Cheap Flights from Seattle to Dallas
Compare cheap flights from Seattle (SEA) to Dallas (DFW) on Tripile, with fares from around $139. The route takes about 3h 45m, and September is often the best month for low prices.
Airlines on This Route
Popular airlines flying Seattle to Dallas include Alaska Airlines, American Airlines, Delta, Southwest. 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 DFW, 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 3h 45m sector.
When to Book SEA to DFW
Fares on this route start from around $139, and September typically brings the lowest prices. Search with flexible dates to compare a whole month at once, check the return leg from Dallas to Seattle in the same search, and review the fare rules before paying so you know what a change or cancellation would cost.