Cheap Flights from Seattle to Phoenix
Compare cheap flights from Seattle (SEA) to Phoenix (PHX) on Tripile, with fares from around $89. The route takes about 2h 55m, and December is often the best month for low prices.
Airlines on This Route
Popular airlines flying Seattle to Phoenix include Alaska Airlines, Southwest, American Airlines, Delta. Compare their schedules, baggage rules, and prices side by side, then book the option that fits your trip.
With 4 carriers commonly serving SEA to PHX, departure times are spread across the day, so it is worth checking early-morning and late-evening flights when you want the lowest fare on a 2h 55m sector.
When to Book SEA to PHX
Fares on this route start from around $89, and December typically brings the lowest prices. Search with flexible dates to compare a whole month at once, check the return leg from Phoenix to Seattle in the same search, and review the fare rules before paying so you know what a change or cancellation would cost.