Find flights
Deals
Insights
When to book
FAQs & Tips
Direct Flights
Airlines

PIT - STL

Find cheap flights from Pittsburgh to St. Louis from $76

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Pittsburgh to St. Louis departing on 5/17. 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
0 bags
Sat 5/25
Sat 6/1

Search hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Pittsburgh to St. Louis, 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 Pittsburgh to St. Louis, as well as popular online travel agencies
In the last 7 days travelers have searched 44,979,812 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Pittsburgh to St. Louis 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 and deals for you by selecting your travel dates.
Choose your dates
7:33 am - 1:37 pmPIT-STL
7h 04m1 stop
10:34 am - 11:41 pmSTL-PIT
12h 07m1 stop
$106Spirit Airlines
Find Deal
Tue, May 14 - Tue, May 21
9:00 pm - 9:36 amPIT-STL
13h 36m1 stop
8:04 pm - 7:58 pmSTL-PIT
22h 54m1 stop
$126Frontier
Find Deal
Thu, May 16 - Sat, May 18
5:40 am - 1:37 pmPIT-STL
8h 57m1 stop
10:34 am - 7:22 amSTL-PIT
19h 48m3 stops
$132Spirit Airlines
Find Deal
Tue, May 14 - Tue, May 21
6:44 pm - 6:40 pmPIT-STL
24h 56m1 stop
8:04 pm - 12:41 pmSTL-PIT
15h 37m1 stop
Wed, May 1 - Wed, May 8
6:40 pm - 9:30 amPIT-STL
15h 50m1 stop
11:57 am - 8:32 pmSTL-PIT
7h 35m1 stop
Thu, Jun 20 - Tue, Jun 25
11:09 am - 3:32 pmPIT-STL
5h 23m1 stop
9:52 am - 9:00 pmSTL-PIT
10h 08m1 stop
$234American Airlines
Find Deal
Fri, May 24 - Sun, May 26
8:37 am - 4:17 pmPIT-STL
8h 40m1 stop
4:02 pm - 11:25 pmSTL-PIT
6h 23m1 stop
$250American Airlines
Find Deal
Sat, May 25 - Mon, May 27
6:00 am - 9:10 amPIT-STL
4h 10m1 stop
5:25 pm - 12:10 amSTL-PIT
5h 45m1 stop
$278Delta
Find Deal
Fri, Jun 7 - Sun, Jun 9
8:00 pm - 10:08 amPIT-STL
15h 08m2 stops
5:31 pm - 11:44 pmSTL-PIT
5h 13m1 stop
$451United Airlines
Find Deal
Sat, May 25 - Mon, May 27
8:50 am - 2:23 pmPIT-STL
6h 33m1 stop
11:10 am - 11:08 pmSTL-PIT
10h 58m2 stops
$647United Airlines
Find Deal
Sun, May 19 - Wed, May 22

Flights from Pittsburgh to St. Louis - Travel Insights & Trends

Get data-powered insights and trends into flights from Pittsburgh to St. Louis 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 Pittsburgh to St. Louis?

The average price of all flights from Pittsburgh to St. Louis clicked on KAYAK for each day over the last 12 months.
If your flying dates are flexible, you should consider flying to St. Louis on a Tuesday, as we generally find the cheapest rates on that day for this route. On the other hand, Friday is the most expensive day to fly from Pittsburgh to St. Louis. For your return ticket, we recommend flying on a Monday and avoiding Wednesdays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Pittsburgh to St. Louis, 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 Pittsburgh to St. Louis is April, where tickets cost $273 on average. On the other hand, the most expensive months are February and December, where the average cost of tickets is $359 and $350 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Pittsburgh to St. Louis, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Pittsburgh to St. Louis, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 69 days before departure.

Which airlines provide the cheapest flights from Pittsburgh to St. Louis?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting Pittsburgh to St. Louis were found on Spirit Airlines ($106) and Frontier ($126). Spirit Airlines proposed the cheapest one-way flight at $76.

How many flights are there between Pittsburgh and St. Louis per day?

There is a maximum of 1 nonstop flight a day that takes off from Pittsburgh and lands in St. Louis, with an average flight time of 1h 45m. The most common departure time is 9:00 am and most flights take off in the morning. Each week, there are 6 flights.

What’s the earliest departure time from Pittsburgh to St. Louis?

Early birds can take the earliest flight from Pittsburgh at 9:50 am and will be landing in St. Louis at 10:35 am.

What’s the latest departure time from Pittsburgh to St. Louis?

If you prefer to fly at night, the latest flight from Pittsburgh to St. Louis jets off at 4:05 pm and lands at 4:50 pm.

Good to know

Low season

January

High season

June

Cheapest flight

$76
Best time to beat the crowds but there is an average 8% increase in price.
Most popular time to fly with an average 4% increase in price.
Flight from Pittsburgh to St. Louis

When to book flights from Pittsburgh to St. Louis

Are your dates flexible? Find out the best times to travel from Pittsburgh to St. Louis 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 Pittsburgh to St. Louis

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

    In the last 3 days, the lowest price for a flight from Pittsburgh to St. Louis was $76 for a one-way ticket and $106 for a round-trip.

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

    No, a passport isn't needed to fly from Pittsburgh to St. Louis. However, local authorities might ask for an official ID.

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

    Pittsburgh airport is called Pittsburgh and the only airport in St. Louis is Lambert-St Louis.

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

    We unfortunately don’t have that data for this specific route.

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

    You can catch a nonstop flight from Pittsburgh to St. Louis on on Monday, Tuesday, Wednesday, Thursday, Friday, and Sunday.

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

    The two airlines most popular with KAYAK users for flights from Pittsburgh to St. Louis are Delta and United Airlines. With an average price for the route of $343 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $465 and an overall rating of 7.4.

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

    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 Pittsburgh to St. Louis.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Pittsburgh 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 Pittsburgh to St. Louis?

    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 St. Louis with an airline and back to Pittsburgh with another airline. Booking your flights between Pittsburgh and STL 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 Pittsburgh to St. Louis?

    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 St. Louis from Pittsburgh up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Prefer to fly non-stop from Pittsburgh to St. Louis?

Find which airlines fly direct from Pittsburgh to Lambert-St Louis, which days they fly and book direct flights.

Nonstop departures

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

Nonstop returns

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
See more direct flights

Top 4 airlines serving from Pittsburgh to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Pittsburgh to St. Louis. 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 Pittsburgh to St. Louis? 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.
8.0
DeltaOverall score based on 10975 reviews
8.6crew
7.4food
7.9comfort
8.0entertainment
8.2boarding
Airline reviews

Delta is one of the best airlines I have flown

10.0 ExcellentKellie, Apr 2024ANC - SEA
Read more about Delta reviews

Delta is one of the best airlines I have flown

Made the Atlanta to Pittsburgh trip many times, with Delta no issues

I always fly with Delta. My friends tell me their horror stories of flying with other airlines. I just smile and say, “You should fly Delta”

I'm a larger, athletic guy (6'2", 260lbs powerlifter) and I found the seats incredibly uncomfortable with minimal leg room, especially in a window seat. Now, I full understand that being smaller may change my view but even if I was 80lbs less, my legs would be the same size and I was sandwiched between my seat and the seat in front of me.

Horrible. This was not first class. This was a connecting flight whi h was late. My original flight never came. I hated the fact that delta gave me a connecting flight from New York to Orlando Florida. No meals and the television screens were not working. There wasn't even any power to charge your phones. This is NOT FIRST CLASS DELTA!!! Do better next time!

This flight was ridiculous. I had to have a connecting flight from New York to orlando Florida??? The flight left late and because it was a short flight there was no first class amenities. I had one alcohol drink. The flight crew was fine, but it sure did not feel like first class. Delta to me dropped the ball by giving me a connecting flight. By the time we got to Raleigh we would have missed the next flight. Lucky for me the flight never came so now I was stuck waiting for a later flight that came in late also.

Our flight was delayed in Atlanta. The staff could have gave us an explanation for the delay and how long it would be.

I liked the ease of checking in, luggage check in, wheel chair assistance, boarding and flight.

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive. I also upgraded to comfort + , I didn’t feel it was worth it. There was no benefit

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive.

So so. Terrible aircraft choice for that leg of the flight.

Due to one crew member not showing up to work, our flight was significantly delayed causing us to miss our connecting flight in Houston to Mississippi causing us to be delayed by more than 6 hours and missing our event all together. Very disappointing. All because ONE crew member called in sick. United did grant us a $15 meal voucher, which was a small but appreciated concession that I wasn’t able to use because I ordered my lunch and paid for it before applying the concession, and the staff said it was too late to use it. Ugh! We also had a TWO delay coming back from Mississippi, but that was on American Airlines and it was due to weather, so not their fault. Anyway, not at all impressed with United’s handling of our flight and the HUGE disappointment of missing our important family event for our 90 year old mother. All that money and all that stress and emotions for nothing. Having to wait the hour to bring an employee from LAX seemed like something that should not have happened. Why don’t you have a local back-up? Santa Ana is not a little airport in a rural area.

Flight delayed from Cape Town to Washington then got diverted to miami and in miami we had to fend for ourselves , im still trying to get to Shreveport now

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

I just wrote a text which was supposed to be for the flight from Denver to spokane not Frankfurt to Denver.

On time every leg of the journey and exceptional staff at counter, gate, and on board. I haven’t travelled in US for a long time and was genuinely surprised how pleasant this was.

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

flight delays, staff only communicating when pushed, food service lasting a grand total of 7 minutes, stuck in seat from 45mins into flight until landing

Crew was great and did their best to make us comfortable and captain came out at the beginning to announce why the flight was delayed, weather situation up ahead, and kept us updated throughout the flight.

they made me check my carryon. There was space in the overhead bins.

It was a good flight. Of course it was full, but it went well.

Same basket of unhealthy prepackaged snacks (junk food) which was depleted by the time it got to my row!!

Flight delayed, boarding time kept changing, not good. Nee firm information given each time.

We experience delays on departure and connecting flights resulting in 14 hour to our next departure. We were accommodated with a night's stay but was only provided a 12 dollar meals accommodation. The airlines rules state.at least 50 dollars. In any case, it can not make up for the whole day missed on our vacation in Sydney Australia.

Flight from PHL to PHX arrived 50 minutes early and a gate was available. First class flight attendant Stephanie was very friendly and polite. Sanitizing wipes should be provided with meals in addition to refresher towels.

flight delayed so missed connection and this had to rebook for next day

Flight departed PHL one hour late due to late arrival of aircraft. On board services were okay. First class menu does not offer any new items; same desserts (cheese & crackers or Mango sorbet). At least there were no credit card promotions during the flight.

After sitting on plane for 7+ hours, flight was canceled. And to makes matters worse, my suitcase is in baggage hell!

Terrible Ticketing and Check in process. I learned that AA unilaterally cancelled my premium seating from PHL to CLT and from CLT to JAN. They did, however, refund my money, but my seating was subsequently severely downgraded. They didn’t have a seat for my unless I paid for it! Not cool! Consequently, Check-in took 45 min. AA is usually great, but this was my worst experience with AA ever. Appalling they they arbitrarily cancel my seats threatening loss of flight if I didn’t pay for a seat!!!! -John

We liked quick boarding and on time departure. Seats were very uncomfortable.

Not much seat room, but that was unexpected. But the seat headrest was very uncomfortable.

First the good, everyone was friendly and efficient. Flight was smooth and plane was very clean and new. Now the bad, seats have almost no padding on your behind. I was in exit row so I had tons of leg room for a 6' 2" bean pole with long legs. Everything was extra - water, soda, snacks everything besides oxygen. Ya get what you pay for, and my flight was cheap as you could ever want it, so no worries.

First the good, everyone was friendly and efficient. Flight was smooth and plane was very clean and new. Now the bad, seats have almost no padding on your behind. I was in exit row so I had tons of leg room for a 6' 2" bean pole with long legs. Everything was extra - water, soda, snacks everything besides oxygen. Ya get what you pay for, and my flight was cheap as you could ever want it, so no worries. They dont really bother you about carry-on size, I brought a descent sized backpack and they didnt even check.

Spirit canceled the flight in March and never notified me!

Seats suck, not enough room, overcrowded planes, hectic situation all together.

Pretty good. Would’ve been excellent if we would have left on time and the crew wasn’t late.

I do not like the customer service, I had an emergency and needed to cancel a pet reservation right after I had booked it and they would not do anything but issue a credit. I haven't flown in years as I have 7 kids and don't have spare time. I want my $125 back on my card please

Spirit airline tries to screw you at every opportunity. Spirit wanted 65$ for an extra pound in the suitcase Made me open the suitcase at the counter to remove 1 pound. Staff very cold and rude Will never fly spirit again and will recommend same to family and friends

Delayed..4 times...completely disorganized boarding. After 5 hours they scrambled to move ppl off plane bc they overbooked. Then they didn't have a cabin crew. WiFi on plane didn't work. Zero amenities. Once we boarded we sat on tarmac for an hour. Explore all alternate options including purchasing a pair of hiking boots and walking to your destination instead of flying spirit.

what I like about Spirit is that the pilot and crew are good communicators. The plane itself - well, its a budget airline and you get what is expected, But I generally just feel safer, somehow, when I know more about what is going on - and Spirit has always done a good job of telling me what is going on: why the delay, why the turbulence, why this and that... and that means a lot to me.

Book cheap flights from Pittsburgh to St. Louis

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Pittsburgh to St. Louis found on KAYAK in the last 72 hours.
5/17Fri
1 stopSpirit Airlines
14h 11mPIT-STL
$76
5/28Tue
1 stopFrontier
12h 53mPIT-STL
$79
5/16Thu
1 stopFrontier
13h 36mPIT-STL
$81
5/11Sat
1 stopSpirit Airlines
5h 58mPIT-STL
$88
5/15Wed
3 stops
30h 08mPIT-STL
$148
5/28Tue
3 stops
11h 25mPIT-STL
$165
5/28Tue
2 stopsUnited Airlines
20h 41mPIT-STL
$187
5/26Sun
2 stopsUnited Airlines
10h 31mPIT-STL
$200
5/17Fri
2 stopsAmerican Airlines
10h 04mPIT-STL
$281
4/28Sun
2 stopsAmerican Airlines
9h 41mPIT-STL
$294

Search by stops

Search by airline

Search by price

Last minute flights from Pittsburgh to St. Louis

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Pittsburgh to St. Louis that are departing in the next 10 days.
4/28Sun
multi-stopFrontier
22h 11mPIT-STL
5/4Sat
multi-stopFrontier
14h 32mSTL-PIT
$210
4/28Sun
multi-stopFrontier
22h 11mPIT-STL
4/29Mon
multi-stopFrontier
15h 37mSTL-PIT
$277
4/27Sat
multi-stop
5h 55mPIT-STL
4/29Mon
multi-stop
15h 37mSTL-PIT
$309
4/27Sat
multi-stopSpirit Airlines
5h 55mPIT-STL
4/28Sun
multi-stopSpirit Airlines
28h 15mSTL-PIT
$354
4/27Sat
multi-stopSpirit Airlines
5h 55mPIT-STL
4/28Sun
multi-stopSpirit Airlines
28h 15mSTL-PIT
$360
4/27Sat
multi-stopSpirit Airlines
5h 55mPIT-STL
4/28Sun
multi-stopSpirit Airlines
25h 34mSTL-PIT
$402
4/28Sun
multi-stop
41h 40mPIT-STL
5/4Sat
multi-stop
5h 24mSTL-PIT
$435
4/26Fri
multi-stopUnited Airlines
4h 14mPIT-STL
4/29Mon
multi-stopUnited Airlines
5h 45mSTL-PIT
$556
4/28Sun
multi-stopAmerican Airlines
6h 13mPIT-STL
4/29Mon
multi-stopAmerican Airlines
9h 22mSTL-PIT
$580
4/27Sat
multi-stopAmerican Airlines
8h 19mPIT-STL
4/28Sun
multi-stopAmerican Airlines
6h 26mSTL-PIT
$581

Search by stops

Search by airline

Search by price

Pittsburgh - St. Louis Flights

Departure:

Pittsburgh (PIT)United States

Destination:

St. Louis (STL)United States

Return flight deals:

St. Louis - Pittsburgh

Cabin classes:

Compare transportation modes for Pittsburgh to St. Louis

Average priceAverage duration
Flights4h 10m
Buses$20914h 05m