$154 Cheap Frontier Airlines flights Grand Rapids (GRR) to Seattle (SEA)

Use the “Price (lowest to highest)” filter on Expedia to find cheap Frontier Airlines return flights from $210 from GRR to SEA. Affordable one-way tickets from $154 are also on offer.**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.

Search for one-way or round-trip flights to Seattle in January or February. You could find lower fares with Frontier Airlines during these off-peak times.

Search for cheap Frontier Airlines flights from Gerald R. Ford Intl. Airport (GRR) to Seattle - Tacoma Intl. Airport (SEA) one to three months ahead of your departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare class and journey, the best day to book a domestic flight is generally Sunday and the most expensive tends to be Monday. Passengers who book on a Sunday can save 6% on average compared to those who book on a Monday.**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 see if there’s a direct journey from GRR to SEA with Frontier Airlines or another airline, select the “Nonstop” filter when browsing for flights.

Search Frontier Airlines’s earliest flights from GRR to SEA by selecting our “Morning” and “Early Morning” filters. Not only will you arrive at your destination sooner, early departures also experience 20% fewer cancellations.**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.

Frontier Airlines flights from Gerald R. Ford Intl. Airport (GRR) to Seattle arrive at Seattle - Tacoma Intl. Airport (SEA). This is the main entry point to this destination.

Offering a rewarding loyalty program, Frontier Airlines is a popular choice for many passengers flying from GRR to SEA. Plus, if you’re a Frontier Miles and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights along with your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Typically, you can change or cancel your flight, although there may be a charge if you booked more than 24 hours ago. Need flexible options? Use our “Changes included” or “No cancel fee” filter to find flights that won’t penalize you if you have to adjust your plans. To make changes, head to “Trips,” select your flight and click on “Manage Booking” for further information.