STL - PIT

$83 Find Cheap Flights from St. Louis to Pittsburgh

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Pittsburgh departing on 1/14. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Pittsburgh

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Pittsburgh, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Pittsburgh, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$170
Overall average: $304
Multiple Airlines
Tue 1/13Tue 1/20
STL - PIT • 1 stop
Cheapest non-stop
$321
Typical prices: $304-$501
Southwest
Thu 1/29Thu 2/5
STL - PIT • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
Avoid peak hours at STL to reduce wait times.
Use the 28X Airport Flyer for a budget ride to downtown.
Expert advice
Expert advice
Expert advice
Expert advice
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 49% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
May
Cheapest • 18% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Pittsburgh!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from St. Louis to Pittsburgh (STL-PIT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Pittsburgh that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Tue, Jan 13 - Tue, Jan 20
Multiple Airlines Logo
5:11 pm - 4:45 pm
STL
-
PIT
22h 34m1 stop
Multiple Airlines Logo
5:50 pm - 11:33 pm
PIT
-
STL
30h 43m2 stops
$170Multiple Airlines
Thu, Jan 8 - Sat, Jan 10
American Airlines Logo
3:54 pm - 11:29 pm
STL
-
PIT
6h 35m1 stop
American Airlines Logo
4:00 pm - 10:44 pm
PIT
-
STL
7h 44m1 stop
$191American Airlines
Thu, Jan 8 - Sat, Jan 10
Multiple Airlines Logo
3:43 pm - 9:40 am
STL
-
PIT
16h 57m2 stops
Multiple Airlines Logo
5:32 am - 10:33 pm
PIT
-
STL
18h 01m1 stop
$204Multiple Airlines
Thu, Jan 8 - Sun, Jan 11
Multiple Airlines Logo
3:43 pm - 9:40 am
STL
-
PIT
16h 57m2 stops
Multiple Airlines Logo
5:32 am - 8:05 am
PIT
-
STL
27h 33m1 stop
$215Multiple Airlines
Thu, Jan 8 - Sun, Jan 11
Multiple Airlines Logo
5:11 pm - 4:45 pm
STL
-
PIT
22h 34m1 stop
Multiple Airlines Logo
10:45 am - 8:05 am
PIT
-
STL
22h 20m1 stop
$219Multiple Airlines
Fri, Jan 9 - Mon, Jan 12
Multiple Airlines Logo
8:35 am - 11:07 pm
STL
-
PIT
13h 32m1 stop
Multiple Airlines Logo
5:50 pm - 6:51 am
PIT
-
STL
38h 01m2 stops
$234Multiple Airlines
Thu, Jan 8 - Mon, Jan 12
United Airlines Logo
9:57 am - 4:44 pm
STL
-
PIT
5h 47m1 stop
United Airlines Logo
5:46 pm - 10:58 pm
PIT
-
STL
6h 12m1 stop
$261United Airlines
Thu, Jan 29 - Thu, Feb 5
Multiple Airlines Logo
5:42 pm - 4:45 pm
STL
-
PIT
22h 03m1 stop
Multiple Airlines Logo
5:32 am - 10:23 am
PIT
-
STL
29h 51m1 stop
$280Multiple Airlines
Fri, Jan 9 - Mon, Jan 12
American Airlines Logo
9:33 am - 5:12 pm
STL
-
PIT
6h 39m1 stop
American Airlines Logo
5:42 pm - 10:44 pm
PIT
-
STL
6h 02m1 stop
$282American Airlines
Thu, Jan 29 - Thu, Feb 5
Multiple Airlines Logo
5:42 pm - 4:45 pm
STL
-
PIT
22h 03m1 stop
Multiple Airlines Logo
5:50 pm - 10:23 am
PIT
-
STL
17h 33m2 stops
$290Multiple Airlines
Booking Insights

KAYAK's insights & trends for St. Louis to Pittsburgh flights

Get data-powered insights and trends into flights from St. Louis to Pittsburgh to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from St. Louis to Pittsburgh?

The average price of all round-trip flights from St. Louis to Pittsburgh clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Pittsburgh on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from St. Louis to Pittsburgh. For your return ticket, we recommend flying on a Thursday and avoiding Mondays for the best deals.

What is the cheapest month to fly from St. Louis to Pittsburgh?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Pittsburgh, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Pittsburgh is May, where tickets cost $294 (return) on average. On the other hand, the most expensive months are October and February, where the average cost of round-trip tickets is $433 and $415 respectively.

Can I save money by flying with a layover from St. Louis to Pittsburgh?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $326, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from St. Louis to Pittsburgh?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from St. Louis to Pittsburgh, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from St. Louis to Pittsburgh, you should book around 4 weeks before departure, which saves you about 49% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Expert advice

Expert advice for your flight from St. Louis to Pittsburgh

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airports
STL

Avoid peak hours at STL to minimize wait times, especially in Terminal 2, which can get crowded due to Southwest's popularity.

PIT

Use the 28X Airport Flyer bus for a budget-friendly ride to downtown Pittsburgh, taking about 45 minutes from PIT.

Our travel experts
Yulia Denisyuk

Yulia Denisyuk

Expert on STL

Yulia Denisyuk

Yulia Denisyuk

Yulia is a freelance journalist who’s dispatched from 90+ countries. Her work focuses on cultures, adventure trips and air travel, appearing in NatGeo, NYT, CNTraveler, and more. For past assignments, she’s stayed with nomads in Mongolia and learned the art of Imigongo in Rwanda. She’s based in Chicago; in winter she often questions that decision.

Read more
Matt Meltzer

Matt Meltzer

Expert on PIT

Matt Meltzer

Matt Meltzer

Matt Meltzer has been a travel writer for over a decade, covering U.S. domestic locations and hotels for Thrillist, Fifty Grande, Matador Network, Conde Nast Traveler, and other top publications. He's won multiple travel journalism awards from the Society of American Travel Writers and North American Travel Journalists Association, and currently resides in South Florida.

Read more

Good to know

Low seasonJanuary
Cheapest flight$83
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from St. Louis to Pittsburgh

When to book flights from St. Louis to Pittsburgh

Are your dates flexible? Find out the best times to travel from St. Louis to Pittsburgh based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Pittsburgh

  • What is the cheapest flight from St. Louis to Pittsburgh?

    In the last 3 days, the lowest price for a flight from St. Louis to Pittsburgh was $83 for a one-way ticket and $170 for a round-trip.

  • Do I need a passport to fly between St. Louis and Pittsburgh?

    No

  • Which airports will I be using when flying from St. Louis to Pittsburgh?

    When flying out of St. Louis you will be using Lambert-St Louis. You will be landing at Pittsburgh, also known as Pittsburgh.

  • Which airlines offer Wi-Fi service onboard planes from St. Louis to Pittsburgh?

    American Airlines, and Delta offer inflight Wi-Fi service on the St. Louis to Pittsburgh flight route.

  • Which aircraft models fly most regularly from St. Louis to Pittsburgh?

    The Boeing 737-700 Passenger/BBJ1 (winglets) is the aircraft model that flies most regularly on the St. Louis to Pittsburgh flight route.

  • Which airline alliances offer flights from St. Louis to Pittsburgh?

    SkyTeam, and oneworld are the airline alliances operating flights between St. Louis and Pittsburgh, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from St. Louis to Pittsburgh?

    There are nonstop flights from St. Louis to Pittsburgh on a daily basis.

  • Which is the best airline for flights from St. Louis to Pittsburgh, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from St. Louis to Pittsburgh are Southwest and Delta. With an average price for the route of $365 and an overall rating of 7.9, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $348 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from St. Louis to Pittsburgh?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Pittsburgh.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Pittsburgh?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Pittsburgh from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Pittsburgh?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Pittsburgh with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and PIT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Pittsburgh?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Pittsburgh from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from St. Louis to Pittsburgh

  • Looking for a cheap flight? 25% of our users found flights on this route for $393 or less one-way.

Prefer to fly direct from St. Louis to Pittsburgh?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Lambert-St Louis to Pittsburgh.
Find which airlines fly direct from Lambert-St Louis Airport to Pittsburgh Airport, which days they fly and book direct flights.

Direct departures

Lambert-St Louis to Pittsburgh

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Direct returns

Pittsburgh to Lambert-St Louis

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Reviews of the top 3 airlines serving from St. Louis to Pittsburgh

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Pittsburgh. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Pittsburgh? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
SouthwestOverall score based on 4250 reviews
8.1Boarding
7.0Food
8.0Comfort
7.5Entertainment
8.6Crew
Airline reviews

They sent a notice that they were boarding an hour early. We had to leave the club and run to the gate. They said sorry, that came from corporate and was a mistake. They did not have enough seating because the flight before it had not taken off on time. They moved our gate and delayed it for an hour.

2.0 MediocreRobert, Dec 2025
LAS - TPA
Read more Southwest reviews

They sent a notice that they were boarding an hour early. We had to leave the club and run to the gate. They said sorry, that came from corporate and was a mistake. They did not have enough seating because the flight before it had not taken off on time. They moved our gate and delayed it for an hour.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.

Airline travel is always too cramped to really be pleasant, but the cabin crew on this flight did a pretty good job of making up for it by putting on some music during boarding and sprinkling a few funny remarks into the safety briefing and announcements, and just generally being friendly and helpful. It definitely reminded me of why I prefer the in-flight experience on Southwest!

No delays and arrived to destination 30 min early. Staff was super friendly.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

It was rough. The staff was unprofessional, the choice of on board drinks terrible, it was cramped in space at every airport, they always ran out of overhead bin space so they pressured people to check bags for free or we couldn’t leave on the plane— so I did check my bag to help, and they nearly lost my bag. My bag did not arrive on the luggage belt, another man on my flight and I had to waste our time going to the baggage office to search for our bags. I would only fly southwest again if it was my last choice. Also, my flights were consistently delayed over and over again— at one point they straight up told us we were waiting for the pilot to arrive.

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

Had to get off plane from prior flight even though I had to reboard same plane to continue to my final destination.

I noticed that the planes seem to be outdated. There was no entertainment per se. Also, the waiting area did not have any working electrical outlets

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

The food is terrible. The staff is wonderful. Comfort is good.

Left on time, a bit delayed due to headwinds most of the trip.

I fly Delta all the time, have Platinum Medallion status. But this route seems to have major problems with delays and seems to never leave on time! Have only taken it twice in the last two weeks, and each time it had delays of more than 1 hour... very disappointed!!!!

Good seats in Main cabin, excellent service and excellent landing

My flight was cancelled with no explanation after I had already cleared security. I was given 4 options to rebook, only one being non-stop like I had paid for. I grabbed it. It was 4 plus hours later and then took off even later. Biggest complaint is that I booked early and had an aisle seat. They gave me a "window" seat in front of the exit row, so the seat did not decline. I weigh all of 103 #s and it was tight for me! For what I paid, I feel I was kind of ripped off. I think they should have given me the empty comfort seat for the inconvenience. There was no apology nor any explanation as to why the flight was cancelled. My guess is it benefitted Delta in some way.

Very smooth, on-time, and pleasantly uneventful flight. The team at the gate and on board were professional and genuinely courteous. The pilot kept us well updated throughout, and both takeoff and landing were steady and enjoyable without any drama. Just a good, solid flight. Thank you! 💗

Staff was exceptional! Everyone was kind, professional and friendly making the trip very pleasant. Thank you!

the trip to madrid was uncomfortable with my legs touching the seat in front of me

The Phildalphia to Allentown portion was a BUS, not a plane. All was as expected.

Very crowded flight but what can you expect these days?? Crew was accommodating.

The seats in economy were appeared to be quite thin and lack sufficient cushioning to be comfortable. Perhaps it was my seating position but the plane seemed notably load.

Internet was a bit expensive and did not work ask that week otherwise a good flight

The flight had a delay that made me being in a real rush to take the second flight. The delay was almost for 2 hours. They moved us from gate to gate in 4 times. Once I arrived to Philadelphia, I got to run thorough all the airport, as the train was already closed by that time. So I got sick with asthma for all the running I had to do. And I was the last one to board, when it was almost closed. So irresponsable with the people

Above and beyond effort from this crew in a tough situation. So helpful and understanding. Thank you!

The plane was probably full boarding was easy. We were able to check our carry-on luggage for free. It was a return flight through Philly to LA. Never saw a stewardess do a demonstration of emergency Procedures. I think my flight was pretty full

Overall, a good experience. The food, however, was subpar. The breakfast was a joke.

I was late from Jacksonville, FL but the limited interaction I had with the Philly crew was great.

Everything you need to know for your flight from St. Louis to Pittsburgh

Information on your arrival and departure airports