$125 Cheap flight deals from Collinsville (STL) to Phoenix (PHX)

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This Weekend's Flight Deals from Collinsville to Phoenix

This weekend's flight prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Jul 3 - Tue, Jul 7
STL
Lambert-St. Louis Intl.
PHX
Sky Harbor Intl.
$362 Roundtrip, found 1 day ago
$362
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Fri, Jul 3 from Lambert-St. Louis Intl. to Sky Harbor Intl., returning Tue, Jul 7, priced at $362 found 1 day ago

Airfares from $125 One Way, $245 Round Trip from Collinsville to Phoenix

Prices starting at $245 for return flights and $125 for one-way flights to Phoenix were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Oct 14 - Sat, Oct 17
STL
St. Louis
PHX
Phoenix
$245 Roundtrip, found 6 days ago
$245
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Wed, Oct 14 from St. Louis to Phoenix, returning Sat, Oct 17, priced at $245 found 6 days ago
Wed, Oct 21 - Mon, Oct 26
STL
St. Louis
PHX
Phoenix
$250 Roundtrip, found 5 days ago
$250
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Wed, Oct 21 from St. Louis to Phoenix, returning Mon, Oct 26, priced at $250 found 5 days ago
Wed, Oct 21 - Mon, Oct 26
STL
St. Louis
PHX
Phoenix
$253 Roundtrip, found 5 days ago
$253
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Wed, Oct 21 from St. Louis to Phoenix, returning Mon, Oct 26, priced at $253 found 5 days ago
Wed, Oct 21 - Mon, Oct 26
STL
St. Louis
PHX
Phoenix
$255 Roundtrip, found 5 days ago
$255
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Wed, Oct 21 from St. Louis to Phoenix, returning Mon, Oct 26, priced at $255 found 5 days ago
Mon, Aug 10 - Tue, Aug 11
STL
St. Louis
PHX
Phoenix
$256 Roundtrip, found 3 days ago
$256
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Mon, Aug 10 from St. Louis to Phoenix, returning Tue, Aug 11, priced at $256 found 3 days ago

Phoenix economy flight packages

Price found within the past 48 hours. Click for updated prices.
Marriott Phoenix Chandler
4.0-star property

Marriott Phoenix Chandler

9.2/10 Wonderful! (1,005 reviews)

Aug 19 - Aug 22

3 night stay

St. Louis (STL) to Phoenix (PHX)

Southwest Airlines • Coach

Phoenix (PHX) to St. Louis (STL)

Frontier Airlines • Coach
Price was $564, price is now $448 per person
$448
per person
found 1 day ago
we had requested a high-floor room if available, but we were assigned a room on the lowest floor with a very poor view. We’re a bit disappointed.

Reviewed on Apr 6, 2026

Fairmont Scottsdale Princess
5.0-star property

Fairmont Scottsdale Princess

9.2/10 Wonderful! (1,007 reviews)

Aug 19 - Aug 22

3 night stay

St. Louis (STL) to Phoenix (PHX)

Southwest Airlines • Coach

Phoenix (PHX) to St. Louis (STL)

Frontier Airlines • Coach
Price was $806, price is now $627 per person
$627
per person
found 1 day ago
Excellent property, loved our stay!

Reviewed on Feb 24, 2026

Hotel Valley Ho
4.5-star property

Hotel Valley Ho

9.6/10 Exceptional! (2,565 reviews)

Aug 19 - Aug 22

3 night stay

St. Louis (STL) to Phoenix (PHX)

Southwest Airlines • Coach

Phoenix (PHX) to St. Louis (STL)

Frontier Airlines • Coach
Price was $611, price is now $488 per person
$488
per person
found 1 day ago
We recently spent a week at Hotel Valley Ho, using it as a homebase as we visited colleges in the area. It was an absolute pleasure to come back every day, having experienced the June August heat in AZ, and be welcomed by the valet staff. They were professional, friendly and always engaged us warmly. The pools were immaculate and the staff kept everything clean with towels, water and refreshments available. The room was perfect. It had everything we needed and the beds were very comfy. Old Town Scottsdale was literally steps away with some amazing restaurants within a 5 minute walk. All in all a 10/10 experience and we would recommend it to anyone traveling through the area.

Reviewed on Jun 28, 2026

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More About Flying To Phoenix from Collinsville

Route Information for Flights from Collinsville to Phoenix

Origin Airport IATA Code
STL
Destination Airport IATA Code
PHX
Distance
Direct Flight Airlines
Earliest Flight Arrival
Latest Flight Arrival

Collinsville to Phoenix

Looking for cheap Collinsville to Phoenix flights? Orbitz has the cheapest air fares for flights from Collinsville to Phoenix. Plus, with our cutting-edge mobile tools, travel planning has never been easier or more wallet-friendly.

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Access Your Flight Information Anytime

Use the Orbitz app or the mobile Orbitz site, m.orbtiz.com, to see information about your Collinsville to Phoenix flights anytime you need it. Your itinerary is also sent to your email address for reference. Access updates on your flights from Collinsville to Phoenix on your mobile device too, including delays and baggage claim details.

Cheap Air Ticket Prices Guaranteed

Orbitz is your number one source for low fares for Collinsville to Phoenix flights. Our low price guarantee on domestic and international air tickets give you great savings for a perfect trip to Phoenix. Need hotels too? You can book them last minute on your mobile phone.

Frequently asked questions

Are there non-stop flights from Collinsville to Phoenix?
Two airlines offer nonstop flights from Lambert-St. Louis Intl. Airport (STL) to Phoenix, AZ (PHX-Sky Harbor Intl.) — Southwest Airlines and American Airlines. They'll take you where you need to go in style and comfort.
What is the shortest flight from Collinsville to Phoenix?
With the flight from STL to Phoenix Sky Harbor Intl. Airport taking a minimum of 3 hours and 20 minutes, you'll have plenty of time to sit back and enjoy the ride. Order an in-flight vino and get comfortable in your seat with a riveting movie or novel.
What airlines fly from Collinsville to Phoenix most frequently?
Southwest Airlines (WN) is one of the carriers with the most flights from Lambert Field to PHX. It offers 95 services each month on this route. Going on vacation is one of life's biggest pleasures, and this airline will get you where you need to go. American Airlines (AA) also services the route from Collinsville to Phoenix. It's another great option and has 56 flights every month.
What is the cheapest day of the week to fly?
Consider flying out early in the week to save on your airfare. Orbitz data from 2021 shows that Monday is the cheapest day to depart, followed by Tuesday. Saturday showed the highest average ticket prices likely because many travelers prefer to start their vacation on a weekend.
What is the cheapest month to fly?
We won't keep you guessing, according to Orbitz data from 2021, the cheapest month to fly is February. Perfect for those who need a weekend getaway, or just a break from it all in the shortest month of the year. Be aware that the most expensive time to fly is during the height of summer in July, and in the holiday month of December.*According to flight demand on Orbitz.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

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Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.