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Prague

$389+ 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 9/14. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PRG
Jun 17 — Jun 241
Wed 6/17
Wed 6/24
1 adult, Economy
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Cheap 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 May 18, 2026.

This United Airlines deal was found by Cheapflights users on 5/13. 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 11/106:53 pm
ONT
-
PRG
2 stops18h 32m
United Airlines
Tue 11/243:10 pm
PRG
-
ONT
2 stops16h 56m
United Airlines
Deal found 5/13$730
This United Airlines deal was found by Cheapflights users on 5/14. 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 8/46:10 am
ONT
-
PRG
2 stops19h 40m
United Airlines
Fri 8/149:10 am
PRG
-
ONT
2 stops19h 47m
United Airlines
Deal found 5/14$761
This United Airlines deal was found by Cheapflights users on 5/15. 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 9/169:01 am
ONT
-
PRG
2 stops27h 19m
United Airlines
Wed 9/3012:30 pm
PRG
-
ONT
2 stops32h 42m
United Airlines
Deal found 5/15$767
This United Airlines deal was found by Cheapflights users on 5/16. 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.
Wed 10/141:18 pm
ONT
-
PRG
2 stops15h 12m
United Airlines
Wed 10/287:35 am
PRG
-
ONT
2 stops20h 45m
United Airlines
Deal found 5/16$773
This United Airlines deal was found by Cheapflights users on 5/13. 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 9/71:56 pm
ONT
-
PRG
2 stops18h 44m
United Airlines
Tue 9/2211:40 am
PRG
-
ONT
2 stops20h 18m
United Airlines
Deal found 5/13$774
This Delta deal was found by Cheapflights users on 5/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/296:00 am
ONT
-
PRG
2 stops26h 05m
Delta
Sun 1/102:30 pm
PRG
-
ONT
2 stops34h 42m
Delta
Deal found 5/16$778
This United Airlines deal was found by Cheapflights users on 5/15. 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 11/121:00 pm
ONT
-
PRG
2 stops18h 05m
United Airlines
Thu 11/2611:50 am
PRG
-
ONT
2 stops20h 16m
United Airlines
Deal found 5/15$780
This United Airlines deal was found by Cheapflights users on 5/15. 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 7/66:39 pm
ONT
-
PRG
2 stops17h 41m
United Airlines
Thu 8/132:30 pm
PRG
-
ONT
2 stops17h 29m
United Airlines
Deal found 5/15$791
This United Airlines deal was found by Cheapflights users on 5/17. 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.
Sun 11/17:00 am
ONT
-
PRG
2 stops19h 05m
United Airlines
Mon 11/93:10 pm
PRG
-
ONT
2 stops16h 56m
United Airlines
Deal found 5/17$792
This United Airlines deal was found by Cheapflights users on 5/15. 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 11/27:00 am
ONT
-
PRG
2 stops19h 05m
United Airlines
Sun 11/81:45 pm
PRG
-
ONT
2 stops18h 21m
United Airlines
Deal found 5/15$794
This United Airlines deal was found by Cheapflights users on 5/13. 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 8/101:50 pm
ONT
-
PRG
3 stops36h 00m
United Airlines
Sun 8/3012:30 pm
PRG
-
ONT
2 stops40h 27m
United Airlines
Deal found 5/13$798

Find 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 May 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$730
(United Airlines)

One-way from

$389
(United Airlines)

Popular in

June

Cheapest in

February

Average price

$822
Provider with most accurate pricing for Ontario-Václav Havel Prague flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Václav Havel Prague flights.
Search Deals
From Ontario to Václav Havel Prague
Search Deals
One-way flight from Ontario to Václav Havel Prague
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($223 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

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 May 18, 2026.
Use the filters below to find and compare flights from Ontario to Prague that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Wed 8/12

1:18 pm-4:05 pm

2 stops17h 47m

Václav Havel Prague

Wed 8/26

9:10 am-6:16 pm

2 stops18h 06m

$730

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Tue 11/10

6:53 pm-10:25 pm

2 stops18h 32m

Václav Havel Prague

Tue 11/24

3:10 pm-11:06 pm

2 stops16h 56m

$730

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Sun 9/13

7:00 am-10:50 am

2 stops18h 50m

Václav Havel Prague

Wed 9/30

2:35 pm-10:59 pm

2 stops17h 24m

$761

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Wed 10/21

11:20 am-4:05 pm

2 stops19h 45m

Václav Havel Prague

Wed 10/28

7:35 am-8:20 pm

2 stops20h 45m

$761

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Mon 7/6

6:39 pm-9:20 pm

2 stops17h 41m

Václav Havel Prague

Thu 8/13

2:30 pm-10:59 pm

2 stops17h 29m

$791

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Mon 8/10

1:50 pm-10:50 am

3 stops36h 00m

Václav Havel Prague

Sun 8/30

12:30 pm-7:57 pm

2 stops40h 27m

$798

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Wed 9/16

1:18 pm-5:30 pm

2 stops19h 12m

Václav Havel Prague

Wed 9/30

2:35 pm-10:59 pm

2 stops17h 24m

$804
Quickest round-trip

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Wed 9/2

1:18 pm-1:30 pm

2 stops15h 12m

Václav Havel Prague

Wed 11/4

7:35 am-5:47 pm

2 stops19h 12m

$825

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Mon 10/5

11:20 am-4:05 pm

2 stops19h 45m

Václav Havel Prague

Mon 10/19

2:20 pm-10:59 pm

2 stops17h 39m

$851

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Mon 11/2

12:46 pm-2:00 pm

2 stops16h 14m

Václav Havel Prague

Mon 1/18

11:00 am-10:01 pm

2 stops20h 01m

$1,071

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/14

Showing 1-10 of 21 resultsSorted by cheapest first
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2
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  • 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.

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 17h 47m. 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.

See more FAQs

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