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$148+ Cheap flights from New Windsor to Ontario (SWF - 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 6/1. Fares are subject to change and may not be available on all flights or dates of travel.
SWF — ONT
May 29 — Jun 51
Fri 5/29
Fri 6/5
1 adult, Economy
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Cheap flight deals from Stewart to Ontario

One-way flights from Stewart to Ontario
Search for one-way flight options from Stewart to Ontario. Find affordable one-way fares based on user searches. Data last updated April 29, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/19:41 am
SWF
-
ONT
2 stops48h 54m
Multiple Airlines
Deal found 4/28$148
This Kiwi.com deal was found by Cheapflights users on 4/24. 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 5/2712:05 pm
SWF
-
ONT
3 stops34h 06m
Multiple Airlines
Deal found 4/24$216
This Kiwi.com deal was found by Cheapflights users on 4/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/177:47 pm
SWF
-
ONT
3 stops46h 57m
Multiple Airlines
Deal found 4/26$225
This Kiwi.com deal was found by Cheapflights users on 4/24. 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 6/1312:05 pm
SWF
-
ONT
3 stops58h 46m
Multiple Airlines
Deal found 4/24$228
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/289:38 am
SWF
-
ONT
3 stops36h 33m
Multiple Airlines
Deal found 4/28$233
This Kiwi.com deal was found by Cheapflights users on 4/24. 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 7/135:49 pm
SWF
-
ONT
3 stops48h 18m
Multiple Airlines
Deal found 4/24$236
This Kiwi.com deal was found by Cheapflights users on 4/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1012:05 pm
SWF
-
ONT
3 stops30h 03m
Multiple Airlines
Deal found 4/26$238
This Kiwi.com deal was found by Cheapflights users on 4/24. 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.
Sun 6/79:38 am
SWF
-
ONT
3 stops41h 11m
Multiple Airlines
Deal found 4/24$239

Find flight deals from Stewart to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Stewart (SWF) 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 April 29, 2026.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Popular in

April

Cheapest in

January

Average price

$435
Provider with most accurate pricing for New Windsor Stewart-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for New Windsor Stewart-Ontario flights.
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($40 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Stewart 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 April 29, 2026.
Use the filters below to find and compare flights from New Windsor to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest one-way

New WindsorOntario

SWF - ONT

SWFONT

New Windsor Stewart

Mon 6/1

9:41 am-3:44 pm

3 stops57h 03m

$199

New WindsorOntario

SWF - ONT

SWFONT

New Windsor Stewart

Sat 6/13

12:05 pm-7:51 pm

3 stops58h 46m

$228

New WindsorOntario

SWF - ONT

SWFONT

New Windsor Stewart

Mon 7/13

5:49 pm-3:07 pm

3 stops48h 18m

$236

New WindsorOntario

SWF - ONT

SWFONT

New Windsor Stewart

Wed 6/10

12:05 pm-3:08 pm

3 stops30h 03m

$238

New WindsorOntario

SWF - ONT

SWFONT

New Windsor Stewart

Sun 6/7

9:38 am-11:49 pm

3 stops41h 11m

$239
Quickest one-way

New WindsorOntario

SWF - ONT

SWFONT

New Windsor Stewart

Sat 5/23

12:05 pm-7:08 am

3 stops22h 03m

$248

New WindsorOntario

SWF - ONT

SWFONT

New Windsor Stewart

Fri 5/15

11:45 am-8:20 am

2 stops23h 35m

$252

New WindsorOntario

SWF - ONT

SWFONT

New Windsor Stewart

Fri 6/12

5:55 pm-3:08 pm

3 stops48h 13m

$265

New WindsorOntario

SWF - ONT

SWFONT

New Windsor Stewart

Thu 5/7

9:38 am-8:20 am

2 stops49h 42m

$271

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/24

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on New Windsor-Ontario flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on New Windsor-Ontario flight deals on Cheapflights vs. Expedia <90% of the time. Price accuracy is based on data collected from New Windsor-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on New Windsor-Ontario flights, Cheapflights users trust Expedia the most. Expedia 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 New Windsor-Ontario 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 Stewart to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Stewart 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.

Related info for your journey

Find useful and relevant information for your journey from Stewart to Ontario. 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 Stewart to Ontario that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Stewart 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.

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