Roundtrip Seattle to Phoenix Nonstop Airfares on Frontier Airlines

Score roundtrip nonstop airfares from Seattle to Phoenix with Frontier Airlines for $58. This ultra low-cost fare includes a personal item and basic travel from point A to point B.

Important Exclusions

• This pricing does not include seat selection, carry-on bags, or changes.
• Slightly lower pricing may be available for Discount Den members.

Travel Availability

• Departing Seattle (SEA): January 9-10, 12, 17-18; February 20, 22, 27; March 1, 6-10, 16, 23-25, 30-31
• Departing Phoenix (PHX): January 10, 15-18, February 13; March 6-7, 10-12, 17-18, 25-26, 30-31

This deal expires on March 31, 2026.