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Good to Know: Cheapest and Fastest ONT - IAD Flights
Useful information for finding best airline tickets from Ontario International to Washington Dulles International on your next trip.
Cheapest One way Flight
$257
Frontier Airlines
• 1 stop
• 10h 45m
Oct 16
The cheapest one way flight from Ontario to Washington (ONT-IAD) is currently $257
Fastest Flight
10h 45m
The fastest nonstop flight from Ontario to Washington (ONT-IAD) takes 10h 45m
Top Airlines Flying from Ontario to Washington
Latest Flight Deals from Ontario (ONT) to Washington (IAD)
Explore competitive one-way airfare options for ONT - IAD flights. Best suited for flexible or open-ended travel plans.
Flying to Washington soon? We've surfaced some of the most affordable last-minute flights from Ontario to Washington, ideal for urgent plans or spontaneous trips.
FAQs on Ontario to Washington Flights
What are the airports in Ontario?
ONT
What’s the most popular airline flying from ONT to IAD?
The most popular airline flying from Ontario to Washington are
Can I fly from ONT to IAD non-stop?
NO
Which airlines fly nonstop between Ontario and Washington?
The non-stop flights between Ontario and Washington are .
What’s the earliest departure time from ONT to IAD Airport?
The earliest flight leaves ONT at 5:00 am and lands in IAD - Washington Dulles International
What are the airports in Washington?
IAD,BWI,DCA
Can I make changes to my Ontario to Washington flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from ONT to IAD?
Read the fare rules of the Ontario to Washington air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Ontario and Washington?
operate flights between Ontario and Washington
How long does a flight from Ontario to Washington take?
It takes approximately 5 hour to fly non-stop from ONT to IAD, which is 2241.85 miles by air.
Which airlines provide the cheapest flights from Ontario (ONT) to Washington (IAD) ?
In the past couple of days, the cheapest tickets to IAD from ONT were found on UA : USD 446
Do I need a passport to fly between ONT and IAD?
No
What’s the latest departure time from ONT to IAD ?
The last flight leaves ONT at 8:35 pm
Ontario (ONT) to Washington (IAD): Airport Information
| Origin Airport | Ontario International , Ontario, US |
| Destination Airport | Washington Dulles International , Washington, US |
| Distance | 2242 miles |
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