The flight time from Seattle to Phoenix typically ranges between about 2 hours 25 minutes and 2 hours 56 minutes for nonstop flights. The average in-air flight time is approximately 2 hours 25 minutes, while gate-to-gate time (including taxiing) is around 2 hours 45 minutes. Some sources report the flight duration closer to 2 hours 55 minutes or just under 3 hours depending on the flight and conditions

. In summary:

• Average in-air flight time: ~2 hours 25 minutes
• Gate-to-gate time: ~2 hours 45 minutes
• Typical nonstop flight duration: about 2 hours 55 minutes

This variation depends on specific flight routes, airline schedules, and airport procedures.