The cheapest times to fly from ONT to CGK are

  • January 8th to March 4th
  • April 2nd to April 29th
  • August 13th to December 2nd (except the week of November 19th)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from ONT to CGK is mid to late September. Prices can be as high as $1553 for Saturday flights during mid December, or as low as $708 for Tuesday flights around mid to late September.


When to Fly to Jakarta

Flying from Ontario, CA (ONT) to Jakarta (CGK) will usually cost between $711 to $1166 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid to late September with an average ticket price of $740. Due to high demand the most expensive time to fly is mid December, with an average price of $1308. Planning your trip to low-cost times can easily save you $567 on economy flights and even more on first-class flights. Generally, any price below $811 can be considered a good price for a round-trip ONT to CGK flight.

See below for a graph of average weekly prices for the ONT to CGK route. All prices are for round-trip tickets in USD.

ONT to CGK Flight Prices

Compared to other flights, the ONT to CGK flight is cheaper than the average and costs less than the average flight leaving from Ontario. The average price per mile (for a direct flight) is $0.06, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Saturdays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $73 (7%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $826. Return trip prices are from the CGK to ONT flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from ONT to CGK can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 17 hour 13 minutes may not be realistic.


Flight Questions Answered

Still have questions about flying from ONT to CGK? We’ve got answers.

Which airlines fly this route?

You can find 21 major airlines flying this route most often: Air Canada, Alaska, American, ANA, Asiana, Cathay Dragon, Cathay Pacific, China Airlines, China Southern, Delta, Emirates, EVA Air, Garuda Indonesia, JAL, KLM, Qantas, Qatar Airways, Singapore Airlines, Turkish Airlines, United, Virgin Australia, and potentially more during busy seasons.

How far away is it from Soekarno-Hatta International Airport to Ontario International Airport?

The distance between the two airports is roughly 9016 miles or 14510 kilometers.

How long does it take to fly from ONT to CGK?

The real-world flight time for a nonstop ONT to CGK flight is about 17 hour 13 minutes.

How many flights go between Ontario, CA and Jakarta?

It depends on the day of the week and the date, but a typical day might have around 69 available flights from ONT to CGK.


Airport Location Info


Departing Airport

Origination codeONT
Origination airport nameOntario International Airport
CityOntario, CA
Countrythe United States

Return Airport

Destination codeCGK
Destination airport nameSoekarno-Hatta International Airport


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.