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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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PRG
Aug 15 — Aug 221
Sat 8/15
Sat 8/22
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 July 16, 2026.

This Delta deal was found by Cheapflights users on 7/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/15:04 pm
ONT
-
PRG
2 stops39h 31m
Delta
Fri 11/206:00 am
PRG
-
ONT
2 stops39h 30m
Delta
Deal found 7/13$730
This Air Canada deal was found by Cheapflights users on 7/16. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/121:56 pm
ONT
-
PRG
2 stops35h 54m
Air Canada
Wed 9/3012:30 pm
PRG
-
ONT
2 stops32h 48m
Air Canada
Deal found 7/16$737
This Delta deal was found by Cheapflights users on 7/14. 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 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
Wed 1/611:35 am
PRG
-
ONT
2 stops45h 13m
Delta
Deal found 7/14$746
This Delta deal was found by Cheapflights users on 7/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/275:05 pm
ONT
-
PRG
2 stops35h 40m
Delta
Thu 1/72:30 pm
PRG
-
ONT
2 stops42h 18m
Delta
Deal found 7/14$751
This United Airlines deal was found by Cheapflights users on 7/16. 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 9/139:01 am
ONT
-
PRG
2 stops18h 39m
United Airlines
Thu 10/16:15 am
PRG
-
ONT
2 stops25h 44m
United Airlines
Deal found 7/16$759
This Delta deal was found by Cheapflights users on 7/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/131:04 pm
ONT
-
PRG
2 stops19h 36m
Delta
Mon 9/282:30 pm
PRG
-
ONT
2 stops35h 05m
Delta
Deal found 7/15$760
This United Airlines deal was found by Cheapflights users on 7/16. 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 9/151:56 pm
ONT
-
PRG
2 stops22h 24m
United Airlines
Wed 9/3012:30 pm
PRG
-
ONT
2 stops43h 19m
United Airlines
Deal found 7/16$766
This Air Canada deal was found by Cheapflights users on 7/16. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/146:08 am
ONT
-
PRG
2 stops43h 42m
Air Canada
Wed 9/3012:30 pm
PRG
-
ONT
2 stops32h 48m
Air Canada
Deal found 7/16$767
This United Airlines deal was found by Cheapflights users on 7/16. 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 9/121:56 pm
ONT
-
PRG
2 stops42h 59m
United Airlines
Fri 10/22:30 pm
PRG
-
ONT
2 stops17h 29m
United Airlines
Deal found 7/16$770
This Delta deal was found by Cheapflights users on 7/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/275:05 pm
ONT
-
PRG
2 stops35h 40m
Delta
Mon 1/116:00 am
PRG
-
ONT
2 stops25h 43m
Delta
Deal found 7/14$771
This Air Canada deal was found by Cheapflights users on 7/16. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/187:13 pm
ONT
-
PRG
2 stops54h 37m
Air Canada
Wed 9/3012:30 pm
PRG
-
ONT
2 stops43h 29m
Air Canada
Deal found 7/16$772
This Delta deal was found by Cheapflights users on 7/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:00 am
ONT
-
PRG
2 stops26h 05m
Delta
Sat 11/212:30 pm
PRG
-
ONT
2 stops34h 42m
Delta
Deal found 7/13$776

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 July 16, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$727
(United Airlines)

One-way from

$389
(United Airlines)

Popular in

June

Cheapest in

February

Average price

$881
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 ($233 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 16, 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

Tue 11/3

5:04 pm-8:25 am

2 stops54h 21m

Václav Havel Prague

Fri 11/20

6:00 am-12:30 pm

2 stops39h 30m

$730

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Sat 9/12

1:18 pm-4:00 pm

2 stops41h 42m

Václav Havel Prague

Thu 10/1

9:35 am-8:58 pm

2 stops20h 23m

$759
Quickest round-trip

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Sun 12/27

11:20 am-2:00 pm

2 stops17h 40m

Václav Havel Prague

Fri 1/8

2:50 pm-11:06 pm

2 stops17h 16m

$770

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Sat 11/7

1:17 pm-5:35 pm

2 stops43h 18m

Václav Havel Prague

Sat 11/21

11:35 am-10:43 pm

2 stops44h 08m

$780

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Sat 9/12

1:56 pm-5:55 pm

2 stops42h 59m

Václav Havel Prague

Mon 9/28

2:20 pm-5:41 pm

2 stops36h 21m

$790

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Sat 9/12

1:56 pm-10:50 am

2 stops35h 54m

Václav Havel Prague

Sat 10/3

12:30 pm-12:18 pm

2 stops32h 48m

$797

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Thu 9/10

1:18 pm-4:00 pm

2 stops17h 42m

Václav Havel Prague

Tue 9/22

9:10 am-8:53 pm

2 stops20h 43m

$808

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Thu 9/10

9:01 am-12:40 pm

2 stops18h 39m

Václav Havel Prague

Thu 9/17

2:30 pm-10:51 pm

2 stops17h 21m

$809

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Tue 11/10

9:00 am-10:25 pm

2 stops28h 25m

Václav Havel Prague

Fri 11/13

7:15 am-8:06 pm

2 stops21h 51m

$832

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Thu 9/17

1:53 pm-9:20 pm

2 stops22h 27m

Václav Havel Prague

Tue 9/29

6:15 am-5:41 pm

2 stops20h 26m

$849

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/14

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 41h 42m. The distance between Ontario and Prague is about 5917 mi. This flight may include one or multiple stops.

  • 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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