When did momondo last update prices for flights from Ontario Airport to Watertown Airport?

Prices for flights from Ontario Airport to Watertown Airport are refreshed on a daily basis.

How old do you have to be to fly from Ontario Airport to Watertown Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Watertown Airport.

What documentation or ID do you need to fly to Watertown Airport?

The required travel and health documents for your Watertown Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Watertown Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$357 Cheap Flights from Ontario to Watertown in 2026

1 adult

0 bags

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Ontario to Watertown

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

ONT

ART

2306 mimulti-stop

ART

ONT

2306 mimulti-stop

Multiple Airlines

momondo Fare Finder

Use the filters below to find and compare flights from Ontario to Watertown, New York that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioWatertown

ONT - ART

ONTART

Ontario

Fri 1/16

6:00 am-9:23 pm

2 stops12h 23m

$577

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Ontario to Watertown, New York

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Ontario to Watertown?

Alaska Airlines is the most popular carrier operating from Ontario to Watertown

What airlines fly to Watertown, New York?

American Airlines, Delta and United Airlines are the top three most popular airlines that fly to Watertown, New York from Ontario according to our data. American Airlines is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Watertown, New York. Keep in mind that there are 6 different airlines that fly to Watertown, New York on a routine basis, so you have a few additional options to choose from.

When to book flights from Ontario to Watertown, New York

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Watertown, New York according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Ontario to Watertown, New York (ONT to ART) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Watertown, New York

Fastest flight time	10h 02m
Direct flights	None

The fastest flight from Ontario to Watertown, New York takes 10h 02m

There are no direct flights from Ontario to Watertown, New York. There are no popular flight routes from Ontario to Watertown, New York.

Search flight deals

How far is Ontario to Watertown by plane?
Ontario and Watertown are 2314.0 mi apart from one another. By plane, this route typically takes 10h 02m.
When did momondo last update prices for flights from Ontario Airport to Watertown Airport?
Prices for flights from Ontario Airport to Watertown Airport are refreshed on a daily basis.
How old do you have to be to fly from Ontario Airport to Watertown Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Watertown Airport.
What documentation or ID do you need to fly to Watertown Airport?
The required travel and health documents for your Watertown Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Watertown Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Alexandria Bay

Clayton

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Watertown?

It is quick and easy to find Ontario to Watertown flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Watertown that suits you.

Can I find flights from Ontario to Watertown with flexible booking policies on momondo?

Flights from Ontario to Watertown with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Ontario to Watertown?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Watertown from Ontario.

I’m not ready to book a flight from Ontario to Watertown right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Watertown from Ontario. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.