The cheapest times to fly from ONT to HIJ are

  • January 8th to May 13th (except the weeks of January 22nd and March 26th)
  • September 10th to September 30th
  • October 15th to December 2nd (except the week of October 22nd)

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 HIJ is early to mid April. Prices can be as high as $1819 for Saturday flights during mid December, or as low as $803 for Tuesday flights around early to mid April.


When to Fly to Hiroshima

Flying from Ontario, CA (ONT) to Hiroshima (HIJ) will usually cost between $822 to $1253 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early to mid April with an average ticket price of $846. Due to high demand the most expensive time to fly is mid December, with an average price of $1371. Planning your trip to low-cost times can easily save you $525 on economy flights and even more on first-class flights. Generally, any price below $973 can be considered a good price for a round-trip ONT to HIJ flight.

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

ONT to HIJ Flight Prices

Compared to other flights, the ONT to HIJ flight is priced close to the average and costs less than the average flight leaving from Ontario. The average price per mile (for a direct flight) is $0.1, 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 $108 (9%) 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 $966. Return trip prices are from the HIJ 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 HIJ can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 11 hour 32 minutes may not be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from ONT to HIJ while comparing.

Destination alternative #1: Kansai International Airport (KIX) in Osaka

  • 132 miles (212 km) away from HIJ
  • Usually 7.87% less expensive than HIJ
  • 1-layover flights available

See ONT to KIX flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 7 major airlines flying this route most often: Air Canada, Alaska, American, ANA, China Airlines, JAL, United, and potentially more during busy seasons.

How far away is it from Hiroshima Airport to Ontario International Airport?

The distance between the two airports is roughly 5865 miles or 9439 kilometers.

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

The real-world flight time for a nonstop ONT to HIJ flight is about 11 hour 32 minutes.

How many flights go between Ontario, CA and Hiroshima?

It depends on the day of the week and the date, but a typical day might have around 13 available flights from ONT to HIJ.


Airport Location Info


Departing Airport

Origination code ONT
Origination airport name Ontario International Airport
City Ontario, CA
Country the United States
Latitude 34.1
Longitude -117.6

Return Airport

Destination code HIJ
Destination airport name Hiroshima Airport
City Hiroshima
Country Japan
Latitude 34.4
Longitude 132.9


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.