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

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The best prices from Lambert-St Louis to Phoenix Sky Harbor Intl are usually found in August or July, booked 0 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 2021: compare St. Louis to Sky Harbor Intl flight prices with the expected peak season, weather and rainfall in Sky Harbor Intl.
STL - PHX
Price
$204 - $392
PHX
Temperature
55.4 - 95 °F
PHX
Precipitation
0 - 1.1 inches

Popular in

March

High demand for flights, 21% potential price rise

Cheapest in

August

Best time to find cheap flights, 34% potential price drop

Round-trip from

$204

From Lambert-St Louis to Phoenix Sky Harbor Intl

One-way from

$105

One-way flight from Lambert-St Louis to Phoenix Sky Harbor Intl

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 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.

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 August. Prices to Phoenix Sky Harbor Intl Airport from St. Louis average $308. You can even find prices in August for less than $308, as users have found deals to Phoenix Sky Harbor Intl Airport from as low as $108. The month of March 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 27%.

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 October, November 2021

The best prices found for STL to PHX flights for October, November
17 Nov - 18 Nov
$67pp
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
PHX
Phoenix Sky Harbor Intl
PHX
Phoenix Sky Harbor Intl
Spirit Airlines
Non-Stop
STL
Lambert-St Louis
22 Nov - 2 Dec
$83pp
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
PHX
Phoenix Sky Harbor Intl
PHX
Phoenix Sky Harbor Intl
Spirit Airlines
Non-Stop
STL
Lambert-St Louis
13 Nov - 20 Nov
$87pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
PHX
Phoenix Sky Harbor Intl
PHX
Phoenix Sky Harbor Intl
Spirit Airlines
Non-Stop
STL
Lambert-St Louis

Lambert-St Louis to Sky Harbor Intl 2021 flight deals

Cheap flights to Sky Harbor Intl from St. Louis found for this year
4 Dec - 11 Dec
$58pp
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
PHX
Phoenix Sky Harbor Intl
PHX
Phoenix Sky Harbor Intl
Spirit Airlines
Non-Stop
STL
Lambert-St Louis
4 Dec - 11 Dec
$59pp
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
PHX
Phoenix Sky Harbor Intl
PHX
Phoenix Sky Harbor Intl
Spirit Airlines
Non-Stop
STL
Lambert-St Louis
17 Nov - 18 Nov
$67pp
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
PHX
Phoenix Sky Harbor Intl
PHX
Phoenix Sky Harbor Intl
Spirit Airlines
Non-Stop
STL
Lambert-St Louis

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

Save time with St. Louis to Sky Harbor Intl direct flight deals
4 Dec - 11 Dec
$59pp
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
PHX
Phoenix Sky Harbor Intl
PHX
Phoenix Sky Harbor Intl
Spirit Airlines
Non-Stop
STL
Lambert-St Louis
17 Nov - 18 Nov
$67pp
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
PHX
Phoenix Sky Harbor Intl
PHX
Phoenix Sky Harbor Intl
Spirit Airlines
Non-Stop
STL
Lambert-St Louis
20 Jan - 25 Jan
$71pp
STL
Lambert-St Louis
Spirit Airlines
Non-Stop
PHX
Phoenix Sky Harbor Intl
PHX
Phoenix Sky Harbor Intl
Spirit Airlines
Non-Stop
STL
Lambert-St Louis

Last minute flights from St. Louis to Sky Harbor Intl

Late deals on round-trip flights to Sky Harbor Intl from St. Louis, departing today and this week
3 Nov - 9 Nov
$108pp
STL
Lambert-St Louis
Frontier
 
1 STOP
PHX
Phoenix Sky Harbor Intl
PHX
Phoenix Sky Harbor Intl
Frontier
 
1 STOP
STL
Lambert-St Louis
3 Nov - 10 Nov
$113pp
STL
Lambert-St Louis
Frontier
 
1 STOP
PHX
Phoenix Sky Harbor Intl
PHX
Phoenix Sky Harbor Intl
Frontier
 
1 STOP
STL
Lambert-St Louis
3 Nov - 6 Nov
$128pp
STL
Lambert-St Louis
Frontier
 
1 STOP
PHX
Phoenix Sky Harbor Intl
PHX
Phoenix Sky Harbor Intl
Frontier
 
1 STOP
STL
Lambert-St Louis

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

The cheapest one-way flights from St. Louis to Sky Harbor Intl
12:25 pm - 3:13 am
Frontier
1 Stop
15h 48m
STL - PHX
Frontier
$105
Kiwi.com
5:45 am - 7:58 am
Spirit Airlines
Nonstop
3h 13m
STL - PHX
Spirit Airlines
$115
Kiwi.com
10:30 am - 1:10 pm
Multiple Airlines
2 Stops
28h 40m
STL - PHX
Multiple Airlines
$117
Gotogate

Related info for your journey

Useful info, stats and facts about <span class="emphasized">St. Louis</span> to <span class="emphasized">Sky Harbor Intl</span> flights.

Flight FAQs

From St. Louis to Sky Harbor Intl

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 9 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, Frontier, and United Airlines 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 $100 on Cheapflights?

Yes, there are multiple flights from St. Louis to Phoenix Sky Harbor Intl Airport for under $100. The cheapest flight booked recently is on Spirit Airlines for just $58, but on average you can expect to pay $82.

Are there nonstop flights from St. Louis to Phoenix Sky Harbor Intl Airport for under $100 on Cheapflights?

Cheapflights has at least 20 direct flights from St. Louis to Phoenix Sky Harbor Intl Airport under $100. A good price for a nonstop flight from St. Louis to Phoenix Sky Harbor Intl Airport is less than $107.

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.

What days are nonstop flights available from St. Louis to Phoenix Sky Harbor Intl Airport?

Nonstop flights can be found on the following days: Friday, Saturday.

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.

How many flights depart from St. Louis to Phoenix Sky Harbor Intl Airport on average per day?

On average 5 flights depart from St. Louis to Phoenix Sky Harbor Intl Airport per day.
Morning (6am - Noon) - 40% of flight departures
Afternoon (Noon - 6pm) - 40% of flight departures
Evening (6pm - Midnight) - 20% of flight departures

How long is the flight from St. Louis to Phoenix Sky Harbor Intl Airport?

A quick flight from St. Louis to Phoenix Sky Harbor Intl Airport can take about 3h 25m. Spirit Airlines provides one of the quickest options available for as low as $58. There are 1266 mi between St. Louis and Phoenix Sky Harbor Intl Airport. This flight may include one or multiple stops.

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 $58. Another option worth looking into is Frontier, starting at $84 round trip. Spirit Airlines is priced at 81% lower than the current average price of a flight leaving 3 months from now.

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 (95%), Alaska Airlines (95%), Southwest (71%).

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

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

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

On average you can expect to pay $551 for a flight from St. Louis to Phoenix Sky Harbor Intl Airport. The cheapest flight overall is $103 while the most popular route, (Lambert-St Louis - Phoenix Sky Harbor Intl) is currently priced at $59.

Related searches

Flights to Sky Harbor Intl from St. Louis (STL)
Flights to St. Louis Flights to Sky Harbor Intl

Rent a Car

Car Rentals at Sky Harbor Intl Car Rentals in Arizona

COVID Restrictions

View COVID Travel Restrictions for Sky Harbor Intl (PHX)

Do I need a COVID test to fly to Sky Harbor Intl from St. Louis?

Information is based on travel restrictions for travel to Phoenix Sky Harbor Intl within the United States

Most visitors from Lambert-St Louis need to provide a negative COVID-19 test result and/or quarantine to enter Phoenix Sky Harbor Intl.

COVID-19 testing requirements
Visitors from Lambert-St Louis must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Phoenix Sky Harbor Intl.

Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering Phoenix Sky Harbor Intl.

Do I need a test to fly back to St. Louis from Sky Harbor Intl?

Returning to Lambert-St Louis from Phoenix Sky Harbor Intl

COVID-19 testing requirements
Visitors from Phoenix Sky Harbor Intl must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Lambert-St Louis.

Quarantine requirements
Visitors from Phoenix Sky Harbor Intl are not required to quarantine after entering Lambert-St Louis.

Hide COVID Travel Restrictions for Sky Harbor Intl (PHX)

Alternative routes for St. Louis to Sky Harbor Intl

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

Destination information for Sky Harbor Intl

Things to know before you go - useful duration and weather info for your trip from St. Louis to Sky Harbor Intl.
Flight duration from STL to Phoenix Sky Harbor Intl
3h 12m

Airports servicing St. Louis

Airports servicing Phoenix

Top 6 airlines flying from Lambert-St Louis to Phoenix 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.
Airline Cheapest Average Flexibility On-time COVID-19 safety
United Airlines
$61 $276 No cancel fee 69%
Allegiant Air
$94 $189 No cancel fee 88%
Frontier
$103 $238 No cancel fee 62%
Sun Country Air
$116 $263 No cancel fee 83%
Delta
$162 $305 No cancel fee N/A
American Airlines
$175 $378 No cancel fee 71%

Hourly flight availability from St. Louis to Sky Harbor Intl

See what time of day planes typically take off from St. Louis towards Sky Harbor Intl.
Afternoon Noon to 6 PM 52% of STL to PHX departures
Early morning Midnight to 6 AM 41% of STL to PHX departures
Morning 6 AM to noon 7% of STL to PHX departures
Evening 6 PM to midnight 0% of STL to PHX departures
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.
Sunday
11 daily flights
Monday
10 daily flights
Tuesday
8 daily flights
Wednesday
8 daily flights
Thursday
10 daily flights
Friday
10 daily flights
Saturday
9 daily flights
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