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Heidelberg

$402+ Cheap flights from Ontario (ONT) to Heidelberg, Germany

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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FRA
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheap flight deals from Ontario to Heidelberg

Keep the following information in mind while searching for Ontario to Heidelberg flight deals. Data was last updated July 31, 2025.

Round-trip from

$675
(Billigflug)

One-way from

$402
(Trip.com)

Popular in

May

Cheapest in

August

Average price

$1,101
From Ontario to Heidelberg
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One-way flight from Ontario to Heidelberg
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Highest demand for flights based on searches. 19% potential increase in price ($228 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($33 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 Ontario to Heidelberg

Cheapest flights from Ontario to Heidelberg
Explore the most affordable flight options available from Ontario to Heidelberg. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

This Billigflug deal was found by Cheapflights users on 7/31. 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.
Sun 8/107:05 amONT - FRA
1 stop16h 50mMultiple Airlines
Tue 8/1910:40 amFRA - ONT
1 stop32h 55mMultiple Airlines
Deal found 7/31$675
This AirNGo deal was found by Cheapflights users on 7/31. 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.
Sun 8/106:31 pmONT - FRA
2 stops27h 39mAir Canada
Tue 8/1910:15 amFRA - ONT
2 stops40h 22mAir Canada
Deal found 7/31$694
This American Airlines deal was found by Cheapflights users on 7/31. 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 8/78:14 amONT - FRA
1 stop15h 31mAmerican Airlines
Wed 8/2010:55 amFRA - ONT
1 stop16h 29mAmerican Airlines
Deal found 7/31$704
This lol.travel deal was found by Cheapflights users on 7/31. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/156:10 amONT - FRA
1 stop17h 35mBritish Airways
Thu 8/2810:55 amFRA - ONT
1 stop16h 30mBritish Airways
Deal found 7/31$708
This Iberia deal was found by Cheapflights users on 7/30. 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 8/98:14 amONT - FRA
1 stop15h 31mIberia
Fri 8/2210:55 amFRA - ONT
1 stop20h 53mIberia
Deal found 7/30$712
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Mon 12/17:00 amONT - FRA
1 stop14h 35mUnited Airlines
Mon 12/151:20 pmFRA - ONT
1 stop18h 29mUnited Airlines
Deal found 7/31$716
This TUI fly deal was found by Cheapflights users on 7/30. 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 TUI fly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/67:05 amONT - FRA
1 stop16h 50mKLM
Tue 8/1910:40 amFRA - ONT
1 stop20h 40mKLM
Deal found 7/30$724

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Heidelberg 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 31, 2025.
Use the filters below to find and compare flights from Ontario to Heidelberg that are best for you.

Fly from

Ontario

Fly to

Heidelberg

Route

Depart

Return

Price

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Sun 8/10

7:05 am-8:55 am

1 stop16h 50m

Frankfurt am Main

Tue 8/19

10:40 am-10:35 am

1 stop32h 55m

$675

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Sun 8/10

6:31 pm-7:10 am

2 stops27h 39m

Frankfurt am Main

Tue 8/19

10:15 am-5:37 pm

2 stops40h 22m

$694

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Sun 8/10

7:05 am-8:40 am

2 stops16h 35m

Frankfurt am Main

Tue 8/19

10:40 am-7:11 pm

1 stop17h 31m

$704

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Fri 8/15

6:10 am-8:45 am

1 stop17h 35m

Frankfurt am Main

Thu 8/28

10:55 am-6:25 pm

1 stop16h 30m

$708

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Mon 12/1

1:40 pm-2:55 pm

1 stop16h 15m

Frankfurt am Main

Mon 12/15

12:50 pm-10:49 pm

2 stops18h 59m

$716

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Mon 8/25

8:14 am-8:45 am

1 stop15h 31m

Frankfurt am Main

Mon 9/8

10:55 am-6:54 pm

1 stop16h 59m

$733

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Mon 8/25

8:14 am-8:45 am

1 stop15h 31m

Frankfurt am Main

Mon 9/8

10:55 am-6:54 pm

1 stop16h 59m

$742

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Sun 8/31

6:00 am-1:05 pm

1 stop22h 05m

$402

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Wed 10/8

7:05 am-8:55 am

1 stop16h 50m

$462

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Thu 10/9

8:15 am-8:45 am

1 stop15h 30m

$468

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 17 results
1
2

Best time to book a flight from Ontario to Heidelberg

Have a flexible travel schedule? Discover the best time to fly to Heidelberg from Ontario 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 Ontario to Heidelberg

What is the cheapest month to book a flight from Ontario to Heidelberg?

Currently, January is the cheapest month in which you can book a flight from Ontario to Heidelberg (average of $729). Flying from Ontario to Heidelberg in June is currently the most expensive (average of $1,088). 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.

What is the cheapest time of day to fly from ONT to HE1?

Find hourly flight availability from Ontario to Heidelberg. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 31, 2025.

When flying from Ontario to Heidelberg, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Ontario to Heidelberg?

Reviews of airlines servicing Heidelberg

Get insights into the airlines that provide service to Heidelberg. 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 Heidelberg. Reviews last updated July 31, 2025.
Read through reviews of airlines operating flights from Ontario to Heidelberg, such as Delta, KLM, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,981 reviews

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,900 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Virgin Atlantic
7.4
Good
655 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Heidelberg. 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 from for flights from Ontario to Heidelberg?

    Most people fly from Ontario (ONT) if they book a flight from Ontario to Heidelberg. On average, Ontario has 0 outbound flights to Heidelberg per day from 2 airlines. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

  • What are the cheapest airlines to fly from Ontario to Heidelberg one-way?

    The cheapest airline one-way is Virgin Atlantic, with whom users have recently found tickets for as low as $462. However, be on the lookout for offers from American Airlines and British Airways, as they are both options that can get you from Ontario to Heidelberg for a low price.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Heidelberg 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 Ontario to Heidelberg?

    Currently, January is the cheapest month in which you can book a flight from Ontario to Heidelberg (average of $729). Flying from Ontario to Heidelberg in June is currently the most expensive (average of $1,088). 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

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Top 2 airlines flying from Ontario to Heidelberg

Discover the top 2 airlines that operate flights from Ontario to Heidelberg. 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 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$744Average$961FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$752Average$830FlexibilityNo cancel feeOn-time70%

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