ONT

392€ Find Cheap Flights to Ontario – Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest return flight
551 €
Typical prices: 607 €-838 €
British Airways
Sat 1.12.Sat 8.12.
HAM - ONT • 2 stops
Cheapest one-way flight
392 €
Typical prices: 460 €-712 €
Multiple Airlines
Mon 29.1.
HAM - ONT • 2 stops
Top airlines
Best reviews • 7,8 score
Airline reviews
Airline reviews
Top routes
Cheapest • 13% average savings
Most popular
Insights
Insights
When to travel
Cheapest • 16% price drop
Most popular
Good to know
+1
Good to know
+1
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We hope you enjoy your trip to Ontario!
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Booking Insights
Flight Deals

Cheap Flights to Ontario

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals to Ontario

Tue, 1. Dec - Tue, 8. Dec
British Airways Logo
6:10 - 18:52Hamburg  Hamburg-Ontario Ontario
21h 42m2 stops London Heathrow Dallas/Fort Worth
British Airways Logo
14:22 - 17:35Ontario  Ontario-Hamburg Hamburg
18h 13m2 stops Dallas/Fort Worth London Heathrow
551 €British Airways
3+ days ago
Thu, 29. Oct - Wed, 11. Nov
British Airways Logo
6:45 - 18:44Hamburg  Hamburg-Ontario Ontario
19h 59m2 stops London Heathrow Dallas/Fort Worth
British Airways Logo
14:22 - 18:45Ontario  Ontario-Hamburg Hamburg
19h 23m2 stops Dallas/Fort Worth London Heathrow
552 €British Airways
3+ days ago
Tue, 8. Dec - Mon, 14. Dec
American Airlines Logo
9:55 - 22:07Berlin  Berlin Brandenburg-Ontario Ontario
21h 12m2 stops London Heathrow Charlotte Douglas
American Airlines Logo
16:51 - 19:05Ontario  Ontario-Berlin Berlin Brandenburg
17h 14m2 stops Phoenix Sky Harbor Intl London Heathrow
555 €American Airlines
3+ days ago
Wed, 9. Dec - Mon, 14. Dec
American Airlines Logo
11:10 - 22:07Berlin  Berlin Brandenburg-Ontario Ontario
19h 57m2 stops London Heathrow Charlotte Douglas
American Airlines Logo
16:51 - 19:05Ontario  Ontario-Berlin Berlin Brandenburg
17h 14m2 stops Phoenix Sky Harbor Intl London Heathrow
555 €American Airlines
3+ days ago
Tue, 10. Nov - Sun, 22. Nov
American Airlines Logo
9:55 - 22:12Berlin  Berlin Brandenburg-Ontario Ontario
21h 17m2 stops London Heathrow Charlotte Douglas
American Airlines Logo
16:25 - 18:15Ontario  Ontario-Berlin Berlin Brandenburg
16h 50m2 stops Phoenix Sky Harbor Intl London Heathrow
556 €American Airlines
3+ days ago
Sun, 15. Nov - Sun, 22. Nov
American Airlines Logo
11:05 - 21:32Berlin  Berlin Brandenburg-Ontario Ontario
19h 27m2 stops London Heathrow Dallas/Fort Worth
American Airlines Logo
16:25 - 18:15Ontario  Ontario-Berlin Berlin Brandenburg
16h 50m2 stops Phoenix Sky Harbor Intl London Heathrow
556 €American Airlines
3+ days ago
Sat, 14. Nov - Sun, 22. Nov
American Airlines Logo
12:00 - 22:57Berlin  Berlin Brandenburg-Ontario Ontario
19h 57m2 stops London Heathrow Dallas/Fort Worth
American Airlines Logo
16:25 - 18:15Ontario  Ontario-Berlin Berlin Brandenburg
16h 50m2 stops Phoenix Sky Harbor Intl London Heathrow
556 €American Airlines
3+ days ago
Wed, 9. Dec - Mon, 14. Dec
American Airlines Logo
11:10 - 22:07Berlin  Berlin Brandenburg-Ontario Ontario
19h 57m2 stops London Heathrow Charlotte Douglas
American Airlines Logo
16:51 - 19:05Ontario  Ontario-Berlin Berlin Brandenburg
17h 14m2 stops Phoenix Sky Harbor Intl London Heathrow
556 €American Airlines
3+ days ago
Thu, 12. Nov - Thu, 19. Nov
United Airlines Logo
11:20 - 20:15Frankfurt am Main  Frankfurt am Main-Ontario Ontario
17h 55m2 stops Zurich San Francisco
United Airlines Logo
6:00 - 9:10Ontario  Ontario-Frankfurt am Main Frankfurt am Main
18h 10m2 stops Houston George Bush Intcntl Newark
596 €United Airlines
3+ days ago
Wed, 4. Nov - Wed, 11. Nov
United Airlines Logo
11:20 - 20:15Frankfurt am Main  Frankfurt am Main-Ontario Ontario
17h 55m2 stops Zurich San Francisco
United Airlines Logo
7:00 - 9:10Ontario  Ontario-Frankfurt am Main Frankfurt am Main
17h 10m2 stops Chicago O'Hare Intl Newark
596 €United Airlines
2 days ago
Booking Insights

Price, demand, and travel trends for flights to Ontario

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

What is the cheapest flight to Ontario?

Hamburg to Ontario is the cheapest route at 551 € return, found in the past 5 days on KAYAK. Frankfurt am Main Airport to Ontario is the most popular connection with return deals from 596 €.

How much is a flight to Ontario?

On average, a return flight from Germany to Ontario costs 703 €, based on KAYAK data over the past 12 months. Return fares from Hamburg average 614 €, while Berlin runs a bit higher at 616 €.

What is the cheapest day to fly to Ontario?

Monday is the cheapest day to fly to Ontario at 558 € return on average over the past 12 months on KAYAK. Saturday is the most expensive at 849 €.

What is the cheapest time of day to fly to Ontario?

Morning flights to Ontario are the cheapest at 680 € return on average. Afternoon flights are the most expensive at 782 €.

What is a good deal for flights to Ontario?

Flights under 607 € are considered a good deal. 25% of KAYAK users found return flights to Ontario at or below these prices, with the lowest fares from:
•Berlin 574 €
•Hamburg 605 €
•Frankfurt am Main Airport 607 €.

Key details for flights to Ontario

Low season

April

Cheapest flight

392 €
Beat the crowds with an average 61% drop in traveller numbers.
The most popular month to fly with an average 64% increase in traveller numbers.
One-way flight from Hamburg to Ontario

When to book flights to Ontario

Are your dates flexible? Find out the best times to travel to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your questions about flights to Ontario, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • How do I know if a flight to Ontario is a good deal?

    A good deal on a flight to Ontario is around 607 € return. This fare is in the lowest 25% of return flight prices searched on KAYAK, averaged across the cities most often searched as origins by KAYAK users.

  • Which city has the cheapest flights to Ontario?

    Based on fares booked in the past 5 days, the cheapest flights to Ontario are from Frankfurt am Main, starting at 596 € return.

  • What is the difference between the most popular and the most frequent airline at Ontario?

    Condor operates the most flights from Germany to Ontario at 0 per week, while United Airlines is the airline most often selected by KAYAK users searching for flights from Germany to Ontario. The two are often different because flight volume reflects an airline's schedule, while popularity reflects traveller choice.

Your guide to booking Ontario flights

From booking to airport arrival, find tips to help you plan your flight with more confidence.
  • For flights to Ontario, a good return fare is around 607 €. If you find a fare below that, you're getting a strong deal.
  • If your travel dates are flexible, consider flying to Ontario in November. Return fares historically average 592 €, making November the cheapest month to travel based on KAYAK data from the last 12 months.
  • Before you book:

    • Check the route's typical price range so you can spot a deal.
    • Confirm baggage fees and seat selection costs on budget carriers.
    • Verify whether you need any travel documents beyond an ID.
    • Pick a departure airport, since your nearest may not be the cheapest origin.
  • Shift your departure to morning to save up to 103 € on a return flight. Morning flights to Ontario average 680 € compared to 782 € for midday flights.

Reviews of the top airline flying to Ontario

 
Need help choosing which airline to fly with to Ontario? 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 10377 reviews
7,1Entertainment
7,3Comfort
6,7Food
7,7Boarding
8,1Crew
Airline reviews

Good food and entertainment. Poor choices for drinks. Sitting for 12 hours on the row by the restrooms, which do not recline, was a torture

6,0 GoodAnonymous, Oct 2026
Read more United Airlines reviews

Good food and entertainment. Poor choices for drinks. Sitting for 12 hours on the row by the restrooms, which do not recline, was a torture

premium economy is expensive but worth it for the comfort and food on a long flight

The flight was excellent. Their was no service as we boarded, the flight attendants spent about 30 minutes just taking and not really caring that the cabin was about 80 degrees and did not offered any beverage to first class passengers or any passenger. The flight from DEN to ONT is not long but not under an hour, we received one drink and bag of chips if you were lucky. I was in first class…. I did leave my hat on the plane and it only took less than five minutes for a United rep to locate and bring it to me.

United was excellent. We had very good experience flying the carrier. Certainly. We will opt to fly them for sure. Lufthansa is out.

Crew was great! Good meals. Had room to stretch out

Meals were poor and service rendered on return flight was mediocre as compared to the flight we took to Germany earlier where the attendants were more attentive, energetic, and mindful of passengers' needs. Thumbs up to crew of UA 58. Thumbs down to UA 59..

We got to get extended leg room in Econ plus that was great. It was nice having our own dietary needs met with our meals, and the connecting flights had it as well. Only negative were the seats my bottom was/is really sore after a ten plus hour flight. Those seats are horrible, understandable for as many people use them. So we are going to purchase a gel seat pad.

Ok. Get a different kosher caterer. The food was odd.

The flight was delayed so the people from a late connecting flight was able to still make the connection.

Airline did not explain reasons why flight was delayed two hours. Explanations were badly needed and rarely provided. Problem seemed to clearly be the airline’s fault and not the fault of the weather or airport.

More options for your flight to Ontario