Home >> Fares From A City >> St. Louis, MO >> St. Louis, MO (STL) To Phoenix, AZ (PHX)
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    Thu, November 26, 2015
    Wed, December 02, 2015
    Thu, December 17, 2015
Peter T.
Staff Airfare Analyst
Peter's Notes:
No min. stay. 50% Off Promo Code Fare; Travel through mid-December. Fare can be bought one-way for half the lowest roundtrip price.

Book this fare on FlyFrontier.com using promo code THANKYOU for travel between Dec. 2 - 17, 2015. This fare requires an overnight layover in Denver.

This is the lowest fare found within the promo code travel period and may not be available throughout the entire travel period or on a daily basis.

Promo code takes 50% off the base fare and expires at 11:59 pm ET on Nov. 26, 2015. However, the lowest available fare can change at any time.

Frontier charges a $30-$35 fee each way for carry-on bags larger than 18x14x8 inches and a $25-$30 fee each way for 1st checked bag no larger than 62 linear inches (length + width + depth) and no heavier than 50 pounds. These bag fees apply to online purchases before check-in. Higher fees apply at the airport.

During booking on FlyFrontier.com, you can purchase "The Works", which includes one checked bag, one carry-on bag, stretch seating, no change fees, and refundability, for much less than purchasing these items separately.

Seats are not available on all flights or all dates of travel. You may need to have flexible travel dates to find this fare. Fares for travel on holidays may be higher.

All mandatory taxes/fees are included in the price. Tax-inclusive fare may be a few dollars higher or lower depending on the airport you connect through, if any. Baggage fees, if applicable, and other optional fees are not included. Our Dealhounds found this airfare using flexible date search. This means we searched a range of dates to find you the best price.

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Reviews for St. Louis to Phoenix
6 Traveler Reviews
"Great flight for the money"
Flight from St. Louis to Phoenix
Airline: American
RT/OW: roundtrip
Number of Stops: 1 stop in DFW
Date of Flight: February 2011
Seat Class: economy
Check-in Experience
In-flight Service
Seat Comfort
Everything went smoothly. They were getting a little strict about carry-on size, but I don't blame them; so many people are exceeding the limit. The middle seat is tight, but that's my fault, not the airline's...
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There are approximately 333 flights covering the route from Lambert-St. Louis International Airport in to Sky Harbor International Airport in Phoenix, provided by as many as 9 airlines.
The following airlines often offer cheap flights from to Phoenix
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