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Cheap flights from Phoenix to St Louis (PHX - STL)

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The best prices from Phoenix to St Louis are usually found in September or January, booked 34 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

How to find the cheapest flight from
Phoenix (PHX) to St Louis (STL)

PHX - STL
Price
$272 - $352
STL
Temperature
44.6 - 89.6 °F
STL
Rainfall
2.2 - 5.1 inches
Popular in December High demand for flights, 8% potential price rise
Cheapest in September Best time to find cheap flights, 16% potential price drop
Round-trip from $272 From Phoenix to St Louis
One-way from $113 One-way flight from Phoenix to St Louis
Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Phoenix to St Louis?

Tuesday is generally a great day to depart. Flying on this day could help you save up to 19%.

How far in advance should I book a flight from Phoenix to St Louis?

Travelers have found it’s best to book a flight 61 days in advance to save up to 27% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 61 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Phoenix to St Louis 1-2 weeks in advance for as low as $164, or $181 for flights within the next 24 hours.

When is the cheapest time to fly from Phoenix to St Louis (PHX - STL)?

One of the essential ways to save on airfare from Phoenix to St Louis is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 28% on airfare.

Cheap flights from Phoenix to St Louis in September, October 2020

The best prices found for PHX to STL flights for September, October
21 Oct - 27 Oct
$158pp
PHX
Phoenix Sky Harbor Intl
Multiple Airlines
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
PHX
Phoenix Sky Harbor Intl
15 Oct - 20 Oct
$167pp
PHX
Phoenix Sky Harbor Intl
Multiple Airlines
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
PHX
Phoenix Sky Harbor Intl
7 Oct - 13 Oct
$169pp
PHX
Phoenix Sky Harbor Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
PHX
Phoenix Sky Harbor Intl

Phoenix to St Louis 2020 flight deals

Cheap flights to St Louis from Phoenix found for this year
21 Oct - 27 Oct
$158pp
PHX
Phoenix Sky Harbor Intl
Multiple Airlines
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
PHX
Phoenix Sky Harbor Intl
15 Oct - 20 Oct
$167pp
PHX
Phoenix Sky Harbor Intl
Multiple Airlines
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
PHX
Phoenix Sky Harbor Intl
7 Oct - 10 Oct
$169pp
PHX
Phoenix Sky Harbor Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
PHX
Phoenix Sky Harbor Intl

Non-stop flights to St Louis from Phoenix

Save time with Phoenix to St Louis direct flight deals
14 Jan - 17 Jan
$321pp
PHX
Phoenix Sky Harbor Intl
Major Airline
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
Major Airline
Non-Stop
PHX
Phoenix Sky Harbor Intl
17 Oct - 19 Oct
$325pp
PHX
Phoenix Sky Harbor Intl
Major Airline
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
Major Airline
Non-Stop
PHX
Phoenix Sky Harbor Intl

Last minute flights from Phoenix to St Louis

Late deals on round-trip flights to St Louis from Phoenix, departing today and this week
23 Sep - 27 Sep
$192pp
PHX
Phoenix Sky Harbor Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Sun Country Air
 
1 STOP
PHX
Phoenix Sky Harbor Intl
26 Sep - 27 Sep
$196pp
PHX
Phoenix Sky Harbor Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Sun Country Air
 
1 STOP
PHX
Phoenix Sky Harbor Intl
23 Sep - 1 Oct
$204pp
PHX
Phoenix Sky Harbor Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
PHX
Phoenix Sky Harbor Intl

One-way flights to St Louis from Phoenix

The cheapest one-way flights from Phoenix to St Louis
2:00 am - 9:39 am
Delta
1 Stop
5h 39m
PHX - STL
Delta
$113
Delta
2:00 am - 9:39 am
Delta
1 Stop
5h 39m
PHX - STL
Delta
$128
Delta
2:25 am - 12:33 pm
Delta
1 Stop
8h 08m
PHX - STL
Delta
$183
Delta

Related info for your journey

Useful info, stats and facts about Phoenix to St Louis flights.

Flight FAQs

From Phoenix to St Louis

Are flight prices decreasing from Phoenix to St Louis due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Phoenix and St Louis for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Can I find flights from Phoenix to St Louis for under $200 on Cheapflights?

Yes, there are multiple flights from Phoenix to St Louis for under $200. The cheapest flight booked recently is on Multiple Airlines for just $158, but on average you can expect to pay $183.

Are there nonstop flights from Phoenix to St Louis for under $400 on Cheapflights?

Cheapflights has at least 2 direct flights from Phoenix to St Louis under $400. A good price for a nonstop flight from Phoenix to St Louis is less than $323.

Are there last-minute flights available from Phoenix to St Louis for under $200?

There are currently 20+ open flights from Phoenix to St Louis within the next 7 days for less than $200.

How popular is this flight route?

Flights from Phoenix Sky Harbor Intl to Lambert-St Louis have been viewed 129 times in the past calendar month.

Does it rain more in Phoenix or St Louis?

Phoenix will have less rainfall in 2 compared to St Louis over the next 5 days.

Is Phoenix weather warmer or cooler than St Louis?

You can imagine temperatures to be in the 108 °F range in July. The weather in St Louis is generally colder than Phoenix's. As flight availability is subject to become more limited as peak season approaches it is ideal to book in a timely manner.

What are the cheapest airlines to fly from Phoenix to St Louis one-way?

For one-way options, check prices for Delta. According to our data, you can fly for as low as $113.

Alternative routes for Phoenix to St Louis

Destination information for St Louis

Things to know before you go. Useful info for your trip from Phoenix to St Louis
Average temperature for September in St Louis
82.4 °F
Avg rainfall for September in St Louis
3.0 ″

Airports servicing Phoenix

Airports servicing St. Louis

Hourly flight availability from Phoenix to St Louis

Morning 6 AM to noon 78% of PHX to STL departures
Afternoon Noon to 6 PM 21% of PHX to STL departures
Early morning Midnight to 6 AM 1% of PHX to STL departures
Evening 6 PM to midnight 0% of PHX to STL departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Phoenix to St Louis
Sunday
7 daily flights
Monday
7 daily flights
Tuesday
7 daily flights
Wednesday
7 daily flights
Thursday
7 daily flights
Friday
7 daily flights
Saturday
7 daily flights
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