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$448+ Cheap flights from Duesseldorf Intl (DUS) to Ontario (ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
DUS — ONT
Feb 17 — Feb 241
Tue 2/17
Tue 2/24
1 adult, Economy
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Cheap flight deals from Duesseldorf Intl to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Duesseldorf Intl (DUS) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 18, 2026.

Round-trip from

$557
(Flysmarter)

One-way from

$448
(American Airlines)

Popular in

July

Cheapest in

September

Average price

$713
From Duesseldorf Intl to Ontario
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One-way flight from Duesseldorf Intl to Ontario
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Highest demand for flights based on searches. 12% potential increase in price ($100 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from Duesseldorf Intl to Ontario

Cheapest flights from Duesseldorf Intl to Ontario
Explore the most affordable flight options available from Duesseldorf Intl to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 18, 2026.

This Flysmarter deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/107:10 am
DUS
-
ONT
2 stops25h 36m
Multiple Airlines
Sun 4/197:30 am
ONT
-
DUS
2 stops20h 55m
Multiple Airlines
Deal found 1/18$557
This United Airlines deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/110:40 am
DUS
-
ONT
2 stops21h 05m
United Airlines
Tue 4/711:05 am
ONT
-
DUS
2 stops16h 35m
United Airlines
Deal found 1/18$562
This United Airlines deal was found by Cheapflights users on 1/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/246:10 am
DUS
-
ONT
2 stops24h 40m
United Airlines
Sun 5/36:00 am
ONT
-
DUS
2 stops21h 40m
United Airlines
Deal found 1/17$563
This United Airlines deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/23:10 pm
DUS
-
ONT
2 stops27h 46m
United Airlines
Mon 4/61:34 pm
ONT
-
DUS
2 stops19h 21m
United Airlines
Deal found 1/18$565
This United Airlines deal was found by Cheapflights users on 1/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/266:20 am
DUS
-
ONT
2 stops23h 16m
United Airlines
Sun 5/36:00 am
ONT
-
DUS
2 stops21h 40m
United Airlines
Deal found 1/17$573
This American Airlines deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/314:15 pm
DUS
-
ONT
2 stops33h 07m
American Airlines
Tue 4/79:24 am
ONT
-
DUS
2 stops23h 36m
American Airlines
Deal found 1/18$586
This British Airways deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/316:55 pm
DUS
-
ONT
2 stops32h 47m
British Airways
Fri 4/102:08 pm
ONT
-
DUS
2 stops58h 27m
British Airways
Deal found 1/18$619
This British Airways deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/306:25 pm
DUS
-
ONT
2 stops37h 24m
British Airways
Tue 4/710:59 am
ONT
-
DUS
2 stops22h 01m
British Airways
Deal found 1/18$642
This British Airways deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/306:25 pm
DUS
-
ONT
2 stops37h 24m
British Airways
Sat 4/112:08 pm
ONT
-
DUS
2 stops34h 27m
British Airways
Deal found 1/18$672
This American Airlines deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/27:10 am
DUS
-
ONT
2 stops18h 12m
American Airlines
Sat 4/1111:59 pm
ONT
-
DUS
2 stops36h 01m
American Airlines
Deal found 1/18$693
This United Airlines deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/811:05 am
DUS
-
ONT
2 stops18h 12m
United Airlines
Tue 8/111:33 pm
ONT
-
DUS
2 stops16h 02m
United Airlines
Deal found 1/18$739

Cheapflights Fare Finder

 
Customize your flight search to find flights from Duesseldorf Intl to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 18, 2026.
Use the filters below to find and compare flights from Duesseldorf Intl Airport to Ontario that are best for you.

Fly from

Duesseldorf Intl

Fly to

Ontario

Route

Depart

Return

Price

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Wed 5/6

6:10 am-8:36 pm

2 stops23h 26m

Ontario

Mon 5/11

6:00 am-12:40 pm

2 stops21h 40m

$562

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Thu 4/2

3:10 pm-9:56 am

2 stops27h 46m

Ontario

Tue 4/7

11:05 am-12:40 pm

2 stops16h 35m

$562

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Wed 4/1

10:40 am-10:45 pm

2 stops21h 05m

Ontario

Wed 4/8

11:05 am-12:40 pm

2 stops16h 35m

$562

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Thu 4/2

10:30 am-9:56 am

2 stops32h 26m

Ontario

Wed 4/8

6:49 pm-12:40 pm

3 stops32h 51m

$562

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Sat 4/25

6:00 am-10:26 pm

2 stops25h 26m

Ontario

Sun 5/3

6:00 am-12:40 pm

2 stops21h 40m

$563

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Sat 4/25

6:00 am-10:26 pm

2 stops25h 26m

Ontario

Sat 5/2

6:59 pm-12:40 pm

2 stops32h 41m

$563

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Fri 4/24

9:20 am-10:26 pm

2 stops22h 06m

Ontario

Sat 5/2

6:59 pm-12:40 pm

2 stops32h 41m

$563

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Fri 4/24

6:10 am-9:50 pm

2 stops24h 40m

Ontario

Sun 5/3

6:00 am-12:40 pm

2 stops21h 40m

$563

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Thu 4/2

3:10 pm-9:56 am

2 stops27h 46m

Ontario

Mon 4/6

1:34 pm-5:55 pm

2 stops19h 21m

$565

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Thu 4/2

10:30 am-9:56 am

2 stops32h 26m

Ontario

Thu 4/9

5:10 am-5:50 pm

2 stops27h 40m

$565

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/18

Showing 1-10 of 24 results
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Best time to book a flight from Duesseldorf Intl to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Duesseldorf Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Duesseldorf Intl Airport to Ontario

What is the cheapest month to book a flight from Duesseldorf Intl Airport to Ontario?

Currently, September is the cheapest month in which you can book a flight from Duesseldorf Intl Airport to Ontario (average of $501). Flying from Duesseldorf Intl Airport to Ontario in July is currently the most expensive (average of $669). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Duesseldorf Intl to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ontario from Duesseldorf Intl?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly into when you book flights from Duesseldorf Intl to Ontario. 0 airlines have flights to Ontario from Duesseldorf Intl on a regular basis. Booking flights from Duesseldorf Intl to Ontario should not be difficult; the airport handles an average of 0 inbound flights from Duesseldorf Intl per day.

  • How long is the flight from Duesseldorf Intl Airport to Ontario?

    There are many flights that can get you from Duesseldorf Intl Airport to Ontario in 21h 05m. Fly via United Airlines to get the fastest option. There are 5641 mi between Duesseldorf Intl Airport and Ontario.

  • Can I find deals for flights from Duesseldorf Intl to Ontario that include hotel bookings?

    Yes. In addition to deals on Duesseldorf Intl to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Duesseldorf Intl to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Duesseldorf Intl to Ontario.

  • Can I find deals for business class flights from Duesseldorf Intl to Ontario?

    Yes. Cheapflights offers flight deals from Duesseldorf Intl to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Duesseldorf Intl Airport to Ontario?

    Currently, September is the cheapest month in which you can book a flight from Duesseldorf Intl Airport to Ontario (average of $501). Flying from Duesseldorf Intl Airport to Ontario in July is currently the most expensive (average of $669). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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