Title: $1,715 Cheap flights from Cardiff to Chicago (CWL to MDW) - Expedia.com ![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) # $1,715 Cheap Flights from Cardiff (CWL) to Chicago (MDW) [View $1,715 flight on Mon, Jan 4, 2027](https://expedia.com/Flights-Search?trip=oneway&leg1=from:CWL,to:MDW,departure:1/4/2027TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1714.83&airProductToken=AQqeAQoyCNamARIENjk2MhjCXSCAkwEo69ChAzC70aEDOFRAAFgBagVMSUdIVHIIUlkyMEJETEEKMwjWpgESBDM5NDYYgJMBIOO0ASjQ2aEDMPHdoQM4VEABWAFqBUxJR0hUcghSWTIwQkRMQQozCNamARIEMjQ1NBjjtAEg7LABKPPeoQMwxd-hAzhUQAFYAWoFTElHSFRyCFJZMjBCRExBEgwIARABGAEqAlZTMgAYASIECAEQASgCKAMoBDAB) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travelers 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 Cardiff International Airport (CWL) to Chicago Midway Airport (MDW) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.com/Flights-Search?leg1=from:CWL,to:MDW,departure:3/19/2026TANYT&leg2=from:MDW,to:CWL,departure:3/26/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AF.svg) Air France [](https://www.expedia.com/Flights-Search?leg1=from:CWL,to:MDW,departure:3/19/2026TANYT&leg2=from:MDW,to:CWL,departure:3/26/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AF"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_KL.svg) KLM [](https://www.expedia.com/Flights-Search?leg1=from:CWL,to:MDW,departure:3/19/2026TANYT&leg2=from:MDW,to:CWL,departure:3/26/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"KL"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_VS.svg) Virgin Atlantic [](https://www.expedia.com/Flights-Search?leg1=from:CWL,to:MDW,departure:3/19/2026TANYT&leg2=from:MDW,to:CWL,departure:3/26/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"VS"}}]) - ![](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\* - ![](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\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our OneKeyCash [Learn about One Key](https://www.expedia.com/welcome-one-key) ## Cheap Flights from Cardiff to Chicago (CWL-MDW) Prices were available within the past 7 days and start at $1,715 for one-way flights and $1,145 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Wed, Jun 10 - Wed, Jun 17 CWL Cardiff MDW Chicago $1,145 Roundtrip found 18 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CWL,to:MDW,departure:6/10/2026TANYT&leg2=from:MDW,to:CWL,departure:6/17/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1144.47&airProductToken=AQq1AQpCCMSYARIEOTQ5MxjCXSCAkwEo7aiPAzC4qY8DOEVAAFgBaglNQUlOQkFTSUNyCFVZNDhUQkxBegoIy5gBEgQxMDg4CjYIxJgBEgMxMzcYgJMBIOO0ASjOqo8DMNCujwM4RUABWAFqCU1BSU5CQVNJQ3IIVVk0OFRCTEEKNwjEmAESBDQ2ODQY47QBIOywASjptY8DMLa2jwM4RUABWAFqCU1BSU5CQVNJQ3IIVVk0OFRCTEEKqQEKMwjEmAESBDQ2OTAY7LABIOO0ASij_o8DMOv-jwM4RUAAWAFqBUxJR0hUcghOWTRFVERMQQo-CNamARIEMzk0NRjjtAEggJMBKOz_jwMwzIOQAzhUQAFYAWoFTElHSFRyCE5ZNEVURExBegkIxJgBEgMxMzYKMgjLmAESBDEwOTEYgJMBIMJdKMGFkAMwkYaQAzhSQAFYAWoFTElHSFRyCE5ZNEVURExBEgoIARABGAEqAkRMGAEiBAgBEAEoAigDKAQwAQ) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Wed, Jun 10 - Wed, Jun 17 CWL Cardiff MDW Chicago $1,145 Roundtrip found 18 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CWL,to:MDW,departure:6/10/2026TANYT&leg2=from:MDW,to:CWL,departure:6/17/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1144.81&airProductToken=AQqzAQpCCMSYARIEOTQ5MxjCXSCAkwEo7aiPAzC4qY8DOEVAAFgBaglNQUlOQkFTSUNyCFVZNDhUQkxBegoIy5gBEgQxMDg4CjUIxJgBEgMxNjUYgJMBIMx8KNiqjwMw866PAzhFQAFYAWoJTUFJTkJBU0lDcghVWTQ4VEJMQQo2CMSYARIENDcxMhjMfCDssAEo0LWPAzCyto8DOEVAAVgBaglNQUlOQkFTSUNyCFVZNDhUQkxBCqkBCjMIxJgBEgQ0NjkwGOywASDjtAEoo_6PAzDr_o8DOEVAAFgBagVMSUdIVHIITlk0RVRETEEKPgjWpgESBDM5NDUY47QBIICTASjs_48DMMyDkAM4VEABWAFqBUxJR0hUcghOWTRFVERMQXoJCMSYARIDMTM2CjIIy5gBEgQxMDkxGICTASDCXSjBhZADMJGGkAM4UkABWAFqBUxJR0hUcghOWTRFVERMQRIKCAEQARgBKgJETBgBIgQIARABKAIoAygEMAE) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Wed, Jun 10 - Wed, Jun 17 CWL Cardiff MDW Chicago $1,153 Roundtrip found 18 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CWL,to:MDW,departure:6/10/2026TANYT&leg2=from:MDW,to:CWL,departure:6/17/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1152.47&airProductToken=AQq1AQpCCMSYARIEOTQ5MxjCXSCAkwEo7aiPAzC4qY8DOEVAAFgBaglNQUlOQkFTSUNyCFVZNDhUQkxBegoIy5gBEgQxMDg4CjYIxJgBEgMxMzcYgJMBIOO0ASjOqo8DMNCujwM4RUABWAFqCU1BSU5CQVNJQ3IIVVk0OFRCTEEKNwjEmAESBDQ2ODQY47QBIOywASjptY8DMLa2jwM4RUABWAFqCU1BSU5CQVNJQ3IIVVk0OFRCTEEKpwEKMgjEmAESBDEwNjMY7LABIOBcKOf6jwMw3PuPAzhFQABYAWoFTElHSFRyCE5ZNEVURExBCj0I1qYBEgQ0MDU0GOBcIICTASjS_I8DMNCAkAM4VEABWAFqBUxJR0hUcghOWTRFVERMQXoJCMSYARIDMDcwCjIIy5gBEgQxMDg3GICTASDCXSiEgpADMM-CkAM4UkABWAFqBUxJR0hUcghOWTRFVERMQRIKCAEQARgBKgJETBgBIgQIARABKAIoAygEMAE) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Wed, Jun 10 - Wed, Jun 17 CWL Cardiff MDW Chicago $1,153 Roundtrip found 18 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CWL,to:MDW,departure:6/10/2026TANYT&leg2=from:MDW,to:CWL,departure:6/17/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1152.81&airProductToken=AQqzAQpCCMSYARIEOTQ5MxjCXSCAkwEo7aiPAzC4qY8DOEVAAFgBaglNQUlOQkFTSUNyCFVZNDhUQkxBegoIy5gBEgQxMDg4CjUIxJgBEgMxNjUYgJMBIMx8KNiqjwMw866PAzhFQAFYAWoJTUFJTkJBU0lDcghVWTQ4VEJMQQo2CMSYARIENDcxMhjMfCDssAEo0LWPAzCyto8DOEVAAVgBaglNQUlOQkFTSUNyCFVZNDhUQkxBCqcBCjIIxJgBEgQxMDYzGOywASDgXCjn-o8DMNz7jwM4RUAAWAFqBUxJR0hUcghOWTRFVERMQQo9CNamARIENDA1NBjgXCCAkwEo0vyPAzDQgJADOFRAAVgBagVMSUdIVHIITlk0RVRETEF6CQjEmAESAzA3MAoyCMuYARIEMTA4NxiAkwEgwl0ohIKQAzDPgpADOFJAAVgBagVMSUdIVHIITlk0RVRETEESCggBEAEYASoCREwYASIECAEQASgCKAMoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Wed, Jun 10 - Wed, Jun 17 CWL Cardiff MDW Chicago $1,208 Roundtrip found 18 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CWL,to:MDW,departure:6/10/2026TANYT&leg2=from:MDW,to:CWL,departure:6/17/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1207.47&airProductToken=AQq1AQpCCMSYARIEOTQ5MxjCXSCAkwEo7aiPAzC4qY8DOEVAAFgBaglNQUlOQkFTSUNyCFVZNDhUQkxBegoIy5gBEgQxMDg4CjYIxJgBEgMxMzcYgJMBIOO0ASjOqo8DMNCujwM4RUABWAFqCU1BSU5CQVNJQ3IIVVk0OFRCTEEKNwjEmAESBDQ2ODQY47QBIOywASjptY8DMLa2jwM4RUABWAFqCU1BSU5CQVNJQ3IIVVk0OFRCTEEKvgEKPgjBjAESBDg3MzUY7LABIOBcKP37jwMw9vyPAzhOQABYAWoFTElHSFRyCE5ZNDhUQkxBegoIxJgBEgQyNDE3CjwIwYwBEgQzNjU1GOBcIICTASjR_o8DMN6CkAM4TkABWAFqBUxJR0hUcghOWTQ4VEJMQXoICMSYARICNzQKPgjBjAESBDgzMzUYgJMBIMJdKMGFkAMwkYaQAzhSQAFYAWoFTElHSFRyCE5ZNDhUQkxBegoIy5gBEgQxMDkxEgoIARABGAEqAkRMGAEiBAgBEAEoAigDKAQwAQ) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Wed, Jun 10 - Wed, Jun 17 CWL Cardiff MDW Chicago $1,208 Roundtrip found 18 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CWL,to:MDW,departure:6/10/2026TANYT&leg2=from:MDW,to:CWL,departure:6/17/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1207.81&airProductToken=AQqzAQpCCMSYARIEOTQ5MxjCXSCAkwEo7aiPAzC4qY8DOEVAAFgBaglNQUlOQkFTSUNyCFVZNDhUQkxBegoIy5gBEgQxMDg4CjUIxJgBEgMxNjUYgJMBIMx8KNiqjwMw866PAzhFQAFYAWoJTUFJTkJBU0lDcghVWTQ4VEJMQQo2CMSYARIENDcxMhjMfCDssAEo0LWPAzCyto8DOEVAAVgBaglNQUlOQkFTSUNyCFVZNDhUQkxBCr4BCj4IwYwBEgQ4NzM1GOywASDgXCj9-48DMPb8jwM4TkAAWAFqBUxJR0hUcghOWTQ4VEJMQXoKCMSYARIEMjQxNwo8CMGMARIEMzY1NRjgXCCAkwEo0f6PAzDegpADOE5AAVgBagVMSUdIVHIITlk0OFRCTEF6CAjEmAESAjc0Cj4IwYwBEgQ4MzM1GICTASDCXSjBhZADMJGGkAM4UkABWAFqBUxJR0hUcghOWTQ4VEJMQXoKCMuYARIEMTA5MRIKCAEQARgBKgJETBgBIgQIARABKAIoAygEMAE) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Wed, Jun 10 - Wed, Jun 17 CWL Cardiff MDW Chicago $1,280 Roundtrip found 18 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CWL,to:MDW,departure:6/10/2026TANYT&leg2=from:MDW,to:CWL,departure:6/17/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1279.74&airProductToken=AQqyAQpCCMSYARIEOTQ5MxjCXSCAkwEo7aiPAzC4qY8DOEVAAFgBaglNQUlOQkFTSUNyCEtZNDhUQkxBegoIy5gBEgQxMDg4CjQIxJgBEgI3NRiAkwEg4FwoiKqPAzDBro8DOEVAAVgBaglNQUlOQkFTSUNyCEtZNDhUQkxBCjYIxJgBEgQxNzI4GOBcIOywASiSuY8DMIW6jwM4RUABWAFqCU1BSU5CQVNJQ3IIS1k0OFRCTEEKqQEKMwjEmAESBDQ2OTAY7LABIOO0ASij_o8DMOv-jwM4RUAAWAFqBUxJR0hUcghOWTRFVERMQQo-CNamARIEMzk0NRjjtAEggJMBKOz_jwMwzIOQAzhUQAFYAWoFTElHSFRyCE5ZNEVURExBegkIxJgBEgMxMzYKMgjLmAESBDEwOTEYgJMBIMJdKMGFkAMwkYaQAzhSQAFYAWoFTElHSFRyCE5ZNEVURExBEgoIARABGAEqAkRMGAEiBAgBEAEoAigDKAQwAQ) ![Virgin Atlantic](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/VS.gif) Mon, Mar 30 - Mon, Apr 6 CWL Cardiff MDW Chicago $1,304 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CWL,to:MDW,departure:3/30/2026TANYT&leg2=from:MDW,to:CWL,departure:4/6/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1303.20&airProductToken=AQrFAQpACNamARIENjk2MRjCXSCAkwEor4KJAzD_gokDOE5AAFgBagdDTEFTU0lDcghOWTRFVERTQXoKCMuYARIEMTA5Mgo_CNamARIENDA1NRiAkwEg4Fwos4mJAzDsjYkDOE5AAVgBagdDTEFTU0lDcghOWTRFVERTQXoJCMSYARIDMDcxCkAI1qYBEgQyMTM3GOBcIOywASjLj4kDML6QiQM4TkABWAFqB0NMQVNTSUNyCE5ZNEVURFNBegoIxJgBEgQyMDYwCsUBCkAI1qYBEgQzNDUzGOywASDMfCj01IkDMNjViQM4RUAAWAFqB0NMQVNTSUNyCEVZNDhURFNBegoIxJgBEgQzNzk5Cj8I1qYBEgQzOTQ5GMx8IICTASiy4IkDMKbkiQM4RUABWAFqB0NMQVNTSUNyCEVZNDhURFNBegkIxJgBEgMxNjIKQAjWpgESBDY5NjMYgJMBIMJdKMTuiQMwj--JAzhFQAFYAWoHQ0xBU1NJQ3IIRVk0OFREU0F6CgjLmAESBDEwODcSCggBEAEYASoCVlMYASIECAEQASgCKAMoBDAB) ![KLM](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/KL.gif) Wed, Jun 10 - Wed, Jun 17 CWL Cardiff MDW Chicago $1,310 Roundtrip found 18 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CWL,to:MDW,departure:6/10/2026TANYT&leg2=from:MDW,to:CWL,departure:6/17/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1309.33&airProductToken=AQqmAQo2CMuYARIEMTA4OBjCXSCAkwEo7aiPAzC4qY8DOFFAAFgBaglNQUlOQkFTSUNyCExZNDhUQkxBCjQIxJgBEgI3NRiAkwEg4FwoiKqPAzDBro8DOEVAAVgBaglNQUlOQkFTSUNyCExZNDhUQkxBCjYIxJgBEgQxMDc2GOBcIOywASiysI8DMKWxjwM4RUABWAFqCU1BSU5CQVNJQ3IITFk0OFRCTEEKvgEKPgjBjAESBDg3MzUY7LABIOBcKP37jwMw9vyPAzhOQABYAWoFTElHSFRyCE5ZNDhUQkxBegoIxJgBEgQyNDE3CjwIwYwBEgQzNjU1GOBcIICTASjR_o8DMN6CkAM4TkABWAFqBUxJR0hUcghOWTQ4VEJMQXoICMSYARICNzQKPgjBjAESBDgzMzUYgJMBIMJdKMGFkAMwkYaQAzhSQAFYAWoFTElHSFRyCE5ZNDhUQkxBegoIy5gBEgQxMDkxEgoIARABGAEqAkRMGAEiBAgBEAEoAigDKAQwAQ) ![Air France](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AF.gif) Sun, Jun 7 - Sat, Jun 13 CWL Cardiff MDW Chicago $1,736 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CWL,to:MDW,departure:6/7/2026TANYT&leg2=from:MDW,to:CWL,departure:6/13/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1735.03&airProductToken=AQq-AQo-CMGMARIEODM0MhjCXSCAkwEokoePAzDdh48DOFVAAFgBagVMSUdIVHIIVVk1MEtCTEF6CgjLmAESBDEwODgKPAjBjAESBDM2NjcYgJMBIOBcKKiIjwMw4YyPAzhVQAFYAWoFTElHSFRyCFVZNTBLQkxBeggIxJgBEgI3NQo-CMGMARIENjg0MhjgXCDssAEo0o6PAzDFj48DOFVAAVgBagVMSUdIVHIIVVk1MEtCTEF6CgjEmAESBDEwNzYKwQEKPwjBjAESBDI4NTgY7LABIOO0ASj4zo8DMMDPjwM4UkAAWAFqBUxJR0hUcghSWTVFVEJMQXoKCMSYARIENDY4OAo-CMGMARIENTYwNBjjtAEggJMBKOzSjwMwzNaPAzhSQAFYAWoFTElHSFRyCFJZNUVUQkxBegkIxJgBEgMxMzYKPgjBjAESBDgzMzUYgJMBIMJdKMHYjwMwkdmPAzhFQAFYAWoFTElHSFRyCFJZNUVUQkxBegoIy5gBEgQxMDkxEgoIARABGAEqAkFGGAEiBAgBEAEoAigDKAQwAQ) ![](https://forever.travel-assets.com/flex/flexmanager/images/2026/02/06/expedia-sale-2026-desktop-us-ca.jpg?impolicy=fcrop&w=1400&h=600&q=mediumHigh) ## The Annual Vacation Sale Members save up to 40% on hotels and homes. Plan this year’s big trip and save. [Book now](https://expedia.com/deals?rfrr=FTG_SPRING_PROMO_) ## Travel information | Origin airport | Cardiff Intl. | | ------------------- | ------------- | | Destination airport | Midway Intl. | | Airlines serving | Delta | | Roundtrip price | $1,144 | | Distance | 3835 mi | ## Book with confidence # Cardiff to Chicago Flights The cheapest times to fly from Cardiff to Chicago On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Cardiff to Chicago are during the month of June. You can find some of the cheapest flights from Cardiff to Chicago with Expedia's search tool and vast selection of airlines. The best time to book a flight from Cardiff to Chicago Sunday is one of the best days to book for cheap flights from Cardiff to Chicago: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance. How to find cheap round-trip tickets from Cardiff to Chicago Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Cardiff to Chicago in 2026\. You can also book with separate airlines for your outbound and return journeys, from $1,715 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference\*. This is available for a small fee, and is free to One Key Gold and Platinum tier members. Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Cardiff to Chicago flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps. You could also save big by booking one of Expedia's [vacation packages](https://www.expedia.com/package-deals). Bundling together your Cardiff to Chicago airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures. \*Terms apply. Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023\. The percentages you see are averages. \*Flight schedules are subject to change. \*Available to One Key members.