$64 Cheap United flights Houston (IAH) to Miami (MIA)

You'll discover affordable round-trip United Airlines flights from $105 from IAH to MIA by organizing your results from "Price (lowest to highest)" on Expedia. Or look for deals from $64 for a one-way journey.**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.

For cheap United Airlines fares from George Bush Intercontinental Airport (IAH) to Miami Intl. Airport (MIA), start searching one to three months before your intended departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect what you pay. Sunday tends to be the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your journey on a Sunday.**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.

The earliest flight from IAH to MIA with United Airlines leaves at 7:20AM UTC-6. You'll touch down at 10:57AM UTC-5. The final United Airlines flight of the day takes off at 6:56PM UTC-6 and arrives at 10:33PM UTC-5. With 20% fewer cancellations for departures before midday, heading out early is generally the smartest option.**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.

Fly from IAH to MIA with United Airlines and you'll enjoy a range of perks starting with a rewarding loyalty program. When booking through Expedia as a United Mileage Plus 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.