--- title: "Cheap Flights from Williamsport (IPT) to St. Louis (STL)" description: "Cheap Flights from Williamsport (IPT) to St. Louis (STL) start at for one-way and for round trip. Earn your airline miles on top of our rewards!" canonical: "https://www.expedia.ca/lp/flights/ipt/stl/williamsport-to-st-louis" language: en-CA market: CA currency: CAD prices_as_of: 2026-11-12T22:55:43Z --- # Cheap Flights from Williamsport (IPT) to St. Louis (STL) ![A city skyline with a prominent arch bridge at sunset.](https://images.trvl-media.com/place/5002323/199e2ff7-9ba1-40d2-987c-00d8170be611.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ## Popular airlines from Williamsport, PA (IPT-Williamsport Regional) to Lambert-St. Louis International Airport (STL) [Air Canada](https://www.expedia.ca/Flights-Search?leg1=from:IPT,to:STL,departure:26/11/2026TANYT&leg2=from:STL,to:IPT,departure:03/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) [WestJet](https://www.expedia.ca/Flights-Search?leg1=from:IPT,to:STL,departure:26/11/2026TANYT&leg2=from:STL,to:IPT,departure:03/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WS"}}]) [Flair Airlines](https://www.expedia.ca/Flights-Search?leg1=from:IPT,to:STL,departure:26/11/2026TANYT&leg2=from:STL,to:IPT,departure:03/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F8"}}]) [American Airlines](https://www.expedia.ca/Flights-Search?leg1=from:IPT,to:STL,departure:26/11/2026TANYT&leg2=from:STL,to:IPT,departure:03/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) [United](https://www.expedia.ca/Flights-Search?leg1=from:IPT,to:STL,departure:26/11/2026TANYT&leg2=from:STL,to:IPT,departure:03/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) [Delta](https://www.expedia.ca/Flights-Search?leg1=from:IPT,to:STL,departure:26/11/2026TANYT&leg2=from:STL,to:IPT,departure:03/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) [Porter Airlines](https://www.expedia.ca/Flights-Search?leg1=from:IPT,to:STL,departure:26/11/2026TANYT&leg2=from:STL,to:IPT,departure:03/12/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"PD"}}]) ### Be in the know Get alerts if flight prices drop or rise\* ### Book smarter Save up to 30% on select hotels after you book a flight\* ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) ## Book with confidence ### Williamsport to St. Louis Flights #### The easy way to book your flights from Williamsport to St. Louis With Expedia, it’s simple to find and book flights to St. Louis from Williamsport whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from airlines that cover this route. There are nonstop flights to Lambert-St. Louis Intl., too. Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Williamsport to St. Louis today, tomorrow, or this week. #### Save dollars with cheap flights from Williamsport Regional, IPT to Lambert-St. Louis Intl., STL Sort your search results by price to find great deals on your flight from Williamsport to St. Louis—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to St. Louis from Williamsport currently is just rising to . Here are more money-saving tips: - Fly in when flight prices are normally at their lowest - Book about a month to 6 weeks before you travel for the best prices to St. Louis - Avoid peak season and weekends when flights can cost more - Early morning and late-night flights are sometimes cheaper, so try varying your travel times - One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! #### Reasons to choose Expedia for your flight to St. Louis from Williamsport Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to St. Louis with Expedia today. ## Travel information | Origin airport | Williamsport, PA | | ------------------- | --------------------------------------- | | Destination airport | Lambert-St. Louis International Airport | | Distance | 1,177 km away | ## Explore a world of travel with Expedia - [Flights](?equalTargetTab=tab-0) - [Flights from Hamilton (HLT) to St. Louis (STL)](https://www.expedia.ca/lp/flights/hlt/stl/hamilton-to-st-louis) - [Flights from Sarnia (YZR) to St. Louis (STL)](https://www.expedia.ca/lp/flights/yzr/stl/sarnia-to-st-louis) - [Flights from Kansas City (MCI) to St. Louis (STL)](https://www.expedia.ca/lp/flights/mci/stl/kansas-city-to-st-louis) - [Flights from Thunder Bay (YQT) to St. Louis (STL)](https://www.expedia.ca/lp/flights/yqt/stl/thunder-bay-to-st-louis) - [Flights from Montreal (YUL) to St. Louis (STL)](https://www.expedia.ca/lp/flights/yul/stl/montreal-to-st-louis) - [Flights from Nashville (BNA) to St. Louis (STL)](https://www.expedia.ca/lp/flights/bna/stl/nashville-to-st-louis) - [Flights from Flint (FNT) to St. Louis (STL)](https://www.expedia.ca/lp/flights/fnt/stl/flint-to-st-louis) - [Flights from Phoenix (PHX) to St. Louis (STL)](https://www.expedia.ca/lp/flights/phx/stl/phoenix-to-st-louis) - [Flights from Bellingham (BLI) to St. Louis (STL)](https://www.expedia.ca/lp/flights/bli/stl/bellingham-to-st-louis) - [Flights from Moncton (YQM) to St. Louis (STL)](https://www.expedia.ca/lp/flights/yqm/stl/moncton-to-st-louis) - [Flights from Spokane (GEG) to St. Louis (STL)](https://www.expedia.ca/lp/flights/geg/stl/spokane-to-st-louis) - [Flights from Chicago (ORD) to St. Louis (STL)](https://www.expedia.ca/lp/flights/ord/stl/chicago-to-st-louis) - [Flights from Sault Ste. 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[Flights from Vancouver (YVR) to St. Louis (STL)](https://www.expedia.ca/lp/flights/yvr/stl/vancouver-to-st-louis) - [Flights from Pittsburgh (PIT) to St. Louis (STL)](https://www.expedia.ca/lp/flights/pit/stl/pittsburgh-to-st-louis) - [Flights from Minneapolis (MSP) to St. Louis (STL)](https://www.expedia.ca/lp/flights/msp/stl/minneapolis-to-st-louis) - [Flights from Orange County (SNA) to St. Louis (STL)](https://www.expedia.ca/lp/flights/sna/stl/orange-county-to-st-louis) - [Flights from Grand Forks (GFK) to St. Louis (STL)](https://www.expedia.ca/lp/flights/gfk/stl/grand-forks-to-st-louis) - [Flights from Philadelphia (PHL) to St. Louis (STL)](https://www.expedia.ca/lp/flights/phl/stl/philadelphia-to-st-louis) - [Flights from New Orleans (MSY) to St. Louis (STL)](https://www.expedia.ca/lp/flights/msy/stl/new-orleans-to-st-louis) - [Flights from Kitchener (YKF) to St. Louis (STL)](https://www.expedia.ca/lp/flights/ykf/stl/kitchener-to-st-louis) - [Flights from Columbus (CMH) to St. Louis (STL)](https://www.expedia.ca/lp/flights/cmh/stl/columbus-to-st-louis) - [Flights from San Antonio (SAT) to St. Louis (STL)](https://www.expedia.ca/lp/flights/sat/stl/san-antonio-to-st-louis) - [Flights from Plattsburgh (PBG) to St. Louis (STL)](https://www.expedia.ca/lp/flights/pbg/stl/plattsburgh-to-st-louis) - [Flights from Burlington (BTV) to St. Louis (STL)](https://www.expedia.ca/lp/flights/btv/stl/burlington-to-st-louis) - [Flights from Los Angeles (LAX) to St. Louis (STL)](https://www.expedia.ca/lp/flights/lax/stl/los-angeles-to-st-louis) - [Flights from Indianapolis (IND) to St. Louis (STL)](https://www.expedia.ca/lp/flights/ind/stl/indianapolis-to-st-louis) - [Flights from Saskatoon (YXE) to St. Louis (STL)](https://www.expedia.ca/lp/flights/yxe/stl/saskatoon-to-st-louis) \*Available to Expedia members. ## Other language versions ```yaml hreflang: x-default: https://www.expedia.com/lp/flights/ipt/stl/williamsport-to-st-louis en-US: https://www.expedia.com/lp/flights/ipt/stl/williamsport-to-st-louis en-TW: https://www.expedia.com.tw/en/lp/flights/ipt/stl/williamsport-to-st-louis es: https://www.expedia.com/es/lp/vuelos/ipt/stl/williamsport-a-st-louis en-CA: https://www.expedia.ca/lp/flights/ipt/stl/williamsport-to-st-louis ar: https://www.expedia.sa/lp/flights/ipt/stl/williamsport-to-st-louis en-MY: https://www.expedia.com.my/lp/flights/ipt/stl/williamsport-to-st-louis ```