$97 Find Cheap Flights from St. Louis to Pittsburgh - Compare and Save

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

• Earliest: departs at 9:45 am and lands at 11:21 am
• Latest: departs at 9:25 pm and lands at 11:01 pm.

The flight takes about 1h 36m.

Only Economy Class is available on flights from St. Louis to Pittsburgh.

A nonstop flight from St. Louis to Pittsburgh takes 1h 36m, 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 St. Louis to Pittsburgh range from $278 to $434, with an average of $349 over the past 12 months. Anything below $278 counts as a good deal.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $308 round-trip via Nashville Intl (BNA), compared to $349 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. Other aircraft seen on the route include Boeing 737-800 Passenger/BBJ2 (winglets) variants.

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

One-way fares from St. Louis to Pittsburgh are currently lower than usual. Average one-way flight prices are about $117, which is 46% below the typical average for this route.

Pittsburgh Airport (PIT) hosts 5 major car rental companies, with daily rates averaging $78 for economy cars. Top options include:

• Dollar
• Hertz
• Sixt
• Budget
• Alamo

Flights from St. Louis to Pittsburgh usually depart from Lambert-St Louis (STL) and arrive at Pittsburgh (PIT).

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

• Chicago O'Hare Intl (ORD) - 52% of one-stop connections
• Nashville Intl (BNA) - 15% of one-stop connections
• Atlanta Hartsfield-Jackson (ATL) - 11% of one-stop connections
• Chicago Midway (MDW) - 11% of one-stop connections

Yes. Flexible dates can save you up to 37% on flights from St. Louis to Pittsburgh. Saturday is the cheapest departure day at $282 round-trip on average, while Monday is the most expensive at $443, a difference of $161.

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

Only Southwest operates flights between St. Louis and Pittsburgh.

Flying via Nashville Intl (BNA) gives the shortest average 1-stop total travel time at 3h 50m, compared with 4h via Detroit Metropolitan Wayne County (DTW) and 4h 08m via Chicago Midway (MDW).

Pittsburgh is 1 hour ahead of St. Louis (Eastern Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

Some of the most popular sights in Pittsburgh are PNC Ballpark, PPG Paints Arena and David L Lawrence Convention Center. These are among the most viewed places in Pittsburgh on KAYAK.

Among airlines operating St. Louis to Pittsburgh 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

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