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Flights from Cheongju to Ontario

Find flight deals from Cheongju to Ontario for the next 3 months. Book one way flights from CAD 782 or round trip flights from CAD 1,420.

      • CJJ 4:10 PM
        17h 40m
        1 stop
        ONT 4:50 PM
        Cheongju - Ontario | Wed, Dec 17 | Aero K Airlines
        ONT 10:40 PM
        30h 30m
        1 stop
        CJJ 10:10 PM
        Ontario - Cheongju | Wed, Dec 24 | China Airlines
        CAD 1,420 CAD 1,887
        25% OFF
        25% OFF
        CAD 1,887 CAD 1,420
      • CJJ 4:10 PM
        17h 40m
        1 stop
        ONT 4:50 PM
        Cheongju - Ontario | Fri, Dec 19 | Aero K Airlines
        ONT 10:40 PM
        30h 30m
        1 stop
        CJJ 10:10 PM
        Ontario - Cheongju | Sat, Dec 27 | China Airlines
        CAD 1,473 CAD 1,887
        22% OFF
        22% OFF
        CAD 1,887 CAD 1,473
      • CJJ 4:10 PM
        17h 40m
        1 stop
        ONT 4:50 PM
        Cheongju - Ontario | Thu, Dec 25 | Aero K Airlines
        ONT 10:50 PM
        30h 20m
        1 stop
        CJJ 10:10 PM
        Ontario - Cheongju | Mon, Dec 29 | China Airlines
        CAD 1,481 CAD 1,887
        22% OFF
        22% OFF
        CAD 1,887 CAD 1,481
      • CJJ 8:45 AM
        25h 5m
        1 stop
        ONT 4:50 PM
        Cheongju - Ontario | Fri, Dec 26 | Aero K Airlines
        ONT 10:50 PM
        23h 10m
        1 stop
        CJJ 3:00 PM
        Ontario - Cheongju | Sat, Jan 3 | China Airlines
        CAD 1,515
        20% OFF
        CAD 1,887 CAD 1,515
      • CJJ 4:10 PM
        17h 40m
        1 stop
        ONT 4:50 PM
        Cheongju - Ontario | Wed, Dec 24 | Aero K Airlines
        ONT 10:50 PM
        30h 20m
        1 stop
        CJJ 10:10 PM
        Ontario - Cheongju | Sun, Dec 28 | China Airlines
        CAD 1,544
        18% OFF
        CAD 1,887 CAD 1,544
      • CJJ 8:45 AM
        25h 5m
        1 stop
        ONT 4:50 PM
        Cheongju - Ontario | Sat, Dec 27 | Aero K Airlines
        ONT 10:50 PM
        23h 10m
        1 stop
        CJJ 3:00 PM
        Ontario - Cheongju | Sat, Jan 3 | China Airlines
        CAD 1,554
        18% OFF
        CAD 1,887 CAD 1,554
      • CJJ 4:10 PM
        17h 40m
        1 stop
        ONT 4:50 PM
        Cheongju - Ontario | Tue, Dec 23 | Aero K Airlines
        ONT 10:50 PM
        30h 20m
        1 stop
        CJJ 10:10 PM
        Ontario - Cheongju | Sun, Dec 28 | China Airlines
        CAD 1,568
        17% OFF
        CAD 1,887 CAD 1,568
      • CJJ 8:45 AM
        25h 5m
        1 stop
        ONT 4:50 PM
        Cheongju - Ontario | Thu, Dec 18 | Aero K Airlines
        ONT 10:40 PM
        23h 20m
        1 stop
        CJJ 3:00 PM
        Ontario - Cheongju | Wed, Dec 24 | China Airlines
        CAD 1,585
        16% OFF
        CAD 1,887 CAD 1,585
      • CJJ 4:10 PM
        17h 40m
        1 stop
        ONT 4:50 PM
        Cheongju - Ontario | Sat, Dec 20 | Aero K Airlines
        ONT 10:40 PM
        30h 30m
        1 stop
        CJJ 10:10 PM
        Ontario - Cheongju | Wed, Dec 24 | China Airlines
        CAD 1,671
        11% OFF
        CAD 1,887 CAD 1,671
      • CJJ 8:45 AM
        25h 5m
        1 stop
        ONT 4:50 PM
        Cheongju - Ontario | Mon, Dec 15 | Aero K Airlines
        ONT 10:40 PM
        23h 20m
        1 stop
        CJJ 3:00 PM
        Ontario - Cheongju | Mon, Dec 22 | China Airlines
        CAD 1,699
        10% OFF
        CAD 1,887 CAD 1,699
      • CJJ 1:00 PM
        17h 25m
        1 stop
        ONT Invalid Date
        Cheongju - Ontario | Sat, Dec 13 | Normal Airline
        ONT 3:00 PM
        6h
        Nonstop
        CJJ 4:00 PM
        Ontario - Cheongju | Mon, Dec 15 | Normal Airline
        Find More Flights
        Find More Flights
      • CJJ 4:10 PM
        17h 40m
        1 stop
        ONT 4:50 PM
        Cheongju - Ontario | Tue, Dec 16 | Aero K Airlines
        CAD 782 CAD 1,011
        23% OFF
        23% OFF
        CAD 1,011 CAD 782
      • CJJ 11:45 PM
        34h 5m
        1 stop
        ONT 4:50 PM
        Cheongju - Ontario | Sun, Dec 14 | Eastar Jet
        CAD 807 CAD 1,011
        20% OFF
        20% OFF
        CAD 1,011 CAD 807
      • CJJ 4:10 PM
        17h 40m
        1 stop
        ONT 4:50 PM
        Cheongju - Ontario | Tue, Feb 3 | Aero K Airlines
        CAD 853 CAD 1,011
        16% OFF
        16% OFF
        CAD 1,011 CAD 853
      • CJJ 11:45 PM
        34h 5m
        1 stop
        ONT 4:50 PM
        Cheongju - Ontario | Wed, Jan 21 | Eastar Jet
        CAD 860
        15% OFF
        CAD 1,011 CAD 860
      • CJJ 11:45 PM
        34h 5m
        1 stop
        ONT 4:50 PM
        Cheongju - Ontario | Wed, Jan 28 | Eastar Jet
        CAD 867
        14% OFF
        CAD 1,011 CAD 867
      • CJJ 11:45 PM
        34h 5m
        1 stop
        ONT 4:50 PM
        Cheongju - Ontario | Tue, Feb 3 | Eastar Jet
        CAD 878
        13% OFF
        CAD 1,011 CAD 878
      • CJJ 4:10 PM
        17h 40m
        1 stop
        ONT 4:50 PM
        Cheongju - Ontario | Wed, Jan 28 | Aero K Airlines
        CAD 881
        13% OFF
        CAD 1,011 CAD 881
      • CJJ 4:10 PM
        17h 40m
        1 stop
        ONT 4:50 PM
        Cheongju - Ontario | Wed, Feb 4 | Aero K Airlines
        CAD 892
        12% OFF
        CAD 1,011 CAD 892
      • CJJ 11:45 PM
        34h 5m
        1 stop
        ONT 4:50 PM
        Cheongju - Ontario | Sat, Jan 24 | Eastar Jet
        CAD 907
        10% OFF
        CAD 1,011 CAD 907
      • CJJ 4:10 PM
        17h 40m
        1 stop
        ONT 4:50 PM
        Cheongju - Ontario | Wed, Jan 21 | Aero K Airlines
        CAD 910
        10% OFF
        CAD 1,011 CAD 910
      • CJJ 1:00 PM
        17h 25m
        1 stop
        ONT Invalid Date
        Cheongju - Ontario | Sat, Dec 13 | Normal Airline
        Find More Flights
        Find More Flights

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

Flight Info | Cheongju to Ontario

The distance between Cheongju and Ontario is approximately 9,651.87 km.

Cheapest one-way flight priceCAD 782
Cheapest round-trip ticket priceCAD 1,420
Flight distance9,651.87 km

When is the cheapest time to fly from Cheongju to Ontario?

The cheapest time for Cheongju to Ontario flights: Jan 11 to Jan 18 — one way flight prices from CAD 647.

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 Cheongju to Ontario, calculated over the upcoming 10 weeks.

Frequently Asked Questions

  • What are the cheapest flights from Cheongju to Ontario (CJJ-ONT)?

    Based on Trip.com data, Aero K Airlines offers one-way fares as low as CAD 782 on Cheapest nonstop routes (e.g. CJJ to ONT on Tue, Dec 16), while Aero K Airlines offers Cheapest nonstop round-trips from CAD 1,420 departing on Wed, Dec 17 and returning on Wed, Dec 24.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Cheongju 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 Cheongju 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 Tue, Dec 16, with one-way flights priced at just CAD 782.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Aero K 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.
  • After crunching the numbers on our December flight calendar, it's currently cheapest to fly from Cheongju to Ontario on December 17, 2025 with Aero K Airlines, with prices starting at CAD 1,419.
  • The time difference between Ontario and Cheongju is 17h.
  • Tickets can only be changed or canceled 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.

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