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$576+ Cheap flights from Frankfurt (FRA) 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 8/22. Fares are subject to change and may not be available on all flights or dates of travel.
FRA — ONT
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheap 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 July 3, 2025.

Round-trip from

$576
(AirNGo)

Popular in

December

Cheapest in

February

Average price

$917
From Frankfurt am Main to Ontario
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($166 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($48 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find 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 July 3, 2025.

This AirNGo deal was found by Cheapflights users on 7/2. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2210:55 amFRA - ONT
1 stop20h 53mBritish Airways
Sun 9/72:30 pmONT - FRA
1 stop33h 15mBritish Airways
Deal found 7/2$576
This Billigflug deal was found by Cheapflights users on 7/1. 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.
Thu 8/1410:55 amFRA - ONT
1 stop20h 19mMultiple Airlines
Mon 8/182:57 pmONT - FRA
2 stops22h 28mMultiple Airlines
Deal found 7/1$579
This American Airlines deal was found by Cheapflights users on 7/1. 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.
Thu 8/1410:55 amFRA - ONT
1 stop22h 13mAmerican Airlines
Mon 8/1812:47 pmONT - FRA
2 stops24h 38mAmerican Airlines
Deal found 7/1$603
This Iberia deal was found by Cheapflights users on 7/2. 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.
Sat 8/1612:10 pmFRA - ONT
2 stops19h 38mIberia
Tue 8/198:14 amONT - FRA
1 stop15h 31mIberia
Deal found 7/2$626
This United Airlines deal was found by Cheapflights users on 7/2. 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 10/15:30 pmFRA - ONT
1 stop14h 12mUnited Airlines
Wed 10/159:36 amONT - FRA
2 stops17h 29mUnited Airlines
Deal found 7/2$635

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 July 3, 2025.
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 8/22

10:55 am-10:48 pm

1 stop20h 53m

Ontario

Sun 9/7

2:30 pm-8:45 am

1 stop33h 15m

$576

Frankfurt am MainOntario

FRA - ONT

FRAONT

Frankfurt am Main

Thu 8/14

10:55 am-10:14 pm

1 stop20h 19m

Ontario

Mon 8/18

2:57 pm-10:25 pm

2 stops22h 28m

$579

Frankfurt am MainOntario

FRA - ONT

FRAONT

Frankfurt am Main

Thu 8/14

10:55 am-12:08 am

1 stop22h 13m

Ontario

Mon 8/18

12:47 pm-10:25 pm

2 stops24h 38m

$603

Frankfurt am MainOntario

FRA - ONT

FRAONT

Frankfurt am Main

Sat 8/16

12:10 pm-10:48 pm

2 stops19h 38m

Ontario

Tue 8/19

8:14 am-8:45 am

1 stop15h 31m

$626

Frankfurt am MainOntario

FRA - ONT

FRAONT

Frankfurt am Main

Wed 10/1

5:30 pm-12:13 pm

1 stop27h 43m

Ontario

Tue 10/14

9:36 am-11:05 am

2 stops16h 29m

$635

Frankfurt am MainOntario

FRA - ONT

FRAONT

Frankfurt am Main

Mon 9/15

6:05 am-11:38 pm

2 stops26h 33m

$675

Frankfurt am MainOntario

FRA - ONT

FRAONT

Frankfurt am Main

Sat 8/16

9:45 am-9:37 pm

2 stops20h 52m

$722

Frankfurt am MainOntario

FRA - ONT

FRAONT

Frankfurt am Main

Thu 8/14

11:30 am-12:08 am

2 stops21h 38m

$893

Frankfurt am MainOntario

FRA - ONT

FRAONT

Frankfurt am Main

Mon 8/11

10:55 am-6:24 pm

1 stop16h 29m

$899

Frankfurt am MainOntario

FRA - ONT

FRAONT

Frankfurt am Main

Fri 8/15

10:55 am-10:48 pm

1 stop20h 53m

$903

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 12 results
1
2

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, August is the cheapest month in which you can book a flight from Frankfurt am Main Airport to Ontario (average of $246). Flying from Frankfurt am Main Airport 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.

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 July 3, 2025.
Get a feel of what it's like to fly with United Airlines, American Airlines, and WestJet from Frankfurt am Main Airport to Ontario by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,861 reviews

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.0

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
United Airlines
7.4
Good
8,861 reviews
United Airlines
7.4
Good
8,861 reviews

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.0

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,861 reviews

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.0

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
WestJet
7.2
Good
2,917 reviews
United Airlines
7.4
Good
8,861 reviews

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.0

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
Iberia
7.0
Good
2,820 reviews
United Airlines
7.4
Good
8,861 reviews

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.0

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
Lufthansa
6.8
Okay
7,207 reviews
United Airlines
7.4
Good
8,861 reviews

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.0

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

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. 1 airline has flights to Ontario from Frankfurt am Main on a regular basis.

  • What are the cheapest airlines flying from Frankfurt am Main Airport to Ontario round-trip?

    Currently priced at $576, British Airways will fly you from Frankfurt am Main Airport to Ontario and back. In addition to British Airways, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and Iberia - these airlines can fly you to your destination from $603 and $626, respectively. British Airways is priced at 26% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Frankfurt am Main Airport to Ontario one-way?

    For one-way options, check prices for Lufthansa. According to our data, you can fly for as low as $722. Users have also found prices from $893 and $899 on American Airlines and British Airways, respectively.

  • 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, August is the cheapest month in which you can book a flight from Frankfurt am Main Airport to Ontario (average of $246). Flying from Frankfurt am Main Airport 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Frankfurt to Ontario

Discover the top airline that operate flights from Frankfurt to Ontario. 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$632Average$1,387FlexibilityNo cancel feeOn-time69%

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