$84 Find Cheap Flights from Phoenix to St. Louis - Compare and Save

Seating with armrests is available in several locations across the airport, most of which are in Terminal 2 and Concourse C. It is recommended by reviewers that you bring a sleeping bag, travel blanket, or additional layers of clothing with you if you want to sleep at this airport since it is believed to be very chilly.

Near gate C3 at STL is a play area designated specifically for children. This is an educational play exhibit with a transportation-based theme that has a child-sized facsimile of a light rail train and a MetroLink train as well as a child-sized airplane and air traffic control tower.

If you are traveling downtown, using Metrolink is an option that is not only speedy but also affordable and easy. The St. Louis International Airport (STL) is about 15 miles from the city's central business district. It takes around 19min to complete.

No rail can take passengers directly from downtown Phoenix to the terminal building at the Phoenix airport. To begin, you will need to ride a Valley Metro Rail train to the rail station at 44th Street and Washington and then transfer to the free PHX Sky Train® to go to Terminal 3 or 4. The entire amount of time spent traveling is around half an hour.

Among airlines operating Phoenix Sky Harbor Intl Airport to St. Louis flights:

• Southwest: offers free seat selection
• American Airlines: offers extra legroom; offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

2 airlines operate flights between Phoenix Sky Harbor Intl Airport and St. Louis. The airlines offering nonstop flights on this route include:
• Southwest
• American Airlines

Flights from Phoenix Sky Harbor Intl Airport to St. Louis usually depart from Phoenix Sky Harbor Intl (PHX) and arrive at Lambert-St Louis (STL).

Here are some options for this route, based on selected ticket types and cabin classes:

• American Airlines: a cabin bag and a checked bag in Economy Class
• Southwest: a cabin bag in Economy Class class
• JetBlue: a cabin bag in Economy Class class

Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

Two cabin classes are available on flights from Phoenix Sky Harbor Intl Airport to St. Louis:

• Economy Class
• First Class

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $227 round-trip via Las Vegas Harry Reid Intl (LAS), compared to $398 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Boeing 737 MAX 8 family is used most often on this route, operated mainly by Southwest and American Airlines. Other aircraft seen on the route include Boeing 737-800 variants.

One-stop flights from Phoenix Sky Harbor Intl Airport to St. Louis most commonly connect through:

• Denver Intl (DEN) - 58% of one-stop connections
• Las Vegas Harry Reid Intl (LAS) - 26% of one-stop connections
• Dallas/Fort Worth (DFW) - 7% of one-stop connections
• Salt Lake City (SLC) - 5% of one-stop connections

Denver Intl (DEN) handles the largest share of one-stop connections on this route.

On the Phoenix Sky Harbor Intl Airport to St. Louis route, being flexible with your departure day can save you up to 16%. Saturday is the cheapest day at $353 round-trip on average, while Sunday is the most expensive at $416: a $63 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

Morning is the busiest departure period on Phoenix Sky Harbor Intl Airport to St. Louis flights, with 51% of flights leaving in that window. Evening departures account for 33%, afternoon flights for 16%, and night flights for 0%.

Some of the most popular sights in St. Louis are Downtown St. Louis, Busch Stadium and Enterprise Center. These are among the most viewed places in St. Louis on KAYAK.

A nonstop flight from Phoenix Sky Harbor Intl Airport to St. Louis takes 2h 57m, covering 1,258 miles.

These are the earliest and latest flight times available from Phoenix Sky Harbor Intl Airport to St. Louis:

• Earliest: departs at 5:00 am and lands at 7:57 am
• Latest: departs at 8:25 pm and lands at 11:22 pm.

The flight takes about 2h 57m.

Last-minute fares on this route - booked within 2 weeks of departure - run 14% above the route average of $378. Book 4 weeks before departure for the lowest fares.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $282 to $2,718. That means the highest observed fare was about 10x higher than the lowest one.

One-way fares from Phoenix Sky Harbor Intl Airport to St. Louis are currently lower than usual. Average one-way flight prices are about $131, which is 34% below the typical average for this route.

Flying via Minneapolis St Paul (MSP) gives the shortest average 1-stop total travel time at 5h 45m, compared with 6h 20m via Salt Lake City (SLC) and 6h 21m via Dallas/Fort Worth (DFW).

St. Louis is 2 hours ahead of Phoenix Sky Harbor Intl Airport (Central Time vs Mountain Time). Plan for the time shift when scheduling connections or first-day activities.

Lambert-St Louis Airport (STL) hosts 5 major car rental companies, with daily rates starting from around $31 for economy cars. Top options include:
· Hertz
· Budget
· Alamo
· Enterprise Rent-A-Car
· Payless

Round-trip flights from Phoenix Sky Harbor Intl Airport to St. Louis range from $299 to $450, with an average of $378 over the past 12 months. Anything below $299 counts as a good deal.

American Airlines is the only airline on the Phoenix Sky Harbor Intl Airport to St. Louis route offering in-flight Wi-Fi. Pricing depends on fare class.