STL

$54 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 7/13. 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, Jul 10 - Mon, Jul 14
Spirit Airlines Logo
5:59 am - 9:52 amLGA-STL
4h 53m1 stop
Spirit Airlines Logo
10:47 am - 7:00 pmSTL-LGA
7h 13m1 stop
$129Spirit Airlines
Find Deal
Thu, Jul 10 - Mon, Jul 14
Spirit Airlines Logo
6:05 am - 9:52 amEWR-STL
4h 47m1 stop
Spirit Airlines Logo
10:47 am - 8:00 pmSTL-EWR
8h 13m1 stop
$133Spirit Airlines
Find Deal
Thu, Aug 7 - Tue, Aug 12
American Airlines Logo
6:02 am - 1:12 pmPIT-STL
8h 10m1 stop
American Airlines Logo
7:23 am - 4:33 pmSTL-PIT
8h 10m1 stop
$171American Airlines
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Thu, Jun 26 - Mon, Jul 7
Logo
5:59 am - 1:40 pmEWR-STL
8h 41m1 stop
Logo
7:13 pm - 10:03 pmSTL-EWR
25h 50m1 stop
$177
Find Deal
Tue, Jul 1 - Sat, Jul 5
American Airlines Logo
7:59 pm - 9:19 pmDCA-STL
2h 20mnonstop
American Airlines Logo
6:00 am - 9:10 amSTL-DCA
2h 10mnonstop
$179American Airlines
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Thu, Jul 3 - Thu, Jul 10
Frontier Logo
6:10 am - 1:40 pmIAD-STL
8h 30m1 stop
Frontier Logo
2:36 pm - 12:12 amSTL-IAD
8h 36m1 stop
$180Frontier
Find Deal
Thu, Jun 26 - Sat, Jun 28
Frontier Logo
5:59 am - 1:40 pmEWR-STL
8h 41m1 stop
Frontier Logo
2:52 pm - 12:44 amSTL-EWR
8h 52m1 stop
$180Frontier
Find Deal
Tue, Aug 19 - Fri, Sep 5
Delta Logo
6:00 am - 9:57 amEWR-STL
4h 57m1 stop
Delta Logo
5:11 pm - 12:44 amSTL-EWR
6h 33m1 stop
$187Delta
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Fri, Jul 11 - Mon, Jul 14
Logo
6:15 am - 9:11 amPHL-STL
27h 56m1 stop
Logo
10:47 am - 10:26 pmSTL-PHL
10h 39m1 stop
$189
Find Deal
Thu, Aug 7 - Mon, Aug 11
Delta Logo
6:30 am - 8:10 amLGA-STL
2h 40mnonstop
Delta Logo
3:10 pm - 6:43 pmSTL-LGA
2h 33mnonstop
$197Delta
Find Deal
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Good to know

Low seasonJanuary
High seasonJuly
Cheapest flight$54
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly and prices are also 8% lower on average.
Flight from Newark Liberty 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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