Cheap Flights From O'Hare Intl. (ORD) To Sky Harbor Intl. (PHX)

With a range of airlines selling direct flights from ORD to Sky Harbor Intl. Airport (PHX), you'll easily find one that ticks all your boxes. Here are some of the most sought-after air carriers:

• American Airlines - (AA) with 265 flights every month
• United Airlines - (UA) with 134 flights every month
• Southwest Airlines - (WN) with 65 flights every month
• Frontier Airlines - (F9) with 30 flights every month

Here's the deal: It is typically possible to start comparing international airfares on Travelocity.ca up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2-4 weeks prior to their travel dates.*According to flight demand on Travelocity.ca from January to December 2021. Savings are subject to change and may vary depending on selections made.