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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
Tue 6/4
Tue 6/11

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 42,830,901 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
9:17 pm - 10:28 amPIT-STL
14h 11m1 stop
2:35 pm - 11:59 pmSTL-PIT
8h 24m1 stop
$141Spirit Airlines
Find Deal
Fri, May 17 - Tue, May 21
9:17 pm - 10:28 amPIT-STL
14h 11m1 stop
10:34 am - 7:22 amSTL-PIT
19h 48m2 stops
$153Spirit Airlines
Find Deal
Fri, May 17 - Tue, May 21
9:17 pm - 10:28 amPIT-STL
14h 11m1 stop
10:34 am - 10:06 pmSTL-PIT
34h 32m3 stops
$167Spirit Airlines
Find Deal
Fri, May 17 - Tue, May 21
9:43 pm - 9:29 amPIT-STL
12h 46m1 stop
8:12 pm - 12:52 pmSTL-PIT
15h 40m1 stop
Tue, Jun 4 - Thu, Jun 6
8:14 am - 3:32 pmPIT-STL
8h 18m1 stop
7:30 am - 3:42 pmSTL-PIT
7h 12m1 stop
$222American Airlines
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Thu, Sep 26 - Sat, Sep 28
9:17 pm - 10:28 amPIT-STL
14h 11m1 stop
4:45 pm - 6:41 pmSTL-PIT
24h 56m3 stops
Fri, May 17 - Mon, May 20
5:00 am - 8:30 amPIT-STL
4h 30m1 stop
7:05 am - 3:56 pmSTL-PIT
7h 51m1 stop
$253American Airlines
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Mon, Aug 5 - Fri, Aug 9
6:05 am - 9:19 amPIT-STL
4h 14m1 stop
6:12 pm - 11:07 pmSTL-PIT
3h 55m1 stop
$540Delta
Find Deal
Tue, May 21 - Wed, May 22
6:10 am - 3:41 pmPIT-STL
10h 31m2 stops
8:05 am - 1:11 pmSTL-PIT
4h 06m1 stop
$570United Airlines
Find Deal
Sun, Jun 16 - Tue, Jun 18
7:00 am - 12:13 pmPIT-STL
6h 13m1 stop
6:30 am - 1:56 pmSTL-PIT
6h 26m2 stops
$656United Airlines
Find Deal
Fri, May 24 - Sun, May 26

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 Tuesdays 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 May and March, where the average cost of tickets is $404 and $382 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 Spirit Airlines ($141) and American Airlines ($222). Spirit Airlines proposed the cheapest one-way flight at $76.

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 43m. The most common departure time is 9:00 am and most flights take off in the morning. Each week, there are 8 flights. The most frequent day of departure is Tuesday, when 25% of all weekly flights depart. The fewest flights depart on a Friday.

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

Early birds can take the earliest flight from Pittsburgh at 8:10 am and will be landing in St. Louis at 8:50 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

June

Cheapest flight

$76
Best time to beat the crowds with an average 16% drop in price.
Most popular time to fly and prices are also 15% 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 $76 for a one-way ticket and $141 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 $344 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 10826 reviews
8.2Boarding
8.6Crew
7.4Food
7.9Comfort
8.0Entertainment
Airline reviews

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

10.0 ExcellentAllan, May 2024SUN - SLC
Read more about Delta reviews

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

Checking in at the airport the agent only booked the first keg of my trip and had my checked luggage going to the airport with a layover! Never was issued a boarding pass for the second leg or received sticker fir my checked bag. All was well in the end! Delta agents helped to resolve the situation!!!

Delayed due to an ill passenger after loading. Not preventable on Delta's part. Was in first class. The seats are becoming worn and detaching from their velcro attachments. Only got snacks on flight. The attendant was not the friendliest.

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

From Atlanta to Cabo I would have hoped on a plane that size I would have been able to breathe and wiggle my feet a little! The leg room in that plane is non existent and I am only 5”4’. And the air vent either wasn’t working very well or just could not blow air from the ceiling to the seat area as I was suffocating through the entire flight! And please don’t say I would have been more comfortable in first class because I cannot afford those rates and have always travelled Main Cabin without issues !

The pilots were good. Disappointing when planes don't have electrical ports

I liked the piloting of the aircraft. Very disappointed about lack of electrical ports. Also, although a short flight. there was enough time to hand out snacks to comfort + seats as was done for first class.

I had a wonderful experience flying with delta. The gentleman taking care of us on our flight was so nice, accommodating, and attentive. He always was smiling and giving pins to the kids which made me smile. The flight was quick too and without turbulence. Thank you for the great flying experience.

Delta is one of the best airlines I have flown

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

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

The plane was dirty and the in seat air wasn't blowing as planes usually do.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

All flights were on time and boarding was issue free

Terrible! The plane was old and you are required to connect your own device to their Wi-Fi rather than have entertainment options in the back of the seat in front of you. The Wi-Fi went out during the flight and there was only one plug for the devices every two seats. Three out of five surrounding my family did not work. The seats and spaces under them were so small I could not fit my backpack, which I’ve always brought on flights and fit before no problem. The crew were unpleasant and patronizing.

Great! The plane was decently sized and comfortable. The staff was nice and there was great in flight entertainment

Water service would be great. The way they board is terrible. Slow passengers first😂😂 They need to smart up a bit

Our original business class flight was cancelled so we not only downgraded but we were also spread out across the plane not sitting together in separate middle seats. My poor kids were scared and couldn’t see me on the flight and the crew wasn’t sensitive to the situation and what the airlines did to us. Very dissatisfied with United airlines.

Crew were fine, drinks and snacks were as well but we were delayed for around 2 hrs which made our entry into Mexico delayed as well with the influx of arrivals at the same time. Sort of wasted our first day of vacation. We left Pittsburgh at 630am and did not arrive in Mexico until late dinner time.

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.

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!

The crew was not great or professional. It seemed like they didn't really want to be there. A true lack of effort for accommodating customers.

Everything was really good but the seats are not very comfortable.

I paid for WiFi, but it (WiFi) was very very slow, will never take again! Impossible open Utube 😤😤😤

I had no legroom, although I paid for extra legroom. I could barely put my bag in front of my feet and under the seat. The Wi-Fi was horrible. In fact the flight attendant said that they had to reboot it and see if it was going to work and never did.

The guy with severe body odor sat next to me. For the whole duration of the flight it was a torture. The airline should have better policy on limiting people with bad body odor to board the flight. Passengers should not be the ones to endure bad odor for the whole duration of the flight. The airline should be e the one to ensure decent air quality for ever passenger.

Overall it was a miserable experience... I will never fly spirit for more than a 3 hour flight or overnight.

The boarding attendant was slightly rude when I asked about checking our stroller. Made me feel like I was bothering her.

My wife and I are both handicapped and at boarding they upgraded us to a seat closer to the front rather than all the way towards the back. Much appreciated.

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.

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
5/23Thu
1 stopSpirit Airlines
12h 07mPIT-STL
$88
6/1Sat
1 stopSpirit Airlines
10h 48mPIT-STL
$91
5/17Fri
1 stopSpirit Airlines
14h 11mPIT-STL
$97
6/1Sat
2 stopsSpirit Airlines
21h 15mPIT-STL
$125
6/1Sat
3 stopsSpirit Airlines
27h 12mPIT-STL
$147
6/2Sun
2 stops
24h 14mPIT-STL
$162
6/2Sun
3 stops
18h 13mPIT-STL
$179
5/17Fri
2 stopsAmerican Airlines
10h 04mPIT-STL
$286

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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.
5/10Fri
multi-stopSpirit Airlines
14h 11mPIT-STL
5/12Sun
multi-stopSpirit Airlines
28h 29mSTL-PIT
$320
5/7Tue
multi-stopFrontier
21h 06mPIT-STL
5/8Wed
multi-stopFrontier
15h 37mSTL-PIT
$328
5/10Fri
multi-stopUnited Airlines
8h 26mPIT-STL
5/12Sun
multi-stopUnited Airlines
5h 19mSTL-PIT
$808
5/7Tue
multi-stopAmerican Airlines
4h 28mPIT-STL
5/8Wed
multi-stopAmerican Airlines
6h 33mSTL-PIT
$839

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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: