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Stewart

$152+ Cheap flights from Ontario to New Windsor (ONT - SWF)

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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SWF
Mar 12 — Mar 191
Thu 3/12
Thu 3/19
1 adult, Economy
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Cheap flight deals from Ontario to Stewart

One-way flights from Ontario to Stewart
Search for one-way flight options from Ontario to Stewart. Find affordable one-way fares based on user searches. Data last updated February 10, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/106:15 am
ONT
-
SWF
3 stops48h 04m
Multiple Airlines
Deal found 2/10$152
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1412:59 am
ONT
-
SWF
3 stops30h 56m
Multiple Airlines
Deal found 2/9$160
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/79:26 pm
ONT
-
SWF
3 stops34h 29m
Multiple Airlines
Deal found 2/9$164
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/256:15 am
ONT
-
SWF
3 stops24h 24m
Multiple Airlines
Deal found 2/7$172
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/174:00 pm
ONT
-
SWF
2 stops38h 39m
Multiple Airlines
Deal found 2/7$181
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/99:40 pm
ONT
-
SWF
2 stops56h 39m
Multiple Airlines
Deal found 2/10$184
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/186:15 am
ONT
-
SWF
3 stops24h 24m
Multiple Airlines
Deal found 2/7$204
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/76:15 am
ONT
-
SWF
3 stops47h 57m
Multiple Airlines
Deal found 2/8$215
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/274:22 pm
ONT
-
SWF
2 stops38h 17m
Multiple Airlines
Deal found 2/9$216

Find flight deals from Ontario to Stewart

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Stewart (SWF). 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

Popular in

December

Cheapest in

January

Average price

$282
Provider with most accurate pricing for Ontario-New Windsor Stewart flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-New Windsor Stewart flights.
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($11 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 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 Stewart 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 New Windsor that are best for you.

Fly from

Ontario

Fly to

Stewart

Route

Depart

Return

Price

OntarioNew Windsor

ONT - SWF

ONTSWF

Ontario

Tue 3/10

6:15 am-9:19 am

3 stops48h 04m

$152

OntarioNew Windsor

ONT - SWF

ONTSWF

Ontario

Tue 4/14

12:59 am-10:55 am

3 stops30h 56m

$160

OntarioNew Windsor

ONT - SWF

ONTSWF

Ontario

Tue 4/7

9:26 pm-10:55 am

3 stops34h 29m

$164

OntarioNew Windsor

ONT - SWF

ONTSWF

Ontario

Wed 3/25

6:15 am-9:39 am

3 stops24h 24m

$172

OntarioNew Windsor

ONT - SWF

ONTSWF

Ontario

Mon 3/9

9:40 pm-9:19 am

2 stops56h 39m

$184

OntarioNew Windsor

ONT - SWF

ONTSWF

Ontario

Wed 3/18

6:15 am-9:39 am

3 stops24h 24m

$204

OntarioNew Windsor

ONT - SWF

ONTSWF

Ontario

Fri 3/27

4:22 pm-9:39 am

2 stops38h 17m

$216

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/10

Compare providers for flights from Ontario to Stewart

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Stewart in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-New Windsor flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-New Windsor flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-New Windsor flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-New Windsor 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-New Windsor 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 Stewart

Have a flexible travel schedule? Discover the best time to fly to Stewart 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 New Windsor

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

Currently, June is the cheapest month in which you can book a flight from Ontario to New Windsor (average of $78). Flying from Ontario to New Windsor in December is currently the most expensive (average of $160). 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 Stewart. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Stewart 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 New Windsor?

    Currently, June is the cheapest month in which you can book a flight from Ontario to New Windsor (average of $78). Flying from Ontario to New Windsor in December is currently the most expensive (average of $160). 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

Traveling to a place near New Windsor?

Book flights to New Windsor if you plan to visit one of these locations
Kingston

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