$90 Find Cheap Flights from Pittsburgh to St. Louis - Compare and Save

These are the earliest and latest flight times available from Pittsburgh to St. Louis:

• Earliest: departs at 5:55 am and lands at 7:49 am
• Latest: departs at 9:20 pm and lands at 11:14 pm.

The flight takes about 1h 54m.

Three cabin classes are available on flights from Pittsburgh to St. Louis:

• Economy Class
• Business Class
• First Class

A nonstop flight from Pittsburgh to St. Louis takes 1h 54m, covering 552 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 Pittsburgh to St. Louis range from $276 to $472, with an average of $359 over the past 12 months. Anything below $276 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 85% above the $359 route average. Book 13 weeks before departure for the lowest fares.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $116 round-trip via Nashville Intl (BNA), compared to $342 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $45–$90 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 United Airlines. Other aircraft seen on the route include Boeing 737-800 variants.

Morning is the busiest departure period on Pittsburgh to St. Louis flights, with 50% of flights leaving in that window. Evening departures account for 50%, afternoon flights for 0%, and night flights for 0%.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $206 to $983. That means the highest observed fare was about 5x higher than the lowest one.

JetBlue is the only airline on the Pittsburgh to St. Louis route offering in-flight Wi-Fi. Pricing depends on fare class.

One-way fares from Pittsburgh to St. Louis are currently lower than usual. Average one-way flight prices are about $114, which is 46% 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 Pittsburgh to St. Louis usually depart from Pittsburgh (PIT) and arrive at Lambert-St Louis (STL).

One-stop flights from Pittsburgh to St. Louis most commonly connect through:

• Chicago O'Hare Intl (ORD) - 63% of one-stop connections
• Detroit Metropolitan Wayne County (DTW) - 10% of one-stop connections
• Chicago Midway (MDW) - 8% of one-stop connections
• Philadelphia (PHL) - 5% of one-stop connections

Yes. Flexible dates can save you up to 38% on flights from Pittsburgh to St. Louis. Wednesday is the cheapest departure day at $306 round-trip on average, while Sunday is the most expensive at $488, a difference of $182.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Only Southwest operates flights between Pittsburgh and St. Louis.

Flying via Chicago Midway (MDW) gives the shortest average 1-stop total travel time at 3h 56m, compared with 4h via Detroit Metropolitan Wayne County (DTW) and 4h 11m via Nashville Intl (BNA).

St. Louis is 1 hour behind Pittsburgh (Central Time vs Eastern 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 Pittsburgh to St. Louis flights:

• Southwest: 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:

• Southwest: a cabin bag and a checked bag in Economy 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.