United award flight prices vary substantially based on the cabin class and when you're flying. Example: Economy Saver Award prices for the short hop from San Francisco to Los Angeles run as low as 5,100 miles, while a first-class Everyday Award for the same hop costs around 30,000 miles.

Whether United flights are "cheaper" with miles depends on the redemption value (cents per mile) for a specific route. United uses dynamic award pricing, meaning the mileage cost fluctuates based on demand, similar to cash prices. Often, you can find "Saver Awards" which offer exceptional value, especially for expensive last-minute flights or international business class (Polaris), where the mileage cost might represent thousands of dollars in savings. However, for cheap domestic "Basic Economy" style routes, the value might be lower. As of 2026, United has also introduced special award discounts for MileagePlus credit cardholders, who often save 10% or more on every award booking. Generally, miles are most "profitable" for high-cost international travel, but they are a great way to save cash on any trip if you have a large balance.