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$345+ 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 7/28. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PRG
Apr 20 — Apr 271
Mon 4/20
Mon 4/27
1 adult, Economy
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Cheap 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 March 21, 2026.

This United Airlines deal was found by Cheapflights users on 3/20. 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 5/47:00 am
ONT
-
PRG
2 stops16h 55m
United Airlines
Wed 5/132:35 pm
PRG
-
ONT
2 stops17h 24m
United Airlines
Deal found 3/20$678
This United Airlines deal was found by Cheapflights users on 3/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/61:18 pm
ONT
-
PRG
2 stops23h 02m
United Airlines
Wed 9/2312:30 pm
PRG
-
ONT
2 stops38h 17m
United Airlines
Deal found 3/16$686
This United Airlines deal was found by Cheapflights users on 3/19. 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 4/201:27 pm
ONT
-
PRG
2 stops19h 13m
United Airlines
Tue 4/2811:40 am
PRG
-
ONT
2 stops19h 10m
United Airlines
Deal found 3/19$690
This United Airlines deal was found by Cheapflights users on 3/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/67:00 am
ONT
-
PRG
2 stops16h 55m
United Airlines
Tue 9/2211:40 am
PRG
-
ONT
2 stops20h 18m
United Airlines
Deal found 3/16$709
This United Airlines deal was found by Cheapflights users on 3/17. 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.
Mon 9/71:44 pm
ONT
-
PRG
2 stops18h 56m
United Airlines
Tue 9/226:10 am
PRG
-
ONT
2 stops21h 09m
United Airlines
Deal found 3/17$720
This Delta deal was found by Cheapflights users on 3/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/39:55 am
ONT
-
PRG
2 stops16h 45m
Delta
Tue 11/106:00 am
PRG
-
ONT
2 stops19h 12m
Delta
Deal found 3/20$726
This United Airlines deal was found by Cheapflights users on 3/17. 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 10/147:00 am
ONT
-
PRG
2 stops16h 55m
United Airlines
Tue 10/277:35 am
PRG
-
ONT
2 stops18h 12m
United Airlines
Deal found 3/17$733
This United Airlines deal was found by Cheapflights users on 3/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/166:59 pm
ONT
-
PRG
2 stops32h 46m
United Airlines
Tue 6/26:10 am
PRG
-
ONT
2 stops25h 27m
United Airlines
Deal found 3/16$739
This United Airlines deal was found by Cheapflights users on 3/21. 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 4/201:27 pm
ONT
-
PRG
2 stops19h 13m
United Airlines
Mon 4/276:00 am
PRG
-
ONT
2 stops23h 36m
United Airlines
Deal found 3/21$740
This United Airlines deal was found by Cheapflights users on 3/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/121:30 pm
ONT
-
PRG
2 stops19h 20m
United Airlines
Wed 5/202:35 pm
PRG
-
ONT
2 stops41h 11m
United Airlines
Deal found 3/16$741

Find 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 March 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$678
(United Airlines)

One-way from

$345
(oojo)

Popular in

June

Cheapest in

February

Average price

$651
Provider with most accurate pricing for Los Angeles Los Angeles-Václav Havel Prague flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles 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. 19% potential increase in price ($166 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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 March 21, 2026.
Use the filters below to find and compare flights from Ontario to the Czech Republic that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Sun 9/6

1:18 pm-9:20 pm

2 stops23h 02m

Václav Havel Prague

Wed 9/23

12:30 pm-5:47 pm

2 stops38h 17m

$686

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Mon 4/20

1:27 pm-5:40 pm

2 stops19h 13m

Václav Havel Prague

Tue 4/28

11:40 am-9:50 pm

2 stops19h 10m

$690

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Mon 9/7

1:44 pm-5:40 pm

2 stops18h 56m

Václav Havel Prague

Wed 9/23

2:35 pm-10:58 pm

2 stops17h 23m

$721

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Wed 5/6

1:40 pm-4:05 pm

2 stops17h 25m

Václav Havel Prague

Mon 5/11

11:30 am-10:59 pm

2 stops20h 29m

$728

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Sat 5/16

6:59 pm-12:45 pm

2 stops32h 46m

Václav Havel Prague

Tue 5/26

9:10 am-12:12 pm

2 stops36h 02m

$739

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Sat 5/9

6:59 pm-1:40 pm

2 stops33h 41m

Václav Havel Prague

Sat 5/23

6:00 am-10:50 pm

2 stops25h 50m

$781

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Fri 9/4

8:00 am-5:50 pm

2 stops24h 50m

Václav Havel Prague

Wed 9/23

12:30 pm-5:47 pm

2 stops38h 17m

$797

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Sun 4/19

1:27 pm-5:55 pm

2 stops19h 28m

Václav Havel Prague

Sun 5/3

9:10 am-10:35 pm

2 stops22h 25m

$872

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Mon 5/25

6:39 pm-9:20 pm

2 stops17h 41m

Václav Havel Prague

Wed 6/3

6:15 am-5:28 pm

2 stops20h 13m

$884

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Sun 5/17

10:37 am-12:45 pm

2 stops17h 08m

Václav Havel Prague

Fri 5/29

9:10 am-10:46 pm

2 stops22h 36m

$946

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/20

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 $734). 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 $686, United Airlines can have you in Czech Republic from Ontario in 23h 02m. 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 $734). 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

Browse thousands of different options on Cheapflights for your next trip

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