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$681+ Cheap flights from Ontario to Watertown, NY (ONT - ART)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ART
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap flight deals from Ontario to Watertown

Cheapest flights from Ontario to Watertown
Explore the most affordable flight options available from Ontario to Watertown. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/211:58 pm
ONT
-
ART
2 stops12h 21m
American Airlines
Mon 4/136:00 am
ART
-
ONT
2 stops15h 24m
American Airlines
Deal found 1/29$681

Find flight deals from Ontario to Watertown

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

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$681
(American Airlines)

Popular in

June

Cheapest in

January

Average price

$267
Provider with most accurate pricing for Ontario-Watertown flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Watertown flights.
Search Deals
From Ontario to Watertown
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($55 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($25 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 Watertown 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 Watertown that are best for you.

Fly from

Ontario

Fly to

Watertown

Route

Depart

Return

Price

OntarioWatertown

ONT - ART

ONTART

Ontario

Thu 4/2

11:58 pm-3:19 pm

2 stops12h 21m

Watertown

Mon 4/13

6:00 am-6:24 pm

2 stops15h 24m

$681

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/29

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

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

What is the cheapest month to book a flight from Ontario to Watertown, New York?

Currently, July is the cheapest month in which you can book a flight from Ontario to Watertown, New York (average of $190). Flying from Ontario to Watertown, New York in December is currently the most expensive (average of $326). 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 Watertown. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Ontario to Watertown, New York?

    A quick flight from Ontario to Watertown, New York can take about 12h 21m. American Airlines provides one of the quickest options available for as low as $681. The distance from Ontario to Watertown, New York is about 2306 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Watertown 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 Watertown, New York?

    Currently, July is the cheapest month in which you can book a flight from Ontario to Watertown, New York (average of $190). Flying from Ontario to Watertown, New York in December is currently the most expensive (average of $326). 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 Watertown?

Book flights to Watertown if you plan to visit one of these locations
Alexandria Bay

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