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Heidelberg

$395+ 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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FRA
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
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 September 17, 2025.

Round-trip from

$705
(Gotogate)

One-way from

$395
(Kiwi.com)

Popular in

May

Cheapest in

September

Average price

$746
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. 24% potential increase in price ($312 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($46 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 17, 2025.

This Gotogate deal was found by Cheapflights users on 9/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/216:10 amONT - FRA
1 stop17h 35mBritish Airways
Tue 11/410:50 amFRA - ONT
1 stop17h 51mBritish Airways
Deal found 9/17$705
This American Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 11/46:10 amONT - FRA
1 stop16h 05mAmerican Airlines
Sun 11/910:15 amFRA - ONT
1 stop17h 07mAmerican Airlines
Deal found 9/15$711
This American Airlines deal was found by Cheapflights users on 9/17. 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.
Tue 10/218:15 amONT - FRA
1 stop15h 30mAmerican Airlines
Tue 11/410:50 amFRA - ONT
1 stop17h 51mAmerican Airlines
Deal found 9/17$714
This United Airlines deal was found by Cheapflights users on 9/15. 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 12/31:50 pmONT - FRA
1 stop16h 05mUnited Airlines
Thu 12/1111:10 amFRA - ONT
1 stop18h 32mUnited Airlines
Deal found 9/15$718
This Iberia deal was found by Cheapflights users on 9/17. 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.
Fri 11/2810:47 amONT - FRA
2 stops19h 53mMultiple Airlines
Thu 12/410:15 amFRA - ONT
1 stop21h 04mMultiple Airlines
Deal found 9/17$723
This Air Canada deal was found by Cheapflights users on 9/16. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/57:00 amONT - FRA
2 stops15h 55mMultiple Airlines
Wed 11/191:40 pmFRA - ONT
2 stops18h 11mMultiple Airlines
Deal found 9/16$724
This Air Canada deal was found by Cheapflights users on 9/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/35:05 amONT - FRA
2 stops17h 20mMultiple Airlines
Wed 12/1010:05 amFRA - ONT
2 stops19h 37mMultiple Airlines
Deal found 9/17$725
This United Airlines deal was found by Cheapflights users on 9/17. 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 10/157:02 amONT - FRA
1 stop14h 28mUnited Airlines
Wed 10/229:55 amFRA - ONT
2 stops45h 35mUnited Airlines
Deal found 9/17$726
This Air Canada deal was found by Cheapflights users on 9/15. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/47:00 amONT - FRA
2 stops15h 55mMultiple Airlines
Tue 11/181:40 pmFRA - ONT
2 stops18h 11mMultiple Airlines
Deal found 9/15$731
This Expedia deal was found by Cheapflights users on 9/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/78:15 amONT - FRA
1 stop15h 30mBritish Airways
Tue 10/2110:55 amFRA - ONT
1 stop16h 57mBritish Airways
Deal found 9/16$741
This lol.travel deal was found by Cheapflights users on 9/16. 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.
Mon 10/68:15 amONT - FRA
1 stop15h 30mBritish Airways
Tue 10/2110:55 amFRA - ONT
1 stop16h 57mBritish Airways
Deal found 9/16$744

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 September 17, 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

Thu 2/12

6:00 am-7:15 am

1 stop16h 15m

Frankfurt am Main

Thu 2/26

10:15 am-9:57 pm

1 stop20h 42m

$718

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Fri 11/28

6:00 am-2:55 pm

1 stop23h 55m

Frankfurt am Main

Mon 12/8

10:10 am-10:49 pm

1 stop21h 39m

$718

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Tue 2/17

6:47 am-7:15 am

1 stop15h 28m

Frankfurt am Main

Tue 3/3

10:15 am-5:51 pm

1 stop16h 36m

$718

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Tue 11/4

5:05 am-9:20 am

1 stop19h 15m

Frankfurt am Main

Tue 11/18

5:25 pm-10:51 pm

1 stop14h 26m

$718

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Fri 2/13

6:00 am-7:15 am

1 stop16h 15m

Frankfurt am Main

Fri 2/27

10:15 am-5:51 pm

1 stop16h 36m

$718

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Mon 10/27

8:15 am-7:15 am

1 stop15h 00m

Frankfurt am Main

Thu 11/6

10:15 am-6:22 pm

1 stop17h 07m

$718

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Wed 11/5

6:00 am-9:35 am

1 stop18h 35m

Frankfurt am Main

Wed 11/19

5:25 pm-10:51 pm

1 stop14h 26m

$718

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Fri 11/7

6:10 am-7:15 am

1 stop16h 05m

Frankfurt am Main

Fri 11/21

10:15 am-6:22 pm

1 stop17h 07m

$718

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Wed 12/3

1:50 pm-2:55 pm

1 stop16h 05m

Frankfurt am Main

Thu 12/11

11:10 am-8:42 pm

1 stop18h 32m

$718

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Tue 11/4

7:00 am-7:15 am

1 stop15h 15m

Frankfurt am Main

Tue 11/18

10:15 am-6:21 pm

1 stop17h 06m

$718

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 22 results
1
2
3

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 $1,091). 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 September 17, 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.

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 September 17, 2025.
Read through reviews of airlines operating flights from Ontario to Heidelberg, such as United Airlines and British Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,926 reviews

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,926 reviews
United Airlines
7.4
Good
8,926 reviews

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
British Airways
6.7
Okay
7,367 reviews
United Airlines
7.4
Good
8,926 reviews

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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.

  • How long is the flight from Ontario to Heidelberg?

    There are many flights that can get you from Ontario to Heidelberg in 16h 15m. Fly via Iberia or United Airlines to get the fastest option. There are 5757 mi between Ontario and Heidelberg. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 $1,091). 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$730Average$912FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$752Average$830FlexibilityNo cancel feeOn-time70%

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