To save on the cost of your flight from Ontario to Guam, book at least 53 days before your planned departure. Booking around this time can save you about 8% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $1,681 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $1,880.
The best pricing can be found in the month of September. Prices to Guam from Ontario average $1,644. You can even find prices in September for less than $1,644, as users have found deals to Guam from as low as $565. The month of November appears to be one of the more expensive times to travel to Guam from Ontario. Flying in the targeted month can save you up to 9%.
When flying from Ontario to Guam, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.