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Prague

$325+ 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 5/17. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PRG
Mar 12 — Mar 191
Thu 3/12
Thu 3/19
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 February 10, 2026.

This oojo deal was found by Cheapflights users on 2/8. 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.
Tue 3/315:02 pm
ONT
-
PRG
2 stops31h 08m
British Airways
Tue 4/146:35 am
PRG
-
ONT
2 stops23h 19m
British Airways
Deal found 2/8$496
This Delta deal was found by Cheapflights users on 2/8. 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.
Mon 10/269:55 am
ONT
-
PRG
2 stops17h 45m
Delta
Tue 11/106:00 am
PRG
-
ONT
2 stops19h 12m
Delta
Deal found 2/8$508
This United Airlines deal was found by Cheapflights users on 2/8. 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 10/246:30 pm
ONT
-
PRG
2 stops37h 35m
United Airlines
Thu 11/123:10 pm
PRG
-
ONT
2 stops16h 56m
United Airlines
Deal found 2/8$510
This United Airlines deal was found by Cheapflights users on 2/6. 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.
Tue 3/175:15 am
ONT
-
PRG
2 stops26h 50m
United Airlines
Wed 3/256:15 am
PRG
-
ONT
2 stops24h 03m
United Airlines
Deal found 2/6$512
This United Airlines deal was found by Cheapflights users on 2/7. 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 3/295:10 am
ONT
-
PRG
2 stops31h 10m
United Airlines
Mon 4/132:20 pm
PRG
-
ONT
2 stops36h 42m
United Airlines
Deal found 2/7$531
This United Airlines deal was found by Cheapflights users on 2/9. 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 3/286:37 pm
ONT
-
PRG
2 stops34h 03m
United Airlines
Mon 4/62:20 pm
PRG
-
ONT
2 stops36h 42m
United Airlines
Deal found 2/9$543
This United Airlines deal was found by Cheapflights users on 2/9. 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 5/111:30 pm
ONT
-
PRG
2 stops19h 10m
United Airlines
Tue 5/196:10 am
PRG
-
ONT
2 stops20h 42m
United Airlines
Deal found 2/9$554
This Delta deal was found by Cheapflights users on 2/8. 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.
Fri 10/237:00 am
ONT
-
PRG
2 stops27h 35m
Delta
Thu 11/126:00 am
PRG
-
ONT
2 stops19h 12m
Delta
Deal found 2/8$558
This United Airlines deal was found by Cheapflights users on 2/8. 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 3/3011:05 am
ONT
-
PRG
2 stops16h 40m
United Airlines
Mon 4/139:05 am
PRG
-
ONT
2 stops21h 45m
United Airlines
Deal found 2/8$560
This United Airlines deal was found by Cheapflights users on 2/8. 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 10/297:00 am
ONT
-
PRG
2 stops25h 05m
United Airlines
Tue 11/106:15 am
PRG
-
ONT
2 stops25h 11m
United Airlines
Deal found 2/8$562

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 February 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$496
(oojo)

One-way from

$325
(United Airlines)

Popular in

June

Cheapest in

February

Average price

$492
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. 18% potential increase in price ($160 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($24 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 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 February 10, 2026.
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 4/1

5:02 pm-10:55 pm

2 stops20h 53m

Václav Havel Prague

Wed 4/15

5:15 pm-9:59 pm

2 stops37h 44m

$496

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Tue 3/31

5:02 pm-9:10 am

2 stops31h 08m

Václav Havel Prague

Tue 4/14

6:35 am-8:54 pm

2 stops23h 19m

$496

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Wed 3/11

1:50 pm-4:05 pm

2 stops18h 15m

Václav Havel Prague

Tue 3/17

7:25 am-8:50 pm

2 stops21h 25m

$510

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Mon 3/16

1:50 pm-4:05 pm

2 stops18h 15m

Václav Havel Prague

Mon 3/23

3:10 pm-5:41 pm

2 stops34h 31m

$510

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Tue 3/17

5:15 am-4:05 pm

2 stops26h 50m

Václav Havel Prague

Wed 3/25

6:15 am-10:18 pm

2 stops24h 03m

$512

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Wed 3/18

6:37 pm-10:25 pm

2 stops19h 48m

Václav Havel Prague

Wed 3/25

6:15 am-10:18 pm

2 stops24h 03m

$512

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Wed 4/15

1:27 pm-5:30 pm

2 stops19h 03m

Václav Havel Prague

Wed 4/22

9:10 am-8:36 pm

2 stops20h 26m

$523

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Wed 3/25

1:40 pm-10:25 pm

2 stops24h 45m

Václav Havel Prague

Wed 4/1

9:10 am-10:26 pm

2 stops22h 16m

$523

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Wed 4/15

1:27 pm-5:30 pm

2 stops19h 03m

Václav Havel Prague

Wed 4/29

11:30 am-9:50 pm

2 stops19h 20m

$523

OntarioPrague

ONT - PRG

ONTPRG

Ontario

Sun 3/29

5:10 am-9:20 pm

2 stops31h 10m

Václav Havel Prague

Mon 4/13

2:20 pm-6:02 pm

2 stops36h 42m

$531

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/9

Showing 1-10 of 21 results
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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.

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 $424). Flying from Ontario to Prague in June is currently the most expensive (average of $697). 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 18h 15m. The distance between Ontario and Prague is about 5917 mi. This flight may include one or multiple stops.

  • 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 $424). Flying from Ontario to Prague in June is currently the most expensive (average of $697). 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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