$44 Cheap Flights from Phoenix (PHX) to St. Louis (STL)

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

Prices were available within the past 7 days and start at $44 for one-way flights and $83 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Wed, May 22 - Wed, May 22
PHX
Phoenix
STL
St. Louis
$83 Roundtrip, found 12 hours ago
$83
Roundtrip
found 12 hours ago
Select Frontier Airlines flight, departing Wed, May 22 from Phoenix to St. Louis, returning Wed, May 22, priced at $83 found 12 hours ago
Frontier Airlines
Sat, May 4 - Sat, May 11
PHX
Phoenix
STL
St. Louis
$88 Roundtrip, found 4 hours ago
$88
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Sat, May 4 from Phoenix to St. Louis, returning Sat, May 11, priced at $88 found 4 hours ago
Frontier Airlines
Sat, May 18 - Tue, May 21
PHX
Phoenix
STL
St. Louis
$94 Roundtrip, found 6 hours ago
$94
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Sat, May 18 from Phoenix to St. Louis, returning Tue, May 21, priced at $94 found 6 hours ago
Frontier Airlines
Sat, May 18 - Sat, May 25
PHX
Phoenix
STL
St. Louis
$98 Roundtrip, found 4 hours ago
$98
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Sat, May 18 from Phoenix to St. Louis, returning Sat, May 25, priced at $98 found 4 hours ago
Frontier Airlines
Sat, May 18 - Tue, May 21
PHX
Phoenix
STL
St. Louis
$100 Roundtrip, found 6 hours ago
$100
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Sat, May 18 from Phoenix to St. Louis, returning Tue, May 21, priced at $100 found 6 hours ago
Frontier Airlines
Mon, May 6 - Mon, May 6
PHX
Phoenix
STL
St. Louis
$103 Roundtrip, just found
$103
Roundtrip
just found
Select Frontier Airlines flight, departing Mon, May 6 from Phoenix to St. Louis, returning Mon, May 6, priced at $103 just found
Frontier Airlines
Thu, May 16 - Mon, May 20
PHX
Phoenix
STL
St. Louis
$104 Roundtrip, found 1 hour ago
$104
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, May 16 from Phoenix to St. Louis, returning Mon, May 20, priced at $104 found 1 hour ago
Frontier Airlines
Fri, May 10 - Mon, May 13
PHX
Phoenix
STL
St. Louis
$108 Roundtrip, just found
$108
Roundtrip
just found
Select Frontier Airlines flight, departing Fri, May 10 from Phoenix to St. Louis, returning Mon, May 13, priced at $108 just found
Frontier Airlines
Tue, May 7 - Wed, May 15
PHX
Phoenix
STL
St. Louis
$109 Roundtrip, found 20 hours ago
$109
Roundtrip
found 20 hours ago
Select Frontier Airlines flight, departing Tue, May 7 from Phoenix to St. Louis, returning Wed, May 15, priced at $109 found 20 hours ago
Frontier Airlines
Fri, May 3 - Thu, May 23
PHX
Phoenix
STL
St. Louis
$110 Roundtrip, found 1 day ago
$110
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Fri, May 3 from Phoenix to St. Louis, returning Thu, May 23, priced at $110 found 1 day ago
Flights from Phoenix (PHX) to St. Louis (STL)
Origin airport
Sky Harbor Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Spirit Airlines, Sun Country Airlines, United
Roundtrip price
$82
Distance
1259 mi
Average flight time
4 hours 55 mins

Phoenix to St. Louis Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from Phoenix to St. Louis offer the perfect respite. Not only does exploring St. Louis provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap airfare means you won’t bust your budget. So no matter whether your ideal itinerary involves flying one way, non-stop, or round trip, you’re bound to find flights that match your schedule on Expedia, and at prices that won’t shock your wallet.

Bagging a cheap flight from Phoenix to St. Louis may mean more dollars to spend on for one-of-a-kind souvenirs when you arrive, but it doesn’t mean you have to skimp on your travel experience, as Expedia offers a sizzling selection of cheap airlines that’ll put you in your happy place on their planes, whether that’s getting lost in a hair-raising airport thriller, dreaming on the passing landscape over a glass of bubbly, or jotting down your vacation bucket list at 38,000 feet. There’s also bound to be plenty of opportunities to snap a few photos of the high life that will make your friends green with envy. After all, enjoying the journey is part of the fun.

With so many affordable flights and so many wonderful adventures awaiting you, there’s no reason to put off booking a fantastic flight from PHX to STL today. So don’t leave it to the last minute to make your dream trip a reality: pack your bags with your go-to travel accessories, put together your list of must-see attractions and can’t-miss activities, and get ready to broaden your horizons – with Expedia, the wonders of St. Louis are only a plane trip away. Book your travel arrangements with us today!

If you would like to book flights to St. Louis more flexibly many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to St. Louis is $44 now!

Frequently asked questions

How much is a one-way flight from PHX to Lambert Field?
You can pick up one-way Phoenix flights to St. Louis starting from only $44. This data is based on the lowest price found on Expedia for this journey leaving across the next three months and was last updated on April 21 2024 and has not changed since. This specific airfare is for an Frontier Airlines flight, departing PHX on June 29 2024 and landing at Lambert-St. Louis Intl. Airport (STL).
How long does it take to fly from Sky Harbor Intl. Airport (PHX) to Lambert Field?
American Airlines has a direct flight jetting off from Phoenix Sky Harbor Airport at 12:20PM and landing at St. Louis Lambert International Airport at 5:18PM — a flying time of 2 hours and 58 minutes. Pick the best available seat, bring your headphones to keep you entertained and the time will rush by.
Is it cheaper to buy a plane ticket from Phoenix Sky Harbor Airport to Lambert Field last minute?
When it’s time to book your flights, being prepared pays dividends. While you may be able to score a last-minute deal on a Phoenix Sky Harbor Intl. Airport to St. Louis Lambert International Airport flight, fares usually don’t get cheaper as the departure date nears. Based on flight pricing and demand studies in 2022, we have found that the sweet spot to lock in a domestic flight is between 28 – 35 days in advance. For international flights it’s between three and four months.
What is the cheapest airline flying from Phoenix Sky Harbor Intl. Airport to STL in the next 90 days?
The cheapest carrier traveling from Phoenix to St. Louis found on Expedia is Frontier Airlines, with fares starting at $44. This price is based on fares found on Expedia with a departure date within the next 90 days. The flight departs PHX on June 29 2024 and touches down at STL. The pricing information was updated on April 21 2024 and has not changed since.
What's the cheapest price for a flight from Sky Harbor Intl. Airport (PHX) to Lambert-St. Louis Intl. Airport (STL) next month?
With a one-way flight from Phoenix to St. Louis coming in at just $44, you’ll have extra dollars left in your hip pocket for exploring. This fare was found after searching all available flights on Expedia within the next 30 days. This particular journey leaves Phoenix Sky Harbor Intl. Airport on May 18 2024, arrives at Lambert Field and is operated by Frontier Airlines. The price was last updated on April 21 2024 and has not changed since.
What airline has the least delays from Phoenix Sky Harbor Intl. Airport to STL?
Jet off with American Airlines from Sky Harbor Intl. Airport (PHX) to Lambert-St. Louis Intl. Airport (STL) and land at the time that’s on your boarding pass. This airline is the best performer on this route, with 81% of services arriving on time. If your flight happens to get delayed, the Expedia App will keep you up to date. Our popular app provides real-time trip alerts, from flight delays to gate changes and more.
Can I find cheap nonstop flights from PHX to STL in the next three months?
The cheapest price we could find for a roundtrip nonstop flight from Phoenix to St. Louis within the next 90 days is $83. This figure is based on available flights on Expedia with a departure date within the next three months. This fare is for a flight via Frontier Airlines departing from PHX on May 18 2024 and arriving at Lambert Field, with a return flight on May 18 2024. Pricing details were updated on April 21 2024.Take advantage of our handy filters to locate nonstop cheap flights from PHX to Lambert-St. Louis Intl. Airport (STL). Just click “Nonstop” under “Filter by” after your search results pop up. Travel plans not etched in stone? You can also try the “Flexible dates” dropdown menu to compare ticket prices for nearby days. Finding a fare that best suits your budget and agenda couldn’t be easier.
What airports do you fly into for Central United States from Phoenix?
You can jet from Phoenix to Central United States via Lambert-St. Louis Intl. Airport (STL), Spirit of St. Louis Airport (SUS) or St. Louis Downtown Airport (CPS). If you’re unsure about which hub to go for, take into account factors such as ticket prices and the expense and ease of getting from the airport. Arrive at Lambert-St. Louis Intl. Airport (STL) and you’ll be approximately 180 mi east of the middle of the city.
What are the most popular departure times for flights from Sky Harbor Intl. Airport (PHX) to Lambert-St. Louis Intl. Airport (STL)?
For American Airlines flights making their way from Sky Harbor Intl. Airport (PHX) to STL, the most popular departure times are between 12:00 PM - 1:00 PM. If you want to avoid those frustrating delays, head off in the morning. This gives you a better chance to miss the air traffic that builds up in the skyways in the afternoon and evening.
Can I change the date of my flight from Phoenix Sky Harbor Airport to STL?
You can easily make changes to your PHX to STL journey by logging in to the Expedia Trips portal. But before you begin, read over the conditions and rules in your itinerary to learn what you can do and what fees apply for changes. Some airlines have a change fee per person, in addition to any difference in fares. However, if you booked in the last 24 hours, you may be able to cancel for free and book new flights. You can also stop by our Customer Service portal for more advice and to chat with our Virtual Agent.
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