STL

$56 Find Cheap Flights from Pennsylvania 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 to St. Louis departing on 8/25. 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
1 adult, Economy

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Flights Deals

Cheap Flights from Pennsylvania to St. Louis

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Pennsylvania 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 for you by selecting your travel dates on KAYAK.

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

Thu, Sep 4 - Thu, Sep 18
Spirit Airlines Logo
6:30 am - 10:50 amLGA-STL
5h 20m1 stop
Spirit Airlines Logo
12:05 pm - 10:38 pmSTL-LGA
9h 33m1 stop
$110Spirit Airlines
Find Deal
Thu, Aug 28 - Thu, Sep 4
Spirit Airlines Logo
6:35 am - 1:32 pmLGA-STL
7h 57m1 stop
Spirit Airlines Logo
12:05 pm - 10:38 pmSTL-LGA
9h 33m1 stop
$115Spirit Airlines
Find Deal
Tue, Oct 28 - Tue, Nov 4
American Airlines Logo
6:09 am - 1:44 pmPIT-STL
8h 35m1 stop
American Airlines Logo
6:00 am - 3:33 pmSTL-PIT
8h 33m1 stop
$171American Airlines
Find Deal
Thu, Sep 4 - Sat, Sep 6
Logo
6:30 am - 10:50 amLGA-STL
5h 20m1 stop
Logo
7:55 pm - 10:11 pmSTL-LGA
25h 16m1 stop
$174
Find Deal
Sat, Sep 20 - Thu, Sep 25
Logo
6:45 am - 9:06 amPHL-STL
27h 21m1 stop
Logo
12:05 pm - 9:39 pmSTL-PHL
8h 34m1 stop
$178
Find Deal
Thu, Sep 11 - Tue, Sep 16
Delta Logo
6:20 am - 7:56 amLGA-STL
2h 36mnonstop
Delta Logo
6:05 am - 9:33 amSTL-LGA
2h 28mnonstop
$197Delta
Find Deal
Thu, Sep 18 - Mon, Sep 22
Delta Logo
2:55 pm - 4:48 pmJFK-STL
2h 53mnonstop
Delta Logo
4:10 pm - 7:58 pmSTL-JFK
2h 48mnonstop
$197Delta
Find Deal
Wed, Sep 17 - Tue, Sep 30
American Airlines Logo
8:00 am - 12:23 pmPIT-STL
5h 23m1 stop
American Airlines Logo
7:23 am - 4:53 pmSTL-PIT
8h 30m1 stop
$199American Airlines
Find Deal
Fri, Sep 12 - Sun, Sep 14
United Airlines Logo
9:48 pm - 11:44 pmEWR-STL
2h 56mnonstop
United Airlines Logo
5:30 pm - 12:30 amSTL-EWR
6h 00m1 stop
$207United Airlines
Find Deal
Sat, Sep 13 - Mon, Sep 15
United Airlines Logo
9:48 pm - 11:44 pmEWR-STL
2h 56mnonstop
United Airlines Logo
6:00 am - 9:36 amSTL-EWR
2h 36mnonstop
$214United Airlines
Find Deal
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Good to know

Low seasonJanuary
Cheapest flight$56
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly and prices are also 1% lower on average.
Flight from New York LaGuardia Airport to St. Louis

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.

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

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

St. Louis (STL)

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