$179 Cheap Alaska Airlines flights New York (LGA) to Seattle (SEA)

You can discover affordable round-trip Alaska Airlines flights from $357 from LGA to SEA by sorting your results from “Price (lowest to highest)” on Expedia. Or look for options from $179 for a one-way trip.**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.

Alaska Airlines flights to Seattle are generally more affordable in the quieter months of January and February. Whether you’re in search of a return or one-way ticket, you could score a better deal then.

For cheap Alaska Airlines fares from LaGuardia Airport (LGA) 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 influence what you pay. Sunday is usually the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your journey 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.

To figure out if there’s a direct route from LGA to SEA with Alaska Airlines or other carriers, use our “Nonstop” filter when searching for tickets.

Browse Alaska Airlines’s earliest flights from LGA to SEA by checking the “Early Morning” and “Morning” filters. Not only will you get to where you’re going sooner, early departures are also 20% less likely to be canceled.**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.

Get on an Alaska Airlines flight from LaGuardia Airport (LGA) to Seattle, and you’re most likely to arrive at Seattle - Tacoma Intl. Airport (SEA). This is the airline’s main hub in this city.

Alaska Airlines makes flying from LGA to SEA more comfortable with a rewarding loyalty program and an excellent in-flight experience. You also have the chance to earn points with Mileage Plan. Don’t forget to join our free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future travel.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Changes are typically free within 24 hours of making a booking, but your airline may add a charge after that time. For further information about altering your reservation, head to your “Trips,” select your flight and click on “Manage Booking.” If you want the freedom to adjust your plans without additional charges, check the “Changes included” and “No cancel fee” filters when planning your next escape.