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PIT - STL

$66 Find cheap flights from Pittsburgh to St. Louis

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 9/11. 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
Wed 7/17
Wed 7/24

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 44,229,043 times on KAYAK, and here is why:

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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
8:50 pm - 9:37 amPIT-STL
13h 47m1 stop
8:00 pm - 7:39 pmSTL-PIT
22h 39m1 stop
$139Frontier
Find Deal
Thu, Sep 12 - Mon, Sep 16
8:13 am - 2:42 pmPIT-STL
7h 29m1 stop
8:00 pm - 7:50 pmSTL-PIT
22h 50m1 stop
$140Frontier
Find Deal
Wed, Sep 11 - Wed, Sep 11
12:09 pm - 9:25 amPIT-STL
22h 16m1 stop
11:26 am - 11:07 pmSTL-PIT
10h 41m1 stop
Tue, Jul 16 - Tue, Jul 23
11:58 am - 4:20 pmPIT-STL
29h 22m1 stop
5:18 pm - 11:08 amSTL-PIT
16h 50m1 stop
$181Spirit Airlines
Find Deal
Wed, Aug 21 - Sun, Aug 25
9:50 am - 7:07 amPIT-STL
22h 17m2 stops
7:57 am - 5:33 pmSTL-PIT
8h 36m1 stop
$191Spirit Airlines
Find Deal
Sun, Sep 15 - Wed, Sep 18
6:29 am - 2:26 pmPIT-STL
8h 57m1 stop
6:04 am - 3:20 pmSTL-PIT
8h 16m1 stop
$243American Airlines
Find Deal
Wed, Jul 3 - Wed, Jul 10
10:55 am - 4:10 pmPIT-STL
6h 15m1 stop
9:44 am - 8:52 pmSTL-PIT
10h 08m1 stop
$256American Airlines
Find Deal
Fri, Aug 30 - Sun, Sep 1
7:00 am - 2:18 pmPIT-STL
8h 18m1 stop
11:25 am - 11:15 pmSTL-PIT
10h 50m2 stops
$463United Airlines
Find Deal
Wed, Jul 3 - Wed, Jul 10
10:35 am - 1:26 pmPIT-STL
3h 51m1 stop
7:06 pm - 12:10 amSTL-PIT
4h 04m1 stop
$468Delta
Find Deal
Thu, Jun 27 - Thu, Jun 27
7:01 am - 11:38 amPIT-STL
5h 37m1 stop
12:43 pm - 6:24 pmSTL-PIT
4h 41m1 stop
$518Delta
Find Deal
Thu, Jul 11 - Sun, Jul 14

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, Sunday is the most expensive day to fly from Pittsburgh to St. Louis. For your return ticket, we recommend flying on a Monday and avoiding Fridays 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 December, where tickets cost $273 on average. On the other hand, the most expensive months are March and June, where the average cost of tickets is $382 and $379 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 83 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 Frontier ($139) and Spirit Airlines ($181). Frontier proposed the cheapest one-way flight at $66.

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

Each day, there are between 1 and 2 nonstop flights that take off from Pittsburgh and land in St. Louis, with an average flight time of 1h 41m. The most common departure time is 8:00 am and most flights take off in the morning. Each week, there are 11 flights. The most frequent day of departure is Monday, when 18% of all weekly flights depart. The fewest flights depart on a Thursday.

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

Early birds can take the earliest flight from Pittsburgh at 7:40 am and will be landing in St. Louis at 8:20 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 8:20 pm and lands at 9:05 pm.

Good to know

Low season

December

High season

September

Cheapest flight

$66
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly and prices are also 16% lower on average.
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 $66 for a one-way ticket and $139 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?

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

  • 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 $361 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 $414 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 10000 reviews
8.0Entertainment
8.2Boarding
8.6Crew
7.9Comfort
7.4Food
Airline reviews

Flight was 3 hours late so only had an OK experience

6.0 GoodMelissa, Jun 2024RDU - DTW
Read more about Delta reviews

Flight was 3 hours late so only had an OK experience

It was very cold because the air conditioner was on high power, and my son got sick.

3 hours late and all they have is was a $12 meal voucher. That’s not even enough to cover fast food.

Among the poorest flights I’ve had with Delta in a while. Entertainment system failed completely on a 7.5 hr flight. Crew seemed distracted and not the normal friendly crew. Flight overbooked it seemed… very crowded.

If I can, I always fly Delta. I’ve found their service to always be reliable and pleasant.

You could have not cancelled the flight (AA, which I will be flying from now on) left for BOS despite the fictitious weather issues (that no one in my Boston family could see). You could have rebooked my direct flight to another direct flight instead of sending me though JFK, the worst US airport after O’Hara You could have rebooked me on a Main Cabin seat (like the one I paid for in my original ticket instead of putting me a the last row on JFK->BOS leg, pocketing the difference in ticket price But I do not really care whether you will ever do that in a future because in a future neither I nor anyone from my company (unless they pay out of pocket) nor an of my clients and partners (if they heed my advice) will ever be caught dead on any of Delta flights

Really bad baggage handling. Had my Rimowa bag badly damaged at the latches.

It was pretty good I was worried with the short Layover that I might not catch my connection but the gate was there

It was good until there was a 3 hour delay because there was not any pilots to fly the plane.

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

Nothing they cancelled my connection and couldn't get me on a flight for 3 more days

Was 4 1/2 hours delayed. No food options, poor entertainment and cramped seats made worse by people in front reclining while we could not as in back row.

The baggage handlers broke the handle on my bag that they put under the plane that I checked on the jetway. They traded it out for a less quality bag in Tulsa. But, they said they would try to fix it. Bologna! There was no fixing that bag handle. Someone didn’t care how they treated the bag.

The entertainment wasn’t playing in the app or online.

It is a modern tragedy that any airline expects you to travel for 14 hours in such discomfort and that the only way to add comfort is exorbitant prices. I was in pain by the time we landed. Shameful.

Original plane sidelined. Had to wait an hour for replacement.

Crew was very cooperative and professional. Passenger's first checked in bag should be free.

No real agent onsite helping you for missing luggage there. Not like the other airline next to UA desk, they have staff attending in their desk assisting answer/helping luggage issue, even after midnight.

Horrible, the flights kept delaying, so it is obvious that we won't be able to make it to the next connection. No easier/real agent on site to help you figure this out. UA agent on other counters refuse to assist you and direct us to use the QR code/call customer service. So inefficient and poor. While technology seems convenient, but it's not the best interest/experience for customers need help while there is active issue need assistance.

After the morning frenzy of 35 min wait through CLT security at 4;30 AM, it was nice to have a smooth pleasant boarding experience. This 6:30 AM flight was not full. We were able to get seated swiftly and took off promptly. Nice touch they distributed the old fashioned headsets with 8 mm jacks. Snacks were decent and arrival was uneventful.

This flight was awful all around. Delays on the tarmac at PHL before takeoff and at the tarmac in Chicago caused me to miss my final connection. This was completely avoidable, in my opinion.

The flights was delayed by hours and it was the firmest landing I have experienced in my life. My back is still sore.

The boarding process and flight were great. However, I waited about 40 minutes for my luggage. It did not come up on the designated belt. Instead, everyone’s bags were on a cart. Not sure what the issue was, but we were not informed until another passenger went looking for her bags and found them.

There were delays on both ends. It made it less than excellent. This plane was great though

Attendants were rude. Scowling. Seats were miserable and we paid extra.

Not being able to purchase my check in baggage online was a negative.

LATE LATE LATE!!! Plagued by late AA flights on this trip. Such a drag. This one was by far the worst.

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.

My flight was canceled, resulting in not being able to make my daughters graduation in time.

Flight kept being delayed on airport board without any announcement. We were delayed almost 2 hours. Finally boarded and we had no pilots so we sat on a hot plane with screaming kids and no pilots for 40 minutes. Finally he came aboard and did paperwork for 10 minutes before we took off. No apologies or any explanations or even excuses from ANY staff in the entire process. Worst experience ever on the ground and the air I have had.

I recently flew with Spirit Airlines and had an incredibly disappointing experience. I brought a book bag, which should have easily fit in the overhead compartment, but there was no space left. Instead of offering any assistance or a reasonable solution, the airline made me pay $70 for my book bag. This fee was extremely unreasonable and added unnecessary stress to my travel. To make matters worse, the flight attendant was extremely rude, further souring the entire experience. I had a terrible time and will not be flying with Spirit Airlines again.

Delays delays and more delays in both LAX and San Jose. And then I said something else flight was supposed to arrive in Portland at 12:04 but didn't land until 2:30 PM which made me late for my appointment.

We never made it, see previous reviews. Spirit Airlines employees lack compassion and empathy. No one showed any concern or care for us as customers. When we missed our connecting flight due to Spirit scheduling issues, no one batted an eye or tried to help. The response was to book us on another flight a full 24 hours later. We arrived to our gate and the plane was still there and boarding had not yet been completed. We easily could have been allowed to board had the two flight crews communicated that there were passengers coming off a delayed flight. I understand delays happen and are unpredictable, what I'm disappointed in is the way my partner and I were treated during that whole process. Spirit should be ashamed to treat their customers this way. There's a reason the reputation with this airline is what it is and they aren't doing anything to prove otherwise.

Three out of four legs of my trip were delayed. The last leg of my trip was delayed due to passengers and crew not being ready to take off. The boarding process started way late with no explanation as to why. The flight attendants did not have the passengers in check for takeoff - folks were walking around, trying to change seats, and causing a general disturbance preventing us from departing and the crew did nothing about it. All of this caused us to miss my connection home due to the first flight landing at the same time the second one was due to take off. The entire Spirit crew (except for one flight attendant) was unapologetic and unpleasant about this. No one apologized, no one showed any inkling of empathy whatsoever. The response was basically, "we booked you on the next available flight". That next flight was a full 24 hours later, we would have been stranded in the airport and no one even cared or acknowledged us as customers. I'm disappointed in the lack of compassion shown by Spirit agents and customer service reps as a whole. It felt like we were a burden due to airline scheduling issues. The one flight attendant (did not catch her name, but from (ORD to FLL) was wonderful and empathetic.

I thought people that were clearly intoxicated were not allowed to board flights. But of course they let them and of course they sat directly behind us. Kicking seats being so loud you couldn’t hear yourself think. Cussing loudly telling a woman “she was going to punch her in the fucken face” for accidentally mixing her seat assignment up. These people should have been asked to get off the plane but no flight attendant cared. I don’t think I’ll be using spirit again. Better judgment needs to be used when letting people fly drunk.

Nothing to like about Spirit Airlines when you get to your layover up to for hours late.

We received several notifications of a delay but the flight ended up leaving on time without us even tho we were in the airport eating very close by. We received no notification that the flight moved back to its original time.

The bag drop process took longer than other airlines. The boarding and crew were good. The seats do not recline and have minimal padding. The snacks/drinks are for purchase only. The flight was on time with no issues. I would fly them again if the cost was significantly less.

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.
9/11Wed
1 stopFrontier
7h 29mPIT-STL
$66
9/12Thu
1 stopSpirit Airlines
7h 30mPIT-STL
$67
9/26Thu
1 stopFrontier
13h 47mPIT-STL
$72
7/16Tue
1 stopFrontier
22h 16mPIT-STL
$75
7/17Wed
1 stopFrontier
8h 00mPIT-STL
$77
7/21Sun
1 stopSun Country Air
4h 41mPIT-STL
$123
7/16Tue
2 stopsAmerican Airlines
12h 23mPIT-STL
$248
7/17Wed
2 stopsDelta
15h 36mPIT-STL
$388
7/18Thu
2 stopsDelta
13h 00mPIT-STL
$453
7/21Sun
2 stopsUnited Airlines
9h 15mPIT-STL
$467

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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.
6/21Fri
multi-stop
23h 57mPIT-STL
6/28Fri
multi-stop
34h 34mSTL-PIT
$344
6/21Fri
multi-stop
33h 41mPIT-STL
6/28Fri
multi-stop
34h 34mSTL-PIT
$468
6/21Fri
multi-stopDelta
4h 10mPIT-STL
6/28Fri
multi-stopDelta
3h 42mSTL-PIT
$473
6/21Fri
multi-stopAmerican Airlines
5h 03mPIT-STL
6/28Fri
multi-stopAmerican Airlines
7h 06mSTL-PIT
$548
6/21Fri
multi-stopAlaska Airlines
16h 57mPIT-STL
6/28Fri
multi-stopAlaska Airlines
27h 02mSTL-PIT
$1,472

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Pittsburgh - St. Louis Flights

Departure:

Pittsburgh (PIT)United States

Destination:

St. Louis (STL)United States

Return flight deals:

St. Louis - Pittsburgh

Cabin classes: