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$536+ 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 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
PRG — ONT
Mar 21 — Mar 281
Sat 3/21
Sat 3/28
1 adult, Economy
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Cheap 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 February 19, 2026.

This United Airlines deal was found by Cheapflights users on 2/18. 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 4/111:30 am
PRG
-
ONT
2 stops19h 20m
United Airlines
Sun 4/121:34 pm
ONT
-
PRG
2 stops22h 46m
United Airlines
Deal found 2/18$727
This United Airlines deal was found by Cheapflights users on 2/19. 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.
Sat 11/73:10 pm
PRG
-
ONT
2 stops16h 56m
United Airlines
Mon 11/167:00 am
ONT
-
PRG
2 stops19h 05m
United Airlines
Deal found 2/19$728
This United Airlines deal was found by Cheapflights users on 2/18. 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.
Fri 10/307:35 am
PRG
-
ONT
2 stops22h 51m
United Airlines
Sun 11/15:00 am
ONT
-
PRG
2 stops32h 25m
United Airlines
Deal found 2/18$737
This United Airlines deal was found by Cheapflights users on 2/19. 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.
Thu 3/53:10 pm
PRG
-
ONT
2 stops16h 47m
United Airlines
Sun 3/81:50 pm
ONT
-
PRG
2 stops18h 15m
United Airlines
Deal found 2/19$772
This United Airlines deal was found by Cheapflights users on 2/19. 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.
Tue 5/126:10 am
PRG
-
ONT
2 stops20h 42m
United Airlines
Tue 5/261:18 pm
ONT
-
PRG
2 stops17h 47m
United Airlines
Deal found 2/19$776
This United Airlines deal was found by Cheapflights users on 2/18. 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 3/177:25 am
PRG
-
ONT
2 stops21h 25m
United Airlines
Wed 3/181:50 pm
ONT
-
PRG
2 stops18h 15m
United Airlines
Deal found 2/18$821
This Delta deal was found by Cheapflights users on 2/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/58:55 am
PRG
-
ONT
2 stops21h 10m
Delta
Mon 3/912:57 pm
ONT
-
PRG
2 stops16h 48m
Delta
Deal found 2/17$832
This United Airlines deal was found by Cheapflights users on 2/18. 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 3/16:15 am
PRG
-
ONT
2 stops20h 26m
United Airlines
Mon 3/161:50 pm
ONT
-
PRG
2 stops18h 15m
United Airlines
Deal found 2/18$834
This United Airlines deal was found by Cheapflights users on 2/19. 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 5/151:25 pm
PRG
-
ONT
2 stops18h 05m
United Airlines
Sat 5/301:18 pm
ONT
-
PRG
2 stops17h 47m
United Airlines
Deal found 2/19$842

Find 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 February 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$727
(United Airlines)

One-way from

$536
(Priceline)

Popular in

December

Cheapest in

May

Average price

$706
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. 3% potential increase in price ($30 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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 February 19, 2026.
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

Wed 4/1

11:30 am-9:50 pm

2 stops19h 20m

Ontario

Sun 4/12

1:34 pm-9:20 pm

2 stops22h 46m

$727

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Sat 5/9

6:00 am-10:59 pm

2 stops25h 59m

Ontario

Sun 5/24

1:18 pm-9:20 pm

2 stops23h 02m

$727

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Thu 3/5

8:55 am-9:05 pm

2 stops21h 10m

Ontario

Mon 3/9

12:57 pm-1:45 pm

2 stops16h 48m

$832

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Sun 3/1

6:15 am-5:41 pm

2 stops20h 26m

Ontario

Mon 3/16

1:50 pm-4:05 pm

2 stops18h 15m

$834

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Sat 5/23

1:25 pm-10:50 pm

2 stops18h 25m

Ontario

Sat 6/6

6:30 am-10:50 am

2 stops19h 20m

$849

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Fri 5/22

11:45 am-9:55 pm

2 stops19h 10m

Ontario

Sun 5/31

5:00 am-9:20 pm

2 stops31h 20m

$851

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Sun 5/24

6:15 am-5:56 pm

2 stops20h 41m

Ontario

Sat 6/6

6:30 am-10:50 am

2 stops19h 20m

$898

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Fri 5/15

11:45 am-10:59 pm

2 stops20h 14m

Ontario

Sat 5/30

1:18 pm-4:05 pm

2 stops17h 47m

$903

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Wed 4/1

11:30 am-9:50 pm

2 stops19h 20m

Ontario

Sat 4/11

1:34 pm-1:30 pm

2 stops14h 56m

$924

PragueOntario

PRG - ONT

PRGONT

Václav Havel Prague

Thu 4/2

6:00 am-5:13 pm

2 stops20h 13m

Ontario

Tue 4/7

6:00 am-1:45 pm

2 stops22h 45m

$936

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/17

Showing 1-10 of 24 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 $482). 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 $727, United Airlines can have you in Ontario from Prague in 19h 20m. The distance between Prague and Ontario is about 5917 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 $482). 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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