The cheapest times to fly from ONT to HAK are

  • January 29th to May 13th
  • August 20th to September 2nd
  • October 8th to December 2nd

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 HAK is early to mid March. Prices can be as high as $2030 for Sunday flights during mid December, or as low as $718 for Monday flights around early to mid March.


When to Fly to Haikou

Flying from Ontario, CA (ONT) to Haikou (HAK) will usually cost between $882 to $1787 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early to mid March with an average ticket price of $1123. Due to high demand the most expensive time to fly is mid December, with an average price of $1720. Planning your trip to low-cost times can easily save you $597 on economy flights and even more on first-class flights. Generally, any price below $1315 can be considered a good price for a round-trip ONT to HAK flight.

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

ONT to HAK Flight Prices

Compared to other flights, the ONT to HAK flight is slightly more expensive than the average and costs about as much as the average flight leaving from Ontario. The average price per mile (for a direct flight) is $0.11, which is far below average.


Flight Prices by Day of the Week

Monday is usually the cheapest day to depart and return on this flight. Sundays are the most expensive days to fly to Haikou, and Saturdays are the most expensive days to return to Ontario. Selecting flights on the least expensive days could save you up to $672 (38%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Monday and returning a week later will cost an average of $1005. Return trip prices are from the HAK 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 HAK can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 14 hour 34 minutes may not be realistic.


Flight Hacking ONT to HAK

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from ONT to HAK — but Champion Traveler does!

Hack #1: Hong Kong (ONT > HKG > HAK)

  • Price for both tickets: $963
  • Average savings: $352 (26.77%)

See ONT to HKG flights

Hack #2: Bangkok (ONT > BKK > HAK)

  • Price for both tickets: $997
  • Average savings: $318 (24.18%)

See ONT to BKK flights

Hack #3: Los Angeles, CA (ONT > LAX > HAK)

  • Price for both tickets: $1001
  • Average savings: $314 (23.88%)

See ONT to LAX flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 11 major airlines flying this route most often: Alaska, American, Cathay Dragon, Cathay Pacific, China Airlines, China Southern, Delta, EVA Air, Hainan, Shanghai Airlines, United, and potentially more during busy seasons.

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

The distance between the two airports is roughly 7547 miles or 12146 kilometers.

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

The real-world flight time for a nonstop ONT to HAK flight is about 14 hour 34 minutes.

How many flights go between Ontario, CA and Haikou?

It depends on the day of the week and the date, but a typical day might have around 15 available flights from ONT to HAK.


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 HAK
Destination airport name Meilan Airport
City Haikou
Country China
Latitude 19.9
Longitude 110.5


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.