How does KAYAK find such low prices on flights from Pennsylvania 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 Pennsylvania to St. Louis. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Pennsylvania to St. Louis?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Pennsylvania is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Pennsylvania 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 Pennsylvania with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Pennsylvania 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 Pennsylvania up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$80 CHEAP FLIGHTS from Pennsylvania to St. Louis

STL

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

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Flight Deals

Cheap Flights from Pennsylvania to St. Louis

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Pennsylvania to St. Louis

Thu, Apr 2 - Tue, Apr 14

8:05 pm - 8:55 pm

PIT

STL

1h 50mnonstop

6:45 pm - 9:20 pm

STL

PIT

1h 35mnonstop

$251Southwest

Thu, Apr 2 - Tue, Apr 14

8:05 pm - 8:55 pm

PIT

STL

1h 50mnonstop

1:45 pm - 8:45 pm

STL

PIT

6h 00m

1 stop

$256Southwest

Thu, Apr 9 - Tue, Apr 14

5:55 pm - 9:13 pm

PIT

STL

4h 18m

1 stop

6:30 am - 1:05 pm

STL

PIT

5h 35m

1 stop

$269United Airlines

Wed, Apr 8 - Sat, Apr 11

9:19 am - 1:22 pm

IAD

STL

5h 03m

1 stop

6:53 pm - 11:59 pm

STL

IAD

4h 06m

1 stop

$274American Airlines

Wed, Apr 8 - Sat, Apr 11

11:36 am - 4:00 pm

DCA

STL

5h 24m

1 stop

6:53 pm - 11:59 pm

STL

DCA

4h 06m

1 stop

$274American Airlines

Thu, Apr 9 - Sat, Apr 11

8:20 am - 12:22 pm

IAD

STL

5h 02m

1 stop

8:30 am - 11:43 am

STL

IAD

2h 13mnonstop

$275United Airlines

Fri, Apr 24 - Sun, Apr 26

1:08 pm - 11:19 pm

IAD

STL

11h 11m

1 stop

4:59 pm - 7:32 am

STL

IAD

13h 33m

1 stop

$276Frontier

Thu, Apr 16 - Tue, Apr 21

6:10 am - 10:30 am

IAD

STL

5h 20m

1 stop

4:59 pm - 12:36 am

STL

IAD

30h 37m

2 stops

$277Frontier

Thu, Apr 23 - Fri, Apr 24

9:41 am - 11:19 pm

IAD

STL

14h 38m

2 stops

8:23 pm - 9:54 am

STL

IAD

12h 31m

1 stop

$284Multiple Airlines

Fri, Apr 10 - Wed, Apr 15

9:59 am - 11:58 pm

LGA

STL

14h 59m

2 stops

8:23 pm - 5:45 pm

STL

LGA

20h 22m

1 stop

$285Multiple Airlines

Useful Info

Low season	January
High season	May
Cheapest flight	$80

Best time to beat the crowds but there is an average 4% increase in price.

Most popular time to fly and prices are also 5% lower on average.

Flight from Newark Liberty Airport to St. Louis

How does KAYAK find such low prices on flights from Pennsylvania 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 Pennsylvania to St. Louis.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Pennsylvania to St. Louis?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Pennsylvania 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 Pennsylvania 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 Pennsylvania with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Pennsylvania 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 Pennsylvania up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

O'Fallon

Wentzville

Farmington

Eureka

Litchfield

Grafton

Shrewsbury

Glencoe

Everything you need to know for your flight to St. Louis

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on the airport you'll fly into in St. Louis

St. Louis (STL)

STL

$80 Find Cheap Flights from Pennsylvania to St. Louis

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

Cheap Flights from Pennsylvania to St. Louis

Recent round-trip flight deals from Pennsylvania to St. Louis

Recent one-way flight deals from Pennsylvania to St. Louis

Recent last minute flight deals from Pennsylvania to St. Louis

Recent direct flight deals from Pennsylvania to St. Louis

Good to know

FAQs for booking flights from Pennsylvania to St. Louis

How does KAYAK find such low prices on flights from Pennsylvania 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 Pennsylvania to St. Louis.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Pennsylvania to St. Louis?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Pennsylvania 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 Pennsylvania 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 Pennsylvania with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Pennsylvania 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 Pennsylvania up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near St. Louis?

Everything you need to know for your flight to St. Louis

Information on the airport you'll fly into in St. Louis

Cabin class types available on flights to Pennsylvania

Complete your trip to St. Louis with a hotel stay or car rental

Find direct flights for St. Louis

Flights to other popular destinations

Flights from domestic origins to St. Louis

Choose which airport to fly into in St. Louis

Find deals for your return flight