IAD to ONT (Washington to Ontario) Flights

Last Minute Flights from IAD to ONT

Price found within the past 7 days for the specified period. Click for updated prices.

OriginDestinationTravel DatesFlights From*
IADLos AngelesJuly 5 to July 7$415
*Prices include taxes and fees

Cheapest IAD to ONT Flights

Price found within the past 7 days for the specified period. Click for updated prices.

OriginDestinationTravel DatesFlights From*
IADLos AngelesJuly 24 to July 31$145
IADLos AngelesAugust 7 to August 12$218
IADLos AngelesSeptember 9 to September 12$299
IADLos AngelesJuly 30 to August 2$299
IADLos AngelesAugust 12 to August 18$317
*Prices include taxes and fees
IAD to ONT Flight Details
Origin airport
Washington Dulles Intl.
Origin airport IATA code
IAD
Destination airport
Los Angeles - Ontario Intl.
Destination airport IATA code
ONT
Distance
2236 mi

Frequently asked questions

What airlines fly direct from Washington Dulles Intl. Airport (IAD) to Los Angeles - Ontario Intl. Airport (ONT)?
Unfortunately, you can't fly straight from Dulles Intl. Airport to Los Angeles - Ontario Intl. Airport (ONT). Head to Ontario by reserving a flight with one or more stops in between. If you've got the time, why not stay a day or two in your layover city?
How many flights are there from IAD to ONT?
There are no less than 30 flights every day from Washington, DC (IAD-Washington Dulles Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.), so you have no shortage of ways to get to Ontario. Just select a date that matches your plans and lock in your airfare.
How long does it take to fly from Washington, DC (IAD-Washington Dulles Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
While you won't be squished in your seat for too long from Washington, DC (IAD-Washington Dulles Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.), 7 hours and 26 minutes is no short flight either. Contemplate upgrading your ticket if you like the idea of having extra legroom.
What is the flight distance from Washington, DC (IAD-Washington Dulles Intl.) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
A distance of 2,200 miles (3,600 1) separates Chantilly and Ontario, making it a medium-haul flight. No whirlwind trip yet no sky-high marathon, pack whatever you need to help make your flight a comfortable one.
How many morning flights are there from IAD to ONT?
Get ready to set that alarm and take to the skies aboard one of the 95 morning flights from IAD to ONT available each week.

  • You can take off at 6:00AM if you go with Delta Air Lines (DL). It has 34 weekly flights from IAD to ONT.
  • Another popular option is United Airlines. This airline has 28 early flights a week. 6:00AM is the earliest.
  • Secure a seat with American Airlines (AA) and you'll have about 18 morning flights to choose from. The earliest departure time from IAD is 5:02AM.

How many afternoon flights are there from IAD to ONT?
Take to the skies on one of the 121 afternoon and evening flights from IAD to ONT per week.

  • United Airlines (UA) offers 53 weekly flights that take off after midday. The earliest departs at 12:30PM.
  • If you'd prefer to lock in a seat with Delta Air Lines (DL), look up the 29 weekly afternoon and evening flights that depart IAD from 12:29PM onward.
  • Otherwise you can fly from 12:00PM onward with American Airlines (AA). This carrier has 23 afternoon and evening flights a week.

What is the earliest departure time out of Chantilly to Ontario?
Leave IAD at 4:05AM and hit the tarmac at ONT at 11:00PM. This departure is the earliest you can book on this route.
What is the latest departure time out of Chantilly to Ontario?
Lock in a seat on the 10:00PM flight out of IAD, landing at ONT at 1:40PM, and allow yourself time to take care of any last-minute vacation preparations. This is the latest flight you can get on this route.
What is the average price from Chantilly to Ontario?
On average, the cheapest price for round-trip flights from IAD to ONT is $145. Scoop up your own sensational deal by locking in your tickets soon. This price was available on Flights.com within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Washington to Ontario Flights

Whether it’s for an obligation or the sake of your sanity, sometimes you need to get away. Maybe you need flights from Washington to Ontario to attend your cousin’s wedding, to pitch a business idea to your boss, or simply treat yourself to a mini vacation. Regardless of the reasons behind packing your bags and needing to find our cheapest flights from IAD to ONT, we’ve got you covered here at Flights.com.

We present you with some of the most affordable deals on airfare, so stop that Google flights search. We want you to spend less on your flight from Washington to Ontario, so you can spend more during your getaway. With Flights.com, you’ll find it simple to land airline tickets with itineraries matching your travel schedule. What’s more, we provide you with all the information you need to confidently make reservations on your family, business, or personal trip.