Cheap flights from Phoenix to St. Louis

Round-trip
Economy
Phoenix (PHX)
St. Louis (STL)
Fri 1/1
Fri 1/8
Any month
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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 $192 The best flight deal from Phoenix to St. Louis found on momondo in the last 72 hours is $192
Fastest flight time 2h 58m The fastest flight from Phoenix to St. Louis takes 2h 58m.
Direct flights None There are no direct flights from Phoenix to St. Louis. Popular non-direct route for this connection is Phoenix Sky Harbor Intl - Lambert-St Louis.
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
Cheapest
Best
Quickest
Frontier
Feb 12
PHX
Phoenix Sky Harbor Intl
12h 44m
1 stop
STL
Lambert-St Louis
Feb 20
STL
Lambert-St Louis
15h 35m
1 stop
PHX
Phoenix Sky Harbor Intl
Multiple Airlines
Feb 12
PHX
Phoenix Sky Harbor Intl
21h 19m
2 stops
STL
Lambert-St Louis
Feb 20
STL
Lambert-St Louis
15h 35m
1 stop
PHX
Phoenix Sky Harbor Intl
Frontier
Jan 21
PHX
Phoenix Sky Harbor Intl
15h 49m
1 stop
STL
Lambert-St Louis
Jan 24
STL
Lambert-St Louis
9h 38m
1 stop
PHX
Phoenix 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 Frontier
Cheapest
Best
Quickest
Frontier
Dec 12
PHX
Phoenix Sky Harbor Intl
19h 11m
1 stop
STL
Lambert-St Louis
Multiple Airlines
Dec 18
PHX
Phoenix Sky Harbor Intl
18h 22m
2 stops
STL
Lambert-St Louis
Frontier
Dec 14
PHX
Phoenix Sky Harbor Intl
10h 16m
1 stop
STL
Lambert-St Louis

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 United Airlines may have put in place flexible cancellation policies. Use our site to search for all of the airlines offering this flexibility to you.


Alternative routes for Phoenix to St. Louis

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Phoenix to Kansas City Flights
Fastest flight time
2h 37m
Cheapest price
$130
Tucson to Kansas City Flights
Fastest flight time
8h 24m
Cheapest price
$203
Tucson to St. Louis Flights
Fastest flight time
5h 57m
Cheapest price
$250

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