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Cheap flights from St. Louis to Pittsburgh from $89

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 2/20. 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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Find the cheapest flights from St. Louis to Pittsburgh

Cheap round-trip flights

These are some of the best round-trip flight deals from St. Louis to Pittsburgh that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from St. Louis to Pittsburgh.

Cheap last minute flights

Planning a quick getaway from St. Louis to Pittsburgh? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Pittsburgh, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from St. Louis to Pittsburgh

Find recent round-trip train or bus tickets from St. Louis to Pittsburgh.

All round-trip flight deals from St. Louis to Pittsburgh

The cheapest plane tickets from St. Louis to Pittsburgh found on KAYAK recently.
4:00 pm - 5:09 pmSTL-PIT
24h 09m1 stop
6:45 am - 4:42 pmPIT-STL
10h 57m1 stop
$160Spirit Airlines
Find Deal
Tue, Mar 4 - Tue, Mar 11
4:00 pm - 10:36 amSTL-PIT
17h 36m2 stops
6:45 am - 4:42 pmPIT-STL
10h 57m1 stop
$171Spirit Airlines
Find Deal
Tue, Mar 4 - Tue, Mar 11
10:59 am - 5:14 pmSTL-PIT
5h 15m1 stop
6:00 am - 12:00 pmPIT-STL
7h 00m1 stop
$259Delta
Find Deal
Sat, Mar 1 - Sun, Mar 9
12:45 pm - 3:20 pmSTL-PIT
1h 35mnonstop
5:15 pm - 6:00 pmPIT-STL
1h 45mnonstop
$273Southwest
Find Deal
Wed, Apr 9 - Sat, Apr 12
2:15 pm - 7:28 pmSTL-PIT
4h 13m1 stop
7:01 pm - 11:56 pmPIT-STL
5h 55m1 stop
$279American Airlines
Find Deal
Mon, Feb 10 - Mon, Feb 17
6:43 am - 1:25 pmSTL-PIT
5h 42m1 stop
7:42 pm - 11:37 pmPIT-STL
4h 55m1 stop
$299Delta
Find Deal
Fri, Feb 28 - Mon, Mar 3
3:15 pm - 5:50 pmSTL-PIT
1h 35mnonstop
4:15 pm - 5:05 pmPIT-STL
1h 50mnonstop
$311Southwest
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Sat, Mar 1 - Sun, Mar 9
6:40 am - 2:48 pmSTL-PIT
7h 08m1 stop
7:30 am - 1:08 pmPIT-STL
6h 38m1 stop
$397American Airlines
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Fri, May 16 - Sun, May 18
1:03 pm - 9:41 amSTL-PIT
19h 38m2 stops
6:00 am - 11:17 amPIT-STL
6h 17m1 stop
$408United Airlines
Find Deal
Tue, Feb 18 - Tue, Feb 25
8:00 am - 4:40 pmSTL-PIT
7h 40m2 stops
8:50 am - 12:19 pmPIT-STL
4h 29m1 stop
$522United Airlines
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Wed, May 7 - Sun, May 11
4:00 pm - 9:26 amSTL-PIT
16h 26m1 stop
$89Spirit Airlines
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Thu, Feb 20
11:50 am - 5:22 pmSTL-PIT
4h 32m1 stop
$130Delta
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Tue, Feb 18
12:58 pm - 9:07 pmSTL-PIT
7h 09m1 stop
$150American Airlines
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Fri, Mar 21
9:43 am - 5:57 pmSTL-PIT
7h 14m1 stop
$160American Airlines
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Mon, Feb 3
3:40 pm - 8:39 pmSTL-PIT
3h 59m1 stop
$165United Airlines
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Fri, Apr 18
5:40 pm - 12:13 amSTL-PIT
5h 33m1 stop
$170Delta
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Sun, Apr 20
3:20 pm - 10:30 pmSTL-PIT
6h 10m2 stops
$175Southwest
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Thu, Feb 20
8:20 am - 10:55 amSTL-PIT
1h 35mnonstop
$177Southwest
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Thu, Feb 20
6:35 pm - 11:35 pmSTL-PIT
4h 00m1 stop
$180Southwest
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Fri, Mar 14
9:50 am - 10:16 amSTL-PIT
23h 26m3 stops
Mon, Feb 3
7:09 pm - 3:44 pmSTL-PIT
19h 35m1 stop
6:27 pm - 2:43 pmPIT-STL
21h 16m1 stop
Sat, Jan 25 - Mon, Jan 27
4:28 pm - 10:16 amSTL-PIT
16h 48m1 stop
6:00 am - 11:30 amPIT-STL
30h 30m3 stops
Thu, Jan 23 - Fri, Jan 31
4:28 pm - 8:33 pmSTL-PIT
27h 05m2 stops
6:00 am - 11:30 amPIT-STL
30h 30m3 stops
Thu, Jan 23 - Fri, Jan 31
7:20 am - 4:50 pmSTL-PIT
8h 30m1 stop
6:48 am - 2:58 pmPIT-STL
9h 10m1 stop
$587American Airlines
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Thu, Jan 23 - Fri, Jan 31
1:02 pm - 9:26 pmSTL-PIT
7h 24m1 stop
11:26 am - 8:09 pmPIT-STL
9h 43m1 stop
$638American Airlines
Find Deal
Sat, Jan 25 - Tue, Jan 28
6:05 pm - 8:40 pmSTL-PIT
1h 35mnonstop
5:55 pm - 8:40 pmPIT-STL
3h 45m1 stop
$749Southwest
Find Deal
Wed, Jan 22 - Sat, Feb 1
11:30 am - 11:03 pmSTL-PIT
10h 33m2 stops
8:55 am - 2:14 pmPIT-STL
6h 19m1 stop
$846United Airlines
Find Deal
Thu, Jan 23 - Fri, Jan 31
8:45 am - 6:10 pmSTL-PIT
8h 25m1 stop
6:10 am - 3:10 pmPIT-STL
10h 00m2 stops
$933Southwest
Find Deal
Wed, Jan 22 - Sat, Feb 1
2:49 pm - 6:32 pmSTL-PIT
26h 43m2 stops
7:28 pm - 11:03 pmPIT-STL
28h 35m2 stops
$1,413Alaska Airlines
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Wed, Jan 22 - Sat, Feb 1
3:10 pm - 6:32 pmSTL-PIT
26h 22m3 stops
7:28 pm - 11:03 pmPIT-STL
28h 35m2 stops
$1,418Alaska Airlines
Find Deal
Wed, Jan 22 - Sat, Feb 1
4:10 pm - 6:45 pmSTL-PIT
1h 35mnonstop
8:00 pm - 8:50 pmPIT-STL
1h 50mnonstop
$329Southwest
Find Deal
Thu, May 1 - Sun, May 4

Delta flights from St. Louis to Pittsburgh

Our best Delta deals on St. Louis to Pittsburgh flight tickets
Delta
Mar 1
STL10:59 amLambert-St Louis
5h 15m
1 stop
PIT5:14 pmPittsburgh
Mar 9
PIT6:00 amPittsburgh
7h 00m
1 stop
STL12:00 pmLambert-St Louis
Delta
Feb 28
STL6:43 amLambert-St Louis
5h 42m
1 stop
PIT1:25 pmPittsburgh
Mar 3
PIT7:42 pmPittsburgh
4h 55m
1 stop
STL11:37 pmLambert-St Louis

Southwest flights from St. Louis to Pittsburgh

Our best Southwest deals on St. Louis to Pittsburgh flight tickets
Southwest
Apr 9
STL12:45 pmLambert-St Louis
1h 35m
PIT3:20 pmPittsburgh
Apr 12
PIT5:15 pmPittsburgh
1h 45m
STL6:00 pmLambert-St Louis
Southwest
Mar 1
STL3:15 pmLambert-St Louis
1h 35m
PIT5:50 pmPittsburgh
Mar 9
PIT4:15 pmPittsburgh
1h 50m
STL5:05 pmLambert-St Louis
Southwest
Feb 18
STL8:20 amLambert-St Louis
1h 35m
PIT10:55 amPittsburgh
Feb 25
PIT7:25 amPittsburgh
8h 10m
1 stop
STL2:35 pmLambert-St Louis

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 typical price of a round-trip flight between St. Louis and Pittsburgh?

What is the cheapest month to fly to Pittsburgh?

In general, August 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 $309. The month of July is another great option to travel to Pittsburgh, with average flight prices from St. Louis averaging around $318.

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 Thursday when prices can be found for as low as $337. 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 Saturday will generally be more expensive and average around $390. 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 evening. Our users have found flights to Pittsburgh in the evening for as low as $337. Flights to Pittsburgh are more costly at noon, with an average ticket price of $418. Departure times at noon 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 13 weeks ahead of your departure date. In general, you can expect to find flights to Pittsburgh for around $361 when searching 13 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 $293 on momondo.

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

There are 1 cabin classes 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.

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

As of January 2025, prices for St. Louis to Pittsburgh flights are approximately 77% 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

$89

Fastest flight time

1h 35m

Direct flights

Mon, Tue, Fri and Sat

Airports in Pittsburgh

1 airport
The best one-way flight to Pittsburgh from St. Louis in the past 72 hours is $89. The best round-trip flight deal from St. Louis to Pittsburgh found on momondo in the last 72 hours is $160.
The fastest flight from St. Louis to Pittsburgh takes 1h 35m
Direct flights go from St. Louis to Pittsburgh on Monday, Tuesday, Friday and Saturday. The only airline offering direct flights is Southwest.
There is 1 airport near Pittsburgh: Pittsburgh (PIT)

  • 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 $233Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $277Free CancellationRating
8.0
8,521 reviews
Search Delta flights
SouthwestPriceFrom $279Free CancellationRating
8.1
4,662 reviews
Search Southwest flights
United AirlinesPriceFrom $328Free CancellationRating
7.4
8,985 reviews
Search United Airlines flights
  • Southwest Flights From St. Louis to Pittsburgh

    Southwest flight deals from St. Louis to Pittsburgh start from $279 round-trip. Over the 7 Southwest flights for this route in a normal week, average airfare is usually $397 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
Monroeville
Wheeling
Washington
Butler
West Mifflin
Belle Vernon
Moon
New Castle
Steubenville
Coraopolis
Canonsburg
Triadelphia
Wexford
Mars
Freeport
Cadiz

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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