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$494+ Cheap flights from Prague (PRG) to Ontario (ONT)

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 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
PRG — ONT
Dec 20 — Dec 271
Sat 12/20
Sat 12/27
1 adult, Economy
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Find flight deals from Prague to Ontario

Cheapest flights from Prague to Ontario
Explore the most affordable flight options available from Prague to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2025.

This United Airlines deal was found by Cheapflights users on 11/18. 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.
Thu 11/277:35 amPRG - ONT
2 stops18h 59mUnited Airlines
Fri 11/281:29 pmONT - PRG
2 stops23h 56mUnited Airlines
Deal found 11/18$733
This United Airlines deal was found by Cheapflights users on 11/20. 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 12/263:15 pmPRG - ONT
2 stops35h 28mUnited Airlines
Thu 1/15:05 amONT - PRG
2 stops32h 20mUnited Airlines
Deal found 11/20$902
This United Airlines deal was found by Cheapflights users on 11/18. 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.
Thu 11/2011:50 amPRG - ONT
2 stops20h 01mUnited Airlines
Sun 11/236:38 pmONT - PRG
2 stops34h 37mUnited Airlines
Deal found 11/18$936
This United Airlines deal was found by Cheapflights users on 11/18. 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.
Sun 12/213:00 pmPRG - ONT
2 stops40h 25mUnited Airlines
Thu 1/15:05 amONT - PRG
2 stops32h 20mUnited Airlines
Deal found 11/18$1,007
This United Airlines deal was found by Cheapflights users on 11/19. 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 11/263:10 pmPRG - ONT
2 stops16h 41mUnited Airlines
Sat 5/237:00 amONT - PRG
2 stops18h 50mUnited Airlines
Deal found 11/19$1,035
This Delta deal was found by Cheapflights users on 11/19. 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 12/96:00 amPRG - ONT
2 stops20h 07mDelta
Fri 12/1212:12 pmONT - PRG
2 stops19h 53mDelta
Deal found 11/19$1,224
This United Airlines deal was found by Cheapflights users on 11/20. 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 12/246:15 amPRG - ONT
2 stops20h 55mUnited Airlines
Sun 1/41:40 pmONT - PRG
2 stops17h 25mUnited Airlines
Deal found 11/20$1,371
This United Airlines deal was found by Cheapflights users on 11/19. 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 12/57:35 amPRG - ONT
2 stops19h 02mUnited Airlines
Fri 12/1911:59 pmONT - PRG
2 stops26h 31mUnited Airlines
Deal found 11/19$1,718
This American Airlines deal was found by Cheapflights users on 11/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/106:50 amPRG - ONT
2 stops20h 27mAmerican Airlines
Fri 12/1212:46 pmONT - PRG
2 stops20h 39mAmerican Airlines
Deal found 11/19$1,863
This United Airlines deal was found by Cheapflights users on 11/18. 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.
Wed 12/177:30 amPRG - ONT
2 stops19h 05mUnited Airlines
Fri 12/1911:59 pmONT - PRG
2 stops26h 31mUnited Airlines
Deal found 11/18$1,893

Cheap flight deals from Prague to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Prague (PRG) to Ontario (ONT). 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 November 20, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$733
(United Airlines)

One-way from

$494
(British Airways)

Popular in

August

Cheapest in

February

Average price

$720
Provider with most accurate pricing for Václav Havel Prague-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Václav Havel Prague-Los Angeles flights.
Search Deals
From Václav Havel Prague to Ontario
Search Deals
One-way flight from Václav Havel Prague to Ontario
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($46 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Prague to Ontario 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 November 20, 2025.
Use the filters below to find and compare flights from Prague to Ontario that are best for you.

Fly from

Prague

Fly to

Ontario

Route

Depart

Return

Price

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Tue 3/3

7:25 am-5:41 pm

2 stops19h 16m

Ontario

Mon 3/16

1:50 pm-4:05 pm

2 stops18h 15m

$733

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Sat 3/7

7:35 am-5:38 pm

2 stops19h 03m

Ontario

Mon 3/16

1:50 pm-4:05 pm

2 stops18h 15m

$733

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Thu 3/12

7:35 am-8:50 pm

2 stops21h 15m

Ontario

Sat 3/14

11:59 pm-9:50 am

2 stops25h 51m

$734

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Fri 1/16

12:10 pm-10:53 pm

2 stops19h 43m

Ontario

Fri 2/27

1:45 pm-4:05 pm

2 stops17h 20m

$734

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Tue 2/17

7:25 am-8:50 pm

2 stops22h 25m

Ontario

Wed 3/4

1:45 pm-4:05 pm

2 stops17h 20m

$734

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Thu 2/5

7:35 am-10:53 pm

2 stops24h 18m

Ontario

Sun 2/8

6:00 am-10:25 pm

2 stops31h 25m

$743

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Thu 2/12

1:45 pm-10:57 pm

2 stops18h 12m

Ontario

Sat 2/28

1:45 pm-4:05 pm

2 stops17h 20m

$746

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Sat 2/28

7:35 am-5:41 pm

2 stops19h 06m

Ontario

Sat 3/7

1:50 pm-2:05 pm

2 stops15h 15m

$783

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Wed 4/8

9:10 am-11:06 pm

2 stops22h 56m

Ontario

Fri 4/10

1:34 pm-1:40 pm

2 stops15h 06m

$835

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Fri 3/6

1:45 pm-10:57 pm

2 stops18h 12m

Ontario

Sat 3/14

1:50 pm-4:05 pm

2 stops18h 15m

$846

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/18

Showing 1-10 of 22 results
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Best time to book a flight from Prague to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Prague 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 Prague to Ontario

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

Currently, May is the cheapest month in which you can book a flight from Prague to Ontario (average of $493). Flying from Prague to Ontario in July is currently the most expensive (average of $705). 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 Prague to Ontario. 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 Prague to Ontario?

    For as low as $733, United Airlines can have you in Ontario from Prague in 19h 16m. The distance between Prague and Ontario is about 5917 mi.

  • Can I find deals for flights from Prague to Ontario that include hotel bookings?

    Yes. In addition to deals on Prague to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Prague to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Prague to Ontario.

  • Can I find deals for business class flights from Prague to Ontario?

    Yes. Cheapflights offers flight deals from Prague to Ontario 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 Prague to Ontario?

    Currently, May is the cheapest month in which you can book a flight from Prague to Ontario (average of $493). Flying from Prague to Ontario in July is currently the most expensive (average of $705). 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

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