$101+ 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 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
PIT — STL
Oct 2 — Oct 91
Round-trip
1 adult, Economy
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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 November or August, booked 29 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday
Cheap flight deals from Pittsburgh to St. Louis
Cheapest
Best
Last-minute
One-way
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 September 2, 2026.
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 September 2, 2026.
This Southwest deal was found by Cheapflights users on 8/31. 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.
Mon 9/217:20 pm -
Nonstop1h 40m
Wed 9/236:50 pm -
Nonstop1h 40m
Deal found 8/31![Southwest logo]()
$207
This Southwest deal was found by Cheapflights users on 8/28. 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.
Tue 9/226:40 am -
Nonstop1h 40m
Thu 9/2410:10 am -
2 stops5h 55m
Deal found 8/28![Southwest logo]()
$222
This American Airlines deal was found by Cheapflights users on 8/28. 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.
Wed 10/283:47 pm -
1 stop6h 59m
Sat 10/317:29 am -
1 stop6h 38m
Deal found 8/28![American Airlines logo]()
$227
This Southwest deal was found by Cheapflights users on 8/31. 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 10/46:45 am -
Nonstop1h 55m
Wed 10/78:30 am -
2 stops7h 15m
Deal found 8/31![Southwest logo]()
$242
This American Airlines deal was found by Cheapflights users on 8/28. 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.
Wed 9/2310:16 am -
1 stop4h 00m
Fri 9/255:45 pm -
1 stop4h 51m
Deal found 8/28![American Airlines logo]()
$247
This CheapOair deal was found by Cheapflights users on 8/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/172:32 pm -
1 stop27h 02m
Mon 9/215:19 pm -
1 stop19h 28m
Deal found 8/28![Frontier logo]()
$250
This Southwest deal was found by Cheapflights users on 8/28. 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.
Wed 9/236:40 am -
Nonstop1h 40m
Fri 9/257:35 pm -
Nonstop1h 45m
Deal found 8/28![Southwest logo]()
$252
This Southwest deal was found by Cheapflights users on 8/30. 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 9/276:55 am -
Nonstop1h 45m
Sun 10/44:35 pm -
1 stop5h 50m
Deal found 8/30![Southwest logo]()
$257
This Southwest deal was found by Cheapflights users on 8/31. 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 10/156:50 am -
Nonstop1h 55m
Sun 10/185:55 am -
1 stop4h 00m
Deal found 8/31![Southwest logo]()
$260
Best flights from Pittsburgh to St. LouisDiscover carefully curated flight deals from Pittsburgh to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 2, 2026.
Discover carefully curated flight deals from Pittsburgh to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 2, 2026.
This Southwest deal was found by Cheapflights users on 8/31. 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.
Mon 9/217:20 pm -
Nonstop1h 40m
Wed 9/231:40 pm -
1 stop6h 15m
Deal found 8/31![Southwest logo]()
$217
This Delta deal was found by Cheapflights users on 8/29. 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.
Sat 9/2611:45 am -
1 stop4h 04m
Sat 10/36:40 am -
1 stop3h 39m
Deal found 8/29![Delta logo]()
$227
This United Airlines deal was found by Cheapflights users on 8/27. 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.
Thu 10/292:02 pm -
1 stop5h 07m
Fri 10/306:50 pm -
1 stop20h 47m
Deal found 8/27![United Airlines logo]()
$362
This Southwest deal was found by Cheapflights users on 9/1. 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 11/58:15 pm -
Nonstop1h 45m
Mon 11/94:40 pm -
2 stops6h 15m
Deal found 9/1![Southwest logo]()
$222
This Southwest deal was found by Cheapflights users on 8/28. 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.
Wed 9/236:40 am -
Nonstop1h 40m
Fri 9/257:35 pm -
Nonstop1h 45m
Deal found 8/28![Southwest logo]()
$252
This Southwest deal was found by Cheapflights users on 8/31. 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.
Wed 10/76:30 am -
1 stop4h 50m
Fri 10/97:55 pm -
Nonstop1h 40m
Deal found 8/31![Southwest logo]()
$262
This Southwest deal was found by Cheapflights users on 8/29. 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 9/266:10 am -
2 stops7h 25m
Sat 10/36:00 am -
1 stop5h 05m
Deal found 8/29![Southwest logo]()
$277
This Southwest deal was found by Cheapflights users on 8/29. 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 11/196:30 pm -
Nonstop1h 55m
Tue 12/16:15 pm -
Nonstop1h 35m
Deal found 8/29![Southwest logo]()
$295
This Southwest deal was found by Cheapflights users on 8/29. 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.
Tue 11/246:45 am -
Nonstop1h 55m
Sun 11/298:50 pm -
Nonstop1h 35m
Deal found 8/29![Southwest logo]()
$333
This Southwest deal was found by Cheapflights users on 8/30. 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 9/175:35 am -
2 stops10h 35m
Mon 9/214:15 pm -
1 stop4h 40m
Deal found 8/30![Southwest logo]()
$368
Last-minute flights from Pittsburgh to St. LouisDiscover last-minute flight deals from Pittsburgh to St. Louis. Data last updated September 2, 2026 and is based on user searches.
Discover last-minute flight deals from Pittsburgh to St. Louis. Data last updated September 2, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 8/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/172:32 pm -
1 stop27h 02m
Mon 9/215:19 pm -
1 stop19h 28m
Deal found 8/28![Frontier logo]()
$250
This Southwest deal was found by Cheapflights users on 8/31. 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.
Mon 9/217:20 pm -
Nonstop1h 40m
Wed 9/236:50 pm -
Nonstop1h 40m
Deal found 8/31![Southwest logo]()
$207
This Southwest deal was found by Cheapflights users on 8/28. 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.
Tue 9/226:40 am -
Nonstop1h 40m
Thu 9/2410:10 am -
2 stops5h 55m
Deal found 8/28![Southwest logo]()
$222
This American Airlines deal was found by Cheapflights users on 8/28. 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.
Wed 9/2310:16 am -
1 stop4h 00m
Fri 9/255:45 pm -
1 stop4h 51m
Deal found 8/28![American Airlines logo]()
$247
This Southwest deal was found by Cheapflights users on 8/28. 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.
Wed 9/236:40 am -
Nonstop1h 40m
Fri 9/257:35 pm -
Nonstop1h 45m
Deal found 8/28![Southwest logo]()
$252
This Southwest deal was found by Cheapflights users on 8/30. 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 9/276:55 am -
Nonstop1h 45m
Sun 10/44:35 pm -
1 stop5h 50m
Deal found 8/30![Southwest logo]()
$257
This Southwest deal was found by Cheapflights users on 8/31. 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 10/46:45 am -
Nonstop1h 55m
Wed 10/78:30 am -
2 stops7h 15m
Deal found 8/31![Southwest logo]()
$242
This Southwest deal was found by Cheapflights users on 8/31. 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 10/156:50 am -
Nonstop1h 55m
Sun 10/188:00 pm -
Nonstop1h 40m
Deal found 8/31![Southwest logo]()
$260
This American Airlines deal was found by Cheapflights users on 8/28. 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.
Wed 10/283:47 pm -
1 stop6h 59m
Sat 10/317:29 am -
1 stop6h 38m
Deal found 8/28![American Airlines logo]()
$227
One-way flights from Pittsburgh to St. LouisSearch for one-way flight options from Pittsburgh to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 2, 2026.
Search for one-way flight options from Pittsburgh to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 2, 2026.
This CheapOair deal was found by Cheapflights users on 8/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/232:42 pm -
1 stop28h 12m
Deal found 8/29![Frontier logo]()
$101
This Southwest deal was found by Cheapflights users on 9/1. 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.
Wed 9/237:20 pm -
Nonstop1h 40m
Deal found 9/1![Southwest logo]()
$104
This CheapOair deal was found by Cheapflights users on 9/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/242:32 pm -
1 stop27h 02m
Deal found 9/1![Frontier logo]()
$112
This Delta deal was found by Cheapflights users on 8/31. 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.
Tue 9/2911:16 am -
1 stop5h 38m
Deal found 8/31![Delta logo]()
$114
This Southwest deal was found by Cheapflights users on 8/30. 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.
Tue 9/298:40 am -
2 stops8h 45m
Deal found 8/30![Southwest logo]()
$119
This Southwest deal was found by Cheapflights users on 8/31. 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 10/166:50 am -
Nonstop1h 55m
Deal found 8/31![Southwest logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 8/29. 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 10/14:37 pm -
2 stops21h 33m
Deal found 8/29![Multiple Airlines logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 8/31. 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.
Mon 10/128:54 pm -
3 stops45h 46m
Deal found 8/31![Multiple Airlines logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 8/29. 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.
Tue 9/2910:17 am -
3 stops27h 53m
Deal found 8/29![Multiple Airlines logo]()
$129
Find 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 September 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $207 (Southwest) |
One-way from | $101 (CheapOair) |
Popular in | June |
Cheapest in | November |
Average price | $321 |
Good round-trip deal | $340 or less |
Good one-way deal | $168 or less |
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 7,457,451 searches. Data last updated September 2, 2026.
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
Cheapest round-trip
PittsburghSt. Louis
PIT Pittsburgh - STL Lambert-St Louis
PITSTL
Pittsburgh
Mon 9/21
7:20 pm-8:00 pm
Nonstop1h 40m
Lambert-St Louis
Wed 9/23
1:40 pm-8:55 pm
1 stop6h 15m
$217
PittsburghSt. Louis
PIT Pittsburgh - STL Lambert-St Louis
PITSTL
Pittsburgh
Thu 11/5
8:15 pm-9:00 pm
Nonstop1h 45m
Lambert-St Louis
Mon 11/9
4:40 pm-11:55 pm
2 stops6h 15m
$222
PittsburghSt. Louis
PIT Pittsburgh - STL Lambert-St Louis
PITSTL
Pittsburgh
Sat 9/26
11:45 am-2:49 pm
1 stop4h 04m
Lambert-St Louis
Sat 10/3
6:40 am-11:19 am
1 stop3h 39m
$227
Quickest round-trip
PittsburghSt. Louis
PIT Pittsburgh - STL Lambert-St Louis
PITSTL
Pittsburgh
Wed 9/23
6:40 am-7:20 am
Nonstop1h 40m
Lambert-St Louis
Fri 9/25
7:35 pm-10:20 pm
Nonstop1h 45m
$252
PittsburghSt. Louis
PIT Pittsburgh - STL Lambert-St Louis
PITSTL
Pittsburgh
Wed 10/7
6:30 am-10:20 am
1 stop4h 50m
Lambert-St Louis
Fri 10/9
7:55 pm-10:35 pm
Nonstop1h 40m
$262
PittsburghSt. Louis
PIT Pittsburgh - STL Lambert-St Louis
PITSTL
Pittsburgh
Sat 9/26
6:10 am-12:35 pm
2 stops7h 25m
Lambert-St Louis
Sat 10/3
6:00 am-12:05 pm
1 stop5h 05m
$277
PittsburghSt. Louis
PIT Pittsburgh - STL Lambert-St Louis
PITSTL
Pittsburgh
Thu 11/19
6:30 pm-7:25 pm
Nonstop1h 55m
Lambert-St Louis
Tue 12/1
6:15 pm-8:50 pm
Nonstop1h 35m
$295
PittsburghSt. Louis
PIT Pittsburgh - STL Lambert-St Louis
PITSTL
Pittsburgh
Tue 11/24
6:45 am-7:40 am
Nonstop1h 55m
Lambert-St Louis
Sun 11/29
8:50 pm-11:25 pm
Nonstop1h 35m
$333
PittsburghSt. Louis
PIT Pittsburgh - STL Lambert-St Louis
PITSTL
Pittsburgh
Thu 10/29
2:02 pm-6:09 pm
1 stop5h 07m
Lambert-St Louis
Fri 10/30
6:50 pm-4:37 pm
1 stop20h 47m
$362
PittsburghSt. Louis
PIT Pittsburgh - STL Lambert-St Louis
PITSTL
Pittsburgh
Thu 9/17
5:35 am-3:10 pm
2 stops10h 35m
Lambert-St Louis
Mon 9/21
4:15 pm-9:55 pm
1 stop4h 40m
$368
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Pittsburgh to St. Louis
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 Pittsburgh to St. Louis in September.
| 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 Pittsburgh-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Pittsburgh-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Pittsburgh-St. Louis flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Pittsburgh-St. Louis 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 Pittsburgh-St. Louis 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 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.
PIT-STL
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 Pittsburgh to St. Louis
How far ahead should I book a flight from Pittsburgh to St. Louis?
Booking 28 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, November is the cheapest month in which you can book a flight from Pittsburgh to St. Louis (average of $286). Flying from Pittsburgh to St. Louis in June is currently the most expensive (average of $471). 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 September 2, 2026.
A simple way to save on the total cost of your ticket is to fly from Pittsburgh to St. Louis in the afternoon. If you’re flexible enough to do this you can expect to save up to 14% on your trip compared to booking a flight in the morning.
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 September 2, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Pittsburgh to St. Louis. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
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 St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsEdwardsville
Fairview Heights
O'Fallon
Fenton
Swansea
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
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Find flights from Pittsburgh to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Pittsburgh and St. Louis flights
Browse other Pittsburgh and St. Louis flight options. Last updated on September 2, 2026.
Other flights from Pittsburgh
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Other flights to St. Louis
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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 7,457,451 searches. Data last updated September 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$158 | Average$351 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$188 | Average$388 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$227 | Average$358 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$279 | Average$440 | FlexibilityNo cancel fee | On-time69% |