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STL - PIT

Find cheap flights from St. Louis to Pittsburgh from $55

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 5/22. 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
vie. 6/7
vie. 6/14

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 43,968,530 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

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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
2:35 pm - 11:59 pmSTL-PIT
8h 24m1 stop
8:00 am - 7:22 pmPIT-STL
12h 22m1 stop
$130Spirit Airlines
Find Deal
mar., jun. 4 - jue., jun. 6
10:34 am - 7:28 amSTL-PIT
19h 54m2 stops
8:00 am - 7:22 pmPIT-STL
12h 22m1 stop
$137Spirit Airlines
Find Deal
mar., jun. 4 - jue., jun. 6
2:35 pm - 11:08 pmSTL-PIT
7h 33m1 stop
10:25 pm - 5:28 pmPIT-STL
20h 03m1 stop
$141Spirit Airlines
Find Deal
mar., jun. 4 - vie., jun. 7
2:35 pm - 11:59 pmSTL-PIT
8h 24m1 stop
5:45 pm - 10:34 amPIT-STL
17h 49m2 stops
$155Spirit Airlines
Find Deal
mar., jun. 4 - vie., jun. 7
10:36 pm - 7:04 amSTL-PIT
7h 28m1 stop
6:40 am - 5:28 pmPIT-STL
11h 48m1 stop
mié., jun. 5 - sáb., jun. 8
8:57 am - 6:06 pmSTL-PIT
8h 09m1 stop
10:25 pm - 9:39 amPIT-STL
12h 14m1 stop
sáb., may. 25 - lun., may. 27
7:05 am - 3:56 pmSTL-PIT
7h 51m1 stop
11:45 am - 5:47 pmPIT-STL
7h 02m1 stop
$202American Airlines
Find Deal
mar., ago. 20 - jue., ago. 22
5:37 am - 12:37 pmSTL-PIT
6h 00m1 stop
7:00 am - 3:32 pmPIT-STL
9h 32m1 stop
$233American Airlines
Find Deal
dom., sep. 29 - mar., oct. 1
8:05 am - 1:12 pmSTL-PIT
4h 07m1 stop
6:20 am - 3:49 pmPIT-STL
10h 29m2 stops
$442United Airlines
Find Deal
dom., sep. 29 - mar., oct. 1
6:08 am - 12:28 pmSTL-PIT
5h 20m1 stop
6:10 am - 2:16 pmPIT-STL
9h 06m2 stops
$721United Airlines
Find Deal
jue., jun. 13 - dom., jun. 16

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 Tuesday, 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 September, where tickets cost $275 on average. On the other hand, the most expensive months are January and May, where the average cost of tickets is $438 and $436 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 77 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 $55. KAYAK users also found St. Louis to Pittsburgh round-trip flights on Spirit Airlines from $130 and on American Airlines from $202.

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

Each day, there are 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 7:00 pm and most flights take off in the afternoon. Each week, there are 14 flights and there are the same amount of flights each day 2.

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

Early birds can take the earliest flight from St. Louis at 9:10 am and will be landing in Pittsburgh at 11:45 am.

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 9:10 pm and lands at 11:45 pm.

Good to know

Low season

March

High season

July

Cheapest flight

$55
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly and prices are also 12% lower on average.
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 $55 for a one-way ticket and $130 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, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Pittsburgh are United Airlines and American Airlines. With an average price for the route of $341 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $340 and an overall rating of 7.3.

  • 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 10789 reviews
7.9Comfort
8.2Boarding
8.6Crew
7.4Food
8.0Entertainment
Airline reviews

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

2.0 MediocreAnonymous, May 2024AVL - LGA
Read more about Delta reviews

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

Very frustrated with boarding gate crew. She announced the plane was small and they would be limiting us to one item to carry on. Not a problem for me as I understand the tiny planes have limited space!! Not the case here! It was a rather large plane and had plenty of room for bags! So because I don’t want to be one of “those people” who ignores the request to check a carry on I did so asking if I would be able to pick it up at the bottom of the ramp on arrival in Knoxville to which she responded “yes”! Then I watched as every other passenger held onto their 2 items and boarded!! Then when we arrived in Knoxville our 2 carry ons had been put with all the other luggage and we had to go to baggage pick up and wait for all the big checked bags to come off the carousel! So she lied!! Frustrating. Next time I won’t be so nice!

It was a good experience except when boarding a female flight attendant did not go out of her way to assist my teenage daughters in finding space for their carry-ons after their compartments were full.

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.

Surprisingly easy! I was hesitant to try this, but the cost swayed me. I actually felt like I had less stress than all the taxiing and possible delays that occur with short regional flights where you spend less time in the air than getting to and from the plane..

This flight was delayed multiple times and eventually canceled around 2-3ish. Original take off time was around 10:30am. By 3, there were no other options out of Houston, so stuck in Houston for from 3pm - 11am the next day.

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

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

Great crew. We were delayed so that late passengers could get on the flight. Love the bedding in business class. Good food. Great experience.

The CX617 from HK to BKK was delayed more than 1.5 hours.

Too bad that first class seats do not recline significantly causing discomfort

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.

For it to have left on time! Instead of two hours early with zero notice

Flight kept delayed from morning to late afternoon so I had to make other arrangements

Crew was nice, explained emergency protocol very well. Flight took off and arrived on time. Pilot explained the small delay that occurred with docking and providing updates. I would definitely fly spirit again.

Terrible… missed our flight due to ridiculously long time to go thru baggage check-in!

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.

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.
5/22mié.
1 stopFrontier
8h 39mSTL-PIT
$55
6/6jue.
1 stopSpirit Airlines
15h 40mSTL-PIT
$73
7/3mié.
1 stopFrontier
7h 28mSTL-PIT
$86
6/3lun.
1 stopFrontier
9h 48mSTL-PIT
$94
6/6jue.
2 stopsSpirit Airlines
19h 12mSTL-PIT
$107
6/15sáb.
1 stopSpirit Airlines
6h 12mSTL-PIT
$110
6/3lun.
3 stopsSpirit Airlines
30h 54mSTL-PIT
$133
5/14mar.
3 stops
31h 49mSTL-PIT
$148
6/7vie.
1 stopAmerican Airlines
4h 11mSTL-PIT
$153
5/22mié.
2 stopsAmerican Airlines
8h 25mSTL-PIT
$285

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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.
5/12dom.
multi-stopSpirit Airlines
28h 29mSTL-PIT
5/15mié.
multi-stopSpirit Airlines
24h 46mPIT-STL
$314
5/12dom.
multi-stopSpirit Airlines
24h 54mSTL-PIT
5/15mié.
multi-stopSpirit Airlines
23h 59mPIT-STL
$428
5/12dom.
multi-stopSpirit Airlines
25h 36mSTL-PIT
5/15mié.
multi-stopSpirit Airlines
23h 59mPIT-STL
$434
5/9jue.
multi-stop
28h 29mSTL-PIT
5/12dom.
multi-stop
22h 11mPIT-STL
$461
5/12dom.
multi-stop
25h 36mSTL-PIT
5/15mié.
multi-stop
22h 11mPIT-STL
$478
5/9jue.
multi-stopSpirit Airlines
22h 34mSTL-PIT
5/10vie.
multi-stopSpirit Airlines
14h 11mPIT-STL
$497
5/12dom.
multi-stopAmerican Airlines
5h 32mSTL-PIT
5/15mié.
multi-stopAmerican Airlines
9h 57mPIT-STL
$647
5/9jue.
multi-stopUnited Airlines
7h 17mSTL-PIT
5/12dom.
multi-stopUnited Airlines
4h 44mPIT-STL
$857
5/9jue.
multi-stopUnited Airlines
6h 17mSTL-PIT
5/10vie.
multi-stopUnited Airlines
5h 36mPIT-STL
$917
5/9jue.
multi-stopUnited Airlines
6h 17mSTL-PIT
5/12dom.
multi-stopUnited Airlines
8h 26mPIT-STL
$1,029

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St. Louis - Pittsburgh Flights

Departure:

St. Louis (undefined)United States

Destination:

Pittsburgh (PIT)United States

Return flight deals:

Pittsburgh - St. Louis

Cabin classes: