ONT - FRA

$413 Find Cheap Flights from Ontario to Frankfurt am Main

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 10/15. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Frankfurt am Main Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Frankfurt am Main, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Frankfurt am Main, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Ontario to Frankfurt am Main (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 am Main 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

Thu, Nov 6 - Tue, Nov 11
United Airlines Logo
6:00 am - 7:25 amONT-FRA
16h 25m2 stops
United Airlines Logo
9:45 am - 10:31 pmFRA-ONT
45h 46m2 stops
$695United Airlines
Find Deal
Thu, Nov 6 - Thu, Nov 20
British Airways Logo
7:00 am - 7:15 amONT-FRA
15h 15m1 stop
British Airways Logo
10:15 am - 6:22 pmFRA-ONT
17h 07m1 stop
$711British Airways
Find Deal
Fri, Oct 31 - Sun, Nov 9
United Airlines Logo
6:00 am - 9:35 amONT-FRA
19h 35m1 stop
United Airlines Logo
11:30 am - 10:51 pmFRA-ONT
20h 21m2 stops
$718United Airlines
Find Deal
Tue, Dec 23 - Tue, Jan 6
Air Canada Logo
5:05 am - 7:55 amONT-FRA
41h 50m2 stops
Air Canada Logo
1:40 pm - 8:58 pmFRA-ONT
40h 18m2 stops
$740Air Canada
Find Deal
Tue, Oct 7 - Tue, Oct 21
British Airways Logo
8:15 am - 8:45 amONT-FRA
15h 30m1 stop
British Airways Logo
10:55 am - 6:52 pmFRA-ONT
16h 57m1 stop
$741British Airways
Find Deal
Sun, Oct 12 - Mon, Oct 27
Iberia Logo
8:15 am - 8:45 amONT-FRA
15h 30m1 stop
Iberia Logo
10:15 am - 10:18 pmFRA-ONT
20h 03m1 stop
$750Iberia
Find Deal
Sun, Oct 12 - Mon, Oct 27
Iberia Logo
8:15 am - 8:45 amONT-FRA
15h 30m1 stop
Iberia Logo
10:15 am - 10:18 pmFRA-ONT
20h 03m1 stop
$751Iberia
Find Deal
Sun, Oct 19 - Fri, Oct 31
Delta Logo
7:05 am - 8:55 amONT-FRA
16h 50m1 stop
Delta Logo
10:40 am - 9:20 pmFRA-ONT
18h 40m2 stops
$753Delta
Find Deal
Sun, Oct 19 - Fri, Oct 31
Air Canada Logo
6:27 pm - 8:10 amONT-FRA
28h 43m2 stops
Air Canada Logo
9:45 am - 8:44 pmFRA-ONT
42h 59m2 stops
$760Air Canada
Find Deal
Tue, Dec 23 - Tue, Jan 6
Delta Logo
11:45 am - 8:40 amONT-FRA
35h 55m1 stop
Delta Logo
9:50 am - 11:38 amFRA-ONT
34h 48m1 stop
$761Delta
Find Deal

Everything you should know

Top airlines
United Airlines
Cheapest • from $695 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
September
Cheapest • 21% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$695
Overall average: $747
United Airlines
Thu 11/6Tue 11/11
ONT - FRA • 2 stops
Cheapest one-way
$413
Multiple Airlines
Wed 10/15
ONT - FRA • 3 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Frankfurt!
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’s the cheapest day of the week to fly from Ontario to Frankfurt am Main?

The average price of all round-trip flights from Ontario to Frankfurt am Main Airport clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Frankfurt am Main on a Thursday and more expensive on a Monday. On your return trip to Ontario, you should consider flying back on a Friday, and avoid Sundays for better deals.

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 September, where tickets cost $746 (return) on average. On the other hand, the most expensive months are May and June, where the average cost of round-trip tickets is $1,444 and $1,406 respectively.

Good to know

Low seasonFebruary
Cheapest flight$413
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly and prices are also 10% lower on average.
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 3 days, the lowest price for a flight from Ontario to Frankfurt am Main Airport was $413 for a one-way ticket and $695 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, Star Alliance, and SkyTeam 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 $912 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 $830 and an overall rating of 6.6.

  • 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 8929 reviews
7.3Comfort
7.1Entertainment
8.1Crew
6.6Food
7.7Boarding
Airline reviews

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

2.0 MediocreAnonymous, Sep 2025SFO - MEX
Read more United Airlines reviews

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

Everything was good, except the seats in economy were so close together, you could barely get out when the seat in front of your was reclined. If the airlines keep jamming in more and more seats, it will become intolerable. I will look for another airline that considers customer comfort and does not keep adding more rows of seats for more profit.

From the first moment you interact with United Airlines, you can expect nothing less but extreme frustration. The baggage handler at the bag drop seems completely unbothered by the presence of customers waiting in line. No help was extended to load the baggage whatsoever. And if any of your bags is overweight by 0.01 pound they will make you re-distribute everything in your suitcase just to play power trip. When it was time to board no help was extended to customers to locate their seats. Moreover. It was a chaotic mess at the gate when it was unclear who should board first and everyone just bunched up, trying to get on the plane. I am sure the crew was doing their best to perform their jobs while being paid their wages however it shouldn’t be that hard to smile once or twice when you’re in the business if serving customers. It is a shame for the United States of America to have a flagship carrier of such low caliber. Our flight was also delayed by about an hour and a half due to further delays prior to our inbound flight. Being someone who has travelled for both business and leisure in Asia, Europe, and South America I have never experienced such poor quality of service.

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

The pilots were late and it made us 1 hour late. The meat was tough and bok choy was also tough.

Inoperable monitor left no entertainment for 9 hours. The crew was not helpful. Food was awful.

Stuck on tarmac for two hours plus a 5.5 hour flight. Rude flight attendant. And no meals, not even for purchase!

Flight was delayed and missed my connection Lufthansa didn’t respond.

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

The best airline I have ever travel , really good customer service, attention and service !!

Crying baby the ENTIRE flight. Not your fault, but I paid 2700 for a premium economy ticket and it wasn't worth it. should have just stuck with coach. flight attendants very mediocre - minimal effort. Plane didn't seem very clean. Didn't have any cleansing wipes - most airlines give you this when you board. Flat screen scrolling didn't work. Toiletry case a joke - why bother at all?

Enjoyable flight, helpful crew everything was organized to accommodate passengers.

I was transferred to an American Airlines flight. The boarding was late and unorganized. The seating was extremely tight and uncomfortable. Will not use AA again.

The check-in of my luggage was terrible. When purchased my tickets, one luggage and one carry-on was part of the fight. My flight was switched from British to American Airline. During check-in of luggage at the airport, I was denied and had to pay extra $75. How do I get reimbursed for this extra luggage payment?

This was the second time on BA, food terrible, bathrooms gross,( granted, that was mostly due to the disgusting children urinating all over it)boarding was late and disorganized. No gate issued until last minute st Heathrow, bad system, caused undue stress. Seats were painful, that's what you get for traveling like a poor in economy, right BA? Should have been able to afford business or first class if you want to actually be able to walk upright without back pain after a trip.

The delay was not communicated via text and the person who helped with check in also didn’t inform me about the delay. I ended up missing my connection and it was a waste of 5 hours. The crew didn’t mention there would be someone at the gate informing of if I would be rebooked and there was no signage. Overall a very poor experience. The British Airways app was also very buggy, and didn’t work. I will avoid flying with British Airways when possible.

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.

Cancelled flight minutes before boarding. Rescheduled flight was two days later

The flight attendants were EXTREMELY personable and appreciated the service, lights going off after dinner (probably the norm, but I haven’t flown evening overnight flights in a while). Thank you!

Business class seats were very dated on my plane. Very little storage, charging ports were not easily accessible, tv screen kept flopping away. Vegetarian food was disappointing: hardly any protein and severely under-seasoned. Crew was lovely.

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

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