$68+ Cheap flights from St. Louis to Pittsburgh (STL - PIT)
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 2/24. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PIT
Feb 26 — Mar 51
1 adult, Economy
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Find cheap flights from St. Louis to Pittsburgh 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 Lambert-St Louis to Pittsburgh are usually found in December or May, booked 64 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday
Cheap flight deals from St. Louis to Pittsburgh
Cheapest flights from St. Louis to PittsburghExplore the most affordable flight options available from St. Louis to Pittsburgh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.
Explore the most affordable flight options available from St. Louis to Pittsburgh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.
This Kiwi.com deal was found by Cheapflights users on 1/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/203:49 pm
STL
- PIT
1 stop6h 36m
Multiple Airlines
Mon 2/239:09 pm
PIT
- STL
2 stops34h 42m
Multiple Airlines
Deal found 1/26![Multiple Airlines logo]()
$177
This American Airlines deal was found by Cheapflights users on 1/25. 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.
Sat 2/216:53 pm
STL
- PIT
1 stop4h 34m
American Airlines
Mon 2/233:32 pm
PIT
- STL
1 stop5h 44m
American Airlines
Deal found 1/25![American Airlines logo]()
$189
This American Airlines deal was found by Cheapflights users on 1/26. 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.
Mon 2/166:57 pm
STL
- PIT
1 stop4h 30m
American Airlines
Wed 2/1812:20 pm
PIT
- STL
1 stop4h 15m
American Airlines
Deal found 1/26![American Airlines logo]()
$213
This Kiwi.com deal was found by Cheapflights users on 1/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/193:49 pm
STL
- PIT
1 stop17h 45m
Frontier
Mon 2/232:19 pm
PIT
- STL
2 stops41h 32m
Frontier
Deal found 1/25![Frontier logo]()
$249
This Southwest deal was found by Cheapflights users on 1/25. 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.
Sat 2/213:55 pm
STL
- PIT
Nonstop1h 35m
Southwest
Mon 2/234:10 pm
PIT
- STL
1 stop7h 30m
Southwest
Deal found 1/25![Southwest logo]()
$251
This American Airlines deal was found by Cheapflights users on 1/26. 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.
Sat 2/216:13 am
STL
- PIT
1 stop6h 28m
American Airlines
Sun 2/227:09 pm
PIT
- STL
1 stop5h 39m
American Airlines
Deal found 1/26![American Airlines logo]()
$255
This Southwest deal was found by Cheapflights users on 1/24. 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.
Thu 3/124:25 pm
STL
- PIT
2 stops6h 15m
Southwest
Mon 3/168:45 pm
PIT
- STL
1 stop4h 20m
Southwest
Deal found 1/24![Southwest logo]()
$266
This Southwest deal was found by Cheapflights users on 1/24. 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.
Sun 4/2610:15 am
STL
- PIT
1 stop3h 50m
Southwest
Tue 4/285:25 pm
PIT
- STL
1 stop5h 55m
Southwest
Deal found 1/24![Southwest logo]()
$275
This American Airlines deal was found by Cheapflights users on 1/25. 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.
Thu 2/267:05 am
STL
- PIT
1 stop7h 57m
American Airlines
Fri 2/279:13 am
PIT
- STL
1 stop5h 30m
American Airlines
Deal found 1/25![American Airlines logo]()
$280
This Southwest deal was found by Cheapflights users on 1/24. 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.
Fri 3/137:40 pm
STL
- PIT
Nonstop1h 35m
Southwest
Mon 3/166:25 pm
PIT
- STL
1 stop6h 20m
Southwest
Deal found 1/24![Southwest logo]()
$281
This Southwest deal was found by Cheapflights users on 1/25. 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.
Thu 2/265:35 am
STL
- PIT
1 stop7h 55m
Southwest
Fri 2/2712:50 pm
PIT
- STL
2 stops7h 30m
Southwest
Deal found 1/25![Southwest logo]()
$285
Find flight deals from St. Louis to Pittsburgh
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Pittsburgh (PIT). 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 January 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $177 (Kiwi.com) |
One-way from | $68 (Kiwi.com) |
Popular in | October |
Cheapest in | December |
Average price | $318 |
Good round-trip deal | $369 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Pittsburgh 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 January 27, 2026.
Use the filters below to find and compare flights from St. Louis to Pittsburgh that are best for you.
Fly from
St. Louis
Fly to
Pittsburgh
Route
Depart
Return
Price
St. LouisPittsburgh
STL - PIT
STLPIT
Lambert-St Louis
Fri 2/20
3:49 pm-11:25 pm
1 stop6h 36m
Pittsburgh
Mon 2/23
9:09 pm-6:51 am
2 stops34h 42m
$177
St. LouisPittsburgh
STL - PIT
STLPIT
Lambert-St Louis
Sat 2/21
6:53 pm-12:27 am
1 stop4h 34m
Pittsburgh
Mon 2/23
3:32 pm-8:16 pm
1 stop5h 44m
$189
St. LouisPittsburgh
STL - PIT
STLPIT
Lambert-St Louis
Wed 3/18
10:12 am-3:32 pm
1 stop4h 20m
Pittsburgh
Thu 3/26
6:30 am-9:46 am
1 stop4h 16m
$213
St. LouisPittsburgh
STL - PIT
STLPIT
Lambert-St Louis
Mon 2/16
6:57 pm-12:27 am
1 stop4h 30m
Pittsburgh
Wed 2/18
12:20 pm-3:35 pm
1 stop4h 15m
$213
St. LouisPittsburgh
STL - PIT
STLPIT
Lambert-St Louis
Thu 4/16
5:40 am-10:00 am
1 stop3h 20m
Pittsburgh
Mon 4/20
6:55 am-7:45 am
Nonstop1h 50m
$251
St. LouisPittsburgh
STL - PIT
STLPIT
Lambert-St Louis
Sat 2/21
3:55 pm-6:30 pm
Nonstop1h 35m
Pittsburgh
Mon 2/23
4:10 pm-10:40 pm
1 stop7h 30m
$251
St. LouisPittsburgh
STL - PIT
STLPIT
Lambert-St Louis
Thu 3/12
4:25 pm-11:40 pm
2 stops6h 15m
Pittsburgh
Mon 3/16
8:45 pm-12:05 am
1 stop4h 20m
$266
St. LouisPittsburgh
STL - PIT
STLPIT
Lambert-St Louis
Sun 4/26
10:15 am-3:05 pm
1 stop3h 50m
Pittsburgh
Tue 4/28
5:25 pm-10:20 pm
1 stop5h 55m
$275
St. LouisPittsburgh
STL - PIT
STLPIT
Lambert-St Louis
Fri 3/13
10:15 am-5:10 pm
1 stop5h 55m
Pittsburgh
Mon 3/16
5:20 am-10:45 am
1 stop6h 25m
$280
St. LouisPittsburgh
STL - PIT
STLPIT
Lambert-St Louis
Thu 2/26
5:35 am-2:30 pm
1 stop7h 55m
Pittsburgh
Fri 2/27
12:50 pm-7:20 pm
2 stops7h 30m
$285
Showing 1-10 of 16 results
Compare providers for flights from St. Louis to Pittsburgh
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Pittsburgh in January.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on St. Louis-Pittsburgh flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Pittsburgh flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Pittsburgh flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-Pittsburgh flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Pittsburgh flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from St. Louis to Pittsburgh
Have a flexible travel schedule? Discover the best time to fly to Pittsburgh from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Pittsburgh
How far ahead should I book a flight from St. Louis to Pittsburgh?
Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Pittsburgh. Price data was last updated on January 23, 2026.
The best time to book flights from St. Louis to Pittsburgh is 64 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from St. Louis to Pittsburgh?
Currently, January is the cheapest month in which you can book a flight from St. Louis to Pittsburgh (average of $191). Flying from St. Louis to Pittsburgh in July is currently the most expensive (average of $328). 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 STL to PIT?
Find hourly flight availability from St. Louis to Pittsburgh. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 27, 2026.
It’s typically best to fly out from St. Louis to Pittsburgh in the afternoon. Doing so could potentially save you 42% on the flight price compared to flying in the evening, which is usually more expensive.
Reviews of airlines servicing Pittsburgh
Get insights into the airlines that provide service to Pittsburgh. 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 Pittsburgh. Reviews last updated January 27, 2026.
Read through reviews of airlines operating flights from St. Louis to Pittsburgh, such as Southwest, Delta, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Pittsburgh. 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 locationsMars
Steubenville
Washington
Monroeville
Wexford
Belle Vernon
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Alternative routes for St. Louis to Pittsburgh
See prices for flight routes from nearby airports that may be better suited for you.
Top 3 airlines flying from St. Louis to Pittsburgh
Discover the top 3 airlines that operate flights from St. Louis to Pittsburgh. 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 January 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$208 | Average$354 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$241 | Average$368 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$252 | Average$348 | FlexibilityNo cancel fee | On-timeN/A |