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

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Flight deals we found

These prices are lower than our typical predictions for similar flights.
65% less than typical
$176
Roundtrip per traveler
Tue, Jul 23 - Sun, Jul 28
American AirlinesAmerican Airlines
3h 11m
6:09pm
7:20pm
STL
Nonstop
PHX
Found 12 hours ago
65% less than typical
$216
Roundtrip per traveler
Thu, May 23 - Sun, May 26
DeltaDelta
6h 56m
6:50pm
11:46pm
STL
1 stop • 1h 55m in SLC
PHX
Found 16 hours ago
55% less than typical
$223
Roundtrip per traveler
Sun, Jul 21 - Tue, Jul 30
UnitedUnited
6h 30m
6:20am
10:50am
STL
1 stop • 1h 38m in IAH
PHX
Found 11 hours ago
50% less than typical
$273
Roundtrip per traveler
Thu, Jul 4 - Sun, Jul 7
DeltaDelta
8h 50m
6:06am
12:56pm
STL
1 stop • 3h 48m in MSP
PHX
Found 9 hours ago

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

Prices were available within the past 7 days and start at $44 for one-way flights and $88 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Spirit Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Spirit Airlines
Flights from St. Louis (STL) to Phoenix (PHX)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Sky Harbor Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Spirit Airlines, Sun Country Airlines, United
Roundtrip price
$88
Distance
1259 mi
Average flight time
1 hour 19 mins

St. Louis to Phoenix Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from St. Louis to Phoenix offer the perfect respite. Not only does exploring Phoenix 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 St. Louis to Phoenix 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 STL to PHX 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 Phoenix are only a plane trip away. Book your travel arrangements with us today!

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

Frequently asked questions

How much is a flight from STL to Phoenix Sky Harbor Airport?
The lowest price advertised for a round-trip flight between St. Louis Lambert International Airport and Sky Harbor Intl. Airport (PHX) is $88. But you better get a move on. This price is based on fares quoted within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Lambert-St. Louis Intl. Airport (STL) to Phoenix Sky Harbor Intl. Airport?
This differs from airline to airline, as each has its own terms and conditions. Head to the Customer Service Portal, where there are easy-to-follow instructions on how to cancel online.
How do I find cheap flights from Lambert-St. Louis Intl. Airport (STL) to Sky Harbor Intl. Airport (PHX) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for Lambert-St. Louis Intl. Airport (STL) to Phoenix Sky Harbor Airport flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from Lambert Field to PHX?
The flying distance between St. Louis Lambert International Airport (STL) and Phoenix Sky Harbor Intl. Airport (PHX) is 1243 mi. Work your way through your travel song playlist or get stuck into a book and the trip will zip on by.
Which airlines fly direct from Lambert-St. Louis Intl. Airport (STL) to Sky Harbor Intl. Airport (PHX)?
Southwest Airlines (WN) is a top option. It offers 95 flights from Lambert Field to Phoenix Sky Harbor Intl. Airport each month. Like more options? Check out what’s available with American Airlines (AA). This carrier offers 56 flights every month between these airports.
Are Lambert-St. Louis Intl. Airport (STL) to Sky Harbor Intl. Airport (PHX) flight tickets cheaper when they're purchased at the last minute?
Booking last minute from St. Louis Lambert International Airport to Sky Harbor Intl. Airport (PHX) can be hit-or-miss. You may be able to find a bargain, but you could also miss out entirely! If you’d rather play it safe and start planning your trip early on, Expedia compares flight deals up to 12 months in advance. Just keep in mind that not all airlines list their prices that far in advance. Our suggestion? Check back often as prices are updated frequently.
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