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Bonn

$405+ Cheap flights from Ontario (ONT) to Bonn, Germany

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 12/8. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FRA
Nov 17 — Nov 241
Mon 11/17
Mon 11/24
1 adult, Economy
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Cheap flight deals from Ontario to Bonn

Keep the following information in mind while searching for Ontario to Bonn flight deals. Data was last updated October 18, 2025.

Round-trip from

$593
(Billigflug)

One-way from

$405
(United Airlines)

Popular in

June

Cheapest in

February

Average price

$772
From Ontario to Bonn
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One-way flight from Ontario to Bonn
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Highest demand for flights based on searches. 18% potential increase in price ($202 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Ontario to Bonn

Cheapest flights from Ontario to Bonn
Explore the most affordable flight options available from Ontario to Bonn. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 18, 2025.

This Billigflug deal was found by Cheapflights users on 10/16. 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 Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/316:00 amONT - DUS
2 stops23h 35mMultiple Airlines
Tue 11/46:20 amDUS - ONT
2 stops23h 24mMultiple Airlines
Deal found 10/16$593
This United Airlines deal was found by Cheapflights users on 10/16. 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 10/316:00 amONT - DUS
2 stops23h 35mUnited Airlines
Tue 11/46:20 amDUS - ONT
3 stops49h 31mUnited Airlines
Deal found 10/16$594
This Kissandfly.com deal was found by Cheapflights users on 10/16. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/66:00 amONT - DUS
2 stops24h 15mLufthansa
Wed 11/1910:30 amDUS - ONT
2 stops35h 03mLufthansa
Deal found 10/16$627
This United Airlines deal was found by Cheapflights users on 10/16. 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 11/231:40 pmONT - DUS
2 stops19h 20mUnited Airlines
Wed 11/2610:30 amDUS - ONT
2 stops20h 19mUnited Airlines
Deal found 10/16$722
This United Airlines deal was found by Cheapflights users on 10/16. 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 11/61:29 pmONT - DUS
2 stops19h 36mUnited Airlines
Mon 11/102:30 pmDUS - ONT
2 stops17h 21mUnited Airlines
Deal found 10/16$727
This Delta deal was found by Cheapflights users on 10/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/27:05 amONT - DUS
2 stops15h 35mDelta
Thu 12/256:15 amDUS - ONT
2 stops22h 35mDelta
Deal found 10/17$746
This United Airlines deal was found by Cheapflights users on 10/17. 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.
Wed 12/31:34 pmONT - DUS
2 stops15h 01mUnited Airlines
Thu 12/259:25 amDUS - ONT
2 stops22h 00mUnited Airlines
Deal found 10/17$784
This United Airlines deal was found by Cheapflights users on 10/17. 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 11/166:38 pmONT - DUS
2 stops37h 02mUnited Airlines
Sun 11/236:20 amDUS - ONT
2 stops25h 31mUnited Airlines
Deal found 10/17$795
This United Airlines deal was found by Cheapflights users on 10/17. 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.
Sat 11/151:29 pmONT - DUS
2 stops15h 21mUnited Airlines
Thu 11/202:30 pmDUS - ONT
2 stops17h 21mUnited Airlines
Deal found 10/17$903
This United Airlines deal was found by Cheapflights users on 10/17. 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.
Sat 11/151:29 pmONT - DUS
2 stops15h 21mUnited Airlines
Sun 11/232:40 pmDUS - ONT
2 stops17h 11mUnited Airlines
Deal found 10/17$913
This United Airlines deal was found by Cheapflights users on 10/17. 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.
Tue 12/21:50 pmONT - DUS
2 stops19h 15mUnited Airlines
Sun 12/2810:40 amDUS - ONT
2 stops20h 12mUnited Airlines
Deal found 10/17$1,128
This CheapOair deal was found by Cheapflights users on 10/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/156:00 amONT - DUS
2 stops31h 25mMultiple Airlines
Thu 11/207:10 amDUS - ONT
2 stops25h 22mMultiple Airlines
Deal found 10/17$1,393

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Bonn 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 October 18, 2025.
Use the filters below to find and compare flights from Ontario to Bonn that are best for you.

Fly from

Ontario

Fly to

Bonn

Route

Depart

Return

Price

OntarioDüsseldorf

ONT - DUS

ONTDUS

Ontario

Fri 10/31

6:00 am-1:35 pm

2 stops23h 35m

Duesseldorf Intl

Tue 11/4

6:20 am-8:44 pm

2 stops23h 24m

$593

OntarioDüsseldorf

ONT - DUS

ONTDUS

Ontario

Fri 10/31

6:00 am-1:35 pm

2 stops23h 35m

Duesseldorf Intl

Tue 11/4

6:20 am-10:51 pm

3 stops49h 31m

$594

OntarioDüsseldorf

ONT - DUS

ONTDUS

Ontario

Thu 11/6

6:00 am-3:15 pm

2 stops24h 15m

Duesseldorf Intl

Wed 11/19

10:30 am-12:33 pm

2 stops35h 03m

$627

OntarioDüsseldorf

ONT - DUS

ONTDUS

Ontario

Sun 11/23

1:40 pm-6:00 pm

2 stops19h 20m

Duesseldorf Intl

Wed 11/26

10:30 am-9:49 pm

2 stops20h 19m

$722

OntarioDüsseldorf

ONT - DUS

ONTDUS

Ontario

Thu 11/6

1:29 pm-6:05 pm

2 stops19h 36m

Duesseldorf Intl

Mon 11/10

2:30 pm-10:51 pm

2 stops17h 21m

$727

OntarioDüsseldorf

ONT - DUS

ONTDUS

Ontario

Tue 12/2

7:05 am-7:40 am

2 stops15h 35m

Duesseldorf Intl

Thu 12/25

6:15 am-7:50 pm

2 stops22h 35m

$746

OntarioDüsseldorf

ONT - DUS

ONTDUS

Ontario

Thu 12/4

12:12 pm-1:55 pm

2 stops16h 43m

Duesseldorf Intl

Thu 12/25

6:15 am-7:50 pm

2 stops22h 35m

$746

OntarioDüsseldorf

ONT - DUS

ONTDUS

Ontario

Fri 3/27

1:45 pm-5:00 pm

2 stops43h 15m

Duesseldorf Intl

Tue 3/31

9:10 am-8:35 pm

2 stops20h 25m

$759

OntarioDüsseldorf

ONT - DUS

ONTDUS

Ontario

Wed 12/3

1:34 pm-1:35 pm

2 stops15h 01m

Duesseldorf Intl

Thu 12/25

9:25 am-10:25 pm

2 stops22h 00m

$784

OntarioDüsseldorf

ONT - DUS

ONTDUS

Ontario

Sun 11/16

6:38 pm-4:40 pm

2 stops37h 02m

Duesseldorf Intl

Sun 11/23

6:20 am-10:51 pm

2 stops25h 31m

$795

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/17

Showing 1-10 of 14 results
1
2

Best time to book a flight from Ontario to Bonn

Have a flexible travel schedule? Discover the best time to fly to Bonn from Ontario 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 Ontario to Bonn

What is the cheapest month to book a flight from Ontario to Bonn?

Currently, February is the cheapest month in which you can book a flight from Ontario to Bonn (average of $439). Flying from Ontario to Bonn in June is currently the most expensive (average of $775). 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.

What is the cheapest time of day to fly from ONT to BN9?

Find hourly flight availability from Ontario to Bonn. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 18, 2025.

A simple way to save on the total cost of your ticket is to fly from Ontario to Bonn in the evening. If you’re flexible enough to do this you can expect to save up to 41% on your trip compared to booking a flight in the afternoon.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Bonn. 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 from for flights from Ontario to Bonn?

    If you book a flight to Bonn from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario. There are 0 flights from Ontario to Bonn per day from 2 different airlines.

  • How long is the flight from Ontario to Bonn?

    United Airlines and Lufthansa can get you from Ontario to Bonn in just under 23h 35m. Your travel time can differ by up to 40m. There are 5641 mi between Ontario and Bonn. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

  • How can I find direct flights from Ontario to Bonn?

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

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

    Yes. Cheapflights offers flight deals from Ontario to Bonn 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 Ontario to Bonn?

    Currently, February is the cheapest month in which you can book a flight from Ontario to Bonn (average of $439). Flying from Ontario to Bonn in June is currently the most expensive (average of $775). 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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Top 2 airlines flying from Ontario to Bonn

Discover the top 2 airlines that operate flights from Ontario to Bonn. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$712Average$917FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$719Average$830FlexibilityNo cancel feeOn-time70%

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