Cheap flights from St. Louis (STL) to Sky Harbor Intl (PHX)

STL — PHX
Aug 16 — Aug 231

The best prices from Lambert-St Louis to Phoenix Sky Harbor Intl are usually found in January or February, booked 44 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

How to find the cheapest flight from St. Louis (STL) to Sky Harbor Intl (PHX)

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

STL - PHX

Price

$136 - $493

PHX

Temperature

55.4 - 95 °F

PHX

Rainfall

0 - 1.1 inches

Popular inJuneHigh demand for flights, 37% potential price rise
Cheapest inJanuaryBest time to find cheap flights, 56% potential price drop
Round-trip from$136From Lambert-St Louis to Phoenix Sky Harbor Intl
One-way from$95One-way flight from Lambert-St Louis to Phoenix Sky Harbor Intl

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

Leaving on a Monday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 14% on the overall cost on flights from St. Louis to Phoenix Sky Harbor Intl Airport.

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

Users have found that booking a flight from St. Louis to Phoenix Sky Harbor Intl Airport at least 42 days early can save you up to 24% on average compared to booking a flight this week. If booking 42 days before your flight isn’t an option for you, users have found flights from St. Louis to Phoenix Sky Harbor Intl Airport for as little as $277 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $308 for flights departing within the next 3 days.

What is the cheapest month to fly from St. Louis to Phoenix Sky Harbor Intl Airport?

The best pricing can be found in the month of January. Prices to Phoenix Sky Harbor Intl Airport from St. Louis average $308. You can even find prices in January for less than $308, as users have found deals to Phoenix Sky Harbor Intl Airport from as low as $73. The month of June appears to be one of the more expensive times to travel to Phoenix Sky Harbor Intl Airport from St. Louis. Flying in the targeted month can save you up to 59%.

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

When flying from St. Louis to Phoenix Sky Harbor Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 38% versus a flight at noon.

Cheap flights from St. Louis to Sky Harbor Intl in August, September 2022

The best prices found for STL to PHX flights for August, September
Sep 21 - Sep 24
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

25h 26m
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

11h 17m
$129

Spirit Airlines

Pick Dates

Deal found 10/8/22

Sep 19 - Sep 22
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

18h 35m
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

11h 12m
$133

Multiple Airlines

Pick Dates

Deal found 9/8/22

Sep 16 - Sep 24
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

18h 35m
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

11h 17m
$134

Multiple Airlines

Pick Dates

Deal found 9/8/22

St. Louis to Sky Harbor Intl 2022 flight deals

Cheap flights to Sky Harbor Intl from St. Louis found for this year
Sep 21 - Sep 24
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

25h 26m
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

11h 17m
$129

Spirit Airlines

Pick Dates

Deal found 10/8/22

Sep 19 - Sep 22
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

18h 35m
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

11h 12m
$133

Multiple Airlines

Pick Dates

Deal found 9/8/22

Sep 16 - Sep 24
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

18h 35m
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

11h 17m
$134

Multiple Airlines

Pick Dates

Deal found 9/8/22

Cheap Spirit Airlines flights from St. Louis to Sky Harbor Intl

Sep 21 - Sep 24
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

25h 26m
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

11h 17m
$127

Spirit Airlines

Pick Dates

Deal found 11/8/22

Sep 21 - Sep 24
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

25h 26m
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

11h 17m
$129

Spirit Airlines

Pick Dates

Deal found 10/8/22

Sep 7 - Sep 14
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

25h 26m
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

11h 17m
$139

Spirit Airlines

Pick Dates

Deal found 10/8/22

Cheap Frontier flights from St. Louis to Sky Harbor Intl

Aug 23 - Aug 30
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

19h 36m
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

19h 05m
$143

Frontier

Pick Dates

Deal found 9/8/22

Aug 22 - Aug 25
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

27h 18m
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

10h 13m
$152

Frontier

Pick Dates

Deal found 9/8/22

Nov 2 - Nov 5
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

7h 10m
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

6h 31m
$159

Frontier

Pick Dates

Deal found 8/8/22

Non-stop flights to Sky Harbor Intl from St. Louis

Save time with St. Louis to Sky Harbor Intl direct flight deals
Feb 1 - Feb 4
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

Nonstop

3h 21m
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

Nonstop

2h 58m
$157

Spirit Airlines

Pick Dates

Deal found 9/8/22

Dec 4 - Dec 8
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

Nonstop

3h 21m
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

Nonstop

2h 58m
$158

Spirit Airlines

Pick Dates

Deal found 10/8/22

Dec 4 - Dec 8
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

Nonstop

3h 21m
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

Nonstop

2h 58m
$160

Spirit Airlines

Pick Dates

Deal found 10/8/22

Last minute flights from St. Louis to Sky Harbor Intl

Late deals on return flights to Sky Harbor Intl from St. Louis, departing today and this week
Aug 18 - Sep 10
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

23h 27m
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

12h 37m
$144

Multiple Airlines

Pick Dates

Deal found 11/8/22

Aug 19 - Aug 24
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

22h 28m
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

23h 20m
$145

Spirit Airlines

Pick Dates

Deal found 8/8/22

Aug 18 - Aug 23
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

19h 36m
PHX

Phoenix Sky Harbor Intl

STL

Lambert-St Louis

1 stop

10h 55m
$153

Multiple Airlines

Pick Dates

Deal found 9/8/22

One-way flights to Sky Harbor Intl from St. Louis

The cheapest one-way flights from St. Louis to Sky Harbor Intl
Aug 29
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

22h 28m
$62

Spirit Airlines

Pick Dates

Deal found 8/8/22

Sep 7
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

11h 11m
$65

Frontier

Pick Dates

Deal found 9/8/22

Aug 24
STL

Lambert-St Louis

PHX

Phoenix Sky Harbor Intl

1 stop

22h 28m
$70

Spirit Airlines

Pick Dates

Deal found 10/8/22

Related info for your journey

Useful info, stats and facts about St. Louis to Sky Harbor Intl flights.

What airport do you fly from for flights from St. Louis to Phoenix Sky Harbor Intl?

For a flight from St. Louis to Phoenix Sky Harbor Intl, you will be flying from 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 10 outbound flights to Phoenix Sky Harbor Intl per day. 8 airlines have flights to Phoenix Sky Harbor Intl from Lambert-St Louis on a regular basis.

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

Some of our airline partners flying from Lambert-St Louis to Phoenix Sky Harbor Intl 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 St. Louis to Phoenix Sky Harbor Intl Airport for under $200 on Cheapflights?

Yes, there are multiple flights from St. Louis to Phoenix Sky Harbor Intl Airport for under $200. The cheapest flight booked recently is on Spirit Airlines for just $127, but on average you can expect to pay $145.

Are there nonstop flights from St. Louis to Phoenix Sky Harbor Intl Airport for under $200 on Cheapflights?

Cheapflights has at least 20 direct flights from St. Louis to Phoenix Sky Harbor Intl Airport under $200. A good price for a nonstop flight from St. Louis to Phoenix Sky Harbor Intl Airport is less than $321.

Are there last-minute flights available from St. Louis to Phoenix Sky Harbor Intl Airport for under $200?

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

How popular is this St. Louis to Phoenix Sky Harbor Intl Airport flight route?

Flights from Lambert-St Louis to Phoenix Sky Harbor Intl have been viewed 123 times in the past calendar month.

What are the cheapest airlines flying from St. Louis to Phoenix Sky Harbor Intl Airport round-trip?

Flying on Spirit Airlines is currently your cheapest option to Phoenix Sky Harbor Intl Airport, with prices starting at $127. Another option worth looking into is Frontier, starting at $143 round trip. Spirit Airlines is priced at 58% lower than the current average price of a flight leaving 3 months from now.

What are the most popular airlines that fly from St. Louis to Phoenix Sky Harbor Intl Airport?

Consider American Airlines, Delta or Frontier when booking your flight. These represent the most popular airlines when flying from St. Louis to Phoenix Sky Harbor Intl Airport.

What are the most reliable airlines from St. Louis to Phoenix Sky Harbor Intl Airport?

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from St. Louis to Phoenix Sky Harbor Intl Airport on time: American Airlines (78%), Southwest (68%), Alaska Airlines (67%).

What are the cheapest flights from St. Louis to Phoenix Sky Harbor Intl Airport?

On average you can expect to pay $475 for a flight from St. Louis to Phoenix Sky Harbor Intl Airport. The cheapest flight overall is $50 while the most popular route, (Lambert-St Louis - Phoenix Sky Harbor Intl) is currently priced at $129.

Alternative routes for St. Louis to Sky Harbor Intl

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

Top 6 airlines flying from St. Louis to Sky Harbor Intl

The chart below displays the airlines Cheapflights users traveling from St. Louis to Sky Harbor Intl choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Juneyao AirlinesCheapest$9Average$21FlexibilityNo cancel feeOn-time66%COVID-19 safety
Search Juneyao Airlines flights
Spirit AirlinesCheapest$60Average$183FlexibilityNo cancel feeOn-time65%COVID-19 safety
Search Spirit Airlines flights
FrontierCheapest$78Average$222FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search Frontier flights
DeltaCheapest$116Average$494FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
United AirlinesCheapest$169Average$593FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
American AirlinesCheapest$184Average$418FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights

Hourly flight availability from St. Louis to Sky Harbor Intl

See what time of day planes typically take off from St. Louis to Sky Harbor Intl
21%of flight departuresEarly morningMidnight to 6 am
34%of flight departuresMorning6 am to noon
44%of flight departuresAfternoonNoon to 6 pm
1%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from St. Louis to Sky Harbor Intl

See how many times per day planes take to the skies headed from St. Louis to Sky Harbor Intl
Sunday10daily flights
Monday10daily flights
Tuesday10daily flights
Wednesday10daily flights
Thursday10daily flights
Friday10daily flights
Saturday10daily flights