HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Prague

$450+ 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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PRG
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Prague with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 September 15, 2025.

Round-trip from

$555
(Iberia)

One-way from

$450
(United Airlines)

Popular in

June

Cheapest in

November

Average price

$643
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. 13% potential increase in price ($122 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find 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 September 15, 2025.

This Iberia deal was found by Cheapflights users on 9/14. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2910:57 amONT - PRG
2 stops22h 33mMultiple Airlines
Wed 11/59:30 pmPRG - ONT
2 stops35h 27mMultiple Airlines
Deal found 9/14$555
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 11/46:38 pmONT - PRG
2 stops18h 47mUnited Airlines
Tue 11/187:25 amPRG - ONT
2 stops19h 09mUnited Airlines
Deal found 9/15$558
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Wed 10/295:05 amONT - PRG
2 stops24h 00mUnited Airlines
Wed 11/56:50 amPRG - ONT
3 stops25h 01mUnited Airlines
Deal found 9/14$573
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 11/45:05 amONT - PRG
2 stops23h 00mUnited Airlines
Mon 11/103:10 pmPRG - ONT
2 stops39h 39mUnited Airlines
Deal found 9/15$577
This Iberia deal was found by Cheapflights users on 9/14. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/276:10 amONT - PRG
2 stops31h 40mMultiple Airlines
Fri 12/56:00 amPRG - ONT
2 stops25h 28mMultiple Airlines
Deal found 9/14$605
This United Airlines deal was found by Cheapflights users on 9/15. 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 11/276:00 amONT - PRG
2 stops31h 25mUnited Airlines
Fri 12/57:35 amPRG - ONT
3 stops24h 14mUnited Airlines
Deal found 9/15$608
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Sun 11/21:29 pmONT - PRG
2 stops17h 36mUnited Airlines
Sun 11/161:45 pmPRG - ONT
2 stops18h 06mUnited Airlines
Deal found 9/14$618
This United Airlines deal was found by Cheapflights users on 9/15. 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 10/291:33 pmONT - PRG
2 stops16h 32mUnited Airlines
Sun 11/21:45 pmPRG - ONT
2 stops18h 06mUnited Airlines
Deal found 9/15$623
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 10/144:15 pmONT - PRG
2 stops14h 45mUnited Airlines
Tue 10/286:50 amPRG - ONT
2 stops19h 46mUnited Airlines
Deal found 9/15$628
This Tripair deal was found by Cheapflights users on 9/15. 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 Tripair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/237:02 amONT - PRG
2 stops17h 38mUnited Airlines
Sat 11/83:10 pmPRG - ONT
2 stops16h 41mUnited Airlines
Deal found 9/15$633
This oojo deal was found by Cheapflights users on 9/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/53:08 pmONT - PRG
2 stops17h 22mBritish Airways
Wed 11/126:30 pmPRG - ONT
2 stops36h 29mBritish Airways
Deal found 9/14$638
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Sat 10/189:36 amONT - PRG
2 stops19h 04mUnited Airlines
Sat 11/17:35 amPRG - ONT
2 stops21h 09mUnited Airlines
Deal found 9/15$662

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 September 15, 2025.
Use the filters below to find and compare flights from Ontario to Prague that are best for you.

Fly from

Ontario

Fly to

Prague

Route

Depart

Return

Price

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Wed 11/5

1:33 pm-4:05 pm

2 stops17h 32m

Václav Havel Prague

Thu 11/13

11:50 am-10:51 pm

2 stops20h 01m

$558

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Tue 11/4

6:38 pm-10:25 pm

2 stops18h 47m

Václav Havel Prague

Tue 11/18

7:25 am-5:34 pm

2 stops19h 09m

$558

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Wed 10/29

5:05 am-1:05 pm

2 stops24h 00m

Václav Havel Prague

Wed 11/5

6:50 am-10:51 pm

3 stops25h 01m

$573

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Thu 11/27

6:10 am-10:50 pm

2 stops31h 40m

Václav Havel Prague

Fri 12/5

6:00 am-10:28 pm

2 stops25h 28m

$605

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Thu 11/27

7:00 am-4:05 pm

2 stops24h 05m

Václav Havel Prague

Fri 12/5

7:35 am-10:49 pm

3 stops24h 14m

$608

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Sun 1/18

7:00 am-9:50 am

2 stops17h 50m

Václav Havel Prague

Sun 1/25

7:25 am-8:58 pm

2 stops22h 33m

$613

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Sun 11/2

1:29 pm-4:05 pm

2 stops17h 36m

Václav Havel Prague

Sun 11/16

1:45 pm-10:51 pm

2 stops18h 06m

$618

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Tue 10/14

4:15 pm-4:00 pm

2 stops14h 45m

Václav Havel Prague

Tue 10/28

6:50 am-6:36 pm

2 stops19h 46m

$628

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Fri 1/16

10:57 am-2:00 pm

2 stops18h 03m

Václav Havel Prague

Fri 1/30

11:00 am-10:02 pm

2 stops20h 02m

$645

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Wed 12/3

1:34 pm-2:05 pm

2 stops15h 31m

Václav Havel Prague

Thu 12/11

6:15 am-5:37 pm

2 stops20h 22m

$663

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 22 results
1
2
3

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.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Prague

What is the cheapest month to book a flight from Ontario to Prague?

Currently, November is the cheapest month in which you can book a flight from Ontario to Prague (average of $651). Flying from Ontario to Prague in June is currently the most expensive (average of $1,119). 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 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 32m. 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.

  • What is the cheapest month to book a flight from Ontario to Prague?

    Currently, November is the cheapest month in which you can book a flight from Ontario to Prague (average of $651). Flying from Ontario to Prague in June is currently the most expensive (average of $1,119). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.