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Cheap flights from St. Louis to Pittsburgh from $59

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 11/24. 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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Cheap round-trip flights

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Southwest Logo
1:50 pm - 8:30 pmSTL-PIT
5h 40m1 stop
Southwest Logo
7:15 am - 2:00 pmPIT-STL
7h 45m1 stop
$117Southwest
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Tue, Nov 11 - Thu, Nov 13
Southwest Logo
1:50 pm - 8:30 pmSTL-PIT
5h 40m1 stop
Southwest Logo
1:10 pm - 7:35 pmPIT-STL
7h 25m2 stops
$122Southwest
Find Deal
Tue, Nov 11 - Thu, Nov 13
American Airlines Logo
6:02 am - 12:18 pmSTL-PIT
5h 16m1 stop
American Airlines Logo
8:04 am - 1:13 pmPIT-STL
6h 09m1 stop
$159American Airlines
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Wed, Nov 5 - Thu, Nov 6
American Airlines Logo
6:00 am - 5:09 pmSTL-PIT
10h 09m1 stop
American Airlines Logo
7:24 am - 1:36 pmPIT-STL
7h 12m1 stop
$165American Airlines
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Thu, Dec 25 - Thu, Jan 1
Southwest Logo
5:35 am - 4:45 pmSTL-PIT
10h 10m2 stops
Southwest Logo
5:15 pm - 9:30 pmPIT-STL
5h 15m1 stop
$183Southwest
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Wed, Nov 5 - Thu, Nov 6
Spirit Airlines Logo
6:21 pm - 11:09 amSTL-PIT
15h 48m1 stop
Spirit Airlines Logo
10:15 am - 5:16 pmPIT-STL
8h 01m1 stop
$193Spirit Airlines
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Sun, Nov 2 - Sun, Nov 9
United Airlines Logo
5:27 pm - 11:38 pmSTL-PIT
5h 11m1 stop
United Airlines Logo
6:00 am - 10:41 amPIT-STL
5h 41m1 stop
$257United Airlines
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Tue, Dec 9 - Wed, Jan 14
United Airlines Logo
6:42 pm - 11:38 pmSTL-PIT
3h 56m1 stop
United Airlines Logo
7:00 am - 2:30 pmPIT-STL
8h 30m1 stop
$274United Airlines
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Tue, Dec 9 - Sun, Jan 18
Delta Logo
6:00 am - 11:02 amSTL-PIT
4h 02m1 stop
Delta Logo
5:26 pm - 9:57 pmPIT-STL
5h 31m1 stop
$283Delta
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Wed, Dec 10 - Wed, Dec 17
Delta Logo
6:05 pm - 11:12 pmSTL-PIT
4h 07m1 stop
Delta Logo
6:00 am - 9:44 amPIT-STL
4h 44m1 stop
$296Delta
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Wed, Dec 10 - Sat, Jan 17

American Airlines flights from St. Louis to Pittsburgh

Our best American Airlines deals on St. Louis to Pittsburgh flight tickets
American Airlines
Nov 5
STL6:02 amLambert-St Louis
5h 16m
1 stop
PIT12:18 pmPittsburgh
Nov 6
PIT8:04 amPittsburgh
6h 09m
1 stop
STL1:13 pmLambert-St Louis
$159
Find similar
American Airlines
Dec 25
STL6:00 amLambert-St Louis
10h 09m
1 stop
PIT5:09 pmPittsburgh
Jan 1
PIT7:24 amPittsburgh
7h 12m
1 stop
STL1:36 pmLambert-St Louis
$165
Find similar
American Airlines
Mar 2
STL7:01 pmLambert-St Louis
3h 45m
1 stop
PIT11:46 pmPittsburgh
Mar 4
PIT5:18 pmPittsburgh
5h 26m
1 stop
STL9:44 pmLambert-St Louis
$229
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Southwest flights from St. Louis to Pittsburgh

Our best Southwest deals on St. Louis to Pittsburgh flight tickets
Southwest
Nov 11
STL1:50 pmLambert-St Louis
5h 40m
1 stop
PIT8:30 pmPittsburgh
Nov 13
PIT7:15 amPittsburgh
7h 45m
1 stop
STL2:00 pmLambert-St Louis
$117
Find similar
Southwest
Nov 11
STL1:50 pmLambert-St Louis
5h 40m
1 stop
PIT8:30 pmPittsburgh
Nov 13
PIT1:10 pmPittsburgh
7h 25m
2 stops
STL7:35 pmLambert-St Louis
$122
Find similar
Southwest
Nov 5
STL5:35 amLambert-St Louis
10h 10m
2 stops
PIT4:45 pmPittsburgh
Nov 6
PIT5:15 pmPittsburgh
5h 15m
1 stop
STL9:30 pmLambert-St Louis
$183
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 October 16, 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

Tue 11/11

1:50 pm-8:30 pm

1 stop5h 40m

Pittsburgh

Thu 11/13

7:15 am-2:00 pm

1 stop7h 45m

$117

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Tue 11/11

1:50 pm-8:30 pm

1 stop5h 40m

Pittsburgh

Thu 11/13

1:10 pm-7:35 pm

2 stops7h 25m

$122

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Wed 11/5

6:02 am-12:18 pm

1 stop5h 16m

Pittsburgh

Thu 11/6

8:04 am-1:13 pm

1 stop6h 09m

$159

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-1:36 pm

1 stop7h 12m

$165

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Wed 11/5

5:35 am-4:45 pm

2 stops10h 10m

Pittsburgh

Thu 11/6

5:15 pm-9:30 pm

1 stop5h 15m

$183

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Sun 11/2

6:21 pm-11:09 am

1 stop15h 48m

Pittsburgh

Sun 11/9

10:15 am-5:16 pm

1 stop8h 01m

$193

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Tue 12/9

5:27 pm-11:38 pm

1 stop5h 11m

Pittsburgh

Wed 1/14

6:00 am-10:41 am

1 stop5h 41m

$257

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Tue 12/9

6:42 pm-11:38 pm

1 stop3h 56m

Pittsburgh

Sun 1/18

7:00 am-2:30 pm

1 stop8h 30m

$274

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Wed 12/10

6:00 am-11:02 am

1 stop4h 02m

Pittsburgh

Wed 12/17

5:26 pm-9:57 pm

1 stop5h 31m

$283

St. LouisPittsburgh

STL - PIT

STLPIT

Lambert-St Louis

Wed 12/10

6:05 pm-11:12 pm

1 stop4h 07m

Pittsburgh

Sat 1/17

6:00 am-9:44 am

1 stop4h 44m

$296

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 $315. 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 $352. 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 $356 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 30% 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 October 2025, prices for St. Louis to Pittsburgh flights are approximately 22% 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

$186

Fastest flight time

1h 35m

Direct flights

Every day

Airports in Pittsburgh

1 airport
The best one-way flight to Pittsburgh from St. Louis in the past 72 hours is $186. The best round-trip flight deal from St. Louis to Pittsburgh found on momondo in the last 72 hours is $351.
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
SouthwestPriceFrom $242Free CancellationRating
8.0
4,241 reviews
Search Southwest flights
DeltaPriceFrom $252Free CancellationRating
7.9
7,984 reviews
Search Delta flights
United AirlinesPriceFrom $258Free CancellationRating
7.4
8,982 reviews
Search United Airlines flights
American AirlinesPriceFrom $258Free CancellationRating
7.2
11,043 reviews
Search American Airlines 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 $369 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
West Mifflin
New Castle
Triadelphia
Belle Vernon
Steubenville
Moon
Coraopolis
Mars
Wexford
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.

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