$114 Cheap Frontier Airlines flights Houston (IAH) to Seattle (SEA)

Use the “Price (lowest to highest)” filter on Expedia to find cheap Frontier Airlines round-trip flights from $199 from IAH to SEA. Affordable one-way fares from $114 are also available.**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.

Browse for return or one-way flights to Seattle in January or February. You could find cheaper fares with Frontier Airlines during these off-peak times.

Look for cheap Frontier Airlines flights from George Bush Intercontinental Airport (IAH) to Seattle - Tacoma Intl. Airport (SEA) one to three months before 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. No matter the fare class and itinerary, the best day to book a domestic flight is usually Sunday and the most expensive day tends to be 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.

Use our “Nonstop” filter when looking for direct Frontier Airlines flights from IAH to SEA. It’s also a great way to compare other airlines offering the same nonstop route.

Search Frontier Airlines’s earliest flights from IAH to SEA by selecting the “Early Morning” and “Morning” filters. Not only will you arrive 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.

Seattle - Tacoma Intl. Airport (SEA) is the main Seattle gateway for Frontier Airlines flights from George Bush Intercontinental Airport (IAH).

Journey from IAH to SEA with Frontier Airlines and enjoy a range of benefits starting with a rewarding loyalty program. When you book through Expedia as a Frontier Miles and One Key™ member, you could also earn OneKeyCash™* to spend on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

It’s usually possible to cancel or change your flight, although there may be a charge if your booking was made over 24 hours ago. Prefer to keep your options open? Use Expedia’s “No cancel fee” or “Changes included” filter to find flights that won’t penalize you if you have to adjust your plans. To modify your booking, go to “Trips,” select your flight and click on “Manage Booking” for more details.