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$620+ Cheap flights from Duesseldorf Intl (DUS) to Ontario (ONT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
DUS — ONT
juil. 5 — juil. 121
sam. 7/5
sam. 7/12
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 juin 30, 2025.

Round-trip from

$620
(American Airlines)

Popular in

July

Cheapest in

March

Average price

$711
From Duesseldorf Intl to Ontario
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Highest demand for flights based on searches. 12% potential increase in price ($102 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 June 2025
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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 juin 30, 2025.

This American Airlines deal was found by Cheapflights users on 6/29. 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.
mar. 9/164:20 pmDUS - ONT
2 stops34h 56mAmerican Airlines
dim. 10/122:46 pmONT - DUS
2 stops21h 19mAmerican Airlines
Deal found 6/29$620
This British Airways deal was found by Cheapflights users on 6/29. 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.
lun. 9/156:20 pmDUS - ONT
2 stops33h 34mBritish Airways
ven. 10/1011:59 pmONT - DUS
2 stops49h 36mBritish Airways
Deal found 6/29$622
This United Airlines deal was found by Cheapflights users on 6/28. 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.
jeu. 10/23:10 pmDUS - ONT
2 stops16h 32mUnited Airlines
jeu. 10/99:36 amONT - DUS
2 stops19h 29mUnited Airlines
Deal found 6/28$633
This Delta deal was found by Cheapflights users on 6/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 9/288:15 amDUS - ONT
2 stops23h 08mDelta
mer. 10/812:00 pmONT - DUS
2 stops18h 45mDelta
Deal found 6/29$639
This Iberia deal was found by Cheapflights users on 6/30. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/116:25 amDUS - ONT
2 stops26h 20mIberia
lun. 12/18:46 amONT - DUS
2 stops21h 24mIberia
Deal found 6/30$688
This British Airways deal was found by Cheapflights users on 6/30. 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.
lun. 8/186:20 amDUS - ONT
2 stops25h 28mMultiple Airlines
mar. 9/24:54 pmONT - DUS
2 stops19h 11mMultiple Airlines
Deal found 6/30$701

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 juin 30, 2025.
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

mar. 9/16

4:20 pm-6:16 pm

2 stops34h 56m

Ontario

dim. 10/12

2:46 pm-9:05 pm

2 stops21h 19m

$620

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

lun. 9/15

6:20 pm-6:54 pm

2 stops33h 34m

Ontario

sam. 10/11

11:59 pm-10:35 am

2 stops25h 36m

$622

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

jeu. 10/2

3:10 pm-10:42 pm

2 stops16h 32m

Ontario

jeu. 10/9

9:36 am-2:05 pm

2 stops19h 29m

$633

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

dim. 9/28

8:15 am-10:23 pm

2 stops23h 08m

Ontario

mer. 10/8

12:00 pm-3:45 pm

2 stops18h 45m

$639

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

mar. 11/11

6:25 am-11:45 pm

2 stops26h 20m

Ontario

lun. 12/1

8:46 am-3:10 pm

2 stops21h 24m

$688

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

lun. 8/18

6:20 am-10:48 pm

2 stops25h 28m

Ontario

mar. 9/2

4:54 pm-9:05 pm

2 stops19h 11m

$701

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

ven. 8/1

10:30 am-9:38 pm

2 stops20h 08m

$1,210

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

ven. 9/26

7:10 am-9:29 pm

2 stops23h 19m

$4,534

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/28

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, August is the cheapest month in which you can book a flight from Duesseldorf Intl Airport to Ontario (average of $246). Flying from Duesseldorf Intl Airport to Ontario in March is currently the most expensive (average of $328). 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.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated juin 30, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from Duesseldorf Intl Airport to Ontario by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,973 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,852 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Iberia
7.0
Good
2,810 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
British Airways
6.6
Okay
7,081 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

  • What are the cheapest airlines flying from Duesseldorf Intl Airport to Ontario round-trip?

    Flying on American Airlines is currently your cheapest option to Ontario, with prices starting at $620. Additional round-trip tickets that might be worth considering are offered by British Airways and United Airlines, with the lowest prices starting at $622 and $633, respectively.

  • 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, August is the cheapest month in which you can book a flight from Duesseldorf Intl Airport to Ontario (average of $246). Flying from Duesseldorf Intl Airport to Ontario in March is currently the most expensive (average of $328). 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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