$43 Cheap Frontier Airlines flights Las Vegas (LAS) to Chicago (ORD)

Finding cheap one-way Frontier Airlines flights from LAS to ORD from $43 on Expedia is simple — just filter by “Price (lowest to highest).” Alternatively, check out our budget-friendly return fares from $86 for your next adventure.**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.

January is one of the cheapest months to jet away to Chicago with Frontier Airlines. You could also find excellent prices on one-way and round-trip tickets in February.

Search for affordable Frontier Airlines flights from Harry Reid Intl. Airport (LAS) to O’Hare Intl. Airport (ORD) one to three months before your 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. Regardless of fare type and itinerary, the best 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.

Yes, you can fly from Harry Reid Intl. Airport (LAS) to O’Hare Intl. Airport (ORD) on any of Frontier Airlines’s 4 weekly direct flights. Use our “Nonstop” and “Airline” filters to find the Frontier Airlines flight that’ll land at ORD at your preferred time.

The travel time for a nonstop Frontier Airlines flight from Harry Reid Intl. Airport (LAS) to O’Hare Intl. Airport (ORD) takes approximately 3h 48m.

The earliest Frontier Airlines flight from LAS to ORD departs at 11:37AM UTC-8, arriving at 5:25PM UTC-6. If you prefer to jet off later, the last Frontier Airlines flight leaves LAS at 1:39PM UTC-8 and lands at ORD at 7:28PM UTC-6. Flying early is generally a wise choice as morning flights are least likely to face cancellations.**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.

O’Hare Intl. Airport (ORD) is the main gateway for Frontier Airlines flights from Harry Reid Intl. Airport (LAS) to Chicago. But the airline also flies to Midway Intl. Airport (MDW). Be sure to check the “All Airports” option for your destination to see what’s available for your journey to Chicago.

Fly from LAS to ORD with Frontier Airlines and you’ll enjoy a range of benefits starting with a rewarding loyalty program. When booking through Expedia as a Frontier Miles and One Key™ member, you can also earn OneKeyCash™* to spend on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

You’ll likely board an Airbus A320neo or an Airbus A321neo when flying Frontier Airlines from Harry Reid Intl. Airport (LAS) to O’Hare Intl. Airport (ORD). However, keep in mind that a different aircraft could be assigned to your route depending on operational demands.

In most cases, you can change or cancel your flight, although additional fees may apply if you made your booking more than 24 hours ago. Need to keep your options open? Use Expedia’s “Changes included” and “No cancel fee” filters to find flights that won’t charge you extra if you need to alter your plans. To modify your booking, visit “Trips,” select your flight and click on “Manage Booking” for more information.