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Heidelberg

$492+ 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 3/30. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FRA
Mar 19 — Mar 261
Wed 3/19
Wed 3/26
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 March 14, 2025.

Round-trip from

$745
(Booking.com)

One-way from

$492
(United Airlines)

Popular in

July

Cheapest in

September

Average price

$829
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. 9% potential increase in price ($94 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 14, 2025.

This Finnair deal was found by Cheapflights users on 3/12. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/116:38 amONT - FRA
1 stop15h 37mMultiple Airlines
Mon 11/1710:50 amFRA - ONT
1 stop15h 59mMultiple Airlines
Deal found 3/12$737
This United Airlines deal was found by Cheapflights users on 3/12. 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 11/1210:40 amONT - FRA
1 stop13h 55mUnited Airlines
Wed 11/191:10 pmFRA - ONT
1 stop16h 07mUnited Airlines
Deal found 3/12$747
This AirNGo deal was found by Cheapflights users on 3/13. 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.
Fri 5/210:15 pmONT - FRA
1 stop25h 40mKLM
Fri 5/1610:40 amFRA - ONT
1 stop17h 49mKLM
Deal found 3/13$758
This Delta deal was found by Cheapflights users on 3/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1110:59 pmONT - FRA
1 stop24h 41mDelta
Mon 11/177:05 amFRA - ONT
2 stops18h 12mDelta
Deal found 3/12$765
This British Airways deal was found by Cheapflights users on 3/13. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/237:00 amONT - FRA
1 stop16h 15mBritish Airways
Mon 3/316:35 amFRA - ONT
2 stops20h 58mBritish Airways
Deal found 3/13$770
This American Airlines deal was found by Cheapflights users on 3/13. 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.
Mon 5/511:59 pmONT - FRA
1 stop23h 46mAmerican Airlines
Mon 5/1910:55 amFRA - ONT
1 stop33h 55mAmerican Airlines
Deal found 3/13$809
This Iberia deal was found by Cheapflights users on 3/13. 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.
Mon 5/57:30 amONT - FRA
1 stop16h 15mIberia
Mon 5/1910:55 amFRA - ONT
1 stop21h 48mIberia
Deal found 3/13$816

Find flights from Ontario to Heidelberg within your budget

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 March 14, 2025.

Fly from

Ontario

Fly to

Heidelberg

Route

Depart

Return

Price

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Tue 4/1

5:00 am-6:30 am

2 stops40h 30m

Frankfurt am Main

Tue 4/8

10:00 am-9:58 pm

1 stop20h 58m

$745

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Tue 4/1

7:00 am-8:45 am

1 stop16h 45m

Frankfurt am Main

Tue 4/8

10:55 am-11:50 pm

1 stop21h 55m

$747

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Tue 4/1

7:00 am-8:45 am

1 stop16h 45m

Frankfurt am Main

Mon 4/7

10:55 am-6:29 pm

1 stop16h 34m

$748

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Tue 4/1

7:05 am-9:45 am

2 stops17h 40m

Frankfurt am Main

Tue 4/8

8:50 am-8:21 pm

2 stops20h 31m

$752

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Fri 5/2

10:15 pm-8:55 am

1 stop25h 40m

Frankfurt am Main

Fri 5/16

10:40 am-7:29 pm

1 stop17h 49m

$758

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Tue 4/1

7:00 am-8:55 am

1 stop16h 55m

Frankfurt am Main

Thu 4/17

10:40 am-7:28 pm

1 stop17h 48m

$782

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Mon 5/5

11:59 pm-8:45 am

1 stop23h 46m

Frankfurt am Main

Mon 5/19

10:55 am-11:50 am

1 stop33h 55m

$809

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Mon 6/2

6:32 pm-7:10 am

3 stops27h 38m

Frankfurt am Main

Tue 1/6

5:10 pm-8:17 pm

3 stops36h 07m

$1,894

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Tue 7/29

7:00 am-12:45 pm

2 stops20h 45m

Frankfurt am Main

Thu 8/14

12:25 pm-10:41 pm

2 stops19h 16m

$2,125

OntarioFrankfurt am Main

ONT - FRA

ONTFRA

Ontario

Sun 3/30

6:05 am-8:15 am

1 stop17h 10m

$492

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/14

Showing 1-10 of 19 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.

Travel insights for flights from Ontario to Heidelberg

Get recent, data-driven insights about flights from Ontario to Heidelberg including ideal travel times, pricing trends, and more.

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 $1,089). 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 March 14, 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.

Rainfall in Heidelberg by month

Plan your trip to Heidelberg by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Heidelberg ranges from 1.6 - 2.8 inches per month. June is typically the wettest month, when rainfall can reach 2.8 in. January is typically the driest time to visit Heidelberg when rainfall is around 1.6 in.

Temperature in Heidelberg by month

Plan your trip to Heidelberg by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Heidelberg, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 64.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

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 March 14, 2025.
See what other customers who have flown with China Airlines, Delta and KLM from Ontario to Heidelberg have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
China Airlines
8.2
Very good
723 reviews

Boarding

8.3

Entertainment

8.0

Food

7.8

Comfort

8.0

Overall

8.2

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence

China Airlines
8.2
Very good
723 reviews
China Airlines
8.2
Very good
723 reviews

Boarding

8.3

Entertainment

8.0

Food

7.8

Comfort

8.0

Overall

8.2

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence

Delta
8.0
Very good
7,944 reviews
China Airlines
8.2
Very good
723 reviews

Boarding

8.3

Entertainment

8.0

Food

7.8

Comfort

8.0

Overall

8.2

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence

KLM
7.8
Good
1,320 reviews
China Airlines
8.2
Very good
723 reviews

Boarding

8.3

Entertainment

8.0

Food

7.8

Comfort

8.0

Overall

8.2

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence

United Airlines
7.4
Good
8,623 reviews
China Airlines
8.2
Very good
723 reviews

Boarding

8.3

Entertainment

8.0

Food

7.8

Comfort

8.0

Overall

8.2

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence

American Airlines
7.2
Good
10,000 reviews
China Airlines
8.2
Very good
723 reviews

Boarding

8.3

Entertainment

8.0

Food

7.8

Comfort

8.0

Overall

8.2

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence

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 United Airlines, with whom users have recently found tickets for as low as $492. However, be on the lookout for offers from KLM and Delta, 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 $1,089). 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 March 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$745Average$898FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$751Average$830FlexibilityNo cancel feeOn-time70%
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