How many flights depart from St. Louis to Pittsburgh on average per week?

The number of flights available between St. Louis and Pittsburgh is 5 per week as of November 2025. The most frequent departure day is Mon, with 20% of weekly flights leaving on this day.

Which layover airport has the shortest connection time from St. Louis to Pittsburgh?

Nashville (BNA) has the shortest average layover time for this route: 0h 48m.

What airlines fly to Pittsburgh?

Southwest, American Airlines and Delta are the top three most popular airlines that fly to Pittsburgh from St. Louis according to our data. Southwest is the first choice among our users, with 64% of people opting to fly with this airline when traveling to Pittsburgh. Keep in mind that there are 4 different airlines that fly to Pittsburgh on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Lambert-St Louis to Pittsburgh?

Southwest, American Airlines, and Delta are the most popular carriers operating from Lambert-St Louis to Pittsburgh

Which airport is the most popular layover for flights between St. Louis and Pittsburgh?

Nashville (BNA) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from St. Louis to Pittsburgh?

Flights via Atlanta (ATL) offer the lowest average round-trip price of $258.

Which layover airport has the shortest travel time from St. Louis to Pittsburgh?

Flights connecting via Nashville (BNA) have the shortest average one-way travel time: 3h 30m.

When did momondo last update prices for flights from Lambert-St Louis Airport to Pittsburgh Airport?

Prices for flights from Lambert-St Louis Airport to Pittsburgh Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Lambert-St Louis Airport to Pittsburgh Airport?

The number of operators available for flights from Lambert-St Louis Airport to Pittsburgh Airport is 4 as of November 2025.

How old do you have to be to fly from Lambert-St Louis Airport to Pittsburgh Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Pittsburgh Airport.

What documentation or ID do you need to fly to Pittsburgh Airport?

The travel and health documents you'll need for your trip to Pittsburgh Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Pittsburgh Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$69 Cheap Flights from St. Louis to Pittsburgh in 2025/26

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Cheap round-trip flights

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3:20 pm - 9:00 pmSTL-PIT

4h 40m1 stop

6:25 am - 10:21 amPIT-STL

4h 56m1 stop

$175American Airlines

Find Deal

Tue, Jan 6 - Sat, Jan 10

9:08 am - 5:09 pmSTL-PIT

7h 01m1 stop

7:24 am - 4:23 pmPIT-STL

9h 59m1 stop

$183American Airlines

Find Deal

Thu, Dec 25 - Thu, Jan 1

6:00 am - 10:55 amSTL-PIT

3h 55m1 stop

12:01 pm - 5:56 pmPIT-STL

6h 55m1 stop

$191Delta

Find Deal

Mon, Dec 8 - Mon, Dec 15

5:11 pm - 11:27 pmSTL-PIT

29h 16m2 stops

10:45 am - 7:50 amPIT-STL

22h 05m1 stop

$228Multiple Airlines

Find Deal

Tue, Jan 6 - Sat, Jan 10

10:47 am - 4:10 pmSTL-PIT

52h 23m2 stops

7:10 am - 10:33 pmPIT-STL

16h 23m1 stop

$229Multiple Airlines

Find Deal

Mon, Dec 8 - Mon, Dec 15

6:15 pm - 8:50 pmSTL-PIT

1h 35mnonstop

10:25 am - 5:00 pmPIT-STL

7h 35m1 stop

$230Southwest

Find Deal

Tue, Jan 6 - Sat, Jan 10

6:35 am - 1:56 pmSTL-PIT

6h 21m1 stop

1:43 pm - 7:24 pmPIT-STL

6h 41m1 stop

$235Delta

Find Deal

Mon, Mar 2 - Wed, Mar 4

10:15 am - 5:40 pmSTL-PIT

6h 25m2 stops

1:15 pm - 7:00 pmPIT-STL

6h 45m1 stop

$240Southwest

Find Deal

Tue, Jan 6 - Thu, Jan 8

11:35 am - 5:40 pmSTL-PIT

5h 05m1 stop

12:30 pm - 1:30 pmPIT-STL

2h 00mnonstop

$243Southwest

Find Deal

Wed, Jan 28 - Fri, Jan 30

9:57 am - 4:44 pmSTL-PIT

5h 47m1 stop

8:10 pm - 2:30 pmPIT-STL

19h 20m2 stops

$495United Airlines

Find Deal

Fri, Jan 16 - Mon, Jan 19

American Airlines flights from St. Louis to Pittsburgh

Our best American Airlines deals on St. Louis to Pittsburgh flight tickets

American Airlines

Jan 6

STL3:20 pmLambert-St Louis

4h 40m

1 stop

PIT9:00 pmPittsburgh

Jan 10

PIT6:25 amPittsburgh

4h 56m

1 stop

STL10:21 amLambert-St Louis

$175

Find similar

American Airlines

Dec 25

STL9:08 amLambert-St Louis

7h 01m

1 stop

PIT5:09 pmPittsburgh

Jan 1

PIT7:24 amPittsburgh

9h 59m

1 stop

STL4:23 pmLambert-St Louis

$183

Find similar

American Airlines

Dec 31

STL6:00 amLambert-St Louis

9h 20m

1 stop

PIT4:20 pmPittsburgh

Jan 4

PIT5:54 pmPittsburgh

4h 51m

1 stop

STL9:45 pmLambert-St Louis

$266

Find similar

Delta flights from St. Louis to Pittsburgh

Our best Delta deals on St. Louis to Pittsburgh flight tickets

Delta

Dec 8

STL6:00 amLambert-St Louis

3h 55m

1 stop

PIT10:55 amPittsburgh

Dec 15

PIT12:01 pmPittsburgh

6h 55m

1 stop

STL5:56 pmLambert-St Louis

$191

Find similar

Delta

Mar 2

STL6:35 amLambert-St Louis

6h 21m

1 stop

PIT1:56 pmPittsburgh

Mar 4

PIT1:43 pmPittsburgh

6h 41m

1 stop

STL7:24 pmLambert-St Louis

$235

Find similar

Delta

Dec 5

STL6:39 amLambert-St Louis

3h 33m

1 stop

PIT11:12 amPittsburgh

Dec 8

PIT12:01 pmPittsburgh

6h 55m

1 stop

STL5:56 pmLambert-St Louis

$277

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Tue 1/6

3:20 pm-9:00 pm

1 stop4h 40m

Pittsburgh

Sat 1/10

6:25 am-10:21 am

1 stop4h 56m

$175

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Thu 12/25

9:08 am-5:09 pm

1 stop7h 01m

Pittsburgh

Thu 1/1

7:24 am-4:23 pm

1 stop9h 59m

$183

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Mon 12/8

6:00 am-10:55 am

1 stop3h 55m

Pittsburgh

Mon 12/15

12:01 pm-5:56 pm

1 stop6h 55m

$191

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Tue 1/6

5:11 pm-11:27 pm

2 stops29h 16m

Pittsburgh

Sat 1/10

10:45 am-7:50 am

1 stop22h 05m

$228

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Mon 12/8

10:47 am-4:10 pm

2 stops52h 23m

Pittsburgh

Mon 12/15

7:10 am-10:33 pm

1 stop16h 23m

$229

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Tue 1/6

6:15 pm-8:50 pm

Nonstop1h 35m

Pittsburgh

Sat 1/10

10:25 am-5:00 pm

1 stop7h 35m

$230

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Mon 3/2

6:35 am-1:56 pm

1 stop6h 21m

Pittsburgh

Wed 3/4

1:43 pm-7:24 pm

1 stop6h 41m

$235

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Tue 1/6

10:15 am-5:40 pm

2 stops6h 25m

Pittsburgh

Thu 1/8

1:15 pm-7:00 pm

1 stop6h 45m

$240

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Wed 1/28

11:35 am-5:40 pm

1 stop5h 05m

Pittsburgh

Fri 1/30

12:30 pm-1:30 pm

Nonstop2h 00m

$243

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Fri 1/16

9:57 am-4:44 pm

1 stop5h 47m

Pittsburgh

Mon 1/19

8:10 pm-2:30 pm

2 stops19h 20m

$495

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from St. Louis to Pittsburgh

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

Other information

What is the cheapest month to fly to Pittsburgh?

In general, May is the cheapest month to fly from St. Louis to Pittsburgh. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $294. The month of August is another great option to travel to Pittsburgh, with average flight prices from St. Louis averaging around $316.

What is the cheapest day to depart on your flight to Pittsburgh?

The cheapest day to depart on your flight to Pittsburgh is on a Wednesday when prices can be found for as low as $277. This is often the case because there is less demand to fly during this day of the week. Flights from St. Louis to Pittsburgh on a Sunday will generally be more expensive and average around $545. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Pittsburgh?

Our data shows that the cheapest St. Louis to Pittsburgh flights are usually those with departure times in the afternoon. Our users have found flights to Pittsburgh in the afternoon for as low as $294. Flights to Pittsburgh are more costly in the evening, with an average ticket price of $545. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Lambert-St Louis to Pittsburgh flight route?

Fly from Lambert-St Louis to Pittsburgh for the best Lambert-St Louis - Pittsburgh flight prices

How far in advance should I book a flight to Pittsburgh?

You are more likely to see cheaper flights to Pittsburgh from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Pittsburgh for around $362 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Pittsburgh from St. Louis for as low as $175 on momondo.

What cabin class options are available on Lambert-St Louis to Pittsburgh flights?

There is only 1 cabin class available to choose from on Lambert-St Louis to Pittsburgh flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on St. Louis to Pittsburgh flights?

You could potentially save up to 34% on your flight if you consider stops on a St. Louis to Pittsburgh flight.

How have St. Louis to Pittsburgh flight prices changed over time?

As of November 2025, prices for St. Louis to Pittsburgh flights are approximately 46% more expensive when compared to flights at the same time last year.

When to book flights from St. Louis to Pittsburgh

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Pittsburgh according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap St. Louis to Pittsburgh (STL to PIT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Pittsburgh

Best Price Found	$169
Fastest flight time	1h 35m
Direct flights	Mon, Wed, Thu, Fri, Sat and Sun
Airports in Pittsburgh	1 airport

The best one-way flight to Pittsburgh from St. Louis in the past 72 hours is $169. The best round-trip flight deal from St. Louis to Pittsburgh found on momondo in the last 72 hours is $263.

The fastest flight from St. Louis to Pittsburgh takes 1h 35m

Direct flights go from St. Louis to Pittsburgh on Monday, Wednesday, Thursday, Friday, Saturday and Sunday. The only airline offering direct flights is Southwest.

There is 1 airport near Pittsburgh: Pittsburgh (PIT)

Search flight deals

How far is Lambert-St Louis to Pittsburgh by plane?
The distance between Lambert-St Louis and Pittsburgh is about 557.2 mi. Typically, this will take 1h 35m by plane in normal conditions.
When did momondo last update prices for flights from Lambert-St Louis Airport to Pittsburgh Airport?
Prices for flights from Lambert-St Louis Airport to Pittsburgh Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Lambert-St Louis Airport to Pittsburgh Airport?
The number of operators available for flights from Lambert-St Louis Airport to Pittsburgh Airport is 4 as of November 2025.
How old do you have to be to fly from Lambert-St Louis Airport to Pittsburgh Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Pittsburgh Airport.
What documentation or ID do you need to fly to Pittsburgh Airport?
The travel and health documents you'll need for your trip to Pittsburgh Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Pittsburgh Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from St. Louis to Pittsburgh?
Based on momondo bookings for flights between St. Louis and Pittsburgh, the leading plane model is Boeing 737-700 Passenger/BBJ1 (winglets), making up 28.21% of the total bookings. Other popular models include Boeing 737 MAX 8 with 15.38%, Embraer 175 with 12.82%, and Boeing 737-800 Passenger/BBJ2 (winglets) with 12.82%.
What is the most popular airline from St. Louis to Pittsburgh?
Based on momondo bookings for flights between St. Louis and Pittsburgh, the leading airline is Southwest, making up 64% of the total bookings. Other popular airlines include American Airlines with 18%, Delta with 14%, and United Airlines with 5%.

Best airlines flying from St. Louis to Pittsburgh

Compare and see reviews for airlines that fly from St. Louis to Pittsburgh with momondo

Airline	Rating	Free Cancellation	Price
Southwest	PriceFrom $248	Free Cancellation	Rating 8.0 4,235 reviews	Search Southwest flights
United Airlines	PriceFrom $258	Free Cancellation	Rating 7.4 9,012 reviews	Search United Airlines flights
Delta	PriceFrom $258	Free Cancellation	Rating 7.9 8,007 reviews	Search Delta flights
American Airlines	PriceFrom $258	Free Cancellation	Rating 7.2 11,045 reviews	Search American Airlines flights

Southwest Flights From St. Louis to Pittsburgh
Southwest flight deals from St. Louis to Pittsburgh start from $248 round-trip. Over the 5 Southwest flights for this route in a normal week, average airfare is usually $367 round-trip - but some users have found much cheaper deals with momondo.

Washington

Monroeville

Wheeling

Butler

Canonsburg

Belle Vernon

Triadelphia

New Castle

West Mifflin

Steubenville

Moon

Coraopolis

Wexford

Mars

Cadiz

Freeport

Chester

Bridgeport

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Pittsburgh?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from St. Louis to Pittsburgh. momondo saves you time and could save you money on your trip.

Can I find flights from St. Louis to Pittsburgh with flexible booking policies on momondo?

Flights from St. Louis to Pittsburgh with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from St. Louis to Pittsburgh?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Pittsburgh from St. Louis.

I’m not ready to book a flight from St. Louis to Pittsburgh right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Pittsburgh, momondo offers a useful price alert feature which will track prices for flights to Pittsburgh from St. Louis and alert you when they change.

An easier way to manage your Pittsburgh trip

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Cheap flights from St. Louis to Pittsburgh from $69

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Pittsburgh departing on 3/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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American Airlines flights from St. Louis to Pittsburgh

Our best American Airlines deals on St. Louis to Pittsburgh flight tickets

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Our best Delta deals on St. Louis to Pittsburgh flight tickets

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See travel insights to Pittsburgh from

How to get the cheapest flight ticket from St. Louis to Pittsburgh

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Pittsburgh?

What is the cheapest day to depart on your flight to Pittsburgh?

What is the cheapest time of day to depart on your flight to Pittsburgh?

What is the cheapest Lambert-St Louis to Pittsburgh flight route?

Fly from Lambert-St Louis to Pittsburgh for the best Lambert-St Louis - Pittsburgh flight prices

How far in advance should I book a flight to Pittsburgh?

What cabin class options are available on Lambert-St Louis to Pittsburgh flights?

There is only 1 cabin class available to choose from on Lambert-St Louis to Pittsburgh flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on St. Louis to Pittsburgh flights?

You could potentially save up to 34% on your flight if you consider stops on a St. Louis to Pittsburgh flight.

How have St. Louis to Pittsburgh flight prices changed over time?

As of November 2025, prices for St. Louis to Pittsburgh flights are approximately 46% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Lambert-St Louis to Pittsburgh?

Southwest, American Airlines, and Delta are the most popular carriers operating from Lambert-St Louis to Pittsburgh

What airlines fly to Pittsburgh?

Which airport is the most popular layover for flights between St. Louis and Pittsburgh?

Nashville (BNA) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from St. Louis to Pittsburgh?

Flights via Atlanta (ATL) offer the lowest average round-trip price of $258.

Which layover airport has the shortest travel time from St. Louis to Pittsburgh?

Flights connecting via Nashville (BNA) have the shortest average one-way travel time: 3h 30m.

Which layover airport has the shortest connection time from St. Louis to Pittsburgh?

Nashville (BNA) has the shortest average layover time for this route: 0h 48m.

How many flights depart from St. Louis to Pittsburgh on average per week?

The number of flights available between St. Louis and Pittsburgh is 5 per week as of November 2025. The most frequent departure day is Mon, with 20% of weekly flights leaving on this day.

When to book flights from St. Louis to Pittsburgh

Cheap St. Louis to Pittsburgh (STL to PIT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Pittsburgh

Best Price Found

Fastest flight time

Direct flights

Airports in Pittsburgh

How far is Lambert-St Louis to Pittsburgh by plane?

When did momondo last update prices for flights from Lambert-St Louis Airport to Pittsburgh Airport?

How many operators does momondo search for flights from Lambert-St Louis Airport to Pittsburgh Airport?

How old do you have to be to fly from Lambert-St Louis Airport to Pittsburgh Airport?

What documentation or ID do you need to fly to Pittsburgh Airport?

What is the most popular plane model from St. Louis to Pittsburgh?

What is the most popular airline from St. Louis to Pittsburgh?

Best airlines flying from St. Louis to Pittsburgh

Compare and see reviews for airlines that fly from St. Louis to Pittsburgh with momondo

Southwest Flights From St. Louis to Pittsburgh

Traveling to a place near Pittsburgh?

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Pittsburgh?

Can I find flights from St. Louis to Pittsburgh with flexible booking policies on momondo?

How can momondo help me find flights from St. Louis to Pittsburgh?

I’m not ready to book a flight from St. Louis to Pittsburgh right now. Can momondo alert me if prices change?

An easier way to manage your Pittsburgh trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Pennsylvania