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$436+ Cheap flights from Ontario (ONT) to the Czech Republic

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 21 — Nov 281
Fri 11/21
Fri 11/28
1 adult, Economy
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Find flight deals from Ontario to Czech Republic

Cheapest flights from Ontario to Czech Republic
Explore the most affordable flight options available from Ontario to Czech Republic. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 22, 2025.

This United Airlines deal was found by Cheapflights users on 10/20. 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
2 stops24h 14mUnited Airlines
Deal found 10/20$555
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 10/22. 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 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
Tue 12/96:15 amPRG - ONT
2 stops23h 27mMultiple Airlines
Deal found 10/22$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 10/20. 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 11/101:29 pmONT - PRG
2 stops17h 36mUnited Airlines
Mon 11/2411:50 amPRG - ONT
2 stops20h 01mUnited Airlines
Deal found 10/20$655
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.
Wed 12/311:40 pmONT - PRG
2 stops17h 25mUnited Airlines
Thu 1/81:45 pmPRG - ONT
2 stops18h 08mUnited Airlines
Deal found 10/21$664
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.
Wed 11/261:29 pmONT - PRG
2 stops15h 36mUnited Airlines
Mon 12/81:45 pmPRG - ONT
2 stops18h 04mUnited Airlines
Deal found 10/22$669
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.
Wed 12/101:34 pmONT - PRG
2 stops15h 31mUnited Airlines
Tue 12/161:45 pmPRG - ONT
2 stops18h 04mUnited Airlines
Deal found 10/21$670
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.
Mon 12/2910:42 amONT - PRG
2 stops17h 23mUnited Airlines
Fri 1/93:15 pmPRG - ONT
2 stops16h 38mUnited Airlines
Deal found 10/21$725

Cheap flight deals from Ontario to Czech Republic

Keep the following information in mind while searching for Ontario to Czech Republic flight deals. Data was last updated October 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$555
(United Airlines)

One-way from

$436
(Mytrip)

Popular in

June

Cheapest in

November

Average price

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

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Czech Republic 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 22, 2025.
Use the filters below to find and compare flights from Ontario to the Czech Republic that are best for you.

Fly from

Ontario

Fly to

Czech Republic

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

2 stops24h 14m

$555

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

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

Tue 11/11

6:38 pm-10:25 pm

2 stops18h 47m

Václav Havel Prague

Tue 11/25

11:50 am-10:51 pm

2 stops20h 01m

$605

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Tue 3/10

1:45 pm-4:05 pm

2 stops18h 20m

Václav Havel Prague

Thu 3/19

7:35 am-8:45 pm

2 stops21h 10m

$606

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Wed 4/1

4:15 pm-4:00 pm

2 stops14h 45m

Václav Havel Prague

Thu 4/16

10:25 am-10:26 pm

2 stops21h 01m

$606

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

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/21

Showing 1-10 of 20 results
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Best time to book a flight from Ontario to Czech Republic

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

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

Currently, November is the cheapest month in which you can book a flight from Ontario to Czech Republic (average of $424). Flying from Ontario to Czech Republic 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 Czech Republic. 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 Czech Republic?

    Ontario (ONT) is the airport you will fly out of if you book a flight from Ontario to Czech Republic. It is only a 3.1 mi journey to Ontario (ONT) from Ontario’s city center.

  • How long is the flight from Ontario to Czech Republic?

    For as low as $555, United Airlines can have you in Czech Republic from Ontario in 30h 25m. Ontario and Czech Republic are separated by a distance of 5917 mi.

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

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

  • How can I find direct flights from Ontario to Czech Republic?

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

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

    Yes. Cheapflights offers flight deals from Ontario to Czech Republic 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 Czech Republic?

    Currently, November is the cheapest month in which you can book a flight from Ontario to Czech Republic (average of $424). Flying from Ontario to Czech Republic 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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