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$436+ Cheap flights from Ontario (ONT) to Prague (PRG)

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 1/17. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PRG
Nov 22 — Nov 291
Sat 11/22
Sat 11/29
1 adult, Economy
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Find cheap flights from Ontario to Prague with Cheapflights

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Cheap flight deals from Ontario to Prague

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Prague (PRG). 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 October 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$554
(United Airlines)

One-way from

$436
(Mytrip)

Popular in

June

Cheapest in

November

Average price

$641
Provider with most accurate pricing for Ontario-Václav Havel Prague flight deals.
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Provider most trusted by Cheapflights users for Ontario-Václav Havel Prague flights.
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From Ontario to Václav Havel Prague
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One-way flight from Ontario to Václav Havel Prague
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Highest demand for flights based on searches. 14% potential increase in price ($127 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Ontario to Prague

Cheapest flights from Ontario to Prague
Explore the most affordable flight options available from Ontario to Prague. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 23, 2025.

This United Airlines deal was found by Cheapflights users on 10/23. 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 11/277:00 amONT - PRG
2 stops30h 25mUnited Airlines
Fri 12/57:35 amPRG - ONT
3 stops24h 14mUnited Airlines
Deal found 10/23$554
This United Airlines deal was found by Cheapflights users on 10/21. 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 12/56:00 amONT - PRG
2 stops31h 25mUnited Airlines
Fri 12/127:35 amPRG - ONT
3 stops24h 14mUnited Airlines
Deal found 10/21$555
This Delta deal was found by Cheapflights users on 10/22. 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.
Thu 12/46:00 amONT - PRG
2 stops20h 40mDelta
Fri 12/126:00 amPRG - ONT
2 stops26h 58mDelta
Deal found 10/22$556
This United Airlines deal was found by Cheapflights users on 10/22. 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 12/46:00 amONT - PRG
2 stops31h 25mUnited Airlines
Fri 12/126:50 amPRG - ONT
3 stops24h 59mUnited Airlines
Deal found 10/22$558
This United deal was found by Cheapflights users on 10/21. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/277:00 amONT - PRG
2 stops17h 35mMultiple Airlines
Fri 12/57:35 amPRG - ONT
2 stops24h 14mMultiple Airlines
Deal found 10/21$568
This United deal was found by Cheapflights users on 10/23. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/277:00 amONT - PRG
2 stops17h 35mMultiple Airlines
Sat 12/66:15 amPRG - ONT
2 stops25h 34mMultiple Airlines
Deal found 10/23$569
This United deal was found by Cheapflights users on 10/21. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/277:00 amONT - PRG
2 stops17h 35mMultiple Airlines
Sun 12/73:00 pmPRG - ONT
2 stops38h 42mMultiple Airlines
Deal found 10/21$587
This United Airlines deal was found by Cheapflights users on 10/21. 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.
Tue 11/116:38 pmONT - PRG
2 stops18h 47mUnited Airlines
Tue 11/2511:50 amPRG - ONT
2 stops20h 01mUnited Airlines
Deal found 10/21$605
This United Airlines deal was found by Cheapflights users on 10/23. 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 12/3110:42 amONT - PRG
2 stops17h 23mUnited Airlines
Sun 1/113:00 pmPRG - ONT
2 stops16h 53mUnited Airlines
Deal found 10/23$631
This United Airlines deal was found by Cheapflights users on 10/22. 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 12/66:41 pmONT - PRG
2 stops18h 44mUnited Airlines
Sat 12/133:10 pmPRG - ONT
3 stops40h 39mUnited Airlines
Deal found 10/22$649

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Prague 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 October 23, 2025.
Use the filters below to find and compare flights from Ontario to Prague that are best for you.

Fly from

Ontario

Fly to

Prague

Route

Depart

Return

Price

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Thu 11/27

7:00 am-10:25 pm

2 stops30h 25m

Václav Havel Prague

Fri 12/5

7:35 am-10:49 pm

3 stops24h 14m

$554

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Sat 1/24

5:05 am-1:05 pm

2 stops23h 00m

Václav Havel Prague

Sat 2/7

3:10 pm-10:53 pm

2 stops16h 43m

$556

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Thu 11/27

7:00 am-9:35 am

2 stops17h 35m

Václav Havel Prague

Fri 12/5

7:35 am-10:49 pm

3 stops24h 14m

$568

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Thu 11/27

7:00 am-9:35 am

2 stops17h 35m

Václav Havel Prague

Sat 12/6

6:15 am-10:49 pm

2 stops25h 34m

$569

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Thu 11/27

7:00 am-9:35 am

2 stops17h 35m

Václav Havel Prague

Tue 12/9

6:15 am-8:42 pm

2 stops23h 27m

$569

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Wed 12/10

1:34 pm-2:05 pm

2 stops15h 31m

Václav Havel Prague

Tue 12/16

1:45 pm-10:49 pm

2 stops18h 04m

$569

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Thu 11/27

7:00 am-9:35 am

2 stops17h 35m

Václav Havel Prague

Sun 12/7

3:00 pm-8:42 pm

2 stops38h 42m

$587

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Sat 1/17

4:49 pm-7:50 pm

2 stops18h 01m

$436

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Thu 11/27

7:00 am-10:25 pm

2 stops30h 25m

$449

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Thu 12/11

5:05 am-10:25 pm

2 stops32h 20m

$449

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/21

Showing 1-10 of 17 results
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Compare providers for flights from Ontario to Prague

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Prague in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Prague flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Prague flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Prague flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Prague flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Prague flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Prague

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

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

Currently, November is the cheapest month in which you can book a flight from Ontario to Prague (average of $424). Flying from Ontario to Prague in June is currently the most expensive (average of $712). 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 Ontario to Prague. 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 Ontario to Prague?

    Departing from Ontario to Prague will take you 30h 25m. The distance between Ontario and Prague is about 5917 mi.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Ontario to Prague (average of $424). Flying from Ontario to Prague in June is currently the most expensive (average of $712). 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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