking to your destination instead of flying spirit.

what I like about Spirit is that the pilot and crew are good communicators. The plane itself - well, its a budget airline and you get what is expected, But I generally just feel safer, somehow, when I know more about what is going on - and Spirit has always done a good job of telling me what is going on: why the delay, why the turbulence, why this and that... and that means a lot to me.

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.

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

The process of buying the ticket and navigating all the hidden charges that Frontier throws at you was a terrible experience. The actual airport experience and flying was fine.

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

Not have to pay for every single item to take a flight. Seating and delays sucked.

Flight was cancelled and I had to spend the night in the airport lugging my suitcase around

If you don’t check in 24 hours in advance, they will charge you $110 to check your bag instead of the $30. I did not get an email with this information and did not check in. In addition, my flight home was cancelled at layover and I had to spend the night in the airport, and then have another layover at another airport before making it home. Will not fly frontier again.

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.
5/11Sat
nonstopFrontier
3h 28mSTL-PHX
$39
5/6Mon
nonstopFrontier
3h 28mSTL-PHX
$49
5/31Fri
nonstopFrontier
3h 17mSTL-PHX
$59
6/11Tue
nonstopAmerican Airlines
3h 20mSTL-PHX
$66
5/6Mon
1 stopSpirit Airlines
19h 33mSTL-PHX
$73
8/6Tue
1 stopAmerican Airlines
7h 35mSTL-PHX
$75
5/1Wed
1 stopSpirit Airlines
24h 52mSTL-PHX
$80
5/11Sat
2 stopsUnited Airlines
14h 38mSTL-PHX
$269
10/3Thu
2 stopsUnited Airlines
11h 18mSTL-PHX
$308
5/17Fri
1 stopDelta
6h 56mSTL-PHX
$505

Search by stops

Search by airline

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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.
5/1Wed
multi-stopFrontier
30h 21mSTL-PHX
5/4Sat
nonstopFrontier
2h 54mPHX-STL
$120
5/1Wed
multi-stopFrontier
6h 01mSTL-PHX
5/4Sat
nonstopFrontier
2h 54mPHX-STL
$138
4/30Tue
nonstopAmerican Airlines
3h 26mSTL-PHX
5/7Tue
nonstopAmerican Airlines
3h 00mPHX-STL
$241
4/30Tue
multi-stopAmerican Airlines
7h 29mSTL-PHX
5/7Tue
nonstopAmerican Airlines
3h 03mPHX-STL
$249
5/1Wed
multi-stopDelta
8h 29mSTL-PHX
5/4Sat
multi-stopDelta
5h 46mPHX-STL
$250
5/1Wed
multi-stopDelta
6h 07mSTL-PHX
5/4Sat
multi-stopDelta
5h 50mPHX-STL
$260
4/29Mon
multi-stopUnited Airlines
5h 35mSTL-PHX
4/30Tue
multi-stopUnited Airlines
7h 39mPHX-STL
$290
4/29Mon
multi-stopUnited Airlines
6h 36mSTL-PHX
4/29Mon
multi-stopUnited Airlines
7h 39mPHX-STL
$370
4/30Tue
multi-stopSpirit Airlines
22h 43mSTL-PHX
5/7Tue
multi-stopSpirit Airlines
20h 11mPHX-STL
$489
4/29Mon
multi-stopSpirit Airlines
27h 15mSTL-PHX
5/1Wed
multi-stopSpirit Airlines
17h 50mPHX-STL
$513

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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:

$1,136
$1,588
$1,283
$89