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Prague

$390+ 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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PRG
Jul 18 — Jul 251
Sat 7/18
Sat 7/25
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 June 18, 2026.

This United Airlines deal was found by Cheapflights users on 6/18. 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 10/207:00 am
ONT
-
PRG
2 stops18h 50m
United Airlines
Tue 11/311:30 am
PRG
-
ONT
2 stops20h 36m
United Airlines
Deal found 6/18$730
This United Airlines deal was found by Cheapflights users on 6/16. 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 9/26:08 am
ONT
-
PRG
2 stops26h 22m
United Airlines
Wed 9/1612:30 pm
PRG
-
ONT
2 stops33h 20m
United Airlines
Deal found 6/16$749
This United Airlines deal was found by Cheapflights users on 6/17. 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 8/247:00 am
ONT
-
PRG
2 stops16h 55m
United Airlines
Tue 9/89:10 am
PRG
-
ONT
2 stops19h 47m
United Airlines
Deal found 6/17$760
This United Airlines deal was found by Cheapflights users on 6/17. 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 8/237:00 am
ONT
-
PRG
2 stops18h 50m
United Airlines
Tue 9/19:10 am
PRG
-
ONT
2 stops20h 43m
United Airlines
Deal found 6/17$761
This United Airlines deal was found by Cheapflights users on 6/16. 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 11/245:00 am
ONT
-
PRG
2 stops23h 05m
United Airlines
Mon 11/301:45 pm
PRG
-
ONT
2 stops55h 35m
United Airlines
Deal found 6/16$771
This United Airlines deal was found by Cheapflights users on 6/14. 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.
Fri 8/76:10 am
ONT
-
PRG
2 stops19h 40m
United Airlines
Fri 8/219:10 am
PRG
-
ONT
2 stops19h 51m
United Airlines
Deal found 6/14$779
This United Airlines deal was found by Cheapflights users on 6/16. 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 8/96:10 am
ONT
-
PRG
2 stops19h 40m
United Airlines
Sun 8/232:10 pm
PRG
-
ONT
2 stops17h 49m
United Airlines
Deal found 6/16$780
This United Airlines deal was found by Cheapflights users on 6/15. 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.
Sun 8/307:00 am
ONT
-
PRG
2 stops18h 50m
United Airlines
Tue 9/89:10 am
PRG
-
ONT
2 stops19h 51m
United Airlines
Deal found 6/15$790
This United Airlines deal was found by Cheapflights users on 6/16. 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 9/267:00 am
ONT
-
PRG
2 stops42h 50m
United Airlines
Fri 10/911:45 am
PRG
-
ONT
2 stops20h 14m
United Airlines
Deal found 6/16$791
This United Airlines deal was found by Cheapflights users on 6/17. 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 9/161:56 pm
ONT
-
PRG
2 stops18h 34m
United Airlines
Wed 9/302:35 pm
PRG
-
ONT
2 stops17h 24m
United Airlines
Deal found 6/17$803
This United Airlines deal was found by Cheapflights users on 6/17. 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.
Thu 9/109:01 am
ONT
-
PRG
2 stops18h 44m
United Airlines
Fri 10/911:45 am
PRG
-
ONT
2 stops19h 14m
United Airlines
Deal found 6/17$810
This United Airlines deal was found by Cheapflights users on 6/15. 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.
Sun 9/137:00 am
ONT
-
PRG
2 stops18h 50m
United Airlines
Sat 9/262:40 pm
PRG
-
ONT
2 stops17h 19m
United Airlines
Deal found 6/15$820

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 June 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$749
(United Airlines)

One-way from

$375
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,080
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 ($228 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 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

Sun 8/23

7:00 am-10:50 am

2 stops18h 50m

Václav Havel Prague

Wed 9/2

12:30 pm-10:35 pm

2 stops19h 05m

$761

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Sun 8/23

7:00 am-10:50 am

2 stops18h 50m

Václav Havel Prague

Tue 9/1

9:10 am-8:53 pm

2 stops20h 43m

$761

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Tue 11/24

5:00 am-1:05 pm

2 stops23h 05m

Václav Havel Prague

Mon 11/30

1:45 pm-12:20 pm

2 stops55h 35m

$771

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Sun 9/13

7:00 am-10:50 am

2 stops18h 50m

Václav Havel Prague

Sun 9/27

11:45 am-10:59 pm

2 stops20h 14m

$820

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Sat 8/22

7:00 am-10:50 am

2 stops18h 50m

Václav Havel Prague

Mon 8/31

9:05 am-6:11 pm

2 stops18h 06m

$871

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Sat 9/5

11:00 am-4:05 pm

2 stops20h 05m

Václav Havel Prague

Sat 9/12

9:35 am-6:11 pm

2 stops17h 36m

$954

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Fri 9/18

7:00 am-10:50 am

2 stops18h 50m

Václav Havel Prague

Sun 10/11

11:45 am-9:59 pm

2 stops19h 14m

$965

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Tue 8/4

11:51 pm-1:00 pm

2 stops52h 09m

Václav Havel Prague

Tue 8/18

9:15 am-11:11 pm

2 stops22h 56m

$1,108

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Wed 9/16

9:10 pm-8:20 am

2 stops26h 10m

Václav Havel Prague

Mon 9/21

1:55 pm-8:13 pm

2 stops39h 18m

$1,128

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Mon 9/14

9:10 pm-8:20 am

2 stops26h 10m

Václav Havel Prague

Thu 9/24

1:55 pm-8:13 pm

2 stops39h 18m

$1,128

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/17

Showing 1-10 of 24 resultsSorted by cheapest first
1
2
3
  • 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 42m. 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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