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Cheap flights from St. Louis to Pittsburgh from $87

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 2/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from St. Louis to Pittsburgh

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
11:05 am - 9:00 pm
STL
-
PIT
8h 55m1 stop
American Airlines Logo
8:06 am - 2:50 pm
PIT
-
STL
7h 44m1 stop
$171American Airlines
Thu, Jan 22 - Tue, Jan 27
American Airlines Logo
9:18 am - 7:23 pm
STL
-
PIT
9h 05m1 stop
American Airlines Logo
11:43 am - 6:14 pm
PIT
-
STL
7h 31m1 stop
$177American Airlines
Wed, Dec 31 - Wed, Jan 7
American Airlines Logo
6:00 am - 5:09 pm
STL
-
PIT
10h 09m1 stop
American Airlines Logo
7:24 am - 4:23 pm
PIT
-
STL
9h 59m1 stop
$183American Airlines
Thu, Dec 25 - Thu, Jan 1
American Airlines Logo
6:00 am - 5:09 pm
STL
-
PIT
10h 09m1 stop
American Airlines Logo
7:24 am - 4:23 pm
PIT
-
STL
9h 59m1 stop
$187American Airlines
Thu, Dec 25 - Thu, Jan 1
Multiple Airlines Logo
10:44 pm - 6:01 pm
STL
-
PIT
18h 17m2 stops
Multiple Airlines Logo
6:10 am - 10:33 pm
PIT
-
STL
17h 23m1 stop
$232Multiple Airlines
Sun, Dec 14 - Wed, Jan 7
American Airlines Logo
10:04 am - 9:00 pm
STL
-
PIT
9h 56m1 stop
American Airlines Logo
6:58 pm - 11:28 pm
PIT
-
STL
5h 30m1 stop
$245American Airlines
Thu, Feb 19 - Fri, Feb 20
American Airlines Logo
10:04 am - 9:00 pm
STL
-
PIT
9h 56m1 stop
American Airlines Logo
7:22 am - 3:01 pm
PIT
-
STL
8h 39m1 stop
$260American Airlines
Fri, Feb 27 - Sun, Mar 1
Multiple Airlines Logo
5:42 pm - 4:45 pm
STL
-
PIT
22h 03m1 stop
Multiple Airlines Logo
5:50 pm - 11:33 pm
PIT
-
STL
30h 43m2 stops
$265Multiple Airlines
Thu, Jan 22 - Tue, Jan 27
American Airlines Logo
9:18 am - 9:00 pm
STL
-
PIT
10h 42m1 stop
American Airlines Logo
9:45 pm - 1:25 am
PIT
-
STL
4h 40m1 stop
$266American Airlines
Wed, Dec 31 - Sun, Jan 4
Multiple Airlines Logo
10:48 am - 10:42 pm
STL
-
PIT
34h 54m2 stops
Multiple Airlines Logo
8:00 am - 10:56 am
PIT
-
STL
27h 56m1 stop
$267Multiple Airlines
Tue, Dec 23 - Wed, Dec 31

American Airlines flights from St. Louis to Pittsburgh

Our best American Airlines deals on St. Louis to Pittsburgh flight tickets
American Airlines
Jan 22
STL11:05 amLambert-St Louis
8h 55m
1 stop
PIT9:00 pmPittsburgh
Jan 27
PIT8:06 amPittsburgh
7h 44m
1 stop
STL2:50 pmLambert-St Louis
$171
Find similar
American Airlines
Dec 31
STL9:18 amLambert-St Louis
9h 05m
1 stop
PIT7:23 pmPittsburgh
Jan 7
PIT11:43 amPittsburgh
7h 31m
1 stop
STL6:14 pmLambert-St Louis
$177
Find similar
American Airlines
Dec 25
STL6:00 amLambert-St Louis
10h 09m
1 stop
PIT5:09 pmPittsburgh
Jan 1
PIT7:24 amPittsburgh
9h 59m
1 stop
STL4:23 pmLambert-St Louis
$183
Find similar

Delta flights from St. Louis to Pittsburgh

Our best Delta deals on St. Louis to Pittsburgh flight tickets
Delta
Jan 8
STL12:00 pmLambert-St Louis
4h 02m
1 stop
PIT5:02 pmPittsburgh
Jan 12
PIT6:51 pmPittsburgh
14h 43m
1 stop
STL8:34 amLambert-St Louis
$273
Find similar
Delta
Dec 9
STL9:30 amLambert-St Louis
5h 51m
1 stop
PIT4:21 pmPittsburgh
Dec 10
PIT10:17 amPittsburgh
7h 04m
1 stop
STL4:21 pmLambert-St Louis
$503
Find similar
Delta
Dec 5
STL7:02 pmLambert-St Louis
4h 10m
1 stop
PIT12:12 amPittsburgh
Dec 6
PIT2:00 pmPittsburgh
4h 19m
1 stop
STL5:19 pmLambert-St Louis
$571
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Pittsburgh that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated December 4, 2025.
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 1/22

11:05 am-9:00 pm

1 stop8h 55m

Pittsburgh

Tue 1/27

8:06 am-2:50 pm

1 stop7h 44m

$171

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Wed 12/31

9:18 am-7:23 pm

1 stop9h 05m

Pittsburgh

Wed 1/7

11:43 am-6:14 pm

1 stop7h 31m

$177

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Thu 12/25

6:00 am-5:09 pm

1 stop10h 09m

Pittsburgh

Thu 1/1

7:24 am-4:23 pm

1 stop9h 59m

$183

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Thu 12/25

6:00 am-5:09 pm

1 stop10h 09m

Pittsburgh

Thu 1/1

7:24 am-4:23 pm

1 stop9h 59m

$187

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Sun 12/14

10:44 pm-6:01 pm

2 stops18h 17m

Pittsburgh

Wed 1/7

6:10 am-10:33 pm

1 stop17h 23m

$232

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Thu 2/19

10:04 am-9:00 pm

1 stop9h 56m

Pittsburgh

Fri 2/20

6:58 pm-11:28 pm

1 stop5h 30m

$245

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Fri 2/27

10:04 am-9:00 pm

1 stop9h 56m

Pittsburgh

Sun 3/1

7:22 am-3:01 pm

1 stop8h 39m

$260

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Thu 1/22

5:42 pm-4:45 pm

1 stop22h 03m

Pittsburgh

Tue 1/27

5:50 pm-11:33 pm

2 stops30h 43m

$265

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Wed 12/31

9:18 am-9:00 pm

1 stop10h 42m

Pittsburgh

Sun 1/4

9:45 pm-1:25 am

1 stop4h 40m

$266

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Tue 12/23

10:48 am-10:42 pm

2 stops34h 54m

Pittsburgh

Wed 12/31

8:00 am-10:56 am

1 stop27h 56m

$267

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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?

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 $311. 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 $361 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 December 2025, prices for St. Louis to Pittsburgh flights are approximately 23% cheaper 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

Fastest flight time

1h 35m

Direct flights

Every day

Airports in Pittsburgh

1 airport
The fastest flight from St. Louis to Pittsburgh takes 1h 35m
Direct flights go from St. Louis to Pittsburgh every day.
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?

  • 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?

  • 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
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $226Free CancellationRating
7.2
11,045 reviews
Search American Airlines flights
SouthwestPriceFrom $242Free CancellationRating
8.0
4,253 reviews
Search Southwest flights
DeltaPriceFrom $258Free CancellationRating
7.9
8,010 reviews
Search Delta flights

  • Southwest Flights From St. Louis to Pittsburgh

    Southwest flight deals from St. Louis to Pittsburgh start from $242 round-trip. Over the 5 Southwest flights for this route in a normal week, average airfare is usually $366 round-trip - but some users have found much cheaper deals with momondo.

Traveling to a place near Pittsburgh?

Book flights to Pittsburgh if you plan to visit one of these locations
Washington
Monroeville
Wheeling
Butler
Canonsburg
Triadelphia
New Castle
West Mifflin
Steubenville
Belle Vernon
Moon
Coraopolis
Wexford
Mars
Freeport
Cadiz
Chester
Bridgeport
Edgewood

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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