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St. Louis

$69+ 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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
PIT — STL
dic. 5 — dic. 121
vie. 12/5
vie. 12/12
1 adult, Economy
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Cheapflights Tip: The best prices from Pittsburgh to Lambert-St Louis are usually found in April or May, booked 29 days in advance, depart on a Thursday or Wednesday and return on a Wednesday

Find flight deals from Pittsburgh to St. Louis

Cheapest flights from Pittsburgh to St. Louis
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 noviembre 5, 2025.

This American Airlines deal was found by Cheapflights users on 11/3. 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.
mié. 12/310:10 amPIT - STL
1 stop7h 49mAmerican Airlines
dom. 12/75:02 amSTL - PIT
1 stop5h 30mAmerican Airlines
Deal found 11/3$214
This American Airlines deal was found by Cheapflights users on 11/3. 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.
jue. 12/48:35 amPIT - STL
1 stop5h 43mAmerican Airlines
dom. 12/75:02 amSTL - PIT
1 stop6h 57mAmerican Airlines
Deal found 11/3$224
This American Airlines deal was found by Cheapflights users on 11/5. 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.
jue. 11/2010:22 amPIT - STL
1 stop4h 19mAmerican Airlines
lun. 11/242:05 pmSTL - PIT
1 stop4h 48mAmerican Airlines
Deal found 11/5$229
This Kiwi.com deal was found by Cheapflights users on 11/5. 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.
sáb. 11/226:40 pmPIT - STL
1 stop16h 23mMultiple Airlines
dom. 11/234:13 pmSTL - PIT
1 stop15h 06mMultiple Airlines
Deal found 11/5$231
This Kiwi.com deal was found by Cheapflights users on 11/3. 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.
mié. 12/310:42 pmPIT - STL
2 stops13h 25mMultiple Airlines
dom. 12/72:47 pmSTL - PIT
1 stop18h 11mMultiple Airlines
Deal found 11/3$241
This Delta deal was found by Cheapflights users on 11/4. 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.
mar. 12/166:00 amPIT - STL
1 stop5h 45mDelta
vie. 12/196:39 amSTL - PIT
1 stop3h 33mDelta
Deal found 11/4$263
This American Airlines deal was found by Cheapflights users on 11/4. 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.
jue. 11/1310:22 amPIT - STL
1 stop7h 14mAmerican Airlines
mié. 11/191:43 pmSTL - PIT
1 stop4h 33mAmerican Airlines
Deal found 11/4$269
This Southwest deal was found by Cheapflights users on 11/3. 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.
mié. 12/36:00 amPIT - STL
1 stop6h 25mSouthwest
dom. 12/78:00 amSTL - PIT
Nonstop1h 40mSouthwest
Deal found 11/3$270
This Kiwi.com deal was found by Cheapflights users on 11/5. 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.
sáb. 11/226:40 pmPIT - STL
1 stop16h 23mMultiple Airlines
lun. 11/244:13 pmSTL - PIT
2 stops14h 08mMultiple Airlines
Deal found 11/5$273

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 noviembre 5, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$169
(American Airlines)

One-way from

$69
(Southwest)

Popular in

January

Cheapest in

April

Average price

$335

Good round-trip deal

$325 or less

Good one-way deal

$259 or less
Provider with most accurate pricing for Pittsburgh-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Pittsburgh-Lambert-St Louis flights.
Search Deals
From Pittsburgh to Lambert-St Louis
Search Deals
One-way flight from Pittsburgh to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($15 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from Pittsburgh to Lambert-St Louis.
Search Deals
Price to beat on a one-way flight from Pittsburgh to Lambert-St Louis.
Search 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 noviembre 5, 2025.
Use the filters below to find and compare flights from Pittsburgh to St. Louis that are best for you.

Fly from

Pittsburgh

Fly to

St. Louis

Route

Depart

Return

Price

PittsburghSt. Louis

PIT - STL

PITSTL

Pittsburgh

sáb. 1/24

6:00 am-11:36 am

1 stop6h 36m

Lambert-St Louis

mar. 1/27

11:05 am-3:52 pm

1 stop3h 47m

$169

PittsburghSt. Louis

PIT - STL

PITSTL

Pittsburgh

sáb. 1/24

6:25 am-1:50 pm

2 stops8h 25m

Lambert-St Louis

mar. 1/27

8:15 am-12:55 pm

1 stop3h 40m

$218

PittsburghSt. Louis

PIT - STL

PITSTL

Pittsburgh

vie. 1/16

6:25 am-10:21 am

1 stop4h 56m

Lambert-St Louis

vie. 1/16

5:59 pm-11:10 pm

1 stop4h 11m

$229

PittsburghSt. Louis

PIT - STL

PITSTL

Pittsburgh

sáb. 11/22

6:40 pm-10:03 am

1 stop16h 23m

Lambert-St Louis

dom. 11/23

4:13 pm-8:19 am

1 stop15h 06m

$231

PittsburghSt. Louis

PIT - STL

PITSTL

Pittsburgh

mié. 12/3

10:42 pm-11:07 am

2 stops13h 25m

Lambert-St Louis

dom. 12/7

2:47 pm-9:58 am

1 stop18h 11m

$241

PittsburghSt. Louis

PIT - STL

PITSTL

Pittsburgh

sáb. 11/22

6:40 pm-10:03 am

1 stop16h 23m

Lambert-St Louis

lun. 11/24

4:13 pm-7:21 am

2 stops14h 08m

$273

PittsburghSt. Louis

PIT - STL

PITSTL

Pittsburgh

jue. 12/4

9:30 am-6:36 pm

2 stops10h 06m

Lambert-St Louis

dom. 12/7

2:47 pm-9:58 am

1 stop18h 11m

$286

PittsburghSt. Louis

PIT - STL

PITSTL

Pittsburgh

mié. 3/4

12:35 pm-7:05 pm

1 stop7h 30m

Lambert-St Louis

mié. 3/11

10:15 am-12:50 pm

Nonstop1h 35m

$289

PittsburghSt. Louis

PIT - STL

PITSTL

Pittsburgh

jue. 12/4

6:40 am-10:40 am

1 stop5h 00m

Lambert-St Louis

dom. 12/7

8:00 am-10:40 am

Nonstop1h 40m

$289

PittsburghSt. Louis

PIT - STL

PITSTL

Pittsburgh

mié. 1/14

12:15 pm-3:00 pm

1 stop3h 45m

$69

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Showing 1-10 of 20 results
1
2

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 November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Pittsburgh-St. Louis flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Pittsburgh-St. Louis flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.
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?

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 October 31, 2025.

Booking 29 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, December is the cheapest month in which you can book a flight from Pittsburgh to St. Louis (average of $168). Flying from Pittsburgh to St. Louis in February is currently the most expensive (average of $274). 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 noviembre 5, 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 18% on your trip compared to booking a flight in the evening.

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 noviembre 5, 2025.
Read reviews from past customers who have flown Southwest, Delta, and United 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.
Southwest
8.0
Very good
4,240 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,240 reviews
Southwest
8.0
Very good
4,240 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
7.9
Good
8,004 reviews
Southwest
8.0
Very good
4,240 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
9,002 reviews
Southwest
8.0
Very good
4,240 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
11,042 reviews
Southwest
8.0
Very good
4,240 reviews

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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.

  • How popular is this Pittsburgh to St. Louis flight route?

    This flight path from Pittsburgh to Lambert-St Louis was viewed by 6 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Pittsburgh to St. Louis?

    American Airlines and Southwest can get you from Pittsburgh to St. Louis in just under 6h 36m. Your travel time can differ by up to 1h 49m. Airlines will cover a distance of 552 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Pittsburgh to St. Louis round-trip?

    American Airlines, at $171, was found to be the cheapest airline from Pittsburgh to St. Louis.Alternate airlines to your destination round-trip include Southwest and Delta. Users have found that American Airlines is 49% cheaper than the other options available to this destination.

  • What are the cheapest flights from Pittsburgh to St. Louis?

    The cheapest flight price from Pittsburgh to St. Louis is $182. On average you can expect to pay $382. The most popular route, (Pittsburgh - Lambert-St Louis), can usually be booked for $175.

  • Can I find deals for flights from Pittsburgh to St. Louis that include hotel bookings?

    Yes. In addition to deals on Pittsburgh to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Pittsburgh to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Pittsburgh to St. Louis.

  • Can I find deals for business class flights from Pittsburgh to St. Louis?

    Yes. Cheapflights offers flight deals from Pittsburgh to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Pittsburgh to St. Louis?

    Currently, December is the cheapest month in which you can book a flight from Pittsburgh to St. Louis (average of $168). Flying from Pittsburgh to St. Louis in February is currently the most expensive (average of $274). 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.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

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Alternative routes for Pittsburgh to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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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 2,558,603 searches. Data last updated noviembre 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$171Average$338FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$241Average$348FlexibilityNo cancel feeOn-time63%
DeltaCheapest$258Average$304FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$258Average$408FlexibilityNo cancel feeOn-time69%

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