$274 Cheap Alaska Airlines flights Moline (MLI) to Seattle (SEA)

Finding cheap one-way Alaska Airlines flights from MLI to SEA from $274 on Expedia is a breeze — just filter by "Price (lowest to highest)." Alternatively, check out our affordable return fares from $379 for your next getaway.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

For cheap Alaska Airlines fares from Quad City Intl. Airport (MLI) to Seattle - Tacoma Intl. Airport (SEA), start searching one to three months before your planned departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect what you pay. Sunday is generally the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.

Filter your results by "Morning" and "Early Morning" to browse the earliest flights from MLI to SEA. Leaving early means flight cancellations are less likely.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.

Offering an excellent in-flight experience and a rewarding loyalty program, Alaska Airlines is a popular option for many travelers flying from MLI to SEA. Plus, if you're a Mileage Plan and One Key™ member booking with Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be spent on future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.