Title: CA $64 Cheap Flights from St. Louis (STL) to Chicago (ORD) - Expedia.ca ![City of Chicago. Image of Chicago downtown and Chicago River with bridges at sunny summer day](https://images.trvl-media.com/place/178248/e6aa83ce-7ad8-43a5-9d1d-b055eefa7e78.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://a.travel-assets.com/travel-assets-manager/fallback-images-brand/bex_flights_v2.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # CA $64 Cheap Flights from St. Louis (STL) to Chicago (ORD) [View CA $64 flight on Tue, Nov 4, 2025](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:STL,to:ORD,departure:04/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:63.20&airProductToken=AQozCjEIwYIBEgQ0NTUxGPJcIK4cKPCV_AIwypb8AjhCQABYAWoFQkFTSUNyCE9WQUlWU0JYEgoIARABGAEqAkFBGAEiBAgBEAEoAigDKAQwCw) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Lambert-St. Louis International Airport (STL) to Chicago O'Hare International Airport (ORD) - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:stl,to:ord,departure:21/10/2025TANYT&leg2=from:ord,to:stl,departure:28/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![Delta](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.ca/Flights-Search?leg1=from:stl,to:ord,departure:21/10/2025TANYT&leg2=from:ord,to:stl,departure:28/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![United](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.ca/Flights-Search?leg1=from:stl,to:ord,departure:21/10/2025TANYT&leg2=from:ord,to:stl,departure:28/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![Southwest Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WN.svg) Southwest Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:stl,to:ord,departure:21/10/2025TANYT&leg2=from:ord,to:stl,departure:28/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}]) - ![Southern Airways](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_9X.svg) Southern Airways [](https://www.expedia.ca/Flights-Search?leg1=from:stl,to:ord,departure:21/10/2025TANYT&leg2=from:ord,to:stl,departure:28/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"9X"}}]) - ![Frontier Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_F9.svg) Frontier Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:stl,to:ord,departure:21/10/2025TANYT&leg2=from:ord,to:stl,departure:28/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F9"}}]) - ![Alaska Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AS.svg) Alaska Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:stl,to:ord,departure:21/10/2025TANYT&leg2=from:ord,to:stl,departure:28/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) ## Cheap flights from St. Louis (STL) to Chicago (ORD) Prices were available within the past 7 days and start at CA $64 for one-way flights and CA $211 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Wed, Dec 31 - Sun, Jan 18 STL St. Louis ORD Chicago CA $211 Roundtrip found 6 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:ORD,departure:31/12/2025TANYT&leg2=from:ORD,to:STL,departure:18/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:210.50&airProductToken=AQoiCiAIwYIBEgQ0MzEwGPJcIK4cKNaYgQMwrZmBAzhPQABYAQoiCiAIwYIBEgQzNzY0GK4cIPJcKKTkggMw9-SCAzhPQABYARIKCAEQARgBKgJBQRgBIgQIARABKAgoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Dec 31 - Sat, Jan 17 STL St. Louis ORD Chicago CA $211 Roundtrip found 6 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:ORD,departure:31/12/2025TANYT&leg2=from:ORD,to:STL,departure:17/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:210.50&airProductToken=AQoiCiAI1YIBEgQ0MTgzGPJcIK4cKI2YgQMw7JiBAzhHQABYAQoiCiAI1YIBEgQ0NDkxGK4cIPJcKNTYggMwtdmCAzhHQABYARIKCAEQARgBKgJVQRgBIgQIARABKAQwAQ) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Dec 31 - Tue, Jan 13 STL St. Louis ORD Chicago CA $215 Roundtrip found 6 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:ORD,departure:31/12/2025TANYT&leg2=from:ORD,to:STL,departure:13/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:214.80&airProductToken=AQoiCiAI1YIBEgQ0MTgzGPJcIK4cKI2YgQMw7JiBAzhHQABYAQoiCiAI1YIBEgQzNTAyGK4cIPJcKNSsggMwrq2CAzhHQABYARIKCAEQARgBKgJVQRgBIgQIARABKAQwAQ) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Dec 30 - Tue, Jan 13 STL St. Louis ORD Chicago CA $220 Roundtrip found 6 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:ORD,departure:30/12/2025TANYT&leg2=from:ORD,to:STL,departure:13/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:219.10&airProductToken=AQoiCiAI1YIBEgQ1NTIzGPJcIK4cKOORgQMwy5KBAzhHQABYAQoiCiAI1YIBEgQzNTAyGK4cIPJcKNSsggMwrq2CAzhHQABYARIKCAEQARgBKgJVQRgBIgQIARABKAQwAQ) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Tue, Dec 30 - Sun, Jan 18 STL St. Louis ORD Chicago CA $243 Roundtrip found 6 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:ORD,departure:30/12/2025TANYT&leg2=from:ORD,to:STL,departure:18/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:242.80&airProductToken=AQoiCiAIwYIBEgQzNDYxGPJcIK4cKLmSgQMwkpOBAzhPQABYAQoiCiAIwYIBEgQzNzY0GK4cIPJcKKTkggMw9-SCAzhPQABYARIKCAEQARgBKgJBQRgBIgQIARABKAgoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Tue, Dec 30 - Thu, Jan 15 STL St. Louis ORD Chicago CA $247 Roundtrip found 6 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:ORD,departure:30/12/2025TANYT&leg2=from:ORD,to:STL,departure:15/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:246.30&airProductToken=AQpECiAIxJgBEgQxMzM5GPJcIOBcKLWQgQMwl5GBAzhFQABYAQogCMSYARIEMTEzORjgXCCuHCiLkoEDMIKTgQM4RUABWAEKRAogCMSYARIEMTI2NBiuHCDgXCjmv4IDMOrAggM4RUAAWAEKIAjEmAESBDE0MDAY4Fwg8lwopMGCAzCSwoIDOEVAAVgBEgoIARABGAEqAkRMGAEiBAgBEAEoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, Jan 21 - Thu, Feb 5 STL St. Louis ORD Chicago CA $248 Roundtrip found 6 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:ORD,departure:21/01/2026TANYT&leg2=from:ORD,to:STL,departure:05/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:247.10&airProductToken=AQoiCiAI1YIBEgQ0Mzk1GPJcIK4cKPCFgwMwz4aDAzhLQABYAQoiCiAI1YIBEgQzNTAyGK4cIPJcKLSvhAMwjrCEAzhHQABYARIKCAEQARgBKgJVQRgBIgQIARABKAQwAQ) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Sat, Dec 6 - Tue, Dec 16 STL St. Louis ORD Chicago CA $256 Roundtrip found 6 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:ORD,departure:06/12/2025TANYT&leg2=from:ORD,to:STL,departure:16/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:256.00&airProductToken=AQpGCiEIxJgBEgQyODY4GPJcIOO0ASiNgP8CMOqA_wI4RUAAWAEKIQjEmAESBDQwNDAY47QBIK4cKIeC_wIw3oL_AjhFQAFYAQpECiAIxJgBEgQxMTQ3GK4cIOBcKOvw_wIw5PH_AjhFQABYAQogCMSYARIEMTQ4NRjgXCDyXCio8v8CMI7z_wI4RUABWAESCggBEAEYASoCREwYASIECAEQASgEMAE) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Mon, Jan 26 - Sun, Feb 15 STL St. Louis ORD Chicago CA $257 Roundtrip found 6 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:ORD,departure:26/01/2026TANYT&leg2=from:ORD,to:STL,departure:15/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:256.70&airProductToken=AQoiCiAI1YIBEgQ0Mzg5GPJcIK4cKL29gwMwnL6DAzhHQABYAQoiCiAI1YIBEgQxMDc0GK4cIPJcKP-ihQMw1KOFAzhLQABYARIKCAEQARgBKgJVQRgBIgQIARABKAQwAQ) ![Southern Airways Express](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/9X.gif) Fri, Oct 17 - Sun, Oct 19 STL St. Louis ORD Chicago CA $312 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:STL,to:ORD,departure:17/10/2025TANYT&leg2=from:ORD,to:STL,departure:19/10/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:312.00&airProductToken=AQpQCiYIubABEgM0NjAY8lwglGoomM76AjDLzvoCOEtAAFgBcgVLMTROQwomCLmwARIDNDgxGJRqIK4cKPfO-gIw38_6AjhLQAFYAXIFSzBDTlgKUAomCLmwARIDNDgyGK4cIJRqKLvi-gIwo-P6AjhLQABYAXIFSzBDTlgKJgi5sAESAzQ2MxiUaiDyXCj95foCMK_m-gI4S0ABWAFyBUsxNE5DEgoIARABGAEqAkhSGAEiBAgBEAEoAigDKAQwAQ) ## Find the cheapest month to fly from St. Louis (STL) to Chicago (ORD) ### October is typically the cheapest month to fly From CA $107 - CA $371 per traveller. ## Alternative airports near Chicago Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.ca/Flights-Search?leg1=from:STL,to:ORD,departure:21/10/2025TANYT&leg2=from:ORD,to:STL,departure:27/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) ORD O'Hare Intl. Cheapest 23 min [Flights from CA $341](https://www.expedia.ca/Flights-Search?leg1=from:STL,to:ORD,departure:21/10/2025TANYT&leg2=from:ORD,to:STL,departure:27/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) Flight from St. Louis to Chicago (STL - ORD) route information | Origin airport | Lambert-St. Louis Intl. | | --- | --- | | Destination airport | O'Hare Intl. | | Airlines serving | American Airlines, Delta, Southern Airways Express, United | | Roundtrip price | CA $210 | | Distance | 413 km | | Average flight time | 1 hour 25 mins | ## St. Louis to Chicago Flights **The easy way to book your flights from St. Louis to Chicago**  With Expedia, it’s simple to find and book flights to Chicago from St. Louis whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to O'Hare 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 St. Louis to Chicago today, tomorrow, or this week.   **Save dollars with cheap flights from Lambert-St. Louis Intl., STL to O'Hare Intl., ORD**  Sort your search results by price to find great deals on your flight from St. Louis to Chicago—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Chicago from St. Louis currently is just CA $211 rising to CA $312.   Here are more money-saving tips:  - Fly in December when flight prices are normally at their lowest  - Book about a month to 6 weeks before you travel for the best prices to Chicago   - 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 Chicago from St. Louis**  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 Chicago with Expedia today. ## Frequently asked questions ### How much is a flight from Lambert Field to O'Hare Airport? > Based on airfares listed within the last 7 days on Expedia for flights departing within the next year, round-trip flights from Lambert Field to O'Hare Airport start from CA $211. Book ASAP to get the best price for your trip. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from Lambert Field to ORD? > Most flights can be cancelled online, but every air carrier has different terms and conditions. If you do have to cancel your flight, visit our [Customer Service Portal](https://www.expedia.ca/helpcenter) and follow the instructions. ### How do I find cheap flights from Lambert-St. Louis Intl. Airport (STL) to O'Hare Airport that have flexible change policies? > Flights from Lambert Field to O'Hare Airport offering flexible change policies are available with many airlines. Simply use our "No change fees" filter when searching. You'll only need to cover the cost difference between flights, with no additional fees to worry about. ### How many hours is the flight from Lambert-St. Louis Intl. Airport (STL) to O'Hare Intl. Airport (ORD)? > Sit back, pick an in-flight movie and 1 hour and 31 minutes will pass by in the blink of an eye. That's how long it takes to fly to O'Hare Intl. Airport (ORD) from Lambert Field. ### How far is the flight from Lambert-St. Louis Intl. Airport (STL) to O'Hare Intl. Airport (ORD)? > With a flight distance of 420 kilometres, it's just a hop from Lambert-St. Louis Intl. Airport (STL) to O'Hare Intl. Airport (ORD). It might be a quick flight, but it's still worth bringing along something to keep you entertained on board. ### Which airlines fly direct from Lambert-St. Louis Intl. Airport (STL) to O'Hare Intl. Airport (ORD)? > There are several airlines that travel directly from STL to O'Hare Intl. Airport (ORD). United Airlines (UA) is a top choice, offering 213 services on this route each month. American Airlines (AA) is also worth a look. It operates 121 flights every month. Between these two airlines, you'll be able to find a great deal from St. Louis to Chicago. ### Are Lambert Field to ORD flight tickets cheaper when they're purchased at the last minute? > Late planners can sometimes pick up a bargain, with some super cheap airfares from STL to ORD cropping up a few weeks before the departure date. If you'd rather plan ahead, Expedia compares and updates the best flight deals regularly — as early as a year in advance in some cases. It does depend on the carrier though, as not all airlines issue prices so far in advance. ## Explore a world of travel with Expedia - Flights ### Flights - [Flights from Calgary to Rosemont](https://www.expedia.ca/lp/flights/178245/7581/calgary-to-rosemont) - [Flights from Denver to Northwest Chicago](https://www.expedia.ca/lp/flights/178254/6350697/denver-to-northwest-chicago) - [Flights from Los Angeles to Evanston](https://www.expedia.ca/lp/flights/178280/8049/los-angeles-to-evanston) - [Flights from Mexico City to Northwest Chicago](https://www.expedia.ca/lp/flights/178285/6350697/mexico-city-to-northwest-chicago) - [Flights from New York to Evanston](https://www.expedia.ca/lp/flights/178293/8049/new-york-to-evanston) - [Flights from Ottawa to Evanston](https://www.expedia.ca/lp/flights/178296/8049/ottawa-to-evanston) - [Flights from Philadelphia to Rosemont](https://www.expedia.ca/lp/flights/178297/7581/philadelphia-to-rosemont) - [Flights from Portland to Rosemont](https://www.expedia.ca/lp/flights/178299/7581/portland-to-rosemont) - 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