Cheap flights from Pittsburgh to St. Louis (PIT - STL) from $89

This is the cheapest one-way flight price, found on 9/26. Prices may vary by date and flight preferences.
PIT — STL
oct. 3 — oct. 101

The best prices from Pittsburgh to Lambert-St Louis are usually found in September or October, booked 54 days in advance, depart on a Tuesday or Monday and return on a Monday

How to find the cheapest flight from Pittsburgh (PIT) to St. Louis (STL)

All the information you need to plan the best PIT to STL flight in 2023: compare Pittsburgh to St. Louis flight prices with the expected peak season, weather and rainfall in St. Louis.

Popular in

August

Cheapest in

September

Round-trip from

$299

One-way from

$94
High demand for flights, 31% potential price rise
Best time to find cheap flights, 19% potential price drop
From Pittsburgh to Lambert-St Louis
One-way flight from Pittsburgh to Lambert-St Louis

PIT - STL

Price

$299 - $474

STL

Temperature

32 - 80.6 °F

STL

Rainfall

2.2 - 4.7 inches

What is the cheapest day to fly round-trip from Pittsburgh to St. Louis?

Saturday flights are generally found to be more expensive for flights from Pittsburgh to St. Louis. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to St. Louis.

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

To save on the cost of your flight from Pittsburgh to St. Louis, book at least 54 days before your planned departure. Booking around this time can save you about 54% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $376 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $487.

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

Flights from Pittsburgh to St. Louis lean towards being more expensive in August. Prices are generally better when you fly from Pittsburgh to St. Louis in September, with the cheapest ticket starting at $204.

When is the cheapest time to fly from Pittsburgh to St. Louis (PIT - STL)?

A simple way to save on the total cost of your ticket is to fly from Pittsburgh to St. Louis at noon. If you’re flexible enough to do this you can expect to save up to 2% on your trip compared to booking a flight in the morning.

Cheap Spirit Airlines flights from Pittsburgh to St. Louis

Take a look at some of the lowest-priced Spirit Airlines flights heading from Pittsburgh to St. Louis. It's recommended that users confirm their flight details before booking.

Cheap American Airlines flights from Pittsburgh to St. Louis

Take a gander at the lowest prices we've found on American Airlines flights from Pittsburgh to St. Louis. Check back soon if you're not seeing flights that suit your needs.

Cheap Pittsburgh to St. Louis flights in September & October 2023

The best prices found for PIT to STL flights for September, October
The lowest fares we've come across on flights traveling from Pittsburgh to St. Louis in September and October 2023. More deals are always being added, so be sure to check back regularly.

Pittsburgh to St. Louis 2023 flight deals

Cheap flights to St. Louis from Pittsburgh found for this year
The lowest fares we've come across on flights traveling from Pittsburgh to St. Louis in September and October 2023. More deals are always being added, so be sure to check back regularly.

Non-stop flights to St. Louis from Pittsburgh

Save time with Pittsburgh to St. Louis direct flight deals
If you're seeking options on non-stop flights from Pittsburgh to St. Louis, check out these fares. Users seeking other options on flights from Pittsburgh to St. Louis should update the search form at the top of the page.

Pittsburgh to St. Louis flights leaving soon

Late deals on return flights to St. Louis from Pittsburgh, departing today and this week
Have a look at some of the last-minute flights available departing from Pittsburgh to St. Louis. Tip: verify your flight details before completing your reservation.

One-way flights to St. Louis from Pittsburgh

The cheapest one-way flights from Pittsburgh to St. Louis
Some of the best available deals we've found on one-way flights from Pittsburgh to St. Louis. Users in need of a round-trip flight from Pittsburgh to St. Louis instead should update the search form at the top of page.

Find flights from Pittsburgh to St. Louis within your budget

Use the slider to find flights from Pittsburgh to St. Louis that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

$152 - $274

Route

Depart

Return

Price

PittsburghLambert-St Louis

PIT - STL

PITSTL

Pittsburgh

vie. 11/3

1 stop13h 13m

Lambert-St Louis

dom. 11/5

1 stop23h 32m

PittsburghLambert-St Louis

PIT - STL

PITSTL

Pittsburgh

jue. 10/19

1 stop26h 02m

Lambert-St Louis

lun. 10/23

1 stop29h 18m

PittsburghLambert-St Louis

PIT - STL

PITSTL

Pittsburgh

jue. 10/19

1 stop26h 02m

Lambert-St Louis

lun. 10/23

1 stop29h 18m

PittsburghLambert-St Louis

PIT - STL

PITSTL

Pittsburgh

sáb. 10/28

2 stops14h 29m

Lambert-St Louis

sáb. 11/4

1 stop10h 18m

PittsburghLambert-St Louis

PIT - STL

PITSTL

Pittsburgh

sáb. 10/28

1 stop5h 45m

Lambert-St Louis

sáb. 11/4

1 stop4h 32m

PittsburghLambert-St Louis

PIT - STL

PITSTL

Pittsburgh

vie. 10/13

1 stop16h 09m

Lambert-St Louis

lun. 10/16

1 stop20h 12m

PittsburghLambert-St Louis

PIT - STL

PITSTL

Pittsburgh

mar. 10/10

1 stop23h 29m

Lambert-St Louis

jue. 10/12

1 stop19h 01m

PittsburghLambert-St Louis

PIT - STL

PITSTL

Pittsburgh

vie. 11/17

1 stop5h 26m

Lambert-St Louis

lun. 11/20

1 stop4h 36m

PittsburghLambert-St Louis

PIT - STL

PITSTL

Pittsburgh

vie. 1/12

1 stop4h 33m

Lambert-St Louis

dom. 1/14

1 stop5h 25m

Flights are sorted by cheapest first

Deals found on 9/26

Reviews of airlines servicing St. Louis

Read through reviews of airlines operating flights from Pittsburgh to St. Louis, such as Spirit Airlines, American Airlines and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
1,394 reviews

Entertainment

7.2

Comfort

8.0

Crew

8.6

Food

7.2

Boarding

8.3

Overall

8.1

Reviews

1 / 10

The alaska crew out of Paine field was exceptional! It was the first time I have flown out of this airport. The only thing that was harder is that our flight was delayed 3 hours out of Phoenix.

Alaska Airlines
8.1
Very good
1,394 reviews
Alaska Airlines
8.1
Very good
1,394 reviews

Entertainment

7.2

Comfort

8.0

Crew

8.6

Food

7.2

Boarding

8.3

Overall

8.1

Reviews

1 / 10

The alaska crew out of Paine field was exceptional! It was the first time I have flown out of this airport. The only thing that was harder is that our flight was delayed 3 hours out of Phoenix.

Delta
7.9
Good
3,023 reviews
Alaska Airlines
8.1
Very good
1,394 reviews

Entertainment

7.2

Comfort

8.0

Crew

8.6

Food

7.2

Boarding

8.3

Overall

8.1

Reviews

1 / 10

The alaska crew out of Paine field was exceptional! It was the first time I have flown out of this airport. The only thing that was harder is that our flight was delayed 3 hours out of Phoenix.

Southwest
7.6
Good
1,521 reviews
Alaska Airlines
8.1
Very good
1,394 reviews

Entertainment

7.2

Comfort

8.0

Crew

8.6

Food

7.2

Boarding

8.3

Overall

8.1

Reviews

1 / 10

The alaska crew out of Paine field was exceptional! It was the first time I have flown out of this airport. The only thing that was harder is that our flight was delayed 3 hours out of Phoenix.

United Airlines
7.4
Good
1,890 reviews
Alaska Airlines
8.1
Very good
1,394 reviews

Entertainment

7.2

Comfort

8.0

Crew

8.6

Food

7.2

Boarding

8.3

Overall

8.1

Reviews

1 / 10

The alaska crew out of Paine field was exceptional! It was the first time I have flown out of this airport. The only thing that was harder is that our flight was delayed 3 hours out of Phoenix.

American Airlines
7.2
Good
2,635 reviews
Alaska Airlines
8.1
Very good
1,394 reviews

Entertainment

7.2

Comfort

8.0

Crew

8.6

Food

7.2

Boarding

8.3

Overall

8.1

Reviews

1 / 10

The alaska crew out of Paine field was exceptional! It was the first time I have flown out of this airport. The only thing that was harder is that our flight was delayed 3 hours out of Phoenix.

Related info for your journey

Useful info, stats and facts about Pittsburgh to St. Louis flights.

What airports do I use to fly from Pittsburgh to St. Louis?

You will need to book a flight from Pittsburgh to Lambert-St Louis if you want to fly from Pittsburgh to St. Louis. At least 4 different airlines have flights from Pittsburgh (PIT) to Lambert-St Louis (STL) on a regular basis. There is 1 flight to St. Louis from the Pittsburgh airport per day. If you manage to book one that is nonstop, then you can expect the flight time from PIT to STL to be around 1h 40m.

Can I find flights from Pittsburgh to St. Louis for under $200 on Cheapflights?

Yes, there are multiple flights from Pittsburgh to St. Louis for under $200. The cheapest flight booked recently is on Multiple Airlines for just $152, but on average you can expect to pay $225.

Are there nonstop flights from Pittsburgh to St. Louis for under $600 on Cheapflights?

Cheapflights has at least 1 direct flight from Pittsburgh to St. Louis under $600. A good price for a nonstop flight from Pittsburgh to St. Louis is less than $570.

Are there last-minute flights available from Pittsburgh to St. Louis for under $400?

There are currently 10+ open flights from Pittsburgh to St. Louis within the next 7 days for less than $400.

What days are nonstop flights available from Pittsburgh to St. Louis?

Days when nonstop flights are available for this flight are: Monday, Friday, Saturday.

How many flights depart from Pittsburgh to St. Louis on average per day?

Travelers can expect 4 flights from Pittsburgh to St. Louis on average per day.
Morning (6am - Noon) - 75% of flight departures
Evening (6pm - Midnight) - 25% of flight departures

How long is the flight from Pittsburgh to St. Louis?

Frontier, American Airlines, and Spirit Airlines can get you from Pittsburgh to St. Louis in just under 5h 45m. Your travel time can differ by up to 20h 17m. Airlines will cover a distance of 555 mi. This flight may include one or multiple stops.

What are the cheapest airlines flying from Pittsburgh to St. Louis round-trip?

Frontier, at $162, was found to be the cheapest airline from Pittsburgh to St. Louis.Alternate airlines to your destination round-trip include American Airlines and Spirit Airlines. Users have found that Frontier is 54% cheaper than the other options available to this destination.

What are the cheapest airlines to fly from Pittsburgh to St. Louis one-way?

The cheapest airline one-way is Spirit Airlines, with whom users have recently found tickets for as low as $89. However, be on the lookout for offers from Frontier and Delta, as they are both options that can get you from Pittsburgh to St. Louis for a low price.

What are the most popular airlines that fly from Pittsburgh to St. Louis?

What does PIT to STL mean?

These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Pittsburgh Airport to Lambert-St Louis Airport flight would often be abbreviated as a PIT to STL flight.

Alternative routes for Pittsburgh to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from Pittsburgh to St. Louis

The chart below displays the airlines Cheapflights users traveling from Pittsburgh to St. Louis choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$132Average$215FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
United AirlinesCheapest$195Average$471FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest$221Average$279FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapest$242Average$321FlexibilityNo cancel feeOn-timeN/A
Search Delta flights

Hourly flight availability from Pittsburgh to St. Louis

See what time of day planes typically take off from Pittsburgh to St. Louis
0%of flight departuresEarly morningMidnight to 6 am
100%of flight departuresMorning6 am to noon
0%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Pittsburgh to St. Louis

See how many times per day planes take to the skies headed from Pittsburgh to St. Louis
Sunday2daily flights
Monday1daily flight
Tuesday1daily flight
Wednesday1daily flight
Thursday1daily flight
Friday1daily flight
Saturday1daily flight

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How does Cheapflights help users find flights from Pittsburgh to St. Louis?

Deals for Pittsburgh to St. Louis flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Pittsburgh to St. Louis?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to St. Louis from Pittsburgh.

Can Cheapflights find flights from Pittsburgh to St. Louis with no change fees?

Need flexible booking options for your flight to St. Louis from Pittsburgh? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Pittsburgh to St. Louis become cheaper?

Not ready to book yet? You can track prices for flights from Pittsburgh to St. Louis on Cheapflights with our Price Alert feature and get notified when better prices are available.

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