NT$6,277 Cheap Flights from Ontario (ONT) to Washington (IAD)

Bundle Your Flight + Hotel & Save!

    Plan, book, fly with confidence
  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 45% on select hotels after you book a flight*
  • payments icon
    Earn twice
    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Ontario to Washington (ONT-IAD)

Prices were available within the past 7 days and start at NT$6,277 for one-way flights and NT$11,074 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Jul 16 - Tue, Jul 30
ONT
Ontario
IAD
Washington
NT$11,074 Roundtrip, found 6 days ago
NT$11,074
Roundtrip
found 6 days ago
Select United flight, departing Tue, Jul 16 from Ontario to Washington, returning Tue, Jul 30, priced at NT$11,074 found 6 days ago
Delta
Tue, Jul 16 - Tue, Jul 30
ONT
Ontario
IAD
Washington
NT$11,524 Roundtrip, found 6 days ago
NT$11,524
Roundtrip
found 6 days ago
Select Delta flight, departing Tue, Jul 16 from Ontario to Washington, returning Tue, Jul 30, priced at NT$11,524 found 6 days ago
United
Tue, Jul 16 - Tue, Jul 30
ONT
Ontario
IAD
Washington
NT$12,168 Roundtrip, found 6 days ago
NT$12,168
Roundtrip
found 6 days ago
Select United flight, departing Tue, Jul 16 from Ontario to Washington, returning Tue, Jul 30, priced at NT$12,168 found 6 days ago
United
Tue, Jul 16 - Tue, Jul 30
ONT
Ontario
IAD
Washington
NT$12,554 Roundtrip, found 6 days ago
NT$12,554
Roundtrip
found 6 days ago
Select United flight, departing Tue, Jul 16 from Ontario to Washington, returning Tue, Jul 30, priced at NT$12,554 found 6 days ago
Delta
Tue, Jul 16 - Tue, Jul 30
ONT
Ontario
IAD
Washington
NT$13,004 Roundtrip, found 6 days ago
NT$13,004
Roundtrip
found 6 days ago
Select Delta flight, departing Tue, Jul 16 from Ontario to Washington, returning Tue, Jul 30, priced at NT$13,004 found 6 days ago
United
Tue, Jul 16 - Tue, Jul 30
ONT
Ontario
IAD
Washington
NT$13,455 Roundtrip, found 6 days ago
NT$13,455
Roundtrip
found 6 days ago
Select United flight, departing Tue, Jul 16 from Ontario to Washington, returning Tue, Jul 30, priced at NT$13,455 found 6 days ago
United
Tue, Jul 16 - Tue, Jul 30
ONT
Ontario
IAD
Washington
NT$13,648 Roundtrip, found 6 days ago
NT$13,648
Roundtrip
found 6 days ago
Select United flight, departing Tue, Jul 16 from Ontario to Washington, returning Tue, Jul 30, priced at NT$13,648 found 6 days ago
Delta
Tue, Jul 16 - Tue, Jul 30
ONT
Ontario
IAD
Washington
NT$13,852 Roundtrip, found 6 days ago
NT$13,852
Roundtrip
found 6 days ago
Select Delta flight, departing Tue, Jul 16 from Ontario to Washington, returning Tue, Jul 30, priced at NT$13,852 found 6 days ago
United
Tue, Jul 16 - Tue, Jul 30
ONT
Ontario
IAD
Washington
NT$14,035 Roundtrip, found 6 days ago
NT$14,035
Roundtrip
found 6 days ago
Select United flight, departing Tue, Jul 16 from Ontario to Washington, returning Tue, Jul 30, priced at NT$14,035 found 6 days ago
United
Tue, Jul 16 - Tue, Jul 30
ONT
Ontario
IAD
Washington
NT$14,131 Roundtrip, found 6 days ago
NT$14,131
Roundtrip
found 6 days ago
Select United flight, departing Tue, Jul 16 from Ontario to Washington, returning Tue, Jul 30, priced at NT$14,131 found 6 days ago
Flights from Ontario (ONT) to Washington (IAD)
Origin airport
Los Angeles - Ontario Intl.
Destination airport
Washington Dulles Intl.
Roundtrip price
NT$11,074
Distance
3578 km

Los Angeles to Chantilly Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from Los Angeles to Chantilly will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring Chantilly.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with ONT to IAD flights that won’t make your bank account wince. Ready to temporarily leave behind Los Angeles for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to IAD with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

Frequently asked questions

How much is a flight from Ontario Airport to Dulles Intl. Airport?
Start packing your bags, because round-trip flights between Ontario Airport and Washington Dulles Intl. Airport (IAD) start from NT$11,074. That’s based on fares advertised within the last 7 days on Expedia for flights departing within the next year. Prices can rise quickly, so book today to secure the best deal. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Los Angeles - Ontario Intl. Airport (ONT) to IAD?
Each air carrier has its own set of terms and conditions. If you do decide to cancel, follow the instructions on our Customer Service Portal.
How do I find cheap flights from Los Angeles - Ontario Intl. Airport (ONT) to IAD that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for Los Angeles - Ontario Intl. Airport (ONT) to Washington Dulles Intl. Airport (IAD) flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from Los Angeles - Ontario Intl. Airport (ONT) to Washington Dulles Intl. Airport (IAD)?
Expect to be cruising at altitude for a while, as the flight distance from Ontario to Chantilly is 3,600 kilometers. Create a playlist of your favorite podcasts before you leave home to stay entertained during the journey.
Which airlines fly direct from Los Angeles - Ontario Intl. Airport (ONT) to Dulles Intl. Airport?
Direct flights aren’t available, so you’ll need to make at least one stop between ONT and Washington Dulles Intl. Airport (IAD). Use the layover time to stretch your legs and enjoy some personal space.
Are ONT to Dulles Intl. Airport flight tickets cheaper when they're purchased at the last minute?
Booking last minute from Los Angeles - Ontario Intl. Airport (ONT) to Dulles Intl. Airport can be hit-or-miss. You may be able to score a great bargain, but then again, you could miss out entirely! If you’d prefer to start planning your trip early on, Expedia compares flight deals up to 12 months in advance. Just remember that not all airlines publish their prices so far in advance. Our suggestion? Check back often as updates are made regularly.
Ontario nearby Airports

Los Angeles

Los Angeles Intl. to Washington
NT$10,203
*Available to Expedia members.