$34 Cheap Frontier Airlines flights Fort Myers (RSW) to Chicago (ORD)

Use the "Price (lowest to highest)" filter on Expedia to search for cheap Frontier Airlines round-trip flights from $82 from RSW to ORD. Affordable one-way options from $34 are available as well.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Look for affordable Frontier Airlines flights from Southwest Florida Intl. Airport (RSW) to O'Hare Intl. Airport (ORD) one to three months ahead of your departure day. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare class and itinerary, the ideal day to book a domestic flight is generally Sunday and the most expensive day is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.

Taking off from RSW at 12:32PM UTC-5, the earliest Frontier Airlines flight to ORD arrives at 2:52PM UTC-6. Flying early means you'll be less likely to experience delays.* Prefer a later start? The last Frontier Airlines flight from RSW to ORD departs at 10:28PM UTC-5 and touches down at 12:48AM UTC-6.*Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.

Offering a rewarding loyalty program, Frontier Airlines is a top choice for many travelers journeying from RSW to ORD. Plus, if you're a Frontier Miles and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.