App
Customer Support
NZD
Find Bookings
Trip.com
>
Cheap Flights
>
United States
>
Watertown
>
Flights from Ontario to Watertown
Worldwide Coverage
Worldwide Coverage
Flights to over 5,000 cities
One-stop Service Guarantee
One-stop Service Guarantee
Price guaranteed upon confirmed payment, booking guaranteed once tickets issued
Secure Payment
Secure Payment
Convenient & reliable booking and payment system

Flights from Ontario to Watertown Starting at NZD 551

We've found these cheap flights for you. You can book one-way or return flight tickets.

  • One way
  • Round-trip
      • ONT11:33
        32h 19m
        2 stops
        ART22:52
        Wed, Feb 5|Ontario - Watertown|Alaska Airlines
        NZD 551NZD 1,155
        52% OFF
        52% OFF
        NZD 1,155NZD 551

        Choose Alaska Airlines flights from Ontario to Watertown. The one-way connecting flight with Alaska Airlines departs from Ontario International Airport on Wed, Feb 5, arriving at Watertown International Airport. One-way Prices start from NZD 551 including taxes and charges.

      • ONT16:05
        27h 47m
        2 stops
        ART22:52
        Wed, Feb 5|Ontario - Watertown|Delta Air Lines
        NZD 557NZD 1,155
        52% OFF
        52% OFF
        NZD 1,155NZD 557

        Choose Delta Air Lines flights from Ontario to Watertown. The one-way connecting flight with Delta Air Lines departs from Ontario International Airport on Wed, Feb 5, arriving at Watertown International Airport. One-way Prices start from NZD 557 including taxes and charges.

      • ONT06:13
        13h 34m
        2 stops
        ART22:47
        Wed, Feb 19|Ontario - Watertown|American Airlines
        NZD 589NZD 1,155
        49% OFF
        49% OFF
        NZD 1,155NZD 589

        Choose American Airlines flights from Ontario to Watertown. The one-way connecting flight with American Airlines departs from Ontario International Airport on Wed, Feb 19, arriving at Watertown International Airport. One-way Prices start from NZD 589 including taxes and charges.

      • ONT16:06
        25h 22m
        2 stops
        ART20:28
        Tue, Feb 4|Ontario - Watertown|Alaska Airlines
        NZD 641
        NZD 641

        Choose Alaska Airlines flights from Ontario to Watertown. The one-way connecting flight with Alaska Airlines departs from Ontario International Airport on Tue, Feb 4, arriving at Watertown International Airport. One-way Prices start from NZD 641 including taxes and charges.

      • ONT07:00
        10h 28m
        2 stops
        ART20:28
        Tue, Feb 11|Ontario - Watertown|American Airlines
        NZD 877
        NZD 877

        Choose American Airlines flights from Ontario to Watertown. The one-way connecting flight with American Airlines departs from Ontario International Airport on Tue, Feb 11, arriving at Watertown International Airport. One-way Prices start from NZD 877 including taxes and charges.

      • ONT10:00
        9h 52m
        2 stops
        ART22:52
        Mon, Feb 10|Ontario - Watertown|American Airlines
        NZD 970
        NZD 970

        Choose American Airlines flights from Ontario to Watertown. The one-way connecting flight with American Airlines departs from Ontario International Airport on Mon, Feb 10, arriving at Watertown International Airport. One-way Prices start from NZD 970 including taxes and charges.

      • ONT01:00 pm
        3h 5m
        Nonstop
        ART02:00 pm
        Tue, Feb 4|Ontario - Watertown|Alaska Airlines
        Find More Flights
        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Los Angeles to Watertown flight time & flight schedules

Flight info.
Departure
Arrival
Weekly Schedule

  1. UA2317

    United Airlines

    05:10

    ONT

    2.3h

    08:29

    DEN

    SMTWTFS
    Search

  2. UA1575

    United Airlines

    10:15

    DEN

    3.6h

    15:51

    PHL

    SMTWTFS

  3. AA5833

    American Airlines

    20:45

    PHL

    1.4h

    22:11

    ART

    S--WT-S

  4. UA2317

    United Airlines

    05:10

    ONT

    2.3h

    08:29

    DEN

    SMTWTFS
    Search

  5. UA1575

    United Airlines

    10:15

    DEN

    3.6h

    15:51

    PHL

    SMTWTFS

  6. AA5685

    American Airlines

    18:56

    PHL

    1.5h

    20:28

    ART

    -MT--F-

  7. AA1412

    American Airlines

    07:00

    ONT

    3.0h

    12:02

    DFW

    SMTWTFS
    Search

  8. AA1662

    American Airlines

    13:00

    DFW

    3.0h

    17:01

    PHL

    SMTWTFS

  9. AA5685

    American Airlines

    18:56

    PHL

    1.5h

    20:28

    ART

    -MT--F-

  10. AA4890

    American Airlines

    10:25

    ONT

    1.4h

    12:50

    PHX

    SMTWTFS
    Search

  11. AA1417

    American Airlines

    13:38

    PHX

    4.4h

    20:02

    PHL

    SMTWTFS

  12. AA5833

    American Airlines

    20:45

    PHL

    1.4h

    22:11

    ART

    S--WT-S

  13. AS1255

    Alaska Airlines

    11:33

    ONT

    2.9h

    14:24

    SEA

    SMTWTFS
    Search

  14. AS442

    Alaska Airlines

    09:37

    SEA

    5.3h

    17:53

    PHL

    SMTWTFS

  15. AS6241

    Alaska Airlines

    21:25

    PHL

    1.5h

    22:54

    ART

    SMTWT-S

  16. AS1119

    Alaska Airlines

    16:29

    ONT

    2.7h

    19:10

    SEA

    SMTWTFS
    Search

  17. AS442

    Alaska Airlines

    09:37

    SEA

    5.3h

    17:53

    PHL

    SMTWTFS

  18. AS6241

    Alaska Airlines

    21:25

    PHL

    1.5h

    22:54

    ART

    SMTWT-S

  19. DL4031

    Delta Air Lines

    17:15

    ONT

    2.9h

    20:09

    SEA

    SMTWTFS
    Search

  20. AS442

    Alaska Airlines

    09:37

    SEA

    5.3h

    17:53

    PHL

    SMTWTFS

  21. AS6241

    Alaska Airlines

    21:25

    PHL

    1.5h

    22:54

    ART

    SMTWT-S
Find more flights and airlines

Find the best time to fly from Ontario to Watertown

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

FAQ

  • When are flight tickets from Ontario (ONT) to Watertown (ART) the cheapest?

    Airlines adjust prices for flights from Ontario to Watertown based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much do flights from Ontario (ONT) to Watertown (ART) cost?

    According to Trip.com's data, the lowest price is around NZD 839.

How to find a cheap flight from Ontario to Watertown

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Ontario to Watertown. Book your flights at the right time and save more.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com

Flight Information from Ontario to Watertown

Off-season for travelNovember
Flight distance8,894.72 km
Popular airlineAmerican Airlines

Contact Us

About

Other Services

Payment Methods
Our Partners
Copyright © 2025 Trip.com Travel Singapore Pte. Ltd. All rights reserved
Site Operator: Trip.com Travel Singapore Pte. Ltd.