$109 Cheap United flights Dallas (DFW) to Ontario (ONT)

View $109 flight on Thu, Feb 19, 2026Opens in a new window
  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

$109 Cheap United flights Dallas (DFW) to Ontario (ONT)

Prices were available within the past 7 days and start at $109 for one-way flights and $212 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Fri, Feb 20 - Sat, Feb 21
DFW
Dallas
ONT
Ontario
$212 Roundtrip, found 19 hours ago
$212
Roundtrip
found 19 hours ago
Select United flight, departing Fri, Feb 20 from Dallas to Ontario, returning Sat, Feb 21, priced at $212 found 19 hours ago
Flights from Dallas (DFW) to Ontario (ONT)
Origin airport
Dallas-Fort Worth Intl.
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, United
Popular airline
Frontier Airlines
Distance
1184 mi
Average flight time
1 hour 21 mins

Black Friday Sale

Limited-time deals: Save up to 50% on select hotels.
Book now

Frequently asked questions

How much is a United Airlines flight from Dallas-Fort Worth Intl. Airport (DFW) to Los Angeles - Ontario Intl. Airport (ONT)?
Finding cheap one-way United Airlines flights from DFW to ONT from $109 on Expedia is simple — just filter by "Price (lowest to highest)." Alternatively, check out our budget-friendly round-trip fares from $212 for your next break.**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.
What is the cheapest month to fly from DFW to ONT with United Airlines?
Search for round-trip or one-way flights to Ontario in January or April. You could find cheaper fares with United Airlines during these off-season months.
What is the cheapest time to book flights from Dallas-Fort Worth Intl. Airport (DFW) to Los Angeles - Ontario Intl. Airport (ONT) with United Airlines?
Begin your search one to three months before your departure to get cheap fares on United Airlines flights from Dallas-Fort Worth Intl. Airport (DFW) to Los Angeles - Ontario Intl. Airport (ONT). 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 cut costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Get the timing right, 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.
Does United Airlines fly nonstop from Dallas-Fort Worth Intl. Airport (DFW) to Los Angeles - Ontario Intl. Airport (ONT)?
Use the "Nonstop" filter when looking for direct United Airlines flights from DFW to ONT. You'll also be able to compare other carriers offering the same direct route.
What is the earliest United Airlines flight from DFW to ONT?
Search United Airlines's earliest flights from DFW to ONT by using the "Morning" and "Early Morning" filters. Not only will you arrive at your destination 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.
What airports does United Airlines fly into in Ontario?
United Airlines flights from Dallas-Fort Worth Intl. Airport (DFW) to Ontario touch down at Los Angeles - Ontario Intl. Airport (ONT). This is the main gateway here.
Why fly with United Airlines from DFW to ONT?
Depart from DFW to ONT with United Airlines and you'll enjoy a range of perks including a rewarding loyalty program. When you book through Expedia as a United Mileage Plus and One Key™ member, you can 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.
Can I change or cancel my United Airlines flight from Dallas-Fort Worth Intl. Airport (DFW) to Los Angeles - Ontario Intl. Airport (ONT)?
Depending on the type of ticket you purchased, a fee is typically charged if you cancel or change your booking more than 24 hours after it's confirmed. To secure flexible fares, select our "Changes included" and "No cancel fee" boxes when looking for flights. For additional information on canceling or changing your reservation, visit "Trips," select your flight and tick "Manage Booking."

Explore a world of travel with Expedia

*Available to One Key members.