$88+ Cheap flights from Pittsburgh to St. Louis (PIT - STL)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/24. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Pittsburgh to St. Louis with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Pittsburgh to Lambert-St Louis are usually found in April or May, booked 44 days in advance, depart on a Wednesday or Thursday and return on a Wednesday
Cheap flight deals from Pittsburgh to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from Pittsburgh (PIT) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 12, 2025.
Round-trip from | $183 (American Airlines) |
|---|---|
One-way from | $88 (Mytrip) |
Popular in | January |
Cheapest in | April |
Average price | $305 |
Good round-trip deal | $303 or less |
Good one-way deal | $184 or less |
Find flight deals from Pittsburgh to St. Louis
Cheapest flights from Pittsburgh to St. LouisExplore the most affordable flight options available from Pittsburgh to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.
Explore the most affordable flight options available from Pittsburgh to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.
This American Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This FlightHub deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Cheapflights Fare Finder
Customize your flight search to find flights from Pittsburgh to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from Pittsburgh to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
PittsburghSt. Louis
PIT - STL
PITSTL
Pittsburgh
Tue 10/28
9:00 am-4:22 pm
1 stop8h 22m
Lambert-St Louis
Tue 11/4
11:20 am-9:08 pm
1 stop8h 48m
PittsburghSt. Louis
PIT - STL
PITSTL
Pittsburgh
Wed 8/27
1:05 pm-1:50 pm
Nonstop1h 45m
Lambert-St Louis
Tue 9/9
2:30 pm-5:05 pm
Nonstop1h 35m
PittsburghSt. Louis
PIT - STL
PITSTL
Pittsburgh
Sat 7/12
1:21 pm-9:52 am
2 stops21h 31m
Lambert-St Louis
Thu 7/17
10:47 am-11:29 pm
2 stops11h 42m
PittsburghSt. Louis
PIT - STL
PITSTL
Pittsburgh
Tue 10/21
6:00 am-12:25 pm
1 stop7h 25m
Lambert-St Louis
Thu 10/23
6:45 am-11:10 am
1 stop3h 25m
PittsburghSt. Louis
PIT - STL
PITSTL
Pittsburgh
Wed 7/23
12:30 pm-9:52 am
3 stops22h 22m
Lambert-St Louis
Sat 7/26
3:34 pm-10:44 pm
2 stops30h 10m
PittsburghSt. Louis
PIT - STL
PITSTL
Pittsburgh
Thu 10/23
11:04 am-2:27 pm
1 stop4h 23m
Lambert-St Louis
Wed 10/29
6:45 am-1:15 pm
1 stop5h 30m
PittsburghSt. Louis
PIT - STL
PITSTL
Pittsburgh
Fri 10/24
5:28 pm-9:07 am
1 stop16h 39m
Lambert-St Louis
Sun 10/26
7:52 pm-4:33 pm
1 stop19h 41m
PittsburghSt. Louis
PIT - STL
PITSTL
Pittsburgh
Thu 7/24
6:30 am-9:52 am
2 stops28h 22m
PittsburghSt. Louis
PIT - STL
PITSTL
Pittsburgh
Wed 8/6
10:00 am-6:23 pm
1 stop9h 23m
PittsburghSt. Louis
PIT - STL
PITSTL
Pittsburgh
Thu 9/18
4:00 pm-4:45 pm
Nonstop1h 45m
Best time to book a flight from Pittsburgh to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Pittsburgh with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Pittsburgh to St. Louis
How far ahead should I book a flight from Pittsburgh to St. Louis?
Use this chart to determine the optimal time to book a round-trip flight from Pittsburgh to St. Louis. Price data was last updated on June 9, 2025.
Booking 44 days in advance of your planned departure date is, on average, the best time to get cheap flights from Pittsburgh to St. Louis. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Pittsburgh to St. Louis?
Currently, August is the cheapest month in which you can book a flight from Pittsburgh to St. Louis (average of $311). Flying from Pittsburgh to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from PIT to STL?
Find hourly flight availability from Pittsburgh to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.
A simple way to save on the total cost of your ticket is to fly from Pittsburgh to St. Louis at noon. If you’re flexible enough to do this you can expect to save up to 16% on your trip compared to booking a flight in the morning.
What is the cheapest day to fly from Pittsburgh to St. Louis?
Use this chart to determine the cheapest time to fly round-trip from Pittsburgh to St. Louis. Price data was last updated on June 8, 2025.
Travelers seeking maximum savings on their Pittsburgh to St. Louis flight should consider departing on Wednesday evenings when fares are most often at their lowest. Wednesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Rainfall in St. Louis by month
Plan your trip to St. Louis by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.
Temperature in St. Louis by month
Plan your trip to St. Louis by taking into account the average temperature totals by month.
If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).
Reviews of airlines servicing St. Louis
Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated June 12, 2025.
Read through reviews of airlines operating flights from Pittsburgh to St. Louis, such as Southwest, Delta and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
Entertainment
Comfort
Food
Boarding
Crew
Reviews
John,May 2025
PVD - BNA
Overall
Entertainment
Comfort
Food
Boarding
Crew
Reviews
John,May 2025
PVD - BNA
Overall
Entertainment
Comfort
Food
Boarding
Crew
Reviews
John,May 2025
PVD - BNA
Overall
Entertainment
Comfort
Food
Boarding
Crew
Reviews
John,May 2025
PVD - BNA
Overall
Entertainment
Comfort
Food
Boarding
Crew
Reviews
John,May 2025
PVD - BNA
Overall
Entertainment
Comfort
Food
Boarding
Crew
Reviews
John,May 2025
PVD - BNA
Related info for your journey
Find useful and relevant information for your journey from Pittsburgh to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Pittsburgh?
Book flights to Pittsburgh if you plan to visit one of these locationsBrowse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes for Pittsburgh to St. Louis
See prices for flight routes from nearby airports that may be better suited for you.
Top 4 airlines flying from Pittsburgh to St. Louis
Discover the top 4 airlines that operate flights from Pittsburgh to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$166 | Average$348 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$247 | Average$342 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$258 | Average$337 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$258 | Average$408 | FlexibilityNo cancel fee | On-time69% |