Pack waterproof layers, an umbrella, and shoes with traction for Seattle in October, and lighter layers for departure from Dallas/Fort Worth International Airport (DFW). Allow extra connection time when arriving at Seattle-Tacoma International Airport (SEA) during forecasted rainstorms and consider travel insurance or flexible fares for critical itineraries. Bring a portable charger, download airline apps for real-time updates, and pre-book airport transfers to Bellevue, Tacoma, Everett, or downtown Seattle to avoid waits. CTA: Prepare your packing list and book flexible DFW to SEA October travel options today.