Flights from St. Louis to Phoenix Sky Harbor

Our cheapest offers for flights from St. Louis to Phoenix Sky Harbor

Here you can compare cheap flights from St. Louis (STL) to Phoenix Sky Harbor (PHX) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to Phoenix Sky Harbor. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Best option
St. Louis
Phoenix - Sky Harbor
Outbound
04/26/25
direct
AA0590
03h 25min
Return
05/23/25
direct
AA0890
03h 00min
American Airlines ?
$480
St. Louis
Phoenix - Sky Harbor
Outbound
04/26/25
1 Stopover (IAH)
UA6345, UA1798
08h 41min
Return
05/23/25
1 Stopover (IAH)
UA1911, UA1326
05h 51min
United Airlines ?
$480
St. Louis
Phoenix - Sky Harbor
Outbound
04/26/25
1 Stopover (SFO)
UA1315, UA1227
29h 23min
Return
05/23/25
1 Stopover (IAH)
UA1911, UA1326
05h 51min
United Airlines ?
$506
St. Louis
Phoenix - Sky Harbor
Outbound
04/26/25
direct
AA2303
03h 28min
Return
05/23/25
direct
AA2303
03h 03min
American Airlines ?
$571
St. Louis
Phoenix - Sky Harbor
Outbound
04/26/25
1 Stopover (SEA)
AS0473, AS0974
10h 51min
Return
05/23/25
1 Stopover (SEA)
AS0603, AS0472
10h 16min
Alaska Airlines ?
$584
St. Louis
Phoenix - Sky Harbor
Outbound
04/26/25
1 Stopover (SEA)
AS0388, AS0644
10h 11min
Return
05/23/25
1 Stopover (SEA)
AS0603, AS0472
10h 16min
Alaska Airlines
$588
St. Louis
Phoenix - Sky Harbor
Outbound
04/26/25
direct
AA2303
03h 28min
Return
05/23/25
direct
AA2303
03h 03min
American Airlines ?
$1,348
Prices based on recent searches, subject to last-minute changes
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Tips and tricks to help you find cheap flights from St. Louis to Phoenix Sky Harbor

Favorite airline: Spirit Airlines
Spirit Airlines is the most popular airline for flights from St. Louis to Phoenix - Sky Harbor.
Spirit Airlines
30 %
Frontier Airlines
22 %
American Airlines
14 %
Direct flights are more expensive
Direct flights on this route are $328.00 more expensive on average than flights with a stopover.
non stop flight
1 stop
2 stops
03h 25min
06h 03min
27h 20min
$483
$155
$430
Favourite connection: via Las Vegas
71 % of booked tickets on this route are for flights with a transfer in Las Vegas.
Route
bookings
1 stopover Las Vegas - McCarran International Airport, NV
06h 03min, from $155
71 %
Direct flights
03h 25min, from $483
17 %
1 stopover Hartsfield-Jackson Atlanta International Airport, GA
06h 55min, from $500
8 %

Important flight information

Flight information: St. Louis - Phoenix - Sky Harbor

Roundtrip from $479.36
Flight duration min. 03:27 / max. 08:20
Return flight duration min. 02:45/ max. 09:15
Distance 2029 km
Flights per week 91
Departure airport Airport St. Louis - Lambert International Airport (STL)
Arrival airport Airport Phoenix - Sky Harbor International Airport (PHX)
Destination country Flights to United States
Alternative routes to United States
Alternative flights to Phoenix - Sky Harbor
Flight destinations with a similar price
Flight destinations with a similar price