Cheap Spirit Airlines flights Denver (DEN) to Houston (IAH)

Finding cheap one-way Spirit Airlines flights from DEN to IAH on Expedia is simple — just filter by “Price (lowest to highest).” Alternatively, check out our affordable return fares for your next adventure.**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.

November is one of the least expensive months to jet off to Houston with Spirit Airlines. You could also find great prices on return and one-way fares in February.

Start searching one to three months ahead of your travel date to find cheaper fares on Spirit Airlines flights from Denver Intl. Airport (DEN) to George Bush Intercontinental Airport (IAH). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Time it well, and you can enjoy significant savings on domestic trips.*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 DEN to IAH with Spirit Airlines or other airlines.

Filter your results by “Early Morning” and “Morning” to see the earliest flights from DEN to IAH. Leaving 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.

Board a Spirit Airlines flight from Denver Intl. Airport (DEN) to Houston, and you’ll likely touch down at George Bush Intercontinental Airport (IAH). This is the airline’s main hub in this destination.

A rewarding loyalty program and the ability to collect points through Free Spirit are the start of the reasons to jet off from DEN to IAH with Spirit Airlines. Plus, when you join Expedia’s free One Key™ program, you can earn OneKeyCash™* on top of Spirit Airlines’s loyalty program earnings. It’s yours to spend on future bookings.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

In most cases, you can change or cancel your flight, although additional charges may apply if your booking was made more than 24 hours ago. Need flexible options? Make use of our “Changes included” or “No cancel fee” filter to find flights that won’t penalize you if you need to adjust your plans. To update your itinerary, head to “Trips,” select your flight and click on “Manage Booking” for more details.