Fly SFO to SEA: The Best Flight Deals to the Emerald City

For the smoothest transition from Northern California to Washington, try to book your flight at least three weeks in advance to secure the most competitive fares on this popular commuter route. If you are traveling for a quick trip, consider using a carry-on only, as the short duration makes checking luggage feel cumbersome, and it will allow you to bypass the baggage claim crowds at SEA. To maximize your scenic views during the flight, try to snag a window seat on the right side of the aircraft when flying north to catch a glimpse of the stunning Cascade Mountains and Mount Rainier as you descend into the Puget Sound area. Lastly, remember to pack layers and a light rain jacket regardless of the season, as Seattle’s weather can be unpredictable even when San Francisco is experiencing a rare heatwave, and having waterproof gear is essential for comfortable urban exploration.

Flight prices between SFO and SEA tend to peak during the summer months of July and August when the weather in the Pacific Northwest is most favorable for hiking and outdoor festivals. Conversely, you can often find the cheapest rates during the late autumn and winter months, particularly in January and February, excluding the holiday season. Mid-week departures on Tuesdays or Wednesdays typically offer more significant savings compared to the high-demand Friday and Sunday afternoon travel slots favored by weekend vacationers.