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$503+ Cheap flights from Frankfurt (FRA) to Ontario (ONT)

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 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
FRA — ONT
Mar 14 — Mar 211
Sat 3/14
Sat 3/21
1 adult, Economy
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Cheap flight deals from Frankfurt to Ontario

Cheapest flights from Frankfurt to Ontario
Explore the most affordable flight options available from Frankfurt to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 12, 2026.

This American Airlines deal was found by Cheapflights users on 2/9. 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 4/199:20 am
FRA
-
ONT
1 stop20h 47m
American Airlines
Sun 4/262:08 pm
ONT
-
FRA
2 stops23h 17m
American Airlines
Deal found 2/9$654
This lastminute.com deal was found by Cheapflights users on 2/11. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2110:45 am
FRA
-
ONT
2 stops20h 06m
Multiple Airlines
Wed 10/2810:57 am
ONT
-
FRA
2 stops21h 43m
Multiple Airlines
Deal found 2/11$655
This lastminute.com deal was found by Cheapflights users on 2/11. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2210:45 am
FRA
-
ONT
2 stops20h 06m
Multiple Airlines
Fri 10/3010:57 am
ONT
-
FRA
2 stops20h 43m
Multiple Airlines
Deal found 2/11$656
This American Airlines deal was found by Cheapflights users on 2/9. 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.
Fri 10/3010:15 am
FRA
-
ONT
1 stop19h 36m
American Airlines
Sun 11/12:59 pm
ONT
-
FRA
2 stops16h 51m
American Airlines
Deal found 2/9$657
This lastminute.com deal was found by Cheapflights users on 2/11. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/219:20 am
FRA
-
ONT
1 stop19h 44m
British Airways
Wed 10/288:47 am
ONT
-
FRA
1 stop14h 28m
British Airways
Deal found 2/11$659
This United Airlines deal was found by Cheapflights users on 2/8. 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 10/308:15 am
FRA
-
ONT
2 stops22h 11m
United Airlines
Sun 11/15:00 am
ONT
-
FRA
1 stop19h 20m
United Airlines
Deal found 2/8$661
This lastminute.com deal was found by Cheapflights users on 2/9. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2810:55 am
FRA
-
ONT
1 stop16h 42m
British Airways
Sun 5/247:00 am
ONT
-
FRA
1 stop16h 45m
British Airways
Deal found 2/9$662
This lastminute.com deal was found by Cheapflights users on 2/10. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/910:45 am
FRA
-
ONT
2 stops20h 05m
Multiple Airlines
Fri 10/212:47 pm
ONT
-
FRA
2 stops20h 28m
Multiple Airlines
Deal found 2/10$663
This United Airlines deal was found by Cheapflights users on 2/9. 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 4/171:30 pm
FRA
-
ONT
1 stop16h 06m
United Airlines
Fri 4/2411:05 am
ONT
-
FRA
1 stop13h 40m
United Airlines
Deal found 2/9$665
This United Airlines deal was found by Cheapflights users on 2/10. 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 4/161:55 pm
FRA
-
ONT
1 stop16h 55m
United Airlines
Mon 4/207:00 am
ONT
-
FRA
1 stop14h 30m
United Airlines
Deal found 2/10$668

Find flight deals from Frankfurt to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Frankfurt (FRA) 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 February 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$654
(American Airlines)

One-way from

$503
(Expedia)

Popular in

July

Cheapest in

June

Average price

$616
Provider with most accurate pricing for Frankfurt am Main-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Frankfurt am Main-Ontario flights.
Search Deals
From Frankfurt am Main to Ontario
Search Deals
One-way flight from Frankfurt am Main to Ontario
Search Deals
Highest demand for flights based on searches. 0% potential increase in price ($5 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Frankfurt 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 February 12, 2026.
Use the filters below to find and compare flights from Frankfurt am Main Airport to Ontario that are best for you.

Fly from

Frankfurt

Fly to

Ontario

Route

Depart

Return

Price

Frankfurt am MainOntario

FRA - ONT

FRAONT

Frankfurt am Main

Fri 4/17

1:30 pm-8:36 pm

1 stop16h 06m

Ontario

Fri 4/24

11:05 am-9:45 am

1 stop13h 40m

$665

Frankfurt am MainOntario

FRA - ONT

FRAONT

Frankfurt am Main

Mon 4/6

1:55 pm-9:50 pm

1 stop16h 55m

Ontario

Sun 4/12

11:05 am-9:45 am

1 stop13h 40m

$665

Frankfurt am MainOntario

FRA - ONT

FRAONT

Frankfurt am Main

Wed 4/29

1:55 pm-9:50 pm

1 stop16h 55m

Ontario

Sun 5/17

7:00 am-6:30 am

1 stop14h 30m

$665

Frankfurt am MainOntario

FRA - ONT

FRAONT

Frankfurt am Main

Fri 4/3

12:40 pm-10:26 pm

1 stop18h 46m

Ontario

Sat 4/11

1:27 pm-3:15 pm

1 stop16h 48m

$665

Frankfurt am MainOntario

FRA - ONT

FRAONT

Frankfurt am Main

Mon 5/4

1:55 pm-9:58 pm

1 stop17h 03m

Ontario

Thu 5/14

7:00 am-6:30 am

1 stop14h 30m

$665

Frankfurt am MainOntario

FRA - ONT

FRAONT

Frankfurt am Main

Fri 4/24

1:55 pm-9:50 pm

1 stop16h 55m

Ontario

Sun 5/3

7:00 am-6:30 am

1 stop14h 30m

$665

Frankfurt am MainOntario

FRA - ONT

FRAONT

Frankfurt am Main

Sun 5/10

1:30 pm-8:36 pm

1 stop16h 06m

Ontario

Sun 5/17

7:00 am-6:30 am

1 stop14h 30m

$665

Frankfurt am MainOntario

FRA - ONT

FRAONT

Frankfurt am Main

Tue 5/5

1:30 pm-8:36 pm

1 stop16h 06m

Ontario

Fri 5/15

10:37 am-9:45 am

1 stop14h 08m

$665

Frankfurt am MainOntario

FRA - ONT

FRAONT

Frankfurt am Main

Fri 7/10

12:40 pm-10:28 pm

1 stop18h 48m

Ontario

Mon 7/27

7:00 am-6:30 am

1 stop14h 30m

$668

Frankfurt am MainOntario

FRA - ONT

FRAONT

Frankfurt am Main

Thu 4/16

1:55 pm-9:50 pm

1 stop16h 55m

Ontario

Mon 4/20

7:00 am-6:30 am

1 stop14h 30m

$668

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/8

Showing 1-10 of 21 results
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2
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  • Most accurate provider: When it comes to deals on Frankfurt am Main Airport-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Frankfurt am Main Airport-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Frankfurt am Main Airport-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Frankfurt am Main Airport-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Frankfurt am Main Airport-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Frankfurt to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Frankfurt 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 Frankfurt am Main Airport to Ontario

What is the cheapest month to book a flight from Frankfurt am Main Airport to Ontario?

Currently, February is the cheapest month in which you can book a flight from Frankfurt am Main Airport to Ontario (average of $444). Flying from Frankfurt am Main Airport to Ontario in July is currently the most expensive (average of $668). 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.

Related info for your journey

Find useful and relevant information for your journey from Frankfurt 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 Frankfurt am Main?

    For a flight from Frankfurt am Main to Ontario, you will be flying into Ontario. Ontario (ONT) is just 3.1 mi from the center of the city. Ontario is the only Ontario airport and it handles 0 inbound flights from Frankfurt am Main per day. 0 airlines have flights to Ontario from Frankfurt am Main on a regular basis.

  • How long is the flight from Frankfurt am Main Airport to Ontario?

    United Airlines can get you from Frankfurt am Main Airport to Ontario in just under 16h 06m. Your travel time can differ by up to . Frankfurt am Main Airport and Ontario are separated by a distance of 5757 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Frankfurt 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 Frankfurt am Main Airport to Ontario?

    Currently, February is the cheapest month in which you can book a flight from Frankfurt am Main Airport to Ontario (average of $444). Flying from Frankfurt am Main Airport to Ontario in July is currently the most expensive (average of $668). 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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