When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 49 days in advance, which can save you up to 27% on flights from Ontario to Guam compared to booking the week you need them. Waiting 49 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $1,022. For sooner than that we have options available in the next 3 days from $2,471.
Our data shows that November tends to be the cheapest month to fly to Guam from Ontario. Users have commonly found prices around $1,909 for the month, but tickets can be as low as $944. Due to multiple factors, prepare for potentially higher prices in July.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Guam as you normally would.
Fly from
Fly to
Budget
$1,100 - $4,130
Route
Depart
Return
Price
OntarioTamuning Guam Intl
ONT - GUM
ONTGUM
Ontario
Mon 5/20
2 stops60h 03m
Tamuning Guam Intl
Fri 5/24
2 stops27h 33m
OntarioTamuning Guam Intl
ONT - GUM
ONTGUM
Ontario
Sun 5/19
2 stops44h 00m
Tamuning Guam Intl
Wed 5/22
2 stops46h 27m
OntarioTamuning Guam Intl
ONT - GUM
ONTGUM
Ontario
Mon 5/20
2 stops59h 39m
Tamuning Guam Intl
Fri 5/24
3 stops44h 58m
OntarioTamuning Guam Intl
ONT - GUM
ONTGUM
Ontario
Sat 6/29
2 stops18h 55m
Tamuning Guam Intl
Wed 9/25
2 stops20h 04m
OntarioTamuning Guam Intl
ONT - GUM
ONTGUM
Ontario
Mon 5/13
2 stops19h 15m
Tamuning Guam Intl
Tue 3/4
2 stops20h 24m
OntarioTamuning Guam Intl
ONT - GUM
ONTGUM
Ontario
Mon 5/20
3 stops46h 46m
Tamuning Guam Intl
Fri 5/24
3 stops83h 01m
No data available for this route at this time. Please check back soon.
Comfort
Crew
Entertainment
Food
Boarding
Overall
Reviews
I slept most of the way to Guam. So I didn't have the meal or watch the entertainment.
Comfort
Crew
Entertainment
Food
Boarding
Overall
Reviews
I slept most of the way to Guam. So I didn't have the meal or watch the entertainment.
Cheapflights makes it easy to find Ontario to Guam flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.
Cheapflights simply makes it quick and affordable to book flights from Ontario to Guam by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.
Yes, we can. To see specific flights from Ontario to Guam with no change fees, users can toggle flexible booking options after using the search form above to find flights.
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Guam from Ontario today and book when prices fit your budget.