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

Currently priced at $242, Delta will fly you from St. Louis to Pittsburgh and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Southwest and United Airlines - these airlines can fly you to your destination from $256 and $450, respectively. These flights start at 32% lower than the current average price 3 months from now.

What are the cheapest airlines to fly from St. Louis to Pittsburgh one-way?

The cheapest airline one-way is Spirit Airlines, with whom users have recently found tickets for as low as $101. However, be on the lookout for offers from United Airlines and Frontier, as they are both options that can get you from St. Louis to Pittsburgh for a low price.

What is the cheapest day to fly from St. Louis to Pittsburgh?

Travelers seeking maximum savings on their St. Louis to Pittsburgh flight should consider departing on Saturday mornings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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

The cheapest flight price from St. Louis to Pittsburgh is $253. On average you can expect to pay $370. The most popular route, (Lambert-St Louis - Pittsburgh), can usually be booked for $240.

What are the most popular airlines that fly from St. Louis to Pittsburgh?

When booking a flight from St. Louis to Pittsburgh, you may want to consider flying on American Airlines, Delta or United Airlines as they are the most popular for this route.

What is the cheapest day to fly round-trip from St. Louis to Pittsburgh?

Friday flights are found to be more expensive to fly from St. Louis to Pittsburgh. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Pittsburgh.

How far in advance should I book a flight from St. Louis to Pittsburgh?

Travelers have found it’s best to book a flight 28 days in advance to save up to 51% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 28 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from St. Louis to Pittsburgh 1-2 weeks in advance for as low as $254, or $268 for flights within the next 24 hours.

What is the cheapest month to fly from St. Louis to Pittsburgh?

Due to multiple factors, expect to potentially pay more when booking in November. For low rates, August can be a great choice for travel to Pittsburgh. Flights to Pittsburgh from St. Louis in August are about $356 on average during August, but can be found for as low as $162.

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.

What airports do I use to fly from St. Louis to Pittsburgh?

If you wish to fly to Pittsburgh from St. Louis, then you need to book flights from Lambert-St Louis to Pittsburgh. There is 1 flight from Lambert-St Louis (STL) to Pittsburgh (PIT) per day to choose from. Flights to Pittsburgh from Lambert-St Louis are available from 4 different airlines, which means you should have some options if you want to compare airfare deals. 1h 35m is how long a nonstop flight from St. Louis to Pittsburgh typically takes.

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

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

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

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

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

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

$98+ Flights from St. Louis to Pittsburgh

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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.

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Cheapflights Tip: The best prices from Lambert-St Louis to Pittsburgh are usually found in August or April, booked 27 days in advance, depart on a Tuesday or Wednesday and return on a Thursday

Cheap flight deals from St. Louis to Pittsburgh

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$242 (Delta)
One-way from	$101 (Mytrip)
Popular in	November
Cheapest in	August
Average price	$321
Good round-trip deal	$340 or less

Provider with most accurate pricing for Lambert-St Louis-Pittsburgh flight deals.

Search Deals

Provider most trusted by Cheapflights users for Lambert-St Louis-Pittsburgh flights.

Search Deals

From Lambert-St Louis to Pittsburgh

Search Deals

One-way flight from Lambert-St Louis to Pittsburgh

Search Deals

Highest demand for flights based on searches. 5% potential increase in price ($20 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).

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Average for round-trip flights in April 2025

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Price to beat on a round-trip flight from Lambert-St Louis to Pittsburgh.

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Find flight deals from St. Louis to Pittsburgh

Cheapest flights from St. Louis to Pittsburgh
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 April 3, 2025.

Thu 4/245:41 pmSTL - PIT

1 stop25h 29mFrontier

Mon 4/289:00 pmPIT - STL

1 stop28h 04mFrontier

Deal found 4/1

$189

Wed 4/3010:42 amSTL - PIT

1 stop3h 48mDelta

Sun 5/45:50 amPIT - STL

1 stop6h 55mDelta

Deal found 4/2

$242

Sat 6/74:17 pmSTL - PIT

1 stop6h 34mAmerican Airlines

Tue 6/1010:06 amPIT - STL

1 stop4h 31mAmerican Airlines

Deal found 4/1

$247

Sat 6/79:55 amSTL - PIT

Nonstop1h 35mSouthwest

Tue 6/101:25 pmPIT - STL

Nonstop1h 45mSouthwest

Deal found 4/1

$253

Tue 4/89:50 amSTL - PIT

3 stops33h 22mMultiple Airlines

Sun 4/136:34 pmPIT - STL

2 stops25h 07mMultiple Airlines

Deal found 4/1

$329

Fri 8/295:30 pmSTL - PIT

1 stop5h 14mUnited Airlines

Sun 8/316:15 amPIT - STL

2 stops10h 29mUnited Airlines

Deal found 4/2

$450

Sun 4/66:47 pmSTL - PIT

1 stop28h 39mSpirit Airlines

Tue 4/88:18 amPIT - STL

1 stop10h 34mSpirit Airlines

Deal found 4/2

$524

Fri 5/306:52 amSTL - PIT

2 stops22h 53mAlaska Airlines

Sun 6/17:44 pmPIT - STL

2 stops28h 20mAlaska Airlines

Deal found 3/31

$899

Best flights from St. Louis to Pittsburgh
Discover carefully curated flight deals from St. Louis to Pittsburgh that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 3, 2025.

Wed 4/3010:42 amSTL - PIT

1 stop3h 48mDelta

Sun 5/45:50 amPIT - STL

1 stop6h 55mDelta

Deal found 4/2

$242

Wed 4/3012:45 pmSTL - PIT

Nonstop1h 35mSouthwest

Sun 5/49:20 pmPIT - STL

1 stop3h 50mSouthwest

Deal found 4/2

$256

Wed 4/3012:15 pmSTL - PIT

3 stops30h 57mMultiple Airlines

Sun 5/47:00 amPIT - STL

1 stop11h 15mMultiple Airlines

Deal found 4/2

$335

Fri 8/295:30 pmSTL - PIT

1 stop5h 14mUnited Airlines

Sun 8/316:15 amPIT - STL

2 stops10h 29mUnited Airlines

Deal found 4/2

$450

Last-minute flights from St. Louis to Pittsburgh
Discover last-minute flight deals from St. Louis to Pittsburgh. Data last updated April 3, 2025 and is based on user searches.

Wed 4/212:58 pmSTL - PIT

1 stop7h 09mAmerican Airlines

Thu 4/36:56 pmPIT - STL

1 stop6h 00mAmerican Airlines

Deal found 4/2

$604

Sun 4/66:47 pmSTL - PIT

1 stop28h 39mSpirit Airlines

Tue 4/88:18 amPIT - STL

1 stop10h 34mSpirit Airlines

Deal found 4/2

$524

Mon 4/71:12 pmSTL - PIT

1 stop6h 27mUnited Airlines

Tue 4/158:00 pmPIT - STL

3 stops20h 47mUnited Airlines

Deal found 4/2

$701

Mon 4/76:39 amSTL - PIT

1 stop5h 45mDelta

Tue 4/157:38 amPIT - STL

1 stop5h 07mDelta

Deal found 4/2

$749

Thu 4/104:57 pmSTL - PIT

1 stop14h 46mFrontier

Sun 4/139:23 pmPIT - STL

1 stop27h 23mFrontier

Deal found 4/2

$218

Thu 4/109:20 amSTL - PIT

3 stops22h 29mMultiple Airlines

Sun 4/136:34 pmPIT - STL

2 stops25h 07mMultiple Airlines

Deal found 4/2

$470

Thu 4/106:10 pmSTL - PIT

2 stops16h 30mSpirit Airlines

Sun 4/137:00 amPIT - STL

1 stop11h 15mSpirit Airlines

Deal found 4/2

$573

Thu 4/101:48 pmSTL - PIT

1 stop3h 56mAmerican Airlines

Mon 4/144:05 pmPIT - STL

1 stop5h 42mAmerican Airlines

Deal found 4/2

$641

Thu 4/104:10 pmSTL - PIT

Nonstop1h 35mSouthwest

Sun 4/1310:00 amPIT - STL

1 stop7h 25mSouthwest

Deal found 4/2

$719

Wed 4/3010:42 amSTL - PIT

1 stop3h 48mDelta

Sun 5/45:50 amPIT - STL

1 stop6h 55mDelta

Deal found 4/2

$242

Wed 4/3012:45 pmSTL - PIT

Nonstop1h 35mSouthwest

Sun 5/49:20 pmPIT - STL

1 stop3h 50mSouthwest

Deal found 4/2

$256

Wed 4/3012:15 pmSTL - PIT

3 stops30h 57mMultiple Airlines

Sun 5/47:00 amPIT - STL

1 stop11h 15mMultiple Airlines

Deal found 4/2

$335

One-way flights from St. Louis to Pittsburgh
Search for one-way flight options from St. Louis to Pittsburgh. Find affordable one-way fares based on user searches. Data last updated April 3, 2025.

Tue 5/66:10 pmSTL - PIT

1 stop28h 09mSpirit Airlines

Deal found 4/2

$101

Wed 5/75:29 pmSTL - PIT

1 stop5h 29mUnited Airlines

Deal found 4/2

$113

Sun 5/45:45 pmSTL - PIT

1 stop22h 39mFrontier

Deal found 4/2

$118

Wed 4/3010:42 amSTL - PIT

1 stop3h 48mDelta

Deal found 4/2

$123

Thu 6/51:50 pmSTL - PIT

Nonstop1h 35mSouthwest

Deal found 4/2

$127

Thu 6/510:10 amSTL - PIT

2 stops34h 15mMultiple Airlines

Deal found 4/2

$152

Wed 4/306:13 amSTL - PIT

2 stops9h 05mAmerican Airlines

Deal found 4/2

$163

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Pittsburgh that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Thu 4/24

5:41 pm-8:10 pm

1 stop25h 29m

Pittsburgh

Mon 4/28

9:00 pm-12:04 am

1 stop28h 04m

$189

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Wed 4/30

10:42 am-3:30 pm

1 stop3h 48m

Pittsburgh

Sun 5/4

5:50 am-11:45 am

1 stop6h 55m

$242

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Sat 6/7

4:17 pm-11:51 pm

1 stop6h 34m

Pittsburgh

Tue 6/10

10:06 am-1:37 pm

1 stop4h 31m

$247

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Sat 6/7

9:55 am-12:30 pm

Nonstop1h 35m

Pittsburgh

Tue 6/10

1:25 pm-2:10 pm

Nonstop1h 45m

$253

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Tue 4/8

9:50 am-8:12 pm

3 stops33h 22m

Pittsburgh

Sun 4/13

6:34 pm-6:41 pm

2 stops25h 07m

$329

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Fri 4/25

5:35 pm-11:44 pm

1 stop5h 09m

Pittsburgh

Mon 4/28

8:00 pm-2:42 pm

2 stops19h 42m

$451

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Sun 4/6

6:47 pm-12:26 am

1 stop28h 39m

Pittsburgh

Tue 4/8

8:18 am-5:52 pm

1 stop10h 34m

$524

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Fri 5/30

6:52 am-6:45 am

2 stops22h 53m

Pittsburgh

Sun 6/1

7:44 pm-11:04 pm

2 stops28h 20m

$899

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Tue 5/6

6:10 pm-11:19 pm

1 stop28h 09m

$98

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Thu 4/10

4:57 pm-8:43 am

1 stop14h 46m

$106

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Showing 1-10 of 15 results

Compare providers for flights from St. Louis to Pittsburgh

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 April.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars

*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 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?

The best time to book flights from St. Louis to Pittsburgh is 27 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, August is the cheapest month in which you can book a flight from St. Louis to Pittsburgh (average of $262). Flying from St. Louis to Pittsburgh in November is currently the most expensive (average of $333). 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?

It’s typically best to fly out from St. Louis to Pittsburgh in the afternoon. Doing so could potentially save you 18% on the flight price compared to flying at noon, which is usually more expensive.

Rainfall in Pittsburgh by month

In terms of precipitation, rainfall in Pittsburgh ranges from 2.3 - 4.3 inches per month. June is typically the wettest month, when rainfall can reach 4.3 in. October is typically the driest time to visit Pittsburgh when rainfall is around 2.3 in.

Temperature in Pittsburgh by month

If weather is an important factor for your trip to Pittsburgh, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 28.4 F).

Reviews of airlines servicing Pittsburgh

Read through reviews of airlines operating flights from St. Louis to Pittsburgh, such as Southwest, Delta and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,274 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Southwest

8.0

Very good

4,274 reviews

Southwest

8.0

Very good

4,274 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Delta

8.0

Very good

7,897 reviews

Southwest

8.0

Very good

4,274 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

United Airlines

7.4

Good

8,619 reviews

Southwest

8.0

Very good

4,274 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,274 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Spirit Airlines

6.3

Okay

7,889 reviews

Southwest

8.0

Very good

4,274 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

What airports do I use to fly from St. Louis to Pittsburgh?
If you wish to fly to Pittsburgh from St. Louis, then you need to book flights from Lambert-St Louis to Pittsburgh. There is 1 flight from Lambert-St Louis (STL) to Pittsburgh (PIT) per day to choose from. Flights to Pittsburgh from Lambert-St Louis are available from 4 different airlines, which means you should have some options if you want to compare airfare deals. 1h 35m is how long a nonstop flight from St. Louis to Pittsburgh typically takes.
What are the cheapest airlines flying from St. Louis to Pittsburgh round-trip?
Currently priced at $242, Delta will fly you from St. Louis to Pittsburgh and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Southwest and United Airlines - these airlines can fly you to your destination from $256 and $450, respectively. These flights start at 32% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from St. Louis to Pittsburgh one-way?
The cheapest airline one-way is Spirit Airlines, with whom users have recently found tickets for as low as $101. However, be on the lookout for offers from United Airlines and Frontier, as they are both options that can get you from St. Louis to Pittsburgh for a low price.
What are the cheapest flights from St. Louis to Pittsburgh?
The cheapest flight price from St. Louis to Pittsburgh is $253. On average you can expect to pay $370. The most popular route, (Lambert-St Louis - Pittsburgh), can usually be booked for $240.
Can I find deals for flights from St. Louis to Pittsburgh that include hotel bookings?
Yes. In addition to deals on St. Louis to Pittsburgh flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Pittsburgh?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Pittsburgh.
Can I find deals for business class flights from St. Louis to Pittsburgh?
Yes. Cheapflights offers flight deals from St. Louis to Pittsburgh 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 St. Louis to Pittsburgh?
Currently, August is the cheapest month in which you can book a flight from St. Louis to Pittsburgh (average of $262). Flying from St. Louis to Pittsburgh in November is currently the most expensive (average of $333). 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

Monroeville

Washington

Steubenville

Belle Vernon

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Top 4 airlines flying from St. Louis to Pittsburgh

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$249	Average$344	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$258	Average$398	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$258	Average$339	FlexibilityNo cancel fee	On-timeN/A
Southwest	Cheapest$276	Average$369	FlexibilityNo cancel fee	On-time63%

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$98+ 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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Pittsburgh with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Lambert-St Louis to Pittsburgh are usually found in August or April, booked 27 days in advance, depart on a Tuesday or Wednesday and return on a Thursday

Cheap flight deals from St. Louis to Pittsburgh

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Find 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 April 3, 2025.

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 April 3, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Pittsburgh that are best for you.

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 April.

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.

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 March 28, 2025.

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

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 April 3, 2025.

Rainfall in Pittsburgh by month

Plan your trip to Pittsburgh by taking into account the average rainfall totals by month.

Temperature in Pittsburgh by month

Plan your trip to Pittsburgh by taking into account the average temperature totals by month.

Reviews of airlines servicing Pittsburgh

Read through reviews of airlines operating flights from St. Louis to Pittsburgh, such as Southwest, Delta and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

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.

What airports do I use to fly from St. Louis to Pittsburgh?

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

What are the cheapest airlines to fly from St. Louis to Pittsburgh one-way?

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

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

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

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

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

Traveling to a place near St. Louis?

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Alternative routes for St. Louis to Pittsburgh

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Top 4 airlines flying from St. Louis to Pittsburgh

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Cheapest flights from St. Louis to Pittsburgh
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 April 3, 2025.