$38 Find Cheap Flights from Phoenix to St. Louis - Compare and Save

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

• Earliest: departs at 1:01 am and lands at 3:56 am
• Latest: departs at 9:25 pm and lands at 12:20 am.

The flight takes about 2h 55m.

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

• Economy Class
• Business Class
• First Class

A nonstop flight from Phoenix Sky Harbor Intl Airport to St. Louis takes 2h 55m, covering 1,258 miles.

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.

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.

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

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 $45–$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. Other aircraft seen on the route include Boeing 737-800 variants.

Morning is the busiest departure period on Phoenix Sky Harbor Intl Airport to St. Louis flights, with 43% of flights leaving in that window. Afternoon departures account for 29%, evening flights for 28%, and night flights for 0%.

Two airlines offer in-flight Wi-Fi on Phoenix Sky Harbor Intl Airport to St. Louis flights:

• American Airlines
• JetBlue

Pricing varies by airline and fare class. Some plans are included with the ticket or loyalty program; others are paid add-ons priced by flight length.

One-way fares from Phoenix Sky Harbor Intl Airport to St. Louis are currently lower than usual. Average one-way flight prices are about $135, which is 32% below the typical average for this route.

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

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).

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

• Denver Intl (DEN) - 62% of one-stop connections
• Las Vegas Harry Reid Intl (LAS) - 23% of one-stop connections
• Dallas/Fort Worth (DFW) - 6% of one-stop connections
• Salt Lake City (SLC) - 4% of one-stop connections

Yes. Flexible dates can save you up to 16% on flights from Phoenix Sky Harbor Intl Airport to St. Louis. Saturday is the cheapest departure day at $353 round-trip on average, while Sunday is the most expensive at $416, a difference of $63.

Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

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

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.

Some of the most popular sights in St. Louis are Busch Stadium, Enterprise Center and America's Center Convention Complex. These are among the most viewed places in St. Louis on KAYAK.

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.

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 always check the fare details before booking.

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.