HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Warsaw

$250+ 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 7/27. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — WAW
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Warsaw with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 January 29, 2026.

This oojo deal was found by Cheapflights users on 1/29. 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 3/32:39 pm
ONT
-
WAW
2 stops19h 06m
British Airways
Tue 3/108:50 am
WAW
-
ONT
2 stops21h 59m
British Airways
Deal found 1/29$476
This oojo deal was found by Cheapflights users on 1/27. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/245:02 pm
ONT
-
WAW
2 stops16h 43m
British Airways
Fri 3/67:35 am
WAW
-
ONT
2 stops23h 54m
British Airways
Deal found 1/27$488
This United Airlines deal was found by Cheapflights users on 1/28. 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.
Wed 2/46:00 am
ONT
-
WAW
2 stops31h 30m
United Airlines
Wed 2/186:30 am
WAW
-
ONT
2 stops25h 27m
United Airlines
Deal found 1/28$502
This United Airlines deal was found by Cheapflights users on 1/26. 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.
Fri 3/136:15 am
ONT
-
WAW
2 stops26h 15m
United Airlines
Fri 3/202:20 pm
WAW
-
ONT
2 stops29h 58m
United Airlines
Deal found 1/26$504
This United Airlines deal was found by Cheapflights users on 1/28. 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 2/191:45 pm
ONT
-
WAW
2 stops17h 45m
United Airlines
Thu 3/59:30 am
WAW
-
ONT
2 stops22h 27m
United Airlines
Deal found 1/28$505
This United Airlines deal was found by Cheapflights users on 1/29. 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 5/41:40 pm
ONT
-
WAW
2 stops23h 25m
United Airlines
Mon 5/112:25 pm
WAW
-
ONT
2 stops17h 34m
United Airlines
Deal found 1/29$506
This Delta deal was found by Cheapflights users on 1/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/312:41 pm
ONT
-
WAW
2 stops18h 24m
Delta
Thu 2/196:05 am
WAW
-
ONT
2 stops26h 44m
Delta
Deal found 1/28$507
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Fri 2/135:00 am
ONT
-
WAW
2 stops23h 50m
United Airlines
Fri 2/206:40 am
WAW
-
ONT
2 stops24h 19m
United Airlines
Deal found 1/27$517
This United Airlines deal was found by Cheapflights users on 1/28. 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.
Sun 3/156:37 pm
ONT
-
WAW
2 stops34h 18m
United Airlines
Sun 3/221:35 pm
WAW
-
ONT
2 stops54h 43m
United Airlines
Deal found 1/28$523
This United Airlines deal was found by Cheapflights users on 1/28. 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 4/307:00 am
ONT
-
WAW
2 stops25h 15m
United Airlines
Wed 5/62:15 pm
WAW
-
ONT
2 stops40h 43m
United Airlines
Deal found 1/28$526
This oojo deal was found by Cheapflights users on 1/29. 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.
Wed 4/294:52 pm
ONT
-
WAW
2 stops18h 53m
British Airways
Wed 5/138:20 am
WAW
-
ONT
2 stops23h 15m
British Airways
Deal found 1/29$541
This oojo deal was found by Cheapflights users on 1/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1212:47 pm
ONT
-
WAW
2 stops19h 23m
British Airways
Wed 8/2611:50 am
WAW
-
ONT
2 stops39h 27m
British Airways
Deal found 1/28$546

Find 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 January 29, 2026.

Round-trip from

$476
(oojo)

One-way from

$250
(United Airlines)

Popular in

June

Cheapest in

November

Average price

$597
From Ontario to Warsaw
Search Deals
One-way flight from Ontario to Warsaw
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($182 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 29, 2026.
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 3/3

2:39 pm-6:45 pm

2 stops19h 06m

Warsaw Frederic Chopin

Tue 3/10

8:50 am-10:49 pm

2 stops21h 59m

$476

OntarioWarsaw

ONT - WAW

ONTWAW

Ontario

Tue 2/24

5:02 pm-6:45 pm

2 stops16h 43m

Warsaw Frederic Chopin

Fri 3/6

7:35 am-10:29 pm

2 stops23h 54m

$488

OntarioWarsaw

ONT - WAW

ONTWAW

Ontario

Fri 3/13

6:15 am-4:30 pm

2 stops26h 15m

Warsaw Frederic Chopin

Fri 3/20

2:20 pm-12:18 pm

2 stops29h 58m

$504

OntarioWarsaw

ONT - WAW

ONTWAW

Ontario

Sat 2/28

1:53 pm-4:30 pm

2 stops41h 37m

Warsaw Frederic Chopin

Sat 3/14

6:30 am-10:57 pm

2 stops24h 27m

$505

OntarioWarsaw

ONT - WAW

ONTWAW

Ontario

Thu 2/19

1:45 pm-4:30 pm

2 stops17h 45m

Warsaw Frederic Chopin

Thu 3/5

9:30 am-10:57 pm

2 stops22h 27m

$505

OntarioWarsaw

ONT - WAW

ONTWAW

Ontario

Sun 3/22

6:00 am-4:30 pm

2 stops26h 30m

Warsaw Frederic Chopin

Sun 4/5

6:40 am-9:50 pm

2 stops24h 10m

$505

OntarioWarsaw

ONT - WAW

ONTWAW

Ontario

Thu 3/26

1:50 pm-4:30 pm

2 stops18h 40m

Warsaw Frederic Chopin

Thu 4/2

6:40 am-10:45 pm

2 stops25h 05m

$505

OntarioWarsaw

ONT - WAW

ONTWAW

Ontario

Mon 5/4

1:40 pm-10:05 pm

2 stops23h 25m

Warsaw Frederic Chopin

Mon 5/11

2:25 pm-10:59 pm

2 stops17h 34m

$506

OntarioWarsaw

ONT - WAW

ONTWAW

Ontario

Sun 3/1

6:09 am-4:30 pm

2 stops25h 21m

Warsaw Frederic Chopin

Sun 3/15

6:05 am-10:57 pm

2 stops24h 52m

$507

OntarioWarsaw

ONT - WAW

ONTWAW

Ontario

Sun 2/22

6:09 am-4:30 pm

2 stops25h 21m

Warsaw Frederic Chopin

Sat 2/28

1:35 pm-9:59 pm

2 stops41h 24m

$517

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 23 results
1
2
3

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, October is the cheapest month in which you can book a flight from Ontario to Warsaw (average of $435). Flying from Ontario to Warsaw in June is currently the most expensive (average of $698). 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 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 19h 06m. British Airways provides one of the quickest options available for as low as $476. 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.

  • 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, October is the cheapest month in which you can book a flight from Ontario to Warsaw (average of $435). Flying from Ontario to Warsaw in June is currently the most expensive (average of $698). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Warsaw

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Frederic Chopin flights
San Francisco to Frederic Chopin flights
Los Angeles to Modlin flights
Santa Ana to Frederic Chopin flights
Ontario to Frederic Chopin flights
San Jose to Frederic Chopin flights
Los Angeles to Krakow flights
San Francisco to Modlin flights
San Francisco to Krakow flights
Long Beach to Frederic Chopin flights
Los Angeles to Wroclaw flights
Los Angeles to Gdansk flights
San Diego to Frederic Chopin flights
Las Vegas to Frederic Chopin flights
Oakland to Frederic Chopin flights
Ontario to Krakow flights
San Francisco to Katowice flights
San Diego to Krakow flights
Los Angeles to Poznan flights
Santa Ana to Krakow flights
Las Vegas to Gdansk flights
Sacramento to Frederic Chopin flights
San Diego to Gdansk flights
San Jose to Krakow flights
Los Angeles to Katowice flights
San Francisco to Rzeszow flights
Medford to Frederic Chopin flights
San Jose to Rzeszow flights
Las Vegas to Krakow flights
San Francisco to Gdansk flights
Sacramento to Krakow flights
Reno to Frederic Chopin flights
San Jose to Gdansk flights
Burbank to Krakow flights
Oakland to Krakow flights
Burbank to Frederic Chopin flights
San Francisco to Poznan flights
San Francisco to Wroclaw flights
Las Vegas to Poznan flights
Monterey to Gdansk flights
San Jose to Łódź flights
Los Angeles to Lublin flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.