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$615+ 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 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
DUS — ONT
Mar 13 — Mar 201
Thu 3/13
Thu 3/20
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 March 8, 2025.

Round-trip from

$635
(United Airlines)

Popular in

July

Cheapest in

March

Average price

$623
From Duesseldorf Intl to Ontario
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Highest demand for flights based on searches. 11% potential increase in price ($98 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 8, 2025.

This American Airlines deal was found by Cheapflights users on 3/7. 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.
Mon 9/294:45 pmDUS - ONT
2 stops33h 55mAmerican Airlines
Wed 10/2912:51 pmONT - DUS
2 stops22h 54mAmerican Airlines
Deal found 3/7$615
This United Airlines deal was found by Cheapflights users on 3/7. 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 4/257:30 amDUS - ONT
2 stops19h 21mUnited Airlines
Wed 5/143:10 pmONT - DUS
2 stops17h 50mUnited Airlines
Deal found 3/7$635
This British Airways deal was found by Cheapflights users on 3/7. 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 9/296:20 pmDUS - ONT
2 stops36h 36mBritish Airways
Thu 10/3012:51 pmONT - DUS
2 stops19h 24mBritish Airways
Deal found 3/7$650
This Delta deal was found by Cheapflights users on 3/7. 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.
Mon 4/288:15 amDUS - ONT
2 stops23h 28mDelta
Tue 5/202:35 pmONT - DUS
2 stops18h 05mDelta
Deal found 3/7$688
This American Airlines deal was found by Cheapflights users on 3/7. 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.
Sun 8/32:10 pmDUS - ONT
2 stops17h 53mMultiple Airlines
Sat 8/162:59 pmONT - DUS
2 stops19h 11mMultiple Airlines
Deal found 3/7$1,142
This Iberia deal was found by Cheapflights users on 3/7. 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.
Wed 4/911:55 amDUS - ONT
2 stops20h 55mIberia
Sat 5/32:44 pmONT - DUS
2 stops18h 21mIberia
Deal found 3/7$1,599

Find flights from Duesseldorf Intl to Ontario within your budget

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 March 8, 2025.

Fly from

Duesseldorf Intl

Fly to

Ontario

Route

Depart

Return

Price

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Fri 4/25

7:30 am-5:51 pm

2 stops19h 21m

Ontario

Wed 5/14

3:10 pm-6:00 pm

2 stops17h 50m

$635

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Tue 4/29

7:10 am-6:29 pm

2 stops20h 19m

Ontario

Sun 5/25

10:51 am-5:30 pm

2 stops21h 39m

$681

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Mon 4/28

8:15 am-10:43 pm

2 stops23h 28m

Ontario

Tue 5/20

2:35 pm-5:40 pm

2 stops18h 05m

$688

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Sun 8/3

2:10 pm-11:03 pm

2 stops17h 53m

Ontario

Sat 8/16

2:59 pm-7:10 pm

2 stops19h 11m

$1,142

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Wed 4/9

11:55 am-11:50 pm

2 stops20h 55m

Ontario

Sat 5/3

2:44 pm-6:05 pm

2 stops18h 21m

$1,599

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Mon 4/28

2:15 pm-11:50 pm

2 stops18h 35m

Ontario

Mon 5/19

4:35 pm-6:00 pm

2 stops16h 25m

$2,317

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Thu 3/13

12:15 pm-7:01 pm

2 stops38h 46m

$1,615

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/7

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.

Travel insights for flights from Duesseldorf Intl to Ontario

Get recent, data-driven insights about flights from Duesseldorf Intl to Ontario including ideal travel times, pricing trends, and more.

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 $313). 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.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

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 March 8, 2025.
Delta
8.0
Very good
8,024 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

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
8,024 reviews
Delta
8.0
Very good
8,024 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

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
8,649 reviews
Delta
8.0
Very good
8,024 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

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
8,024 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

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
2,640 reviews
Delta
8.0
Very good
8,024 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

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
6,733 reviews
Delta
8.0
Very good
8,024 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

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 United Airlines is currently your cheapest option to Ontario, with prices starting at $635. Additional round-trip tickets that might be worth considering are offered by American Airlines and Delta, with the lowest prices starting at $681 and $688, 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 $313). 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.

See more FAQs

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