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Cheap flights from Phoenix to St. Louis
Round-trip
Economy
Flight information for Phoenix to St. Louis
(PHX to STL)
Find info about flight duration, direct flights, and airports for your flight from Phoenix to St. Louis
| Best Price Found | $159 | The best flight deal from Phoenix to St. Louis found on momondo in the last 72 hours is $159 |
| Fastest flight time | 2h 50m | The fastest flight from Phoenix to St. Louis takes 2h 50m. |
| Direct flights | Mo, Tu, We and Su | Direct flights go from Phoenix to St. Louis on Monday, Tuesday, Wednesday and Sunday. Airline offering direct flights is Southwest.. |
| Airports in St. Louis | 1 airport | There is 1 airport near St. Louis: Lambert-St Louis (STL) |
How to get the cheapest flight ticket from Phoenix to St. Louis
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly from Phoenix to St. Louis?
August
The cheapest time of year to fly to St. Louis from Phoenix is August. Most expensive is December
What is the cheapest day to depart Phoenix for St. Louis?
Wednesday
The cheapest day of the week is typically Wednesday. The most expensive is typically Sunday
When is the cheapest time to fly from Phoenix to St. Louis?
in the evening
Phoenix to St. Louis flights are approximately 28% more expensive in the afternoon than in the evening
What is the cheapest airline that flies to St. Louis from Phoenix?
Sun Country Air
Sun Country Air, Frontier, and United Airlines are the most popular carriers operating from Phoenix to St. Louis
What is the cheapest Phoenix to St. Louis flight route?
Phoenix Sky Harbor Intl - Lambert-St Louis
Fly from Phoenix Sky Harbor Intl to Lambert-St Louis for the best Phoenix - St. Louis flight prices
PHX
Phoenix Sky Harbor Intl
STL
Lambert-St Louis
How far in advance should you book Phoenix to St. Louis flights?
53 days before
The cheapest time to buy a flight from Phoenix to St. Louis is approximately 53 days to departure
60
Days before departure
0
Easily compare round-trip flights from Phoenix to St. Louis
Below you can see the best fares for your round-trip flight route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Phoenix to St. Louis by changing tabs
Multiple Airlines![Multiple Airlines]()
Mar 15![Multiple Airlines]()
Apr 15
2:50 pmPhoenix Sky Harbor Intl
3h 09m
5:59 pmLambert-St Louis
6:00 amLambert-St Louis
7h 56m
1 stop
1:56 pmPhoenix Sky Harbor Intl
Frontier![Frontier]()
Apr 15![Frontier]()
Apr 18
7:10 amPhoenix Sky Harbor Intl
7h 23m
1 stop
2:33 pmLambert-St Louis
6:00 amLambert-St Louis
7h 56m
1 stop
1:56 pmPhoenix Sky Harbor Intl
Find the cheapest one-way flights from Phoenix to St. Louis
If you're looking for one-way flights from Phoenix to St. Louis, view some of our deals below provided by American Airlines and Frontier
Best airlines flying from Phoenix to St. Louis
Compare and see reviews for airlines that fly from Phoenix to St. Louis with momondo
AirlineFree CancellationPrice
PriceFrom $61
Free Cancellation
Reviews
Pros: It was meh....
Cons: I got no notification that the flight was going to be 1 hour earlier
1 / 6
PriceFrom $106
Free Cancellation
PriceFrom $145
Free Cancellation
PriceFrom $150
Free Cancellation
Reviews
Pros: I appreciate the choice of snacks.
Cons: The coffee served on the flight was lukewarm.
1 / 9
PriceFrom $173
Free Cancellation
Reviews
Pros: Entertainment
Cons: The seat space/leg room is tiny. I found it impossible to fall asleep, being in the middle of a row of three with two "big" people in either side.
1 / 8
PriceFrom $290
Free Cancellation
Which airlines flying from Phoenix Sky Harbor Intl to Lambert-St Louis have COVID-19 safety policies in place?
Delta has implemented additional safety measures to accommodate travelers. Many airlines flying from Phoenix Sky Harbor Intl to Lambert-St Louis are offering enhanced cleaning of their aircraft. Additional policies include pre-flight testing for COVID-19-related symptoms and antibodies. Masks are also required and are provided to travelers. Some airlines are offering socially-distanced seating for a limited time. Policies will vary by airline so keep this in mind as you search for options.
Are airlines flying from Phoenix Sky Harbor Intl to Lambert-St Louis offering flexible cancellation due to COVID-19?
Due to the global impact of COVID-19, some of our airline partners operating flights from Phoenix Sky Harbor Intl to Lambert-St Louis, such as American Airlines, Frontier, and Sun Country Air may have put in place flexible cancellation policies. Use our site to search for all of the airlines offering this flexibility to you.