Find Allegiant Air(G4) flights from Grand Rapids to Seattle

At the moment, several airlines serve connecting flights from Grand Rapids to Seattle, including: United Airlines Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.

It takes about 7 hours 47 minutes to fly from Grand Rapids to Seattle.

By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Grand Rapids to Seattle is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

Based on Trip.com data in the past 4 weeks, there is 4 flight per week flying from Grand Rapids to Seattle. You can check the weekly schedule for popular airlines on this route below: United Airlines: S/M/T/W/T/F/S -- UA2099 (07:23)

The cheapest months to fly from Grand Rapids to Seattle is September, when demand for travel is lower.

After crunching the numbers on our October flight calendar, it's currently cheapest to fly from Grand Rapids to Seattle on October 22, 2026 with Frontier Airlines, with prices starting at US$131.

You can land at any one of the following hubs in Seattle: King County (Boeing Field) International Airport (BFI), Kenmore Air Harbor Seaplane Base (LKE), and Seattle-Tacoma International Airport (SEA). Flying from Gerald R. Ford International Airport to Seattle-Tacoma International Airport (GRR-SEA) is by far the most common option on this route.

The time difference between Seattle and Grand Rapids is 3h.

Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.