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Find cheap flights from Phoenix to St. Charles from $59

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. Charles departing on 7/10. 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
Thu 6/27
Thu 7/4

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Good to know

Low season

January

High season

May

Cheapest flight

$59
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly and prices are also 30% lower on average.
Flight from Phoenix to St. Louis

When to book flights from Phoenix to St. Charles

Are your dates flexible? Find out the best times to travel from Phoenix to St. Charles based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

FAQs for booking flights from Phoenix to St. Charles

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

    When flying out of Phoenix Sky Harbor Intl Airport you’ll be using Phoenix Sky Harbor Intl. St. Charles does not have its own airport so you’ll be flying into nearby Lambert-St Louis airport, which is 7.2 mi away.

  • How long does a flight from Phoenix Sky Harbor Intl Airport to St. Charles take?

    Direct flights cover the 1,258 miles separating Phoenix Sky Harbor Intl Airport and St. Charles in about 2h 54m.

  • How many flights are there between Phoenix Sky Harbor Intl Airport and St. Charles?

    13 direct flights run between Phoenix Sky Harbor Intl Airport and St. Charles on a daily basis. On average, there are about 91 departures each week.

  • What’s the cheapest day of the week to fly between Phoenix Sky Harbor Intl Airport and St. Charles?

    Consider leaving on a Saturday and avoid Fridays if you are looking for the best rates. For your return to Phoenix Sky Harbor Intl Airport, you’ll find the best rates on Wednesdays and the most expensive ones on Mondays.

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

    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. Charles.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Charles 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. Charles?

    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. Charles with an airline and back to Phoenix with another airline.

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

    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. Charles from Phoenix up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines provide the cheapest flights from Phoenix Sky Harbor Intl Airport to St. Charles?

    In the last 72 hours, the cheapest one-way ticket between Phoenix Sky Harbor Intl Airport and St. Charles found on KAYAK was with Frontier for $59. Frontier offered a round-trip connection from $118 and American Airlines from $131.

See more FAQs

Top tips for finding cheap flights from Phoenix Sky Harbor Intl Airport to St. Charles

  • There is no airport in St. Charles. Instead, you’ll be flying into St. Louis Lambert Airport when flying between Phoenix Sky Harbor Intl Airport and St. Charles.
  • The cheapest flight from Phoenix to St. Charles was found 73 days before departure, on average.
  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be November, December and January. The cheapest month to fly is May.
See more tips

Top 5 airlines serving Phoenix to St. Charles

 
Need help choosing which airline to fly with from Phoenix to St. Charles? 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 10502 reviews
8.2Boarding
7.4Food
8.0Entertainment
7.9Comfort
8.6Crew
Airline reviews

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

10.0 ExcellentMichael, May 2024SJC - ATL
Read more about Delta reviews

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Awful. Flight was continuously getting delayed and gates kept changing without any reason. Flight was delayed for more then 3 hours

Paid premium for Delta only to be on safe but tired old 767 with ancient cabin in mediocre condition. Poor wifi and horrible inflight entertainment. Hardly a premium experience. Should have flown SW and had fun flight crew and no pretense

Our flight to Zurich was delayed by almost 3 hours, so we missed our next flight. There was no indication it would be delayed this much. We were told the gate had changed and then it apparently took over 2 hours to load the "catering" on the plane. We were not compensated in any way for the trouble.

Rated entertainment as Mediocre as there were major problems with the Infotainment system that took probably a half hour for them to fix.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

Delta crushed it. Flight attendant in first was attentive and just never stopped. Honestly one of the best domestic flights I’ve been on.

They were an hour late and they didn’t have my wheelchair for me

The Flight crew didn’t serve us until about 1.5 hours into the flight because of turbulence but after it ended it was fine to move around. They served us water only and snacks and then NEVER, NOT ONE TIME came through to collect trash until right before landing about 1.5 hours later. There was absolutely no need for that. They crew was just standing around talking and visiting with each other and really never tried to see if we might want something besides water or even try to come pick up trash. This is VERY unusual for a Delta flight but it was not what I would have expected for a 4 hour flight.

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

There was no screens on board AND the WiFi didn’t work. My seat was broken and couldn’t recline so I couldn’t even sleep. The flight attendants didn’t offer anything to make it more comfortable. It was such an old cramped plane, when the person in front of me reclined I couldn’t even open my tray table. All the United ads talk about guaranteeing everyone gets a screen!

The Wi-Fi was unavailable on this flight for some reason.

On time take off…US cabins look tired and need of refresh!

Fantastic. Smooth boarding with an infant. Never experienced it with any other carriers.

This was a Lufthansa flight, not United. The CSA at the counter, Ashley, was not only incompetent, but quite rude. Me and two other PAX waited over 7 minutes standing in front of her and another CSA and they ignored us. We joked that we must have accidently taken invisibility pills. She could have at least said "I'll be with you in a moment, I'm currently....". I could go on about how rude she and the other CSAs were (whispering, not communicating with me, blaming the situation on others, etc.). She would not work for me. Then, she gave me literally the worst seat on the plane. the worst. My seat kept getting bumped (rammed twice by the crew with their carts and about every 5 minutes by someone using the bathroom), listening to the bathroom all night, crowded seat, etc.

My seat was broken. WiFi didn’t work. Gate crew at HOU were rude and condescending. Treated all the passengers badly. Bad experience, United.

First flight of the day… MINIMUM FUEL! 15 minute landing delay at HOU due to fog turned into a 2+ hour delay! Rather than circle, they had to divert to another city to refuel! Sat on tarmac at Austin to refuel. We ALL missed our connections! The crew, including pilots, were clueless. Crew was really a mess. At HOU, Untied employees were exceedingly rude to all. It was pitiful.

An hour and a half late is UNACCEPTABLE. The negative impact to our family is unconscionable. And for the price we were forced to pay...

No lounge access with “United First” ticket. False alarm about late flight, jeopardizing connection. Wrong meal. Loose power socket would not hold plug, could not charge device. In-flight access to text messaging did not work. Toilet seat on plane would not stay up.

Worst situation ever! I booked my tickets for this trip on Alaska Airlines. I guess AA is a partner and we flew nonstop from Eugene to PHX on an AA jet. I had to pay for luggage from PHX to EUG. And this was an Alaska Airlines reservation paid for with Alaska airlines credit card! Got to the PHX airport and was not able to check bags because of some weird issue with the AA software. My reservation had to be the-entered by the agent. I will never pick another American Airlines flight on the Alaska Airlines website. While on vacation, I tried to upgrade our seats for the trip home. The request just buffered and never went through. I tried four times and was charged four times on my credit card. The card was charged but the seats were never changed. What a wreck!

I like the boarding process, it was fast. The seat doesn’t have a TV for a long flight and food wasn’t served, just snacks.

Use planes with TVs on flights over 4 hours. The free entertainment was a cheap in between solution for a very long flight that you don't even bother providing meals or decent snacks.

American cancelled our flight home. Zero option for hotel, alternative transportation and took 3 hours to find our bags so we could take a 3 hour UBER ride home on our dime. Never flying AA again.

Re-checking our bags, the workers were not able to help us with boarding passes for the flight, told us to wait, then ignored us while they helped many other passengers. Until I got rude, they would have left us standing there, and even then they were very curt and dismissive in telling us where to get boarding passes printed. We made it to the gate just as they were starting to board passengers. It was just rude customer service.

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.

Because our flight from marsh Harbor to Fort Lauderdale was over three hours delayed it caused us to miss our flight in Fort Lauderdale. Because we missed that flight, it cost us nearly $100 apiece for four different travelers which totaled nearly $400. We are seeking a reimbursement for the flight that we missed in Fort Lauderdale Florida.

Flight expected to leave at 6:40 pm ended leaving at 8:00 am the following day. I slept in a cold airport. Never again Spirit for me…

The flight was on time and nice as always for me with spirit but the cabin crew were not good. They left the lights on on a red eye for the entire flight.

This was the return leg of my journey with Spirit Airlines. Despite its reputation, I found no issues as it got me from point A to B safely and without delay, especially with no mechanical delays, which is fantastic in my book! The staff, from ground crew to cabin crew, were all pleasant and hassle-free. The flight was smooth from takeoff to landing. I have absolutely no complaints about this no-frills airline!

I got a one-way, last-minute nonstop flight from PDX to BWI for only $125. Yes, I got nicked $79 more for a checked suitcase and $89 more for the BIG SEAT option, but it was worth it, even with $4.50 for coffee and $10 for a snack (the latter no different than any other airline). The grand total was still less flying on any other airline.

It was the worst ever, i will be filing a lawsuit to get a refund. Our flight was delayed 4 hours so we would miss our connecting flight, we were not rebooked to our destination the same day, we were not offered any options to get home on the same day despite being clear that we absolutely cannot get stranded at night due to family, we were forced to book our own flights on a different airline to get home, and spririt is refusing a refund because our flight wasn't cancelled, only delayed. oh yeah, and they lost our luggage on the first part of the trip and you cannot get a hold of customer service when anything goes wrong, on hold for 30+ minutes. and their app breaks so you can't use that either.

This recognisable no-frills airline gets me from point-A to point-B. I was able to get to Chicago without stress. The checked baggage collection and reclaim could be improved.

The crew was the best and very accommodating I know you don't offer any complimentary items but water and coffee will not break the bank !!

My flight was cancelled!!! I had to spend 200.00 on another flight!!

The whole day was a nightmare. Flight extremely late. Boarding was a mess of a nightmare.

It was ridiculously hard to check in for the flight, and Frontier charged us a LOT of money to have a carry on suitcase, and then told everyone we could not carry on bags and had to check them through at the gate, and didn't refund the extra money we paid to have the suitcase as carry on.

I had a terrible experience with Frontier. I arrived before the 60 minute cut off and was told that Frontier has a two hour window for bags. I was then told the next available flight wasn’t until the end of the day (I had booked a 6am flight). I took a look around and saw other people being told that they could not board their flights or that they had to pay additional fees. I opted to rebook on American Airlines. There’s absolutely no straightforward way to contact Frontier, so this ticket was a complete waste of money. Oh - and the kicker is that the lady lied about the two hour cut off.

Frontier won’t help you at the airport without paying $25. Carry on was $75. Then you get on the plain and every beverage or snack is also a charge. Seats are hard and real packed in. I would never fly them again.

Worst experience I have seen. The flight was cancelled without any reason.

My experience with frontier staff at the Denver airport was absolutely horrible. The manager on duty was even worst if was the worst experience I have ever had, I have never been treated so poorly as a customer in my life! The staff was extremely rude, eye rolls and attitude and then refusal to help me at all. I wish I could never fly frontier again that’s how horrible it was!

The Frontier app wasn’t working. So I could not pay for a carry on the week prior to flying. They charged me 99$ at the gate to carry on a duffle bag.

Good for the price. My only complaint is that the pilot should keep the air flowing while passengers are waiting to getting out of airplane.

Plane could have been more on time. More leg room .

I arrived 1 hour prior to boarding, and they said I was too late for a domestic flight. First time I heard that :-(

Check in online was easy. Seats aren’t very comfortable

Book cheap flights from Phoenix to St. Charles

Recent round-trip flight deals

6/15Sat
nonstopFrontier
2h 54mPHX-STL
6/22Sat
nonstopFrontier
3h 17mSTL-PHX
$118
6/26Wed
nonstopFrontier
2h 59mPHX-STL
6/29Sat
nonstopFrontier
3h 17mSTL-PHX
$119
6/13Thu
nonstopAmerican Airlines
2h 54mPHX-STL
6/18Tue
nonstopAmerican Airlines
3h 20mSTL-PHX
$131
6/4Tue
nonstopAmerican Airlines
3h 00mPHX-STL
6/18Tue
nonstopAmerican Airlines
3h 20mSTL-PHX
$132
6/4Tue
1 stopSpirit Airlines
23h 40mPHX-STL
6/7Fri
1 stopSpirit Airlines
21h 42mSTL-PHX
$154
6/25Tue
1 stopSpirit Airlines
24h 49mPHX-STL
7/2Tue
1 stopSpirit Airlines
10h 18mSTL-PHX
$159
6/7Fri
1 stopUnited Airlines
8h 48mPHX-STL
6/8Sat
1 stopUnited Airlines
7h 05mSTL-PHX
$179
6/14Fri
1 stopDelta
5h 21mPHX-STL
6/16Sun
1 stopDelta
6h 18mSTL-PHX
$216
6/6Thu
1 stopDelta
5h 28mPHX-STL
6/18Tue
1 stopDelta
7h 27mSTL-PHX
$253
6/4Tue
1 stopUnited Airlines
5h 10mPHX-STL
6/18Tue
2 stopsUnited Airlines
19h 04mSTL-PHX
$390

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Recent one-way flight deals

7/10Wed
nonstopFrontier
3h 01mPHX-STL
$59
6/11Tue
nonstopAmerican Airlines
2h 54mPHX-STL
$66
7/4Thu
1 stopSpirit Airlines
24h 26mPHX-STL
$77
7/19Fri
nonstopFrontier
3h 01mPHX-STL
$79
6/7Fri
1 stopDelta
5h 21mPHX-STL
$108
6/2Sun
1 stopSpirit Airlines
24h 33mPHX-STL
$147
6/2Sun
nonstopAmerican Airlines
3h 00mPHX-STL
$161
7/4Thu
1 stopDelta
6h 11mPHX-STL
$288
7/10Wed
2 stopsUnited Airlines
18h 08mPHX-STL
$323
5/31Fri
2 stopsUnited Airlines
15h 21mPHX-STL
$390

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Last minute flights from Phoenix to St. Charles

Last minute flight, train and bus deals

6/1Sat
nonstopAmerican Airlines
3h 00mPHX-STL
6/5Wed
nonstopAmerican Airlines
3h 17mSTL-PHX
$201
6/1Sat
multi-stopFrontier
12h 01mPHX-STL
6/5Wed
nonstopFrontier
3h 18mSTL-PHX
$221
6/1Sat
multi-stop
12h 01mPHX-STL
6/5Wed
multi-stop
23h 05mSTL-PHX
$268
5/31Fri
nonstopFrontier
2h 59mPHX-STL
6/2Sun
multi-stopFrontier
17h 23mSTL-PHX
$316
5/31Fri
nonstopAmerican Airlines
3h 00mPHX-STL
6/2Sun
nonstopAmerican Airlines
3h 24mSTL-PHX
$321
5/31Fri
multi-stopDelta
5h 47mPHX-STL
6/2Sun
multi-stopDelta
6h 23mSTL-PHX
$340
5/30Thu
multi-stopAmerican Airlines
6h 54mPHX-STL
6/2Sun
nonstopAmerican Airlines
3h 24mSTL-PHX
$482
6/1Sat
multi-stopUnited Airlines
8h 43mPHX-STL
6/5Wed
multi-stopUnited Airlines
13h 13mSTL-PHX
$528
5/31Fri
multi-stopUnited Airlines
7h 41mPHX-STL
6/2Sun
multi-stopUnited Airlines
6h 25mSTL-PHX
$865
6/1Sat
multi-stopAlaska Airlines
14h 59mPHX-STL
6/5Wed
multi-stopAlaska Airlines
15h 40mSTL-PHX
$1,035

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Flights to St. Charles