Cheap flights from Phoenix to St. Louis (STL)

PHX — STL
Dec 12 — Dec 191

The best prices from Phoenix to Lambert-St Louis are usually found in February or January, booked 21 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

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

All the information you need to plan the best PH1 to STL flight in 2022: compare Phoenix to St. Louis flight prices with the expected peak season, weather and rainfall in St. Louis.

PHX - STL

Price

$166 - $519

STL

Temperature

32 - 80.6 °F

STL

Rainfall

2.2 - 4.7 inches

Popular inJuneHigh demand for flights, 33% potential price rise
Cheapest inFebruaryBest time to find cheap flights, 53% potential price drop
Round-trip from$166From Phoenix to Lambert-St Louis
One-way from$120One-way flight from Phoenix to Lambert-St Louis

What is the cheapest day to fly round-trip from Phoenix to St. Louis?

Travelers have found that booking a Tuesday departure is the best way to save up to 17% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

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

To save up to 20% on this flight, we recommend booking at least 21 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Phoenix to St. Louis from $309 1-2 weeks out and tickets from $388 for flights departing within the next 72 hours.

What is the cheapest month to fly from Phoenix to St. Louis?

February can be a great time to fly to St. Louis from Phoenix with a flight ticket averaging about $350. Cheapflights users have found deals in the month of February for as cheap as $65. The most expensive prices can be found in the month of June.

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

A simple way to save on the total cost of your ticket is to fly from Phoenix to St. Louis in the evening. If you’re flexible enough to do this you can expect to save up to 29% on your trip compared to booking a flight in the afternoon.

Cheap flights from Phoenix to St. Louis in December, January 2022

The best prices found for Phoenix to STL flights for December, January
Jan 14 - Jan 28
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

22h 15m
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

7h 37m
$154

Frontier

Pick Dates

Deal found 12/4

Jan 19 - Jan 23
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

13h 51m
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

25h 02m
$159

Multiple Airlines

Pick Dates

Deal found 12/4

Jan 14 - Jan 15
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

9h 35m
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

7h 04m
$160

Frontier

Pick Dates

Deal found 12/6

Phoenix to St. Louis 2022 flight deals

Cheap flights to St. Louis from Phoenix found for this year
Dec 8 - Dec 13
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

12h 26m
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

12h 06m
$165

Frontier

Pick Dates

Deal found 12/5

Dec 12 - Jan 5
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

12h 14m
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

10h 17m
$166

Multiple Airlines

Pick Dates

Deal found 12/6

Dec 8 - Dec 10
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

12h 26m
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

17h 08m
$168

Frontier

Pick Dates

Deal found 12/6

Cheap Frontier flights from Phoenix to St. Louis

Feb 1 - Feb 8
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

12h 19m
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

11h 43m
$149

Frontier

Pick Dates

Deal found 12/6

Jan 26 - Jan 28
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

13h 51m
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

7h 37m
$153

Frontier

Pick Dates

Deal found 12/7

Jan 14 - Jan 15
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

9h 35m
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

7h 04m
$160

Frontier

Pick Dates

Deal found 12/6

Cheap Delta flights from Phoenix to St. Louis

Dec 13 - Jan 10
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

7h 19m
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

9h 05m
$326

Delta

Pick Dates

Deal found 12/7

Dec 12 - Jan 5
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

9h 01m
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

7h 44m
$346

Delta

Pick Dates

Deal found 12/7

Dec 14 - Dec 19
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

7h 19m
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

8h 41m
$366

Delta

Pick Dates

Deal found 12/5

Non-stop flights to St. Louis from Phoenix

Save time with Phoenix to St. Louis direct flight deals
Jan 18 - Jan 25
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

Nonstop

2h 58m
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

Nonstop

3h 31m
$238

American Airlines

Pick Dates

Deal found 12/4

Jan 19 - Jan 25
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

Nonstop

2h 53m
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

Nonstop

3h 31m
$252

American Airlines

Pick Dates

Deal found 12/4

Feb 25 - Mar 1
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

Nonstop

2h 51m
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

Nonstop

3h 29m
$258

American Airlines

Pick Dates

Deal found 12/6

Last minute flights from Phoenix to St. Louis

Late deals on return flights to St. Louis from Phoenix, departing today and this week
Dec 16 - Dec 18
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

11h 33m
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

12h 04m
$165

Frontier

Pick Dates

Deal found 12/4

Dec 12 - Jan 5
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

12h 14m
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

10h 17m
$166

Multiple Airlines

Pick Dates

Deal found 12/6

Dec 14 - Jan 10
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

12h 14m
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

12h 45m
$168

Frontier

Pick Dates

Deal found 12/7

One-way flights to St. Louis from Phoenix

The cheapest one-way flights from Phoenix to St. Louis
Jan 24
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

14h 51m
$66

Frontier

Pick Dates

Deal found 12/5

Dec 19
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

12h 14m
$67

Frontier

Pick Dates

Deal found 12/6

Feb 1
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

12h 19m
$74

Frontier

Pick Dates

Deal found 12/6

Related info for your journey

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

What airport do you fly into for flights to St. Louis from Phoenix?

For a flight from Phoenix to St. Louis, you will be flying into Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city. Lambert-St Louis is the only St. Louis airport and it handles 8 inbound flights from Phoenix per day. 7 airlines have flights to Lambert-St Louis from Phoenix on a regular basis.

Which airlines flying from Phoenix to Lambert-St Louis have flexible cancellations due to COVID-19?

Some of our airline partners flying from Phoenix to Lambert-St Louis have new flexible policies in place due to COVID-19. American Airlines, Spirit Airlines, and Frontier are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like American Airlines with this kind of flexibility.

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 Frontier for just $149, but on average you can expect to pay $176.

Are there nonstop flights from Phoenix to St. Louis for under $300 on Cheapflights?

Cheapflights has at least 20 direct flights from Phoenix to St. Louis under $300. A good price for a nonstop flight from Phoenix to St. Louis is less than $344.

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.

What days are nonstop flights available from Phoenix to St. Louis?

Nonstop flights are available for this route on the following days: Sunday, Monday, Wednesday, Thursday, Friday, Saturday.

How popular is this Phoenix to St. Louis flight route?

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

How many flights depart from Phoenix to St. Louis on average per day?

3 flight departures from Phoenix to St. Louis per day on average.
Morning (6am - Noon) - 33% of flight departures
Afternoon (Noon - 6pm) - 67% of flight departures

How long is the flight from Phoenix to St. Louis?

For as low as $149, Frontier can have you in St. Louis from Phoenix in 12h 19m. Phoenix and St. Louis are separated by a distance of 1266 mi.

What is the cheapest airline to fly from Phoenix to St. Louis round-trip?

According to our current data, Frontier ($149), offers the cheapest pricing from Phoenix to St. Louis. Users have found that Frontier is 57% cheaper than the other options available to this destination.

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

For one-way options, check prices for Frontier. According to our data, you can fly for as low as $66. Users have also found prices from $119 and $120 on American Airlines and Spirit Airlines, respectively.

What are the most popular airlines that fly from Phoenix to St. Louis?

When booking a flight from Phoenix to St. Louis, you may want to consider flying on American Airlines, Delta or Frontier as they are the most popular for this route.

What are the most reliable airlines from Phoenix to St. Louis?

Before booking your flight to St. Louis from Phoenix, check out the most reliable airlines to get you to your destination on time: Alaska Airlines (81%), American Airlines (79%), Southwest( 73%).

What are the cheapest flights from Phoenix to St. Louis?

On average you can expect to pay $270 for a flight from Phoenix to St. Louis. The cheapest flight overall is $81 while the most popular route, (Phoenix Sky Harbor Intl - Lambert-St Louis) is currently priced at $160.

Alternative routes for Phoenix to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Phoenix to St. Louis

The chart below displays the airlines Cheapflights users traveling from Phoenix to St. Louis choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Juneyao AirlinesCheapest$14Average$22FlexibilityNo cancel feeOn-time66%COVID-19 safety
Search Juneyao Airlines flights
Spirit AirlinesCheapest$61Average$177FlexibilityNo cancel feeOn-time65%COVID-19 safety
Search Spirit Airlines flights
FrontierCheapest$149Average$208FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search Frontier flights
United AirlinesCheapest$212Average$496FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
American AirlinesCheapest$248Average$481FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights
DeltaCheapest$261Average$516FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights

Hourly flight availability from Phoenix to St. Louis

See what time of day planes typically take off from Phoenix to St. Louis
16%of flight departuresEarly morningMidnight to 6 am
56%of flight departuresMorning6 am to noon
27%of flight departuresAfternoonNoon to 6 pm
1%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Phoenix to St. Louis

See how many times per day planes take to the skies headed from Phoenix to St. Louis
Sunday2daily flights
Monday10daily flights
Tuesday10daily flights
Wednesday10daily flights
Thursday10daily flights
Friday10daily flights
Saturday4daily flights