Warsaw

$345+ Cheap flights from Ontario (ONT) to Warsaw

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 11/23. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — WAW
Sep 2 — Sep 91
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Cheap flight deals from Ontario to Warsaw

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Warsaw (WA1). 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 28, 2025.

Round-trip from

$497
(Booking.com)

One-way from

$345
(United Airlines)

Popular in

June

Cheapest in

February

Average price

$631
From Ontario to Warsaw
One-way flight from Ontario to Warsaw
Highest demand for flights based on searches. 21% potential increase in price ($179 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($27 potential savings vs. average RT price).
Average for round-trip flights in August 2025

Find flight deals from Ontario to Warsaw

Cheapest flights from Ontario to Warsaw
Explore the most affordable flight options available from Ontario to Warsaw. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 28, 2025.

This British Airways deal was found by Cheapflights users on 8/28. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/252:59 pmONT - WAW
2 stops18h 46mBritish Airways
Wed 12/38:50 amWAW - ONT
2 stops18h 27mBritish Airways
Deal found 8/28$497
This United Airlines deal was found by Cheapflights users on 8/28. 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 - WAW
2 stops32h 25mUnited Airlines
Fri 12/52:20 pmWAW - ONT
2 stops36h 17mUnited Airlines
Deal found 8/28$519
This United Airlines deal was found by Cheapflights users on 8/28. 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 11/226:38 pmONT - WAW
2 stops34h 12mUnited Airlines
Wed 12/32:35 pmWAW - ONT
2 stops30h 42mUnited Airlines
Deal found 8/28$523
This United Airlines deal was found by Cheapflights users on 8/28. 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 11/286:00 amONT - WAW
2 stops21h 55mUnited Airlines
Thu 12/42:30 pmWAW - ONT
2 stops41h 19mUnited Airlines
Deal found 8/28$538
This United Airlines deal was found by Cheapflights users on 8/28. 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 12/2910:42 amONT - WAW
2 stops17h 13mUnited Airlines
Mon 1/122:35 pmWAW - ONT
2 stops17h 18mUnited Airlines
Deal found 8/28$539
This United Airlines deal was found by Cheapflights users on 8/28. 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 11/226:38 pmONT - WAW
2 stops36h 37mUnited Airlines
Mon 12/11:35 pmWAW - ONT
2 stops37h 02mUnited Airlines
Deal found 8/28$540
This United Airlines deal was found by Cheapflights users on 8/28. 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 10/201:53 pmONT - WAW
2 stops19h 47mUnited Airlines
Mon 11/32:35 pmWAW - ONT
2 stops17h 16mUnited Airlines
Deal found 8/28$543
This United Airlines deal was found by Cheapflights users on 8/27. 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 10/251:15 pmONT - WAW
2 stops20h 25mUnited Airlines
Mon 11/32:35 pmWAW - ONT
2 stops17h 16mUnited Airlines
Deal found 8/27$544
This American Airlines deal was found by Cheapflights users on 8/28. 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.
Fri 10/1712:48 pmONT - WAW
2 stops20h 07mAmerican Airlines
Fri 10/248:30 amWAW - ONT
2 stops23h 12mAmerican Airlines
Deal found 8/28$548
This United Airlines deal was found by Cheapflights users on 8/27. 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 - WAW
2 stops18h 59mUnited Airlines
Sun 11/25:05 amWAW - ONT
2 stops20h 29mUnited Airlines
Deal found 8/27$554
This United Airlines deal was found by Cheapflights users on 8/26. 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 11/241:40 pmONT - WAW
2 stops19h 10mUnited Airlines
Mon 12/81:35 pmWAW - ONT
2 stops18h 14mUnited Airlines
Deal found 8/26$555
This United Airlines deal was found by Cheapflights users on 8/28. 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 10/175:05 amONT - WAW
2 stops31h 55mUnited Airlines
Fri 10/312:20 pmWAW - ONT
2 stops40h 31mUnited Airlines
Deal found 8/28$558

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Warsaw 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 28, 2025.
Use the filters below to find and compare flights from Ontario to Warsaw that are best for you.

Fly from

Ontario

Fly to

Warsaw

Route

Depart

Return

Price

OntarioWarsaw

ONT - WAW

ONTWAW

Ontario

Tue 1/27

5:03 pm-6:45 pm

2 stops16h 42m

Warsaw Frederic Chopin

Tue 2/10

8:50 am-5:53 pm

2 stops18h 03m

$497

OntarioWarsaw

ONT - WAW

ONTWAW

Ontario

Tue 11/25

2:59 pm-6:45 pm

2 stops18h 46m

Warsaw Frederic Chopin

Wed 12/3

8:50 am-6:17 pm

2 stops18h 27m

$497

OntarioWarsaw

ONT - WAW

ONTWAW

Ontario

Sat 1/24

5:03 pm-7:05 pm

2 stops17h 02m

Warsaw Frederic Chopin

Sat 2/7

8:50 am-5:53 pm

2 stops18h 03m

$503

OntarioWarsaw

ONT - WAW

ONTWAW

Ontario

Mon 11/24

5:05 am-10:30 pm

2 stops32h 25m

Warsaw Frederic Chopin

Fri 12/5

6:30 am-12:18 pm

2 stops38h 48m

$519

OntarioWarsaw

ONT - WAW

ONTWAW

Ontario

Wed 11/26

5:05 am-10:30 pm

2 stops32h 25m

Warsaw Frederic Chopin

Fri 12/5

6:30 am-12:18 pm

2 stops38h 48m

$519

OntarioWarsaw

ONT - WAW

ONTWAW

Ontario

Sat 11/22

6:38 pm-4:15 pm

2 stops36h 37m

Warsaw Frederic Chopin

Fri 12/5

6:30 am-12:18 pm

2 stops38h 48m

$519

OntarioWarsaw

ONT - WAW

ONTWAW

Ontario

Fri 11/28

6:00 am-12:55 pm

2 stops21h 55m

Warsaw Frederic Chopin

Sat 12/6

6:30 am-5:37 pm

2 stops20h 07m

$519

OntarioWarsaw

ONT - WAW

ONTWAW

Ontario

Mon 11/24

5:05 am-10:30 pm

2 stops32h 25m

Warsaw Frederic Chopin

Sat 12/6

2:35 pm-12:18 pm

2 stops30h 43m

$519

OntarioWarsaw

ONT - WAW

ONTWAW

Ontario

Sun 11/23

6:00 am-4:15 pm

2 stops25h 15m

Warsaw Frederic Chopin

Sat 12/6

6:30 am-8:42 pm

2 stops23h 12m

$519

OntarioWarsaw

ONT - WAW

ONTWAW

Ontario

Thu 11/27

7:00 am-12:55 pm

2 stops20h 55m

Warsaw Frederic Chopin

Sat 12/6

6:30 am-5:37 pm

2 stops20h 07m

$519

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/25

Showing 1-10 of 24 results
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Best time to book a flight from Ontario to Warsaw

Have a flexible travel schedule? Discover the best time to fly to Warsaw 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 Warsaw

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

Currently, January is the cheapest month in which you can book a flight from Ontario to Warsaw (average of $576). Flying from Ontario to Warsaw in June is currently the most expensive (average of $1,021). 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.

What is the cheapest time of day to fly from ONT to WAW?

Find hourly flight availability from Ontario to Warsaw. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 28, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 12% on flights from Ontario to Warsaw by exploring options for tickets at noon.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Warsaw. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly from for flights from Ontario to Warsaw?

    If you book a flight to Warsaw from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario. There are 0 flights from Ontario to Warsaw per day from 0 different airlines.

  • How long is the flight from Ontario to Warsaw?

    A quick flight from Ontario to Warsaw can take about 16h 42m. British Airways provides one of the quickest options available for as low as $497. Ontario and Warsaw are separated by a distance of 5971 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Ontario to Warsaw one-way?

    One-way options have recently been found by users for as low as $345 on United Airlines. Other airlines that offer cheap prices include British Airways from $409 and Delta from $422 one-way.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Ontario to Warsaw (average of $576). Flying from Ontario to Warsaw in June is currently the most expensive (average of $1,021). 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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