$179 Cheap United flights Ontario (ONT) to Rapid City (RAP)

Make use of the “Price (lowest to highest)” filter on Expedia to search for cheap United Airlines return flights from $259 from ONT to RAP. Affordable one-way options from $179 are also on offer.**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.

January is one of the cheapest months to travel to Rapid City with United Airlines. You could also find excellent prices on one-way and round-trip fares in November.

Begin your search one to three months ahead of your departure date to get cheap fares on United Airlines flights from Los Angeles - Ontario Intl. Airport (ONT) to Rapid City Regional Airport (RAP). 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.* Nail your timing, and you can enjoy significant savings on domestic flights.*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 browsing for direct United Airlines flights from ONT to RAP. It’s also a great way to compare other airlines servicing the same direct trip.

Filter your results by “Early Morning” and “Morning” to see the earliest departures from ONT to RAP. Setting off early means you’re 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.

United Airlines flights from Los Angeles - Ontario Intl. Airport (ONT) to Rapid City arrive at Rapid City Regional Airport (RAP). This is the main entry point here.

Travel from ONT to RAP with United Airlines and look forward to a range of benefits starting with a rewarding loyalty program. When booking through Expedia as a United Mileage Plus and One Key™ member, you can 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.

Typically, you can cancel or reschedule your flight, although additional fees may apply if you made your booking more than 24 hours ago. Need flexible options? Apply the “Changes included” or “No cancel fee” filter to find flights that won’t penalize you if you have to adjust your plans. To update your itinerary, visit “Trips,” select your flight and click on “Manage Booking” for more details.