$621+ Cheap flights from Cologne (CGN) 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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
CGN — ONT
Aug 23 — Aug 301
1 adult, Economy
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Cologne to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from Cologne (CGN) 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 August 18, 2025.
Round-trip from | $621 (British Airways) |
|---|---|
Popular in | December |
Cheapest in | March |
Average price | $737 |
Find flight deals from Cologne to Ontario
Cheapest flights from Cologne to OntarioExplore the most affordable flight options available from Cologne to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.
Explore the most affordable flight options available from Cologne to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.
This British Airways deal was found by Cheapflights users on 8/16. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/610:50 amCGN - ONT
2 stops20h 28mBritish Airways
Sun 11/27:00 amONT - CGN
2 stops24h 30mBritish Airways
Deal found 8/16![British Airways logo]()
$621
This British Airways deal was found by Cheapflights users on 8/16. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/314:35 pmCGN - ONT
2 stops34h 17mBritish Airways
Tue 11/410:47 amONT - CGN
2 stops44h 23mBritish Airways
Deal found 8/16![British Airways logo]()
$622
This United Airlines deal was found by Cheapflights users on 8/17. 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 11/146:45 amCGN - ONT
2 stops43h 49mUnited Airlines
Tue 11/187:00 amONT - CGN
2 stops25h 10mUnited Airlines
Deal found 8/17![United Airlines logo]()
$725
This British Airways deal was found by Cheapflights users on 8/16. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/105:15 pmCGN - ONT
2 stops34h 06mBritish Airways
Sun 11/302:59 pmONT - CGN
2 stops16h 31mBritish Airways
Deal found 8/16![British Airways logo]()
$773
This oojo deal was found by Cheapflights users on 8/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/110:15 pmCGN - ONT
2 stops33h 01mBritish Airways
Fri 10/174:49 pmONT - CGN
2 stops31h 26mBritish Airways
Deal found 8/16![British Airways logo]()
$792
This oojo deal was found by Cheapflights users on 8/17. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/310:15 pmCGN - ONT
2 stops33h 18mBritish Airways
Sun 9/74:45 pmONT - CGN
2 stops36h 35mBritish Airways
Deal found 8/17![British Airways logo]()
$793
This British Airways deal was found by Cheapflights users on 8/16. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/110:50 amCGN - ONT
2 stops19h 49mBritish Airways
Sun 9/144:45 pmONT - CGN
2 stops18h 40mBritish Airways
Deal found 8/16![British Airways logo]()
$956
This United Airlines deal was found by Cheapflights users on 8/17. 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 10/116:05 amCGN - ONT
2 stops21h 01mUnited Airlines
Sat 10/259:36 amONT - CGN
2 stops18h 54mUnited Airlines
Deal found 8/17![United Airlines logo]()
$1,232
This British Airways deal was found by Cheapflights users on 8/16. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2712:40 pmCGN - ONT
2 stops18h 02mBritish Airways
Tue 1/63:00 pmONT - CGN
2 stops16h 30mBritish Airways
Deal found 8/16![British Airways logo]()
$1,300
This American Airlines deal was found by Cheapflights users on 8/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/610:50 amCGN - ONT
2 stops22h 09mAmerican Airlines
Thu 10/3012:48 pmONT - CGN
2 stops18h 52mAmerican Airlines
Deal found 8/16![American Airlines logo]()
$1,426
Cheapflights Fare Finder
Customize your flight search to find flights from Cologne 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 August 18, 2025.
Use the filters below to find and compare flights from Cologne to Ontario that are best for you.
Fly from
Cologne
Fly to
Ontario
Route
Depart
Return
Price
CologneOntario
CGN - ONT
CGNONT
Cologne Köln/Bonn
Fri 10/10
10:00 pm-4:28 pm
2 stops27h 28m
Ontario
Tue 10/28
10:57 am-4:30 pm
2 stops21h 33m
$621
CologneOntario
CGN - ONT
CGNONT
Cologne Köln/Bonn
Mon 10/6
10:50 am-10:18 pm
2 stops20h 28m
Ontario
Mon 11/3
10:47 am-4:10 pm
2 stops20h 23m
$621
CologneOntario
CGN - ONT
CGNONT
Cologne Köln/Bonn
Tue 10/7
9:15 pm-4:28 pm
2 stops28h 13m
Ontario
Mon 11/3
7:00 am-4:10 pm
2 stops24h 10m
$621
CologneOntario
CGN - ONT
CGNONT
Cologne Köln/Bonn
Tue 10/7
9:15 pm-4:28 pm
2 stops28h 13m
Ontario
Thu 10/30
10:57 am-3:40 pm
2 stops20h 43m
$621
CologneOntario
CGN - ONT
CGNONT
Cologne Köln/Bonn
Mon 10/6
10:50 am-10:18 pm
2 stops20h 28m
Ontario
Thu 10/30
10:57 am-3:40 pm
2 stops20h 43m
$621
CologneOntario
CGN - ONT
CGNONT
Cologne Köln/Bonn
Fri 10/10
10:00 pm-4:28 pm
2 stops27h 28m
Ontario
Wed 10/29
2:51 pm-4:10 pm
2 stops17h 19m
$621
CologneOntario
CGN - ONT
CGNONT
Cologne Köln/Bonn
Tue 10/7
9:15 pm-4:28 pm
2 stops28h 13m
Ontario
Sun 11/2
7:00 am-4:30 pm
2 stops24h 30m
$621
CologneOntario
CGN - ONT
CGNONT
Cologne Köln/Bonn
Fri 10/10
10:00 pm-4:28 pm
2 stops27h 28m
Ontario
Mon 11/3
7:00 am-4:10 pm
2 stops24h 10m
$621
CologneOntario
CGN - ONT
CGNONT
Cologne Köln/Bonn
Tue 10/7
9:15 pm-4:28 pm
2 stops28h 13m
Ontario
Wed 10/29
2:51 pm-4:10 pm
2 stops17h 19m
$621
CologneOntario
CGN - ONT
CGNONT
Cologne Köln/Bonn
Fri 10/10
10:00 pm-4:28 pm
2 stops27h 28m
Ontario
Thu 10/30
8:15 am-3:40 pm
2 stops23h 25m
$621
Showing 1-10 of 16 results
Best time to book a flight from Cologne to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Cologne 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 Cologne to Ontario
What is the cheapest month to book a flight from Cologne to Ontario?
Currently, August is the cheapest month in which you can book a flight from Cologne to Ontario (average of $246). Flying from Cologne 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.