Cheap Flights From Denver Intl. (DEN) To Sky Harbor Intl. (PHX)

If you're planning to travel from Denver to Phoenix, there are more than enough airlines to take you there. Pick out a flight from these top carriers that offer direct flights from Denver Airport to Phoenix Sky Harbor Airport:

• Southwest Airlines - (WN) with 265 flights every month
• United Airlines - (UA) with 186 flights every month
• American Airlines - (AA) with 152 flights every month
• Frontier Airlines - (F9) with 91 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.