$105 Cheap Frontier Airlines flights Indianapolis (IND) to Seattle (SEA)

Landing cheap one-way Frontier Airlines flights from IND to SEA from $105 on Expedia is simple — just filter by “Price (lowest to highest).” Or check out our budget-friendly return fares from $210 for your next exciting vacation.**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.

Frontier Airlines flights to Seattle are generally more affordable in the low-season months of January and February. Whether you’re in search of a round-trip or one-way ticket, you could land a better deal then.

Look for affordable Frontier Airlines flights from Indianapolis Intl. Airport (IND) to Seattle - Tacoma Intl. Airport (SEA) one to three months prior to 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. No matter the fare class and journey, the best day of the week to book a domestic flight is usually Sunday and the most expensive 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.

Enter your dates, press search and select “Nonstop” on Expedia to browse any direct flights from IND to SEA with Frontier Airlines or other airlines.

Sort your results by “Morning” and “Early Morning” to browse the earliest departures from IND to SEA. Taking off early means you’re 20% less likely to experience 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.

Hop on a Frontier Airlines flight from Indianapolis Intl. Airport (IND) to Seattle, and you’ll most likely arrive at Seattle - Tacoma Intl. Airport (SEA). This is the airline’s primary hub in this city.

Travel from IND to SEA with Frontier Airlines and look forward to a range of benefits starting with a rewarding loyalty program. When you book through Expedia as a Frontier Miles and One Key™ member, you may also earn OneKeyCash™* to use on select future travel purchases.*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 your booking, but your airline may add a charge after that. For further details about altering your reservation, go to your “Trips,” select your flight and click on “Manage Booking.” If you want the flexibility to adjust your plans without additional charges, tick the “Changes included” and “No cancel fee” filters when planning your next adventure.