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$511+ Cheap flights from Prague (PRG) to Ontario (ONT)

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 4/4. Fares are subject to change and may not be available on all flights or dates of travel.
PRG — ONT
Feb 5 — Feb 121
Thu 2/5
Thu 2/12
1 adult, Economy
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Cheap flight deals from Prague to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Prague (PRG) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 6, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$710
(Finnair)

One-way from

$511
(American Airlines)

Popular in

December

Cheapest in

February

Average price

$735
Provider with most accurate pricing for Václav Havel Prague-Los Angeles flight deals.
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Provider most trusted by Cheapflights users for Václav Havel Prague-Los Angeles flights.
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From Václav Havel Prague to Ontario
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One-way flight from Václav Havel Prague to Ontario
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Highest demand for flights based on searches. 4% potential increase in price ($33 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from Prague to Ontario

Cheapest flights from Prague to Ontario
Explore the most affordable flight options available from Prague to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 6, 2026.

This American Airlines deal was found by Cheapflights users on 1/5. 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 1/156:45 amPRG - ONT
2 stops21h 00mAmerican Airlines
Sun 1/187:16 amONT - PRG
2 stops25h 54mAmerican Airlines
Deal found 1/5$720
This United Airlines deal was found by Cheapflights users on 1/5. 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.
Sun 1/181:45 pmPRG - ONT
2 stops18h 08mUnited Airlines
Wed 1/215:05 amONT - PRG
2 stops26h 00mUnited Airlines
Deal found 1/5$781
This Iberia deal was found by Cheapflights users on 1/5. 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 2/23:40 pmPRG - ONT
2 stops27h 28mIberia
Tue 2/106:00 amONT - PRG
2 stops20h 45mIberia
Deal found 1/5$790
This Iberia deal was found by Cheapflights users on 1/5. 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 1/319:10 pmPRG - ONT
2 stops34h 38mIberia
Tue 2/107:16 amONT - PRG
2 stops19h 29mIberia
Deal found 1/5$792
This United Airlines deal was found by Cheapflights users on 1/5. 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 1/197:35 amPRG - ONT
2 stops19h 08mUnited Airlines
Thu 1/226:00 amONT - PRG
2 stops22h 05mUnited Airlines
Deal found 1/5$816
This United Airlines deal was found by Cheapflights users on 1/6. 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.
Fri 2/206:15 amPRG - ONT
2 stops39h 32mUnited Airlines
Fri 2/271:45 pmONT - PRG
2 stops17h 20mUnited Airlines
Deal found 1/6$826
This United Airlines deal was found by Cheapflights users on 1/5. 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.
Fri 1/307:35 amPRG - ONT
2 stops19h 08mUnited Airlines
Fri 2/201:45 pmONT - PRG
2 stops17h 20mUnited Airlines
Deal found 1/5$865
This United Airlines deal was found by Cheapflights users on 1/6. 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.
Sat 3/287:35 amPRG - ONT
2 stops21h 15mUnited Airlines
Sat 4/111:34 pmONT - PRG
2 stops14h 56mUnited Airlines
Deal found 1/6$1,395
This United Airlines deal was found by Cheapflights users on 1/5. 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.
Thu 4/91:25 pmPRG - ONT
2 stops18h 01mUnited Airlines
Mon 4/271:34 pmONT - PRG
2 stops17h 31mUnited Airlines
Deal found 1/5$4,081
This United Airlines deal was found by Cheapflights users on 1/5. 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.
Thu 4/99:10 amPRG - ONT
2 stops20h 26mUnited Airlines
Sun 4/261:34 pmONT - PRG
2 stops15h 06mUnited Airlines
Deal found 1/5$4,112

Cheapflights Fare Finder

 
Customize your flight search to find flights from Prague to Ontario 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 January 6, 2026.
Use the filters below to find and compare flights from Prague to Ontario that are best for you.

Fly from

Prague

Fly to

Ontario

Route

Depart

Return

Price

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Sun 1/18

1:45 pm-10:53 pm

2 stops18h 08m

Ontario

Wed 1/21

5:05 am-4:05 pm

2 stops26h 00m

$781

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Mon 2/2

3:40 pm-10:08 am

2 stops27h 28m

Ontario

Tue 2/10

6:00 am-11:45 am

2 stops20h 45m

$790

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Sat 1/31

9:10 pm-10:48 pm

2 stops34h 38m

Ontario

Tue 2/10

7:16 am-11:45 am

2 stops19h 29m

$792

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Mon 1/19

7:35 am-5:43 pm

2 stops19h 08m

Ontario

Thu 1/22

6:00 am-1:05 pm

2 stops22h 05m

$816

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Fri 2/20

6:15 am-12:47 pm

2 stops39h 32m

Ontario

Fri 2/27

1:45 pm-4:05 pm

2 stops17h 20m

$826

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Fri 1/30

7:35 am-5:43 pm

2 stops19h 08m

Ontario

Fri 2/20

1:45 pm-4:05 pm

2 stops17h 20m

$865

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Sat 3/28

7:35 am-8:50 pm

2 stops21h 15m

Ontario

Sat 4/11

1:34 pm-1:30 pm

2 stops14h 56m

$1,395

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Thu 4/9

1:25 pm-10:26 pm

2 stops18h 01m

Ontario

Mon 4/27

1:34 pm-4:05 pm

2 stops17h 31m

$4,081

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Thu 4/9

9:10 am-8:36 pm

2 stops20h 26m

Ontario

Sun 4/26

1:34 pm-1:40 pm

2 stops15h 06m

$4,112

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Sat 4/4

7:20 am-11:59 pm

2 stops25h 39m

$511

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/6

Showing 1-10 of 21 results
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Best time to book a flight from Prague to Ontario

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

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

Currently, May is the cheapest month in which you can book a flight from Prague to Ontario (average of $489). Flying from Prague to Ontario in July is currently the most expensive (average of $705). 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.

Related info for your journey

Find useful and relevant information for your journey from Prague to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Prague to Ontario?

    For as low as $781, United Airlines can have you in Ontario from Prague in 18h 08m. The distance between Prague and Ontario is about 5917 mi. 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 Prague to Ontario that include hotel bookings?

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

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

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

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

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

    Currently, May is the cheapest month in which you can book a flight from Prague to Ontario (average of $489). Flying from Prague to Ontario in July is currently the most expensive (average of $705). 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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