HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$619+ 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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
CGN — ONT
feb. 25 — mar. 41
mar. 2/25
mar. 3/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Cologne to Ontario with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
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 febrero 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$619
(American Airlines)

Popular in

July

Cheapest in

January

Average price

$632
Provider with most accurate pricing for Cologne Köln/Bonn-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Cologne Köln/Bonn-Los Angeles flights.
Search Deals
From Cologne Köln/Bonn to Ontario
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($94 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

Find flight deals from Cologne to Ontario

Cheapest flights from Cologne to Ontario
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 febrero 20, 2025.

This American Airlines deal was found by Cheapflights users on 2/20. 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.
jue. 3/611:35 amCGN - ONT
2 stops19h 56mAmerican Airlines
jue. 3/207:00 amONT - CGN
2 stops19h 20mAmerican Airlines
Deal found 2/20$619
This British Airways deal was found by Cheapflights users on 2/20. 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.
jue. 3/611:35 amCGN - ONT
2 stops19h 56mBritish Airways
jue. 3/204:30 pmONT - CGN
2 stops17h 05mBritish Airways
Deal found 2/20$935

Find flights from Cologne to Ontario within your budget

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 febrero 20, 2025.

Fly from

Cologne

Fly to

Ontario

Route

Depart

Return

Price

CologneOntario

CGN - ONT

CGNONT

Cologne Köln/Bonn

jue. 3/6

11:35 am-10:31 pm

2 stops19h 56m

Ontario

jue. 3/20

7:00 am-10:20 am

2 stops19h 20m

$619

CologneOntario

CGN - ONT

CGNONT

Cologne Köln/Bonn

jue. 3/6

11:35 am-10:31 pm

2 stops19h 56m

Ontario

jue. 3/20

4:30 pm-5:35 pm

2 stops17h 05m

$935

CologneOntario

CGN - ONT

CGNONT

Cologne Köln/Bonn

jue. 8/7

10:15 am-11:27 am

2 stops34h 12m

$794

CologneOntario

CGN - ONT

CGNONT

Cologne Köln/Bonn

jue. 3/6

9:10 am-9:54 am

2 stops33h 44m

$1,852

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

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.

Travel insights for flights from Cologne to Ontario

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

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 $315). 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 febrero 20, 2025.
United Airlines
7.4
Good
8,766 reviews

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.7

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YVR - SFO

It was a good experience. The flight took 45 minutes longer to fly and all passengers had to wait inside the plane till the technical issue was fixed. Overall it was a good experience.

United Airlines
7.4
Good
8,766 reviews
United Airlines
7.4
Good
8,766 reviews

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.7

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YVR - SFO

It was a good experience. The flight took 45 minutes longer to fly and all passengers had to wait inside the plane till the technical issue was fixed. Overall it was a good experience.

American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,766 reviews

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.7

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YVR - SFO

It was a good experience. The flight took 45 minutes longer to fly and all passengers had to wait inside the plane till the technical issue was fixed. Overall it was a good experience.

British Airways
6.6
Okay
6,763 reviews
United Airlines
7.4
Good
8,766 reviews

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.7

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YVR - SFO

It was a good experience. The flight took 45 minutes longer to fly and all passengers had to wait inside the plane till the technical issue was fixed. Overall it was a good experience.

Related info for your journey

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Cologne 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 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 $315). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Cologne to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Frankfurt to Los Angeles flights
Frankfurt to San Francisco flights
Frankfurt to Las Vegas flights
Munich to Los Angeles flights
Frankfurt to Ontario flights
Munich to San Francisco flights
Frankfurt to San Jose flights
Munich to San Diego flights
Duesseldorf Intl to Los Angeles flights
Berlin to Los Angeles flights
Munich to Las Vegas flights
Frankfurt-Hahn to Los Angeles flights
Duesseldorf Intl to Las Vegas flights
Munich to Ontario flights
Frankfurt to Oakland flights
Berlin to San Francisco flights
Frankfurt-Hahn to San Francisco flights
Frankfurt-Hahn to Las Vegas flights
Berlin to Las Vegas flights
Duesseldorf Intl to San Francisco flights
Hamburg to Los Angeles flights
Duesseldorf Intl to San Diego flights
Hamburg to Las Vegas flights
Frankfurt to San Diego flights
Stuttgart to Los Angeles flights
Frankfurt to Santa Ana flights
Hamburg to San Francisco flights
Bremen to Las Vegas flights
Munich to Burbank flights
Frankfurt to Long Beach flights
Cologne to Los Angeles flights
Stuttgart to Las Vegas flights
Bremen to Los Angeles flights
Stuttgart to San Francisco flights
Munich to San Jose flights
Berlin to Oakland flights
Bremen to San Francisco flights
Munich to Oakland flights
Berlin to San Diego flights
Munich to Santa Ana flights
Berlin to San Jose flights
Hannover to Los Angeles flights
Cologne to Las Vegas flights
Stuttgart to Ontario flights
Hannover to Las Vegas flights
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.