Title: CA $180 Cheap Flights from Washington (IAD) 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://images.trvl-media.com/place/178248/e6aa83ce-7ad8-43a5-9d1d-b055eefa7e78.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # CA $180 Cheap Flights from Washington (IAD) to Chicago (ORD) [View CA $180 flight on Mon, Dec 8, 2025](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:IAD,to:ORD,departure:08/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:179.10&airProductToken=AQpoCjIIwYIBEgQ1MjAzGIgYIOKaASi5lv8CMJqX_wI4QkAAWAFqBUJBU0lDcghOVkFJVlNCWAoyCMGCARIEMjU3NhjimgEgrhwogZj_AjCKmf8COEJAAVgBagVCQVNJQ3IITlZBSVZTQlgSCggBEAEYASoCQUEYASIECAEQASgCKAMoBDAL) - [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 Washington Dulles International Airport (IAD) to Chicago O'Hare International Airport (ORD) - ![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:iad,to:ord,departure:14/11/2025TANYT&leg2=from:ord,to:iad,departure:21/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![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:iad,to:ord,departure:14/11/2025TANYT&leg2=from:ord,to:iad,departure:21/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F9"}}]) - ![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:iad,to:ord,departure:14/11/2025TANYT&leg2=from:ord,to:iad,departure:21/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![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:iad,to:ord,departure:14/11/2025TANYT&leg2=from:ord,to:iad,departure:21/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![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:iad,to:ord,departure:14/11/2025TANYT&leg2=from:ord,to:iad,departure:21/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) - ![Sun Country Airlines](https://a.travel-assets.com/air/airlines/sy_sq.svg) Sun Country Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:iad,to:ord,departure:14/11/2025TANYT&leg2=from:ord,to:iad,departure:21/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"SY"}}]) - ![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:iad,to:ord,departure:14/11/2025TANYT&leg2=from:ord,to:iad,departure:21/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}]) - ![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 Washington (IAD) to Chicago (ORD) Prices were available within the past 7 days and start at CA $180 for one-way flights and CA $486 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) Fri, Dec 5 - Sun, Dec 7 IAD Washington ORD Chicago CA $486 Roundtrip found 4 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:IAD,to:ORD,departure:05/12/2025TANYT&leg2=from:ORD,to:IAD,departure:07/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:485.60&airProductToken=AQpoCjIIwYIBEgQyMTQ5GIgYIOKaASiE9v4CMOH2_gI4QkAAWAFqBUJBU0lDcghTV0FJWk5CWgoyCMGCARIEMjQzOBjimgEgrhwomff-AjCi-P4COEJAAVgBagVCQVNJQ3IIU1dBSVpOQloKaAoyCMGCARIEMTc4NBiuHCDimgEo1on_AjDViv8COEJAAFgBagVCQVNJQ3IIU1dBSVpOQloKMgjBggESBDIxNDkY4poBIIgYKLSL_wIwjIz_AjhCQAFYAWoFQkFTSUNyCFNXQUlaTkJaEgoIARABGAEqAkFBGAEiBAgBEAEoAigDKAQwCw) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Fri, Dec 5 - Sun, Dec 7 IAD Washington ORD Chicago CA $486 Roundtrip found 4 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:IAD,to:ORD,departure:05/12/2025TANYT&leg2=from:ORD,to:IAD,departure:07/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:485.60&airProductToken=AQpuCjUIxJgBEgQyOTc0GIgYIOBcKIz0_gIwg_X-AjhFQABYAWoJTUFJTkJBU0lDcghYQVdOQTBCUQo1CMSYARIEMjczOBjgXCCuHCjX9v4CMNX3_gI4RUABWAFqCU1BSU5CQVNJQ3IIWEFXTkEwQlEKbgo1CMSYARIEMTE3OBiuHCDgXCj4iv8CMPCL_wI4RUAAWAFqCU1BSU5CQVNJQ3IIWEFXTkEwQlEKNQjEmAESBDE2ODcY4FwgiBgo2Y3_AjC5jv8COEVAAVgBaglNQUlOQkFTSUNyCFhBV05BMEJREgoIARABGAEqAkRMGAEiBAgBEAEoAigDKAQwAQ) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Sun, Nov 16 - Wed, Nov 19 IAD Washington ORD Chicago CA $490 Roundtrip found 4 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:IAD,to:ORD,departure:16/11/2025TANYT&leg2=from:ORD,to:IAD,departure:19/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:489.30&airProductToken=AQpwCjYIxJgBEgQ0Nzk2GIgYIOO0ASi0nP0CMJyd_QI4RUAAWAFqCU1BSU5CQVNJQ3IIWEFVTkEwQlEKNgjEmAESBDE2NTQY47QBIK4cKIGe_QIw4Z79AjhFQAFYAWoJTUFJTkJBU0lDcghYQVVOQTBCUQpwCjYIxJgBEgQxNjU0GK4cIOO0ASjuwP0CMMXB_QI4RUAAWAFqCU1BSU5CQVNJQ3IIVkFWU0gzQlEKNgjEmAESBDM3NzYY47QBIIgYKKbC_QIwg8P9AjhFQAFYAWoJTUFJTkJBU0lDcghWQVZTSDNCURIKCAEQARgBKgJETBgBIgQIARABKAIoAygEMAE) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Fri, Dec 5 - Sun, Dec 7 IAD Washington ORD Chicago CA $534 Roundtrip found 4 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:IAD,to:ORD,departure:05/12/2025TANYT&leg2=from:ORD,to:IAD,departure:07/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:534.00&airProductToken=AQpwCjYIxJgBEgQ0Nzk2GIgYIOO0ASiU8v4CMP3y_gI4RUAAWAFqCU1BSU5CQVNJQ3IIWEFXTkEwQlEKNgjEmAESBDE2NTQY47QBIK4cKOLz_gIwwPT-AjhFQAFYAWoJTUFJTkJBU0lDcghYQVdOQTBCUQpwCjYIxJgBEgQxNjU0GK4cIOO0ASiti_8CMISM_wI4RUAAWAFqCU1BSU5CQVNJQ3IIVEFXT0EwQlEKNgjEmAESBDM2OTAY47QBIIgYKOSM_wIww43_AjhFQAFYAWoJTUFJTkJBU0lDcghUQVdPQTBCURIKCAEQARgBKgJETBgBIgQIARABKAIoAygEMAE) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Fri, Dec 5 - Sun, Dec 7 IAD Washington ORD Chicago CA $539 Roundtrip found 4 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:IAD,to:ORD,departure:05/12/2025TANYT&leg2=from:ORD,to:IAD,departure:07/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:538.32&airProductToken=AQpuCjUIxJgBEgQ1MDAyGIgYIKlRKI_1_gIw4fX-AjhFQABYAWoJTUFJTkJBU0lDcghUQVdPQTBCUQo1CMSYARIENTA2OBipUSCuHCji9v4CMJL4_gI4RUABWAFqCU1BSU5CQVNJQ3IIVEFXT0EwQlESCggBEAEYASoCREwYASIECAEQASgCKAMoBDAB) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Sun, Nov 16 - Wed, Nov 19 IAD Washington ORD Chicago CA $543 Roundtrip found 4 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:IAD,to:ORD,departure:16/11/2025TANYT&leg2=from:ORD,to:IAD,departure:19/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:543.00&airProductToken=AQpnCjEIwYIBEgM5ODAYiBgg4poBKIWj_QIw4aP9AjhCQABYAWoFQkFTSUNyCExVQUlaTkJaCjIIwYIBEgQxMDM5GOKaASCuHCiVpP0CMJSl_QI4QkABWAFqBUJBU0lDcghMVUFJWk5CWgpoCjIIwYIBEgQxODc2GK4cIOKaASiMxP0CMIfF_QI4QkAAWAFqBUJBU0lDcghOVkFXVVNCWAoyCMGCARIEMTQ3MxjimgEgiBgoxcX9AjCXxv0COEJAAVgBagVCQVNJQ3IITlZBV1VTQlgSCggBEAEYASoCQUEYASIECAEQASgCKAMoBDAL) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Fri, Nov 14 - Tue, Nov 18 IAD Washington ORD Chicago CA $545 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:IAD,to:ORD,departure:14/11/2025TANYT&leg2=from:ORD,to:IAD,departure:18/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:544.10&airProductToken=AQpuCjUIxJgBEgQ1MDAyGIgYIKlRKOeI_QIwvYn9AjhFQABYAWoJTUFJTkJBU0lDcghWQVVOQTBCUQo1CMSYARIENTY3ORipUSCuHCidjP0CMM-N_QI4RUABWAFqCU1BSU5CQVNJQ3IIVkE3TkEwQkMKcAo2CMSYARIEMTY1NBiuHCDjtAEozrX9AjCltv0COEVAAFgBaglNQUlOQkFTSUNyCFhBVU5BMEJRCjYIxJgBEgQzNzc2GOO0ASCIGCiGt_0CMOO3_QI4RUABWAFqCU1BSU5CQVNJQ3IIWEFVTkEwQlESCggBEAEYASoCREwYASIECAEQASgCKAMoBDAB) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Fri, Nov 14 - Tue, Nov 18 IAD Washington ORD Chicago CA $549 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:IAD,to:ORD,departure:14/11/2025TANYT&leg2=from:ORD,to:IAD,departure:18/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:549.00&airProductToken=AQqbAQoyCMGCARIEMjM4MBiIGCDimgEoq4v9AjCWjP0COEJAAFgBagVCQVNJQ3IIUVVESlpTQloKMgjBggESBDEwNzAY4poBIMsBKJqN_QIwhY79AjhCQAFYAWoFQkFTSUNyCFFVREpaU0JaCjEIwYIBEgQzMDAyGMsBIK4cKNCR_QIw9pL9AjhCQAFYAWoFQkFTSUNyCE9VQUpYU0JYCpsBCjEIwYIBEgQyNzU3GK4cIMsBKJy6_QIwmrv9AjhCQABYAWoFQkFTSUNyCE9VQUpYU0JYCjIIwYIBEgQxMDM2GMsBIOKaASiUvv0CMI6__QI4QkABWAFqBUJBU0lDcghRVkFJS1NCWgoyCMGCARIENTE5NBjimgEgiBgowL_9AjCXwP0COEJAAVgBagVCQVNJQ3IIUVZBSUtTQloSCggBEAEYASoCQUEYASIECAEQASgCKAMoBDAL) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Fri, Dec 5 - Sun, Dec 7 IAD Washington ORD Chicago CA $554 Roundtrip found 4 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:IAD,to:ORD,departure:05/12/2025TANYT&leg2=from:ORD,to:IAD,departure:07/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:553.40&airProductToken=AQpoCjIIwYIBEgQ1MjAzGIgYIOKaASjZ9P4CMLr1_gI4QkAAWAFqBUJBU0lDcghWVkFJWk5CWgoyCMGCARIEMjMzNBjimgEgrhwo7fX-AjD19v4COEJAAVgBagVCQVNJQ3IIVlZBSVpOQloKaAoyCMGCARIEMTc4NBiuHCDimgEo1on_AjDViv8COEJAAFgBagVCQVNJQ3IIU1dBSVpOQloKMgjBggESBDIxNDkY4poBIIgYKLSL_wIwjIz_AjhCQAFYAWoFQkFTSUNyCFNXQUlaTkJaEgoIARABGAEqAkFBGAEiBAgBEAEoAigDKAQwCw) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Fri, Dec 5 - Sun, Dec 7 IAD Washington ORD Chicago CA $668 Roundtrip found 4 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:IAD,to:ORD,departure:05/12/2025TANYT&leg2=from:ORD,to:IAD,departure:07/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:667.64&airProductToken=AQpeCi0IwaYBEgMzNTEYiBggkgEo8vL-AjDb9f4COFhAAFgBagJTVnIIUUgyT0FWQk4KLQjBpgESAzQxMBiSASCuHCi1-P4CMK76_gI4WEABWAFqAlNWcghRSDJPQVVCThIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ## Find the cheapest month to fly from Washington (IAD) to Chicago (ORD) ### February is typically the cheapest month to fly From CA $153 - CA $377 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:IAD,to:ORD,departure:14/11/2025TANYT&leg2=from:ORD,to:IAD,departure:18/11/2025TANYT&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 $545](https://www.expedia.ca/Flights-Search?leg1=from:IAD,to:ORD,departure:14/11/2025TANYT&leg2=from:ORD,to:IAD,departure:18/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) Flight from Washington to Chicago (IAD - ORD) route information | Origin airport | Washington Dulles Intl. | | --- | --- | | Destination airport | O'Hare Intl. | | Airlines serving | American Airlines, Delta | | Roundtrip price | CA $486 | | Distance | 940 km | | Average flight time | 1 hour 13 mins | ## Chantilly to Chicago Flights **The easy way to book your flights from Washington to Chicago**  With Expedia, it’s simple to find and book flights to Chicago from Washington 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 Washington to Chicago today, tomorrow, or this week.   **Save dollars with cheap flights from Washington Dulles Intl., IAD to O'Hare Intl., ORD**  Sort your search results by price to find great deals on your flight from Washington to Chicago—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Chicago from Washington currently is just CA $486 rising to CA $668.   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 Washington**  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 IAD to O'Hare Airport? > Based on fares advertised within the last 7 days on Expedia for flights departing within the next year, round-trip journeys between Washington Dulles Intl. Airport (IAD) and ORD start from CA $486. Make your booking today to secure 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 Washington Dulles Intl. Airport (IAD) to ORD? > Every air carrier has its own terms and conditions. If you do decide to cancel, follow the easy instructions on our [Customer Service Portal](https://www.expedia.ca/helpcenter). ### How do I find cheap flights from Washington Dulles Intl. Airport (IAD) to ORD that have flexible change policies? > Flights from IAD to O'Hare Airport offering flexible change policies are available with many airlines. Simply use our "No change fees" filter during your search. You'll only need to pay the cost difference between flights, with no extra fees to worry about. ### How many hours is the flight from Washington Dulles Intl. Airport (IAD) to O'Hare Intl. Airport (ORD)? > With the flight time between Dulles Intl. Airport and ORD an easy 2 hours and 15 minutes, you'll be exploring the sights of Chicago in the blink of an eye. ### How far is the flight from Dulles Intl. Airport to O'Hare Airport? > With a flight distance of 950 kilometres, it's only a short hop from Dulles Intl. Airport to O'Hare Intl. Airport (ORD). It might be a quick journey, but it's still worth bringing something to keep you busy on board. ### Which airlines fly direct from Dulles Intl. Airport to O'Hare Intl. Airport (ORD)? > Flying directly from Dulles Intl. Airport to ORD is simple with United Airlines (UA). This top carrier operates 121 flights each month. ### Are Washington Dulles Intl. Airport (IAD) to O'Hare Intl. Airport (ORD) flight tickets cheaper when they're purchased at the last minute? > It is possible to find an awesome last-minute deal from IAD to ORD, but it's also possible to miss out altogether! As many airlines release seats up to 12 months in advance, it's worthwhile keeping an eye on fares early and being ready to pounce when you spot a good bargain. Expedia compares carrier prices and updates flight deals often, so you can be sure you're always getting the latest offers. ## 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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