$104 Cheap Frontier Airlines flights Cleveland (CLE) to Seattle (SEA)

Set the “Price (lowest to highest)” filter on Expedia to find cheap Frontier Airlines round-trip flights from $208 from CLE to SEA. Affordable one-way tickets from $104 are available too.**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.

January is one of the most affordable months to travel to Seattle with Frontier Airlines. You could also find great deals on one-way and return fares in February.

Search for affordable Frontier Airlines flights from Hopkins Intl. Airport (CLE) to Seattle - Tacoma Intl. Airport (SEA) one to three months ahead of your day of 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 itinerary, the best day of the week to book a domestic flight is generally Sunday and the most expensive day is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel 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.

Click on our “Nonstop” filter when browsing for direct Frontier Airlines flights from CLE to SEA. It’s also a good way to compare other airlines servicing the same nonstop trip.

Browse Frontier Airlines’s earliest flights from CLE to SEA by using the “Morning” and “Early 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.

Frontier Airlines flights from Hopkins Intl. Airport (CLE) to Seattle come in to land at Seattle - Tacoma Intl. Airport (SEA). This is the main gateway to this destination.

With a rewarding loyalty program, Frontier Airlines is a top pick for many travelers flying from CLE to SEA. Plus, as a Frontier Miles and One Key™ member booking through Expedia, you can earn OneKeyCash™* on eligible flights on top of your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on the ticket type you purchased, a fee is typically charged if you modify or cancel your flight more than 24 hours after it’s confirmed. To find tickets with more flexibility, select our “Changes included” or “No cancel fee” filter when looking for flights. For more details on canceling or changing your reservation, go to “Trips,” select your flight and click on “Manage Booking.”