Starting at $165
Starting at $218
Starting at $422
Starting at $819
Starting at $121
Starting at $165
Helping travelers to find the best flight offers
Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from Washington to Ontario. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.
The cost of a one-way flight from Washington to Ontario ranges from $125 (January 2026) to $127 (November 2025). On average, the ticket price is about $126–$127.
A direct flight is the most convenient and comfortable way to fly from Washington to Ontario, despite the fact that sometimes flights with transfers can cost significantly less.
A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Washington to Ontario:
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We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.
More than 6 airlines operate flights from Washington to Ontario, including Southwest Airlines, United Airlines, Alaska Airlines, American Airlines, JetBlue Airways, and Frontier Airlines. This is a popular route, so passengers can choose tickets based on budget and preferences. Ticket prices start from $121, and our service lets you instantly compare all options. The variety of offers simplifies planning: you can choose budget fares or more comfortable options with baggage included or extra services. We help you find the best deals so your trip is cost-efficient.
Starting at $165
Starting at $218
Starting at $422
Starting at $819
Starting at $121
Starting at $165
Washington — Los Angeles
05/14/2026
Departure
Direct flight
WN120
Starting at $224
Washington — Los Angeles
10/07/2026
Departure
Direct flight
UA1385
Starting at $218
Washington — Los Angeles
11/28/2025
Departure
Direct flight
AS5
Starting at $422
Washington — Los Angeles
12/29/2025
Departure
Direct flight
AA1848
Starting at $819
Baltimore — Los Angeles
12/29/2025
Departure
Direct flight
WN1194
Starting at $576
Unable to find information about the schedule of direct flights from
The cheapest flight ticket from Washington to Ontario according to data for the last 48 hours costs $121
Often the best time to buy tickets from Washington to Ontario is 2 months before departure.
Based on statistics over the past years, the lowest prices for flights from Washington to Ontario can be found flying in these months: January, November.
The fastest flights from Washington to Ontario start from 7 hours 55 minutes in the air.
The following airlines operate direct flights on the route Washington — Ontario: Southwest Airlines, United Airlines, Alaska Airlines
The cheapest one-way flight from Washington to Ontario departs on 10/06/2026, is operated by JetBlue Airways and costs $121
The cheapest roundtrip flight from Washington to Ontario departs on 12/28/2025, is operated by Frontier Airlines and costs $386
Fastest flight from Washington to Ontario takes 7h 55m
There are no direct flights on this route.
The distance between Washington and Ontario is 3639km (2256 miles). The time difference between Washington and Ontario is 3h
We couldn't find any special offers for flights from Washington to Ontario