
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $140 (Kiwi.com) |
One-way from | $65 (Kiwi.com) |
Popular in | April |
Cheapest in | January |
Average price | $365 |
Good round-trip deal | $315 or less |
Good one-way deal | $153 or less |
Fly from
Fly to
Route
Depart
Return
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Thu 4/16
5:00 am-12:50 pm
1 stop5h 50m
Lambert-St Louis
Sun 4/19
9:55 pm-11:20 pm
Nonstop3h 25m
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Thu 5/14
7:40 pm-12:30 am
Nonstop2h 50m
Lambert-St Louis
Sun 5/17
5:55 am-9:50 am
1 stop5h 55m
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Fri 3/27
5:00 am-9:50 am
Nonstop2h 50m
Lambert-St Louis
Mon 3/30
5:15 am-6:50 am
Nonstop3h 35m
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Thu 3/26
7:01 pm-11:59 pm
Nonstop2h 58m
Lambert-St Louis
Mon 3/30
2:31 pm-4:04 pm
Nonstop3h 33m
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Sun 4/26
5:30 am-10:20 am
Nonstop2h 50m
Lambert-St Louis
Thu 4/30
9:40 pm-11:05 pm
Nonstop3h 25m
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Tue 3/17
6:30 pm-11:20 pm
Nonstop2h 50m
Lambert-St Louis
Fri 3/20
5:15 am-6:50 am
Nonstop3h 35m
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Sat 5/2
8:00 am-9:08 pm
2 stops11h 08m
Lambert-St Louis
Mon 5/18
5:23 pm-11:38 pm
1 stop8h 15m
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Sun 3/15
6:50 am-9:49 am
1 stop24h 59m
Lambert-St Louis
Sat 3/21
8:12 pm-11:51 pm
1 stop5h 39m
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Fri 4/24
11:18 pm-10:56 am
1 stop9h 38m
Lambert-St Louis
Mon 4/27
2:40 pm-9:59 pm
2 stops9h 19m
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Mon 3/2
3:45 pm-10:55 pm
2 stops6h 10m
Lambert-St Louis
Fri 4/3
12:10 pm-4:30 pm
2 stops6h 20m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars |
To ensure you get the cheapest price possible for a flight from Phoenix Sky Harbor Intl Airport to St. Louis, you should look to book at least 25 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Currently, January is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to St. Louis (average of $93). Flying from Phoenix Sky Harbor Intl Airport to St. Louis in April is currently the most expensive (average of $310). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
A simple way to save on the total cost of your ticket is to fly from Phoenix Sky Harbor Intl Airport to St. Louis in the afternoon. If you’re flexible enough to do this you can expect to save up to 6% on your trip compared to booking a flight in the evening.
Travelers seeking maximum savings on their Phoenix Sky Harbor Intl Airport to St. Louis flight should consider departing on Monday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Denver (DEN) – chosen by Cheapflights users on 67% of 1-stop itineraries from Phoenix Sky Harbor Intl Airport to St. Louis on Cheapflights.
Las Vegas (LAS) is the most affordable 1-stop option, with an average round-trip price of $174.
Flights via Denver (DEN) have the shortest average one-way travel time for 1-stop routes: 7h 10m.
Flights via Denver (DEN) offer the fastest connection on this route, with an average layover time of 6h 03m.
Boarding
Entertainment
Food
Overall
Crew
Comfort
Reviews
Anonymous,Feb 2026
DEN - BDL
Boarding
Entertainment
Food
Overall
Crew
Comfort
Reviews
Anonymous,Feb 2026
DEN - BDL
Boarding
Entertainment
Food
Overall
Crew
Comfort
Reviews
Anonymous,Feb 2026
DEN - BDL
Boarding
Entertainment
Food
Overall
Crew
Comfort
Reviews
Anonymous,Feb 2026
DEN - BDL
Boarding
Entertainment
Food
Overall
Crew
Comfort
Reviews
Anonymous,Feb 2026
DEN - BDL
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$101 | Average$217 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$229 | Average$387 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$236 | Average$346 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$257 | Average$394 | FlexibilityNo cancel fee | On-time63% |