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$371+ 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 8/16. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PRG
May 28 — Jun 41
Thu 5/28
Thu 6/4
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 April 28, 2026.

This United Airlines deal was found by Cheapflights users on 4/24. 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 8/96:30 am
ONT
-
PRG
2 stops19h 20m
United Airlines
Wed 8/192:35 pm
PRG
-
ONT
2 stops17h 23m
United Airlines
Deal found 4/24$730
This United Airlines deal was found by Cheapflights users on 4/27. 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 11/181:00 pm
ONT
-
PRG
2 stops16h 20m
United Airlines
Fri 12/43:10 pm
PRG
-
ONT
2 stops16h 56m
United Airlines
Deal found 4/27$742
This United Airlines deal was found by Cheapflights users on 4/24. 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 8/121:18 pm
ONT
-
PRG
2 stops17h 47m
United Airlines
Sun 8/2312:30 pm
PRG
-
ONT
2 stops38h 49m
United Airlines
Deal found 4/24$758
This United Airlines deal was found by Cheapflights users on 4/25. 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 9/235:00 am
ONT
-
PRG
2 stops31h 20m
United Airlines
Wed 10/712:30 pm
PRG
-
ONT
2 stops32h 42m
United Airlines
Deal found 4/25$767
This United Airlines deal was found by Cheapflights users on 4/27. 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 8/91:50 pm
ONT
-
PRG
2 stops19h 05m
United Airlines
Tue 8/186:10 am
PRG
-
ONT
2 stops21h 09m
United Airlines
Deal found 4/27$773
This United Airlines deal was found by Cheapflights users on 4/25. 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 10/261:00 pm
ONT
-
PRG
2 stops19h 05m
United Airlines
Mon 11/910:25 am
PRG
-
ONT
2 stops18h 55m
United Airlines
Deal found 4/25$780
This United Airlines deal was found by Cheapflights users on 4/26. 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 11/165:00 am
ONT
-
PRG
2 stops23h 05m
United Airlines
Thu 11/197:35 am
PRG
-
ONT
2 stops23h 51m
United Airlines
Deal found 4/26$835
This United Airlines deal was found by Cheapflights users on 4/23. 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.
Sat 10/2411:20 am
ONT
-
PRG
2 stops19h 00m
United Airlines
Sat 11/77:35 am
PRG
-
ONT
2 stops19h 12m
United Airlines
Deal found 4/23$842
This United Airlines deal was found by Cheapflights users on 4/24. 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 8/121:44 pm
ONT
-
PRG
2 stops18h 46m
United Airlines
Sat 8/222:40 pm
PRG
-
ONT
2 stops17h 18m
United Airlines
Deal found 4/24$845
This Delta deal was found by Cheapflights users on 4/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/12:00 pm
ONT
-
PRG
2 stops22h 45m
Delta
Thu 10/86:00 am
PRG
-
ONT
2 stops25h 43m
Delta
Deal found 4/23$848
This United Airlines deal was found by Cheapflights users on 4/23. 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 10/111:20 am
ONT
-
PRG
2 stops25h 00m
United Airlines
Thu 10/86:00 am
PRG
-
ONT
2 stops24h 58m
United Airlines
Deal found 4/23$851

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 April 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$730
(United Airlines)

One-way from

$371
(oojo)

Popular in

June

Cheapest in

February

Average price

$647
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. 22% potential increase in price ($196 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 28, 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
Quickest round-trip

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Wed 8/19

1:18 pm-1:30 pm

2 stops15h 12m

Václav Havel Prague

Wed 8/26

2:35 pm-10:58 pm

2 stops17h 23m

$742

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Sun 8/9

1:50 pm-5:55 pm

2 stops19h 05m

Václav Havel Prague

Tue 8/18

6:10 am-6:19 pm

2 stops21h 09m

$773

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Wed 8/12

9:01 am-1:30 pm

2 stops19h 29m

Václav Havel Prague

Sun 8/23

2:10 pm-10:58 pm

2 stops17h 48m

$792

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Thu 8/13

1:18 pm-1:40 pm

2 stops15h 22m

Václav Havel Prague

Mon 8/24

9:05 am-6:11 pm

2 stops18h 06m

$842

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Thu 10/1

2:00 pm-9:45 pm

2 stops22h 45m

Václav Havel Prague

Thu 10/8

6:00 am-10:43 pm

2 stops25h 43m

$848

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Wed 7/29

1:50 pm-5:30 pm

2 stops18h 40m

Václav Havel Prague

Wed 8/12

9:10 am-8:52 pm

2 stops20h 42m

$907

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Wed 7/15

6:00 am-1:30 pm

2 stops22h 30m

Václav Havel Prague

Wed 7/22

12:30 pm-10:51 pm

2 stops43h 21m

$925

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Wed 7/22

6:30 am-10:50 am

2 stops19h 20m

Václav Havel Prague

Wed 7/29

9:10 am-8:42 pm

2 stops20h 32m

$950

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Thu 9/3

1:44 pm-5:45 pm

2 stops19h 01m

Václav Havel Prague

Wed 9/9

9:10 am-8:04 pm

2 stops19h 54m

$961

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Tue 5/26

1:50 pm-5:50 pm

2 stops19h 00m

Václav Havel Prague

Tue 6/9

6:10 am-5:56 pm

2 stops20h 46m

$1,032

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

Showing 1-10 of 22 resultsSorted by cheapest first
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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
No data available for this route at this time. Please check back soon.

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 $742, United Airlines can have you in Czech Republic from Ontario in 15h 12m. 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.

See more FAQs

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