$84 Cheap Frontier Airlines flights Phoenix (PHX) to Chicago (ORD)

Landing cheap one-way Frontier Airlines flights from PHX to ORD from $84 on Expedia is a breeze — just filter by “Price (lowest to highest).” Alternatively, check out our affordable return fares from $168 for your next exciting vacation.**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.

Browse for return or one-way flights to Chicago in January or February. You could find a cheap fare with Frontier Airlines during these off-peak months.

Look for affordable Frontier Airlines flights from Sky Harbor Intl. Airport (PHX) to O’Hare Intl. Airport (ORD) one to three months ahead of your day of departure. 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 journey, the ideal day to book a domestic flight is generally Sunday and the most expensive 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.

Depart on one of Frontier Airlines’s 5 weekly direct flights from Sky Harbor Intl. Airport (PHX) to O’Hare Intl. Airport (ORD). To see your choices, enter your origin, dates and destination and hit search. Then select the “Nonstop” and “Airline” filters.

From wheels-up to touchdown, a direct Frontier Airlines flight from Sky Harbor Intl. Airport (PHX) to O’Hare Intl. Airport (ORD) takes approximately 3h 33m.

The earliest flight from PHX to ORD with Frontier Airlines leaves at 10:38AM UTC-7. You’ll touch down at 3:13PM UTC-6. The final Frontier Airlines flight of the day leaves at 7:15PM UTC-7 and arrives at 11:44PM UTC-6. With around 20% fewer cancellations for departures before midday, starting your travel day early is generally the best way to go.**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.

Most Frontier Airlines flights from Sky Harbor Intl. Airport (PHX) to Chicago touch down at O’Hare Intl. Airport (ORD). This is the airline’s main point of entry to this city. It’s worth checking Expedia for flights to nearby airports like Midway Intl. Airport (MDW), as prices may be lower.

A rewarding loyalty program and the ability to rack up points through Frontier Miles are the start of the reasons to travel from PHX to ORD with Frontier Airlines. Plus, by joining Expedia’s free One Key™ program, you can receive OneKeyCash™* in addition to any airline loyalty program earnings. You can put it toward your future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

For the Sky Harbor Intl. Airport (PHX) to O’Hare Intl. Airport (ORD) route, Frontier Airlines typically uses Airbus A321 and Airbus A320neo planes. Don’t forget that last-minute changes can occur for operational needs, so your flight could be on another aircraft.

Changes are typically free within 24 hours of making a booking, but your airline may add a charge after that time. For more details about altering your reservation, head to your “Trips,” select your flight and click on “Manage Booking.” If you’d like the freedom to adjust your plans without extra charges, apply the “Changes included” and “No cancel fee” filters when organizing your next trip.