ONT - FRA

$394 Find Cheap Flights from Ontario to Frankfurt am Main - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Frankfurt departing on 8/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$767
Typical prices: $752-$1,040
United Airlines
Tue 11/10Thu 11/12
ONT - FRA • 1 stop
Cheapest one-way
$394
Multiple Airlines
Mon 8/3
ONT - FRA • 1 stop
Top airlines
Cheapest • from $767 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Ontario and Frankfurt. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $746 (round-trip)
Shortest trip • 14h 30m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Frankfurt!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Frankfurt (ONT-FRA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Frankfurt that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Frankfurt

Tue, Nov 10 - Thu, Nov 12
United Airlines Logo
1:52 pm - 10:30 am
ONT
-
FRA
35h 38m
1 stop
United Airlines Logo
4:10 pm - 6:29 pm
FRA
-
ONT
35h 19m
2 stops
$767United Airlines
Mon, Aug 17 - Mon, Aug 24
Multiple Airlines Logo
7:00 am - 10:50 am
ONT
-
FRA
18h 50m
1 stop
Multiple Airlines Logo
11:30 am - 8:24 pm
FRA
-
ONT
17h 54m
1 stop
$770Multiple Airlines
Mon, Aug 17 - Mon, Aug 31
Multiple Airlines Logo
7:00 am - 10:50 am
ONT
-
FRA
18h 50m
1 stop
Multiple Airlines Logo
11:30 am - 5:10 pm
FRA
-
ONT
14h 40m
1 stop
$774Multiple Airlines
Sat, Sep 12 - Sat, Sep 19
Multiple Airlines Logo
10:47 am - 10:30 am
ONT
-
FRA
14h 43m
1 stop
Multiple Airlines Logo
11:45 am - 8:13 pm
FRA
-
ONT
17h 28m
1 stop
$777Multiple Airlines
Mon, Aug 17 - Tue, Sep 1
Multiple Airlines Logo
10:54 am - 10:50 am
ONT
-
FRA
14h 56m
1 stop
Multiple Airlines Logo
11:40 am - 10:37 pm
FRA
-
ONT
19h 57m
1 stop
$782Multiple Airlines
Sun, Nov 8 - Sun, Nov 22
Air France Logo
7:05 am - 7:50 am
ONT
-
FRA
15h 45m
1 stop
Air France Logo
10:40 am - 10:14 pm
FRA
-
ONT
20h 34m
1 stop
$805Air France
Tue, Nov 3 - Tue, Nov 17
Air France Logo
7:05 am - 7:50 am
ONT
-
FRA
15h 45m
1 stop
Air France Logo
10:40 am - 6:18 pm
FRA
-
ONT
16h 38m
1 stop
$807Air France
Wed, Nov 4 - Wed, Nov 18
British Airways Logo
6:10 am - 7:15 am
ONT
-
FRA
16h 05m
1 stop
British Airways Logo
10:55 am - 9:11 pm
FRA
-
ONT
19h 16m
1 stop
$814British Airways
Thu, Aug 13 - Tue, Sep 8
Delta Logo
7:05 am - 8:55 am
ONT
-
FRA
16h 50m
1 stop
Delta Logo
2:15 pm - 4:35 pm
FRA
-
ONT
35h 20m
2 stops
$834Delta
Sat, Aug 8 - Sat, Aug 22
Air France Logo
7:05 am - 8:55 am
ONT
-
FRA
16h 50m
1 stop
Air France Logo
10:40 am - 6:30 pm
FRA
-
ONT
16h 50m
1 stop
$835Air France
Booking Insights

KAYAK's insights & trends for Ontario to Frankfurt flights

Get data-powered insights and trends into flights from Ontario to Frankfurt to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Ontario to Frankfurt am Main Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Frankfurt am Main Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ontario to Frankfurt am Main Airport is January, where tickets cost $0 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $1,582 and $1,367 respectively.

Good to know

Low seasonMarch
Cheapest flight$394
Best time to beat the crowds with an average 38% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from Ontario to Frankfurt am Main

When to book flights from Ontario to Frankfurt

Are your dates flexible? Find out the best times to travel from Ontario to Frankfurt based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Ontario to Frankfurt am Main flights

  • What is the cheapest flight from Ontario to Frankfurt am Main Airport?

    In the last 5 days, the lowest price for a flight from Ontario to Frankfurt am Main Airport was $394 for a one-way ticket and $767 for a round-trip.

  • Do I need a passport to fly between Ontario and Frankfurt am Main?

    A passport is required to fly from Ontario to Frankfurt am Main.

  • Which aircraft models fly most regularly from Ontario to Frankfurt am Main?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Frankfurt am Main?

    oneworld, and Star Alliance are the airline alliances operating flights between Ontario and Frankfurt am Main, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Ontario to Frankfurt am Main, United Airlines or British Airways?

    The two airlines most popular with KAYAK users for flights from Ontario to Frankfurt am Main are United Airlines and British Airways. With an average price for the route of $754 and an overall rating of 7.4, United Airlines is the most popular choice. British Airways is also a great choice for the route, with an average price of $918 and an overall rating of 6.7.

  • How does KAYAK find such low prices on flights from Ontario to Frankfurt am Main?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Frankfurt am Main.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Frankfurt am Main?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Frankfurt am Main from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Frankfurt am Main?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Frankfurt am Main with an airline and back to Ontario with another airline. Booking your flights between Ontario and FRA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Frankfurt am Main?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Frankfurt am Main from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Ontario to Frankfurt

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Frankfurt am Main. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Frankfurt? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9948 reviews
7.1Entertainment
6.7Food
7.3Comfort
7.7Boarding
8.1Crew
Airline reviews

United has maintenance issues and can then never recover. No operations ability and simple issues always turn into multiple hours long cascading delays. Worst airline on earth.

2.0 MediocreGray, Jun 2026
SFO - FRA
Read more United Airlines reviews

United has maintenance issues and can then never recover. No operations ability and simple issues always turn into multiple hours long cascading delays. Worst airline on earth.

Food was surprisingly delicious. Space in the seat is horrible when the seating front is reclined. Movie offerings were terrible. Crew was friendly and helpful.

Due to cancellation of connecting flight (Lufthansa) I didn’t fly with United

from SFO-> FRA flight, AVML meal was significantly less compared to regular meal, especially no Desert, no Bread, no sides.

The food was the worst I’ve had on any flight I’ve ever been on.

Some of the issues with my UA flight to a connecting flight: United said the SF to Frankfurt flight was getting late making us miss 10:50 flight and could only put us on a flight that left at 4:15 PM from biz to coach. then they canceled the ticket on the connecting flight. I didn’t have a seat, etc., etc., and over an hour dealing with UNITED blaming Lufthansa and Lufthansa pointing to UNITED. The flight itself was fine (food sucked) and we landed in time that I could’ve made the 1050 flight. but the LH gate agent said I couldn’t get on because United issued the ticket and only they could change tix back. Gave up and wasted the next five hours plus of our vacation and ended up being totally wiped out by the time we reached the hotel.

Everyone on board was great. It was just super late and we missed our connection in Frankfurt, and had to power through jet lag while we waited 4 hours in the terminal. My family missed a big welcome dinner in Berlin.

Frankfurt airport is the worst. Passengers are forced to use stairs to get to the terminal or catch a shuttle. Very inconvenient for passengers who are ambulatory challenged or have physical handicaps.

Hated every minute of it. This flight should have only taken 1.5hrs but was delayed over 10hours. Now I am being told I cannot be compensated or refunded my ticket price or extra leg room, which I purchased but did not receive, because the airline is throwing the blame on the 3rd party I purchased tickets through and 3rd party putting the blame on airline. No one wants to help. They received their money and that's all they care about. Im going on 3 days of still trying to get to my final destination, had to cancel car rental, car insurance and hotel. Currently staying in airport until hotels open up. Thank you Lufthansa, Kayak, Underpricer and United for making this trip the worst ever.

I really enjoyed the staff and crew! Very positive and happy people! Made the experience easier! The entertainment was a bit lack luster. Better movie options as well as equipment that works smoother could be nice. My ear buds from the airline didn’t work and my tv screen had a terrible delay that made it hard to search for things to watch. Also the selections were very limited.

I was booked in Premium Economy and never given a chance to choose to purchase my own seat. Ended up with a middle seat, which was very difficult for me. The airline then left my bag in London so when I arrived in Instanbul it was not there. They delivered it to me the next day but many valuable items had been stolen. I've been flying with BA for years and this was the first time I had such a bizarre and bad experience with them.

Canceled flight late London to Florence. Help at airport very poor. Treated poorly. Had to sleep in the airport. Lost bags- still do not have them. Horrible. I should be reimbursed!

Boarding was orderly, pilot and flight attendants were nice, entertainment options were good, and low sodium meals were quite tasty.

Flight delayed, connection was not at gate listed and so missed, staff were rude at Heathrow, phone tree stupid and difficult, took me 21 actual hours to reach my destination. Almost lost my hotel reservation after walking in a strange city alone after midnight because they would not put me up in a hotel at sfo or heathrow. I will never fly BA again and will tell all people and Instagram followers never to fly BA.

Check-in in SAN was long. ORD was good. Flight delayed On board crew was ok. No warmth or personality. LHrR barely made connection

Wish the food and overall service was better. They treat Business class passengers same as economy

The flight was delayed due to snow in Frankfurt. There wasn't much information from BA or the airport, but Kayak was great and kept me informed of the delay and gate changes.

LCY airport is an amazing airport and I love the flight from LCY to FRA with BA. Efficient, easy, comfortable and great luggage allownace with BA. I iused to fly predominantley LH, but the service and price - benefit ratio of Lufthansa has deteriorated a lot over the last 5 years. Whereas BA keeps an excellent service level with friendly staff.

Flight delayed due to changing a tire....so complete itinerary had to be changed....resulting in delayed arrival. Despite assertions it would be there checked bag didn't arrive til 24 hours later.

Inflight service could have been better. Overall experience was okay

Everything you need to know for your flight from Ontario to Frankfurt

Information on your arrival and departure airports