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STL - PIT

Find cheap flights from St. Louis to Pittsburgh from $89

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 6/10. 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 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
In the last 7 days travelers have searched 44,979,812 times on KAYAK, and here is why:

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Cheap flight deals 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 and deals for you by selecting your travel dates.
Choose your dates
8:04 pm - 12:41 pmSTL-PIT
15h 37m1 stop
12:36 pm - 9:47 amPIT-STL
22h 11m1 stop
$108Frontier
Find Deal
Wed, May 8 - Sun, May 12
2:35 pm - 12:45 amSTL-PIT
9h 10m1 stop
8:06 am - 12:20 pmPIT-STL
5h 14m1 stop
Tue, May 7 - Fri, May 31
2:35 pm - 12:45 amSTL-PIT
9h 10m1 stop
7:41 pm - 6:40 pmPIT-STL
23h 59m2 stops
$168Spirit Airlines
Find Deal
Tue, May 7 - Wed, May 8
2:35 pm - 12:45 amSTL-PIT
9h 10m1 stop
7:41 pm - 5:29 pmPIT-STL
22h 48m1 stop
$187Spirit Airlines
Find Deal
Tue, May 7 - Wed, May 8
6:26 am - 3:42 pmSTL-PIT
8h 16m1 stop
12:01 pm - 9:35 pmPIT-STL
10h 34m1 stop
$202American Airlines
Find Deal
Mon, Aug 26 - Wed, Aug 28
5:04 am - 1:03 pmSTL-PIT
6h 59m1 stop
8:37 am - 4:17 pmPIT-STL
8h 40m1 stop
$205American Airlines
Find Deal
Wed, May 22 - Wed, May 29
6:00 am - 11:59 amSTL-PIT
4h 59m1 stop
6:05 am - 9:19 amPIT-STL
4h 14m1 stop
$232Delta
Find Deal
Tue, May 14 - Wed, May 15
6:00 am - 11:59 amSTL-PIT
4h 59m1 stop
6:05 am - 9:19 amPIT-STL
4h 14m1 stop
$275Delta
Find Deal
Tue, May 14 - Wed, May 15
9:30 am - 4:57 pmSTL-PIT
6h 27m1 stop
8:10 pm - 10:07 amPIT-STL
14h 57m2 stops
$464United Airlines
Find Deal
Wed, Sep 11 - Wed, Sep 11
1:37 pm - 9:26 amSTL-PIT
18h 49m2 stops
8:50 am - 2:23 pmPIT-STL
6h 33m1 stop
$533United Airlines
Find Deal
Wed, May 8 - Sun, May 12

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

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 flights from St. Louis to Pittsburgh clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from St. Louis to Pittsburgh, look for departures on Mondays and avoid leaving on a Wednesday, as it's usually the priciest day. When flying back from Pittsburgh, Tuesday is the cheapest day to fly and Friday is the most expensive.

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 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 January, where tickets cost $266 on average. On the other hand, the most expensive months are December and June, where the average cost of tickets is $440 and $364 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for 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 month.
To get a below average price on the flight from St. Louis to Pittsburgh, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 63 days before departure.

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

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, Frontier offered the best one-way deal for that route, at $89. KAYAK users also found St. Louis to Pittsburgh round-trip flights on Frontier from $108 and on Spirit Airlines from $168.

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

Each day, there are between 1 and 2 nonstop flights that take off from St. Louis and land in Pittsburgh, with an average flight time of 1h 35m. The most common departure time is 4:00 pm and most flights take off in the afternoon. Each week, there are 8 flights. The most frequent day of departure is Sunday, when 25% of all weekly flights depart. The fewest flights depart on a Wednesday.

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

Early birds can take the earliest flight from St. Louis at 11:50 am and will be landing in Pittsburgh at 2:25 pm.

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

If you prefer to fly at night, the latest flight from St. Louis to Pittsburgh jets off at 5:50 pm and lands at 8:30 pm.

Good to know

Low season

January

High season

June

Cheapest flight

$89
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly with an average 14% 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 $89 for a one-way ticket and $108 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 aircraft models fly most regularly from St. Louis to Pittsburgh?

    We unfortunately don’t have that data for this specific 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, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Pittsburgh are Delta and United Airlines. With an average price for the route of $307 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 $353 and an overall rating of 7.4.

  • 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.

See more FAQs

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

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

Nonstop 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

Nonstop 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
See more direct flights

Top 4 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.
8.0
DeltaOverall score based on 10975 reviews
7.9comfort
8.6crew
8.0entertainment
7.4food
8.2boarding
Airline reviews

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

10.0 ExcellentAnonymous, Apr 2024ATL - PIT
Read more about Delta reviews

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.

They did a fine job. Can't wait to use Delta in the future.

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.

The flight was great but board was a nightmare. The gate was changed 4 times during the layover period

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

American Airlines continues to price it can provide the least comfortable passenger experience in the air. This legacy carrier rivals the budgets for both terrible seats and inadequate amenities. I am a 5’7” woman who is not wider than a coach seat (even on these narrow bodied aircraft). My 3.5 hour flight was terribly uncomfortable because the leg room is inadequate (my knees hit the seat on front of me even when it was not reclined); the seat barely reclines; and the foam padding is worn thin to the extent one can feel the metal supports of the seat. Add to this the fact that the aisle is super narrow, so that the drink cart literally scrapes the arm rest of the aisle seat. It’s basically torture.

Food options were limited which is absolutely embarrassing for a Flight of this size The staff did not come around as much and I am not accustomed to such poor service from American Airlines Drinks I believe were limited to soda and water

Was as expected. Good leg room on planes - much appreciated.

I don’t think the flight attendants are happy. They do not seem to be friendly or welcoming.

Smaller, regional aircraft limits amount of overhead luggage space. At least there were jetways at both BNA and PHL. First class food service was minimal with the usual assortment of packaged snacks (nothing creative) and no handiwipes. American tries to turn around aircraft too quickly without enough time to clean the planes. WIFI service did not include TV programming.

6 plus hour delay with no explanation. No wheelchairs to transport us on arrival. Very disappointed.

Food choice is limited, entertainment better than average, seat leg room terrible

While I received notice that AA 478 was delayed, the flight departed PHX and arrived PHL more than two hours late. The first class cabin service was mediocre; there were no pre-departure beverages offered; there were no warm mixed nuts served with cocktails; there was no personal greeting to me as an Executive Platinum member by the first class flight attendant. While the flight operated safely, its arrival at 0219 in the morning in PHL ended a very long day. I do not feel that American provided first class service.

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.

I paid just under 200 for flight and luggage, then paid 200 to change the flight, then paid 100 for a carry on. Then the cancelled the flight. Of the 500 I spent they refunded 250. I bought a delta flight for 270 never flew with spirit, but spirit kept 250, not even refunding the 100 for the carry on though they cancelled the flight (for weather on a day with only a slight rain ).

Book cheap flights from St. Louis to Pittsburgh

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Pittsburgh found on KAYAK in the last 72 hours.
6/10Mon
1 stopFrontier
7h 45mSTL-PIT
$89
7/23Tue
1 stopAmerican Airlines
9h 26mSTL-PIT
$97
7/25Thu
1 stopDelta
4h 11mSTL-PIT
$139
5/24Fri
2 stops
23h 08mSTL-PIT
$195
5/24Fri
1 stopAmerican Airlines
6h 43mSTL-PIT
$198
5/24Fri
3 stops
26h 19mSTL-PIT
$201
6/10Mon
2 stopsSpirit Airlines
19h 07mSTL-PIT
$211
9/11Wed
2 stopsUnited Airlines
11h 03mSTL-PIT
$238
7/25Thu
2 stopsSpirit Airlines
23h 36mSTL-PIT
$274
7/23Tue
2 stopsUnited Airlines
15h 05mSTL-PIT
$319

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Last minute flights from St. Louis to Pittsburgh

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 St. Louis to Pittsburgh that are departing in the next 10 days.
4/26Fri
multi-stopUnited Airlines
5h 29mSTL-PIT
4/28Sun
multi-stopUnited Airlines
4h 14mPIT-STL
$556

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St. Louis - Pittsburgh Flights

Departure:

St. Louis (STL)United States

Destination:

Pittsburgh (PIT)United States

Return flight deals:

Pittsburgh - St. Louis

Cabin classes: