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$490+ 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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PRG
Aug 12 — Aug 191
Tue 8/12
Tue 8/19
1 adult, Economy
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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 August 7, 2025.

Round-trip from

$631
(United Airlines)

One-way from

$490
(Ovago)

Popular in

June

Cheapest in

February

Average price

$845
From Ontario to Václav Havel Prague
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One-way flight from Ontario to Václav Havel Prague
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Highest demand for flights based on searches. 9% potential increase in price ($86 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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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 August 7, 2025.

This United Airlines deal was found by Cheapflights users on 8/7. 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 9/35:10 amONT - PRG
2 stops25h 50mUnited Airlines
Wed 9/101:40 pmPRG - ONT
2 stops31h 33mUnited Airlines
Deal found 8/7$667
This United Airlines deal was found by Cheapflights users on 8/6. 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 8/276:00 amONT - PRG
2 stops26h 55mUnited Airlines
Wed 9/101:40 pmPRG - ONT
2 stops39h 53mUnited Airlines
Deal found 8/6$671
This United Airlines deal was found by Cheapflights users on 8/6. 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 11/71:29 pmONT - PRG
2 stops17h 36mUnited Airlines
Tue 11/187:20 amPRG - ONT
2 stops19h 14mUnited Airlines
Deal found 8/6$676
This United Airlines deal was found by Cheapflights users on 8/7. 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 11/275:05 amONT - PRG
2 stops32h 20mUnited Airlines
Fri 12/57:40 amPRG - ONT
3 stops24h 09mUnited Airlines
Deal found 8/7$680
This United Airlines deal was found by Cheapflights users on 8/6. 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 11/71:29 pmONT - PRG
2 stops17h 36mUnited Airlines
Fri 11/216:05 amPRG - ONT
2 stops25h 26mUnited Airlines
Deal found 8/6$687
This United Airlines deal was found by Cheapflights users on 8/7. 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 8/156:39 pmONT - PRG
2 stops17h 41mUnited Airlines
Fri 8/2210:25 amPRG - ONT
2 stops21h 05mUnited Airlines
Deal found 8/7$726
This United Airlines deal was found by Cheapflights users on 8/7. 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 9/217:00 amONT - PRG
2 stops20h 10mUnited Airlines
Wed 10/12:30 pmPRG - ONT
2 stops17h 22mUnited Airlines
Deal found 8/7$751
This United Airlines deal was found by Cheapflights users on 8/7. 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 9/61:15 pmONT - PRG
2 stops19h 35mUnited Airlines
Fri 9/1911:40 amPRG - ONT
2 stops18h 45mUnited Airlines
Deal found 8/7$765
This United Airlines deal was found by Cheapflights users on 8/6. 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 12/131:34 pmONT - PRG
2 stops15h 31mUnited Airlines
Tue 12/236:05 amPRG - ONT
2 stops20h 38mUnited Airlines
Deal found 8/6$791
This United Airlines deal was found by Cheapflights users on 8/7. 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 9/66:50 pmONT - PRG
2 stops17h 30mUnited Airlines
Sat 9/1311:40 amPRG - ONT
2 stops18h 45mUnited Airlines
Deal found 8/7$806
This United Airlines deal was found by Cheapflights users on 8/6. 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 10/199:36 amONT - PRG
2 stops19h 04mUnited Airlines
Sun 10/267:20 amPRG - ONT
2 stops18h 14mUnited Airlines
Deal found 8/6$808

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 August 7, 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 1/7

7:00 am-11:05 am

2 stops19h 05m

Václav Havel Prague

Wed 1/21

7:20 am-8:17 pm

2 stops21h 57m

$631

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Tue 1/6

10:40 am-2:05 pm

2 stops18h 25m

Václav Havel Prague

Tue 1/20

7:20 am-6:00 pm

2 stops19h 40m

$632

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Tue 2/3

10:40 am-2:05 pm

2 stops18h 25m

Václav Havel Prague

Tue 2/17

6:05 am-6:00 pm

2 stops20h 55m

$642

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Wed 9/3

5:10 am-4:00 pm

2 stops25h 50m

Václav Havel Prague

Wed 9/10

1:40 pm-12:13 pm

2 stops31h 33m

$667

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Wed 8/27

6:00 am-5:55 pm

2 stops26h 55m

Václav Havel Prague

Wed 9/10

1:40 pm-8:33 pm

2 stops39h 53m

$671

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Fri 11/7

1:29 pm-4:05 pm

2 stops17h 36m

Václav Havel Prague

Tue 11/18

7:20 am-5:34 pm

2 stops19h 14m

$676

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Thu 11/27

5:05 am-10:25 pm

2 stops32h 20m

Václav Havel Prague

Fri 12/5

7:40 am-10:49 pm

3 stops24h 09m

$680

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Mon 2/2

7:00 am-11:05 am

2 stops19h 05m

Václav Havel Prague

Mon 2/16

10:10 am-9:21 pm

2 stops20h 11m

$681

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Fri 11/7

1:29 pm-4:05 pm

2 stops17h 36m

Václav Havel Prague

Fri 11/21

6:05 am-10:31 pm

2 stops25h 26m

$687

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Sun 9/21

7:00 am-12:10 pm

2 stops20h 10m

Václav Havel Prague

Wed 10/1

2:30 pm-10:52 pm

2 stops17h 22m

$751

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/6

Showing 1-10 of 22 results
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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 $1,118). 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.

Reviews of airlines servicing Prague

Get insights into the airlines that provide service to Prague. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Prague. Reviews last updated August 7, 2025.
Get a feel of what it's like to fly with China Airlines, United Airlines, and Air Canada from Ontario to Prague by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
China Airlines
8.3
Very good
760 reviews

Boarding

8.3

Entertainment

8.0

Food

7.8

Overall

8.3

Comfort

8.0

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.
China Airlines
8.3
Very good
760 reviews
China Airlines
8.3
Very good
760 reviews

Boarding

8.3

Entertainment

8.0

Food

7.8

Overall

8.3

Comfort

8.0

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.
United Airlines
7.4
Good
8,916 reviews
China Airlines
8.3
Very good
760 reviews

Boarding

8.3

Entertainment

8.0

Food

7.8

Overall

8.3

Comfort

8.0

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.
Air Canada
7.1
Good
9,899 reviews
China Airlines
8.3
Very good
760 reviews

Boarding

8.3

Entertainment

8.0

Food

7.8

Overall

8.3

Comfort

8.0

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.
Iberia
7.0
Good
2,866 reviews
China Airlines
8.3
Very good
760 reviews

Boarding

8.3

Entertainment

8.0

Food

7.8

Overall

8.3

Comfort

8.0

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.
British Airways
6.7
Okay
7,251 reviews
China Airlines
8.3
Very good
760 reviews

Boarding

8.3

Entertainment

8.0

Food

7.8

Overall

8.3

Comfort

8.0

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.

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.

  • What is the cheapest airline to fly from Ontario to Prague round-trip?

    Cheapflights users have booked flights from Ontario to Prague round-trip from $631.

  • 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 $1,118). 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.

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