Trip.com
>
Cheap Flights
>
United States
>
California
>
Ontario
Hotels in Ontario
>
Flights from Gillette to Ontario

Find the cheapest flight options from Gillette to Ontario over the next three months. Book one-way tickets from CAD 411 and round-trip tickets from CAD 609.

      • GCC 14:15
        7h 27m
        1 stop
        ONT 20:42
        Gillette - Ontario | Tue, Dec 16 | United Airlines
        ONT 13:40
        7h 46m
        1 stop
        GCC 22:26
        Ontario - Gillette | Sat, Dec 20 | United Airlines
        CAD 609 CAD 1,070
        43% OFF
        43% OFF
        CAD 1,070 CAD 609
      • GCC 14:15
        7h 27m
        1 stop
        ONT 20:42
        Gillette - Ontario | Sat, Dec 13 | United Airlines
        ONT 05:05
        7h 32m
        1 stop
        GCC 13:37
        Ontario - Gillette | Wed, Dec 17 | United Airlines
        CAD 610 CAD 1,070
        43% OFF
        43% OFF
        CAD 1,070 CAD 610
      • GCC 14:15
        7h 27m
        1 stop
        ONT 20:42
        Gillette - Ontario | Wed, Dec 10 | United Airlines
        ONT 13:34
        7h 52m
        1 stop
        GCC 22:26
        Ontario - Gillette | Sun, Dec 14 | United Airlines
        CAD 630 CAD 1,070
        41% OFF
        41% OFF
        CAD 1,070 CAD 630
      • GCC 14:15
        7h 27m
        1 stop
        ONT 20:42
        Gillette - Ontario | Wed, Dec 17 | United Airlines
        ONT 05:05
        7h 32m
        1 stop
        GCC 13:37
        Ontario - Gillette | Sun, Dec 21 | United Airlines
        CAD 671
        37% OFF
        CAD 1,070 CAD 671
      • GCC 14:15
        7h 27m
        1 stop
        ONT 20:42
        Gillette - Ontario | Fri, Dec 12 | United Airlines
        ONT 05:05
        7h 32m
        1 stop
        GCC 13:37
        Ontario - Gillette | Tue, Dec 16 | United Airlines
        CAD 696
        35% OFF
        CAD 1,070 CAD 696
      • GCC 14:12
        7h 55m
        1 stop
        ONT 21:07
        Gillette - Ontario | Sat, Dec 20 | United Airlines
        ONT 05:05
        7h 32m
        1 stop
        GCC 13:37
        Ontario - Gillette | Wed, Dec 24 | United Airlines
        CAD 774
        28% OFF
        CAD 1,070 CAD 774
      • GCC 14:12
        7h 55m
        1 stop
        ONT 21:07
        Gillette - Ontario | Mon, Dec 22 | United Airlines
        ONT 13:40
        7h 46m
        1 stop
        GCC 22:26
        Ontario - Gillette | Fri, Dec 26 | United Airlines
        CAD 816
        24% OFF
        CAD 1,070 CAD 816
      • GCC 14:12
        7h 55m
        1 stop
        ONT 21:07
        Gillette - Ontario | Thu, Dec 18 | United Airlines
        ONT 13:40
        7h 46m
        1 stop
        GCC 22:26
        Ontario - Gillette | Mon, Dec 22 | United Airlines
        CAD 836
        22% OFF
        CAD 1,070 CAD 836
      • GCC 14:15
        7h 27m
        1 stop
        ONT 20:42
        Gillette - Ontario | Mon, Dec 15 | United Airlines
        ONT 05:05
        7h 32m
        1 stop
        GCC 13:37
        Ontario - Gillette | Fri, Dec 19 | United Airlines
        CAD 952
        11% OFF
        CAD 1,070 CAD 952
      • GCC 13:00
        17h 25m
        1 stop
        ONT Invalid Date
        Gillette - Ontario | Fri, Dec 12 | Normal Airline
        ONT 15:00
        6h
        Direct
        GCC 16:00
        Ontario - Gillette | Sun, Dec 14 | Normal Airline
        Find More Flights
        Find More Flights

Displayed flight fares from Gillette to Ontario are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Flight details for Gillette to Ontario

The distance between Gillette and Ontario is 1,544.64km. The off-season for travel is April.

Cheapest one-way flight priceCAD 411
Cheapest return ticket priceCAD 609
Off-season travel monthApril
Flight distance1,544.64km

Find the best time to fly from Gillette to Ontario

The cheapest time for Gillette to Ontario flights: Dec 7 to Dec 14 — one way flight prices from CAD 410.

Cheapest flights
From price
Search
  • 714
  • 1421
  • 2128

  • Jan

    284
  • 411
  • 1118
  • 1825

  • Feb

    251
  • 18
  • 815
  • 1522

  • Mar

    221
Displayed fare trends are based on Trip.com's aggregated average of the lowest flight prices from Gillette to Ontario, calculated over the upcoming 10 weeks.

Flight FAQs

  • Which airlines offer the cheapest flights from Gillette (GCC) to Ontario (ONT)?

    Based on Trip.com data, United Airlines offers one-way fares as low as CAD 411 on Cheapest nonstop routes (e.g. GCC to ONT on Fri, Dec 12), while United Airlines offers Cheapest nonstop round-trips from CAD 609 departing on Tue, Dec 16 and returning on Sat, Dec 20.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Gillette to Ontario is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from Gillette to Ontario, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Fri, Dec 12, with one-way flights priced at just CAD 411.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is United Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Gillette to Ontario is April, when demand for travel is lower.
  • After crunching the numbers on our December flight calendar, it's currently cheapest to fly from Gillette to Ontario on December 16, 2025 with United Airlines, with prices starting at CAD 608.
  • The time difference between Ontario and Gillette is 1h.
  • Tickets can only be changed or cancelled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

Explore More Popular Flights