$159+ Cheap flights from Ontario (ONT) to Westchester County
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 3/17. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — HPN
Mar 18 — Mar 251
1 adult, Economy
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Find cheap flights from Ontario to Westchester County with Cheapflights
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Cheapest flights from Ontario to Westchester CountyExplore the most affordable flight options available from Ontario to Westchester County. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 16, 2026.
Explore the most affordable flight options available from Ontario to Westchester County. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 16, 2026.
This Delta deal was found by Cheapflights users on 2/13. 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 4/2110:15 pm
ONT
- HPN
1 stop8h 34m
Delta
Sat 5/26:00 am
HPN
- ONT
1 stop8h 36m
Delta
Deal found 2/13![Delta logo]()
$321
This American Airlines deal was found by Cheapflights users on 2/13. 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.
Tue 4/214:52 pm
ONT
- HPN
2 stops14h 38m
American Airlines
Sat 5/21:30 pm
HPN
- ONT
2 stops12h 06m
American Airlines
Deal found 2/13![American Airlines logo]()
$348
This Delta deal was found by Cheapflights users on 2/12. 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.
Sat 2/2810:20 pm
ONT
- HPN
1 stop8h 23m
Delta
Tue 3/36:00 am
HPN
- ONT
1 stop9h 02m
Delta
Deal found 2/12![Delta logo]()
$352
This Delta deal was found by Cheapflights users on 2/14. 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 3/210:20 pm
ONT
- HPN
2 stops10h 36m
Delta
Fri 3/65:12 pm
HPN
- ONT
2 stops9h 37m
Delta
Deal found 2/14![Delta logo]()
$389
This Delta deal was found by Cheapflights users on 2/15. 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.
Sat 2/2810:20 pm
ONT
- HPN
1 stop8h 23m
Delta
Tue 3/106:00 am
HPN
- ONT
1 stop8h 47m
Delta
Deal found 2/15![Delta logo]()
$399
This Delta deal was found by Cheapflights users on 2/15. 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.
Sat 2/2810:20 pm
ONT
- HPN
1 stop8h 23m
Delta
Mon 3/912:48 pm
HPN
- ONT
1 stop11h 12m
Delta
Deal found 2/15![Delta logo]()
$409
This Delta deal was found by Cheapflights users on 2/14. 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.
Thu 3/510:20 pm
ONT
- HPN
1 stop8h 23m
Delta
Mon 3/96:00 am
HPN
- ONT
1 stop8h 47m
Delta
Deal found 2/14![Delta logo]()
$418
Best flights from Ontario to Westchester CountyDiscover carefully curated flight deals from Ontario to Westchester County that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 16, 2026.
Discover carefully curated flight deals from Ontario to Westchester County that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 16, 2026.
This Delta deal was found by Cheapflights users on 2/13. 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 4/2110:15 pm
ONT
- HPN
1 stop8h 34m
Delta
Sat 5/26:00 am
HPN
- ONT
1 stop8h 36m
Delta
Deal found 2/13![Delta logo]()
$321
This American Airlines deal was found by Cheapflights users on 2/13. 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.
Tue 4/214:52 pm
ONT
- HPN
2 stops14h 38m
American Airlines
Sat 5/21:30 pm
HPN
- ONT
2 stops12h 06m
American Airlines
Deal found 2/13![American Airlines logo]()
$348
This Delta deal was found by Cheapflights users on 2/12. 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.
Sat 2/2810:20 pm
ONT
- HPN
1 stop8h 23m
Delta
Tue 3/36:00 am
HPN
- ONT
1 stop9h 02m
Delta
Deal found 2/12![Delta logo]()
$352
This Delta deal was found by Cheapflights users on 2/14. 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 3/210:20 pm
ONT
- HPN
2 stops10h 36m
Delta
Fri 3/65:12 pm
HPN
- ONT
2 stops9h 37m
Delta
Deal found 2/14![Delta logo]()
$389
This Delta deal was found by Cheapflights users on 2/15. 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.
Sat 2/2810:20 pm
ONT
- HPN
1 stop8h 23m
Delta
Tue 3/106:00 am
HPN
- ONT
1 stop8h 47m
Delta
Deal found 2/15![Delta logo]()
$399
This Delta deal was found by Cheapflights users on 2/15. 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.
Sat 2/2810:20 pm
ONT
- HPN
1 stop8h 23m
Delta
Mon 3/912:48 pm
HPN
- ONT
1 stop11h 12m
Delta
Deal found 2/15![Delta logo]()
$409
Last-minute flights from Ontario to Westchester CountyDiscover last-minute flight deals from Ontario to Westchester County. Data last updated February 16, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Westchester County. Data last updated February 16, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 2/13. 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.
Wed 2/1810:20 pm
ONT
- HPN
1 stop8h 23m
Delta
Sun 3/16:00 am
HPN
- ONT
1 stop9h 02m
Delta
Deal found 2/13![Delta logo]()
$448
This Delta deal was found by Cheapflights users on 2/12. 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.
Sat 2/2810:20 pm
ONT
- HPN
1 stop8h 23m
Delta
Tue 3/36:00 am
HPN
- ONT
1 stop9h 02m
Delta
Deal found 2/12![Delta logo]()
$352
This Delta deal was found by Cheapflights users on 2/15. 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.
Sat 2/2810:20 pm
ONT
- HPN
1 stop8h 23m
Delta
Tue 3/106:00 am
HPN
- ONT
1 stop8h 47m
Delta
Deal found 2/15![Delta logo]()
$399
This Delta deal was found by Cheapflights users on 2/15. 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.
Sat 2/2810:20 pm
ONT
- HPN
1 stop8h 23m
Delta
Mon 3/912:48 pm
HPN
- ONT
1 stop11h 12m
Delta
Deal found 2/15![Delta logo]()
$409
This Delta deal was found by Cheapflights users on 2/15. 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.
Sat 2/2810:20 pm
ONT
- HPN
1 stop8h 23m
Delta
Mon 3/26:00 am
HPN
- ONT
1 stop9h 02m
Delta
Deal found 2/15![Delta logo]()
$441
This Delta deal was found by Cheapflights users on 2/14. 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 3/210:20 pm
ONT
- HPN
2 stops10h 36m
Delta
Fri 3/65:12 pm
HPN
- ONT
2 stops9h 37m
Delta
Deal found 2/14![Delta logo]()
$389
This Delta deal was found by Cheapflights users on 2/14. 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.
Thu 3/510:20 pm
ONT
- HPN
1 stop8h 23m
Delta
Mon 3/96:00 am
HPN
- ONT
1 stop8h 47m
Delta
Deal found 2/14![Delta logo]()
$418
This Delta deal was found by Cheapflights users on 2/15. 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.
Sat 3/1410:25 pm
ONT
- HPN
1 stop8h 19m
Delta
Tue 3/173:13 pm
HPN
- ONT
2 stops11h 38m
Delta
Deal found 2/15![Delta logo]()
$433
One-way flights from Ontario to Westchester CountySearch for one-way flight options from Ontario to Westchester County. Find affordable one-way fares based on user searches. Data last updated February 16, 2026.
Search for one-way flight options from Ontario to Westchester County. Find affordable one-way fares based on user searches. Data last updated February 16, 2026.
This Delta deal was found by Cheapflights users on 2/13. 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 3/1010:25 pm
ONT
- HPN
1 stop8h 19m
Delta
Deal found 2/13![Delta logo]()
$159
This Delta deal was found by Cheapflights users on 2/13. 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 4/2110:15 pm
ONT
- HPN
1 stop8h 34m
Delta
Deal found 2/13![Delta logo]()
$161
This Delta deal was found by Cheapflights users on 2/15. 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.
Sat 3/2810:25 pm
ONT
- HPN
1 stop8h 19m
Delta
Deal found 2/15![Delta logo]()
$169
This Delta deal was found by Cheapflights users on 2/13. 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 3/310:20 pm
ONT
- HPN
1 stop8h 23m
Delta
Deal found 2/13![Delta logo]()
$174
This Delta deal was found by Cheapflights users on 2/13. 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.
Sun 3/110:20 pm
ONT
- HPN
1 stop8h 23m
Delta
Deal found 2/13![Delta logo]()
$179
This Delta deal was found by Cheapflights users on 2/12. 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.
Sat 3/1410:25 pm
ONT
- HPN
1 stop8h 19m
Delta
Deal found 2/12![Delta logo]()
$194
This American Airlines deal was found by Cheapflights users on 2/12. 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.
Sun 4/267:35 pm
ONT
- HPN
2 stops12h 52m
American Airlines
Deal found 2/12![American Airlines logo]()
$200
This Delta deal was found by Cheapflights users on 2/14. 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.
Wed 3/2510:25 pm
ONT
- HPN
1 stop8h 19m
Delta
Deal found 2/14![Delta logo]()
$208
This American Airlines deal was found by Cheapflights users on 2/13. 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 2/2710:37 pm
ONT
- HPN
1 stop7h 52m
American Airlines
Deal found 2/13![American Airlines logo]()
$229
This Kiwi.com deal was found by Cheapflights users on 2/12. 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 3/287:31 pm
ONT
- HPN
3 stops36h 57m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$231
Find flight deals from Ontario to Westchester County
Keep the following information in mind while searching for Ontario to Westchester County flight deals. Data was last updated February 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $321 (Delta) |
One-way from | $159 (Delta) |
Popular in | December |
Cheapest in | January |
Average price | $292 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Westchester County 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 16, 2026.
Use the filters below to find and compare flights from Ontario to Westchester County that are best for you.
Fly from
Ontario
Fly to
Westchester County
Route
Depart
Return
Price
OntarioWhite Plains
ONT - HPN
ONTHPN
Ontario
Tue 4/21
10:15 pm-9:49 am
1 stop8h 34m
White Plains Westchester County
Sat 5/2
6:00 am-11:36 am
1 stop8h 36m
$321
OntarioWhite Plains
ONT - HPN
ONTHPN
Ontario
Tue 4/21
4:52 pm-10:30 am
2 stops14h 38m
White Plains Westchester County
Sat 5/2
1:30 pm-10:36 pm
2 stops12h 06m
$348
OntarioWhite Plains
ONT - HPN
ONTHPN
Ontario
Sat 2/28
10:20 pm-9:43 am
1 stop8h 23m
White Plains Westchester County
Tue 3/3
6:00 am-12:02 pm
1 stop9h 02m
$352
OntarioWhite Plains
ONT - HPN
ONTHPN
Ontario
Mon 3/2
10:20 pm-11:56 am
2 stops10h 36m
White Plains Westchester County
Fri 3/6
5:12 pm-11:49 pm
2 stops9h 37m
$389
OntarioWhite Plains
ONT - HPN
ONTHPN
Ontario
Sat 2/28
10:20 pm-9:43 am
1 stop8h 23m
White Plains Westchester County
Tue 3/10
6:00 am-11:47 am
1 stop8h 47m
$399
OntarioWhite Plains
ONT - HPN
ONTHPN
Ontario
Sat 2/28
10:20 pm-9:43 am
1 stop8h 23m
White Plains Westchester County
Mon 3/9
12:48 pm-9:00 pm
1 stop11h 12m
$409
OntarioWhite Plains
ONT - HPN
ONTHPN
Ontario
Tue 3/17
10:25 pm-9:44 am
1 stop8h 19m
$159
OntarioWhite Plains
ONT - HPN
ONTHPN
Ontario
Tue 3/31
10:36 pm-9:29 am
1 stop7h 53m
$159
OntarioWhite Plains
ONT - HPN
ONTHPN
Ontario
Tue 3/10
10:25 pm-9:44 am
1 stop8h 19m
$159
OntarioWhite Plains
ONT - HPN
ONTHPN
Ontario
Tue 3/24
10:25 pm-9:44 am
1 stop8h 19m
$159
Showing 1-10 of 12 results
Best time to book a flight from Ontario to Westchester County
Have a flexible travel schedule? Discover the best time to fly to Westchester County from Ontario with our price prediction graph.
ONT-HPN
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 Westchester County
ONT-zzREU
ONT-HPN
What is the cheapest month to book a flight from Ontario to Westchester County?
Currently, February is the cheapest month in which you can book a flight from Ontario to Westchester County (average of $118). Flying from Ontario to Westchester County in November is currently the most expensive (average of $316). 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.
Reviews of airlines servicing Westchester County
Get insights into the airlines that provide service to Westchester County. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Westchester County. Reviews last updated February 16, 2026.
Read reviews from past customers who have flown Delta from Ontario to Westchester County. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Comfort
7.9
Overall
7.9
Food
7.2
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentLucy,Nov 2023
ATL - JFK
Boarding
8.1
Comfort
7.9
Overall
7.9
Food
7.2
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentLucy,Nov 2023
ATL - JFK
Related info for your journey
Find useful and relevant information for your journey from Ontario to Westchester County. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Ontario to Westchester County
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Complete your trip
Complete your trip to Westchester County by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from Ontario to Westchester County, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Westchester County flights
Browse other Ontario and Westchester County flight options. Last updated on February 16, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Ontario to Westchester County flights
Consider these flights traveling from Ontario to Westchester County.
Top airline flying from Ontario to Westchester County
Discover the top airline that operate flights from Ontario to Westchester County. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$184 | Average$391 | FlexibilityNo cancel fee | On-timeN/A |