There are most likely no direct flights on the Pittsburgh — Saint Louis route
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We carefully collect statistics on the search and pricing of airlines and, based on these data, we make an assumption about future prices. Thus, you can better understand which season is the cheapest to fly from Pittsburgh to Saint Louis
A non-stop flight is the most convenient and comfortable way to fly from Pittsburgh to Saint Louis, despite the fact that sometimes flights with transfers can cost significantly less.
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There are most likely no direct flights on the Pittsburgh — Saint Louis route
All airports
Pittsburgh — Saint Louis
12/14/2026
Departure
Direct flight
WN1111
starting at $173
starting at $117
You can fly from Pittsburgh to Saint Louis with Southwest Airlines. It is the only carrier on this route, which makes the choice straightforward. Despite the lack of competition, ticket prices remain affordable: fares start from $117. Our service helps you track price changes, compare by dates, and select the most suitable flight. If you value stability and predictability, flying with Southwest Airlines is a convenient solution. We make it easy to find good deals and ensure a comfortable booking process.
The cheapest flight ticket from Pittsburgh to Saint Louis according to data for the last 48 hours costs $117
Often the best time to buy tickets from Pittsburgh to Saint Louis is 2 months before departure.
Based on statistics over the past years, the lowest prices for flights from Pittsburgh to Saint Louis can be found flying in these months: September.
The fastest flights from Pittsburgh to Saint Louis start from 1 hour 55 minutes in the air.
The following airlines operate direct flights on the route Pittsburgh — Saint Louis: Southwest Airlines
The cheapest one-way flight from Pittsburgh to Saint Louis departs on 12/14/2026, is operated by Southwest Airlines and costs $117
There is no information about the cheapest roundtrip flight from Pittsburgh to Saint Louis
Fastest flight from Pittsburgh to Saint Louis takes 1h 55m
There are direct flights on this route 1 day a week: Mo
The distance between Pittsburgh and Saint Louis is 897km (556 miles). There are 15 direct flights from Pittsburgh to Saint Louis. The time difference between Pittsburgh and Saint Louis is 1h. Flights from Pittsburgh begin at 6:40 AM. The latest flight from Pittsburgh departs at 7:20 PM
We couldn't find any special offers for flights from Pittsburgh to Saint Louis