$54 Cheap flights from Pittsburgh Intl. to Lambert-St. Louis Intl. (PIT to STL)

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Find The Best Dates To Fly from Pittsburgh Intl. to Lambert-St. Louis Intl.

Amazing PIT to STL Flight Deals

The cheapest flights to Lambert-St. Louis Intl. found within the past 7 days were $117 round trip and $54 one way. Prices and availability subject to change. Additional terms may apply.

Tue, May 21 - Tue, May 28
PIT
Pittsburgh
STL
St. Louis
$117 Roundtrip, found 2 days ago
$117
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Tue, May 21 from Pittsburgh to St. Louis, returning Tue, May 28, priced at $117 found 2 days ago
Thu, Jun 6 - Tue, Jun 11
PIT
Pittsburgh
STL
St. Louis
$130 Roundtrip, found 2 days ago
$130
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Thu, Jun 6 from Pittsburgh to St. Louis, returning Tue, Jun 11, priced at $130 found 2 days ago
Tue, May 21 - Sat, Jun 1
PIT
Pittsburgh
STL
St. Louis
$131 Roundtrip, found 3 days ago
$131
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Tue, May 21 from Pittsburgh to St. Louis, returning Sat, Jun 1, priced at $131 found 3 days ago
Thu, May 16 - Wed, May 22
PIT
Pittsburgh
STL
St. Louis
$134 Roundtrip, found 4 days ago
$134
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Thu, May 16 from Pittsburgh to St. Louis, returning Wed, May 22, priced at $134 found 4 days ago
Tue, Jun 4 - Sat, Jun 8
PIT
Pittsburgh
STL
St. Louis
$136 Roundtrip, found 5 days ago
$136
Roundtrip
found 5 days ago
Select Spirit Airlines flight, departing Tue, Jun 4 from Pittsburgh to St. Louis, returning Sat, Jun 8, priced at $136 found 5 days ago
Tue, Jun 4 - Wed, Jun 12
PIT
Pittsburgh
STL
St. Louis
$136 Roundtrip, found 5 days ago
$136
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Tue, Jun 4 from Pittsburgh to St. Louis, returning Wed, Jun 12, priced at $136 found 5 days ago
Tue, May 28 - Wed, Jun 5
PIT
Pittsburgh
STL
St. Louis
$142 Roundtrip, found 13 hours ago
$142
Roundtrip
found 13 hours ago
Select Frontier Airlines flight, departing Tue, May 28 from Pittsburgh to St. Louis, returning Wed, Jun 5, priced at $142 found 13 hours ago
Sun, May 26 - Tue, May 28
PIT
Pittsburgh
STL
St. Louis
$146 Roundtrip, found 13 hours ago
$146
Roundtrip
found 13 hours ago
Select Spirit Airlines flight, departing Sun, May 26 from Pittsburgh to St. Louis, returning Tue, May 28, priced at $146 found 13 hours ago
Tue, May 28 - Sat, Jun 1
PIT
Pittsburgh
STL
St. Louis
$148 Roundtrip, found 1 hour ago
$148
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Tue, May 28 from Pittsburgh to St. Louis, returning Sat, Jun 1, priced at $148 found 1 hour ago
Sun, May 19 - Sat, May 25
PIT
Pittsburgh
STL
St. Louis
$152 Roundtrip, found 4 days ago
$152
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Sun, May 19 from Pittsburgh to St. Louis, returning Sat, May 25, priced at $152 found 4 days ago

Frequently asked questions

Can I catch a flight from PIT to St. Louis Lambert International Airport right now?
For info on any current St. Louis Lambert International Airport quarantine requirements and travel advice, visit the Covid-19 Travel Advisor. Look before you arrange your flight, so you don’t get caught up.
Are there direct flights from PIT to STL?
The only thing separating you and your next incredible adventure is a single flight. Southwest Airlines is the only carrier that operates direct services between Pittsburgh Intl. Airport (PIT) and Lambert Field, so it’s wise to book well ahead of your departure.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to St. Louis Lambert International Airport, please visit our Customer Service Portal.
How long is the flight from Pittsburgh Airport to Lambert Field?
The journey between Pittsburgh Intl. Airport (PIT) and Lambert Field is ordinarily around 4 hours and 51 minutes. Make your trip more comfortable by downloading a few episodes on your laptop or tablet and enjoying them with your seat fully reclined.
What is the flight distance from PIT to Lambert-St. Louis Intl. Airport (STL)?
There’s a flight distance of 550 mi between Pittsburgh Airport and Lambert-St. Louis Intl. Airport (STL). Take advantage of your short plane journey to pen down all the places you plan to visit and how you’re going to get there. A comprehensive itinerary is key to having a worry-free vacation.
What airlines fly from PIT to Lambert-St. Louis Intl. Airport (STL)?
Ready to take off on your next grand adventure? Want to get from PIT to Lambert Field in the shortest possible time? Step aboard one of the 30 nonstop flights offered by Southwest Airlines every month, and you’ll be touching down before you can utter ‘Are we there yet?’
What airlines have practices regarding COVID-19 in place and use social distancing?
From the moment you enter the departure terminal to when you leave the arrivals terminal, if you’re flying with Southwest Airlines, American Airlines or Delta you can be sure that COVID-19 measures and social distancing rules have been adhered to. Many airlines have introduced capped capacity flights and keeping the middle seat empty.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

 

Traveling From
Pittsburgh Intl.
Traveling To
Lambert-St. Louis Intl.
Shortest Flight Time
1 hours 45 mins
Earliest Departure Time
3:15PM EDT
Latest Departure Time
3:15PM EDT
Lowest Flight Price
$117

Route Info

Flight path for flights from Pittsburgh International Airport to Lambert-St. Louis International Airport


Origin:
PIT - Pittsburgh International Airport
Destination:
STL - Lambert-St. Louis International Airport
Distance:
643.00 miles


Airlines & Aircraft Used on PIT to STL Flight Routes


Airline Carrier
Aircraft
American Airlines
Airbus A320-100/200
American Airlines
Beechcraft 1900/1900C/1900D
Jet Airways (India)
Aerospatiale/Alenia ATR 42/ ATR 72
United Airlines
Canadair Regional Jet

Discover our best flights from Pittsburgh PIT to St. Louis STL. 

With 20 airlines to choose from on Travelocity, you can easily find the best option for you. Use our filters to sort by price, compare airlines, and find the most convenient flight times. 

 

Find our best return flights from Pittsburgh PIT to St. Louis STL at the right price  

Airfares to St. Louis STL from Pittsburgh PIT currently cost between $117 and $152. It’s usually cheaper to book a round trip than two separate one-way flights. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way flights from Pittsburgh PIT to St. Louis STL 

If you want to be flexible about when you return, or keep your travel options open ended, a one-way flight could be just the ticket! You’ll find one-way airfares from Pittsburgh PIT to St. Louis STL on Travelocity starting at $54. Prices and availability subject to change. Additional terms may apply. 

 

Get to St. Louis STL from Pittsburgh PIT quicker with direct flights. 

Get to St. Louis faster, without the hassle of changing planes and moving baggage, by booking a direct flight. Expect your direct flight to STL from PIT to take around 1 hour(s) 45 min(s).  

 

Find our cheapest airfares for flights from Pittsburgh PIT to St. Louis STL

Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to STL from PIT. Our Price Match Promise means if you find a lower rate on Travelocity.com or on another US-based website within 24 hours of booking, we’ll credit or refund the difference.  

 

Get our best airfare deals for your flight from Pittsburgh PIT to St. Louis STL today 

If you’re flexible about when you travel, May is usually the cheapest month to fly from Pittsburgh PIT to St. Louis STL. If you need to be more specific, search by date and arrival and departure times.Then, compare prices across different airlines, and sort results by lowest price first. 

 

Book flexible airline tickets for flights to St. Louis STL from Pittsburgh PIT 

Some airlines let you change your travel dates without charging a fee. Use our ‘no change fee’ filter to see which flights to STL from PIT have this option.  

 

Travel with confidence when you book flights to St. Louis STL from Pittsburgh PIT with Travelocity 

We’ve secured fantastic deals with all the main airline carriers and it’s easy to compare, choose, and book with Travelocity. With 24/7 customer service and our free 'App', we’ll always keep you moving. 

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.