How long is the flight from Region of Ontario to Guam?

Departing from Region of Ontario to Guam will take you 25h 45m. There are 12395 km between Region of Ontario and Guam.

In terms of precipitation, rainfall in Guam ranges from 65.0 - 365.0 mm per month. August is typically the wettest month, when rainfall can reach 365.0 mm. March is typically the driest time to visit Guam when rainfall is around 65.0 mm.

If weather is an important factor for your trip to Guam, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 28.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 27.0 C).

What is the cheapest time of day to fly from ON to GU?

When flying from Region of 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.

Can I find deals for flights from Ontario to Guam that include hotel bookings?

Yes. In addition to deals on Ontario to Guam flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Ontario to Guam?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Guam.

Can I find deals for business class flights from Ontario to Guam?

Yes. Cheapflights offers flight deals from Ontario to Guam by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

C$ 3,173+ Cheap Flights from Ontario to Guam

Find flight deals from Ontario to Guam

Enter your travel dates to find the best prices.

Best flights from Ontario to Guam
Discover carefully curated flight deals from Ontario to Guam that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 30 October 2025.

Tue 7/46:00 a.m.YUL - GUM

2 stops25h 45mUnited Airlines

Thu 9/412:25 p.m.GUM - YUL

2 stops42h 22mUnited Airlines

Deal found 28/10C$ 3,173

Cheap flight deals from Ontario to Guam

Round-trip from	C$ 3,173

United Airlines
7/4-9/4
4 total stops
68h 07m total
Ontario to Guam

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

MontrealTamuning

YUL - GUM

YULGUM

Montreal Pierre Elliott Trudeau Intl

Tue 7/4

6:00 a.m.-9:45 p.m.

2 stops25h 45m

Tamuning Guam Intl

Thu 9/4

12:25 p.m.-4:47 p.m.

2 stops42h 22m

C$ 3,173

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/10

Best time to book a flight from Ontario to Guam

Have a flexible travel schedule? Discover the best time to fly to Guam from Ontario with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Guam

No data available for this route at this time. Please check back soon.

Related info for your journey

How long is the flight from Region of Ontario to Guam?
Departing from Region of Ontario to Guam will take you 25h 45m. There are 12395 km between Region of Ontario and Guam.
Can I find deals for flights from Ontario to Guam that include hotel bookings?
Yes. In addition to deals on Ontario to Guam flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to Guam?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Guam.
Can I find deals for business class flights from Ontario to Guam?
Yes. Cheapflights offers flight deals from Ontario to Guam by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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How does Cheapflights help users find flights from Ontario to Guam?

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.

Why should you use Cheapflights to find cheap flight tickets from Ontario to Guam?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Ontario to Guam.

Can Cheapflights find flights from Ontario to Guam with no change fees?

Certainly. Search results for flights to Guam from Ontario shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Ontario to Guam become cheaper?

Not ready to book yet? You can track prices for flights from Ontario to Guam on Cheapflights with our Price Alert feature and get notified when better prices are available.

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Cheap flights from Ontario to Guam from C$ 3,173

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/4. Fares are subject to change and may not be available on all flights or dates of travel.

Find flight deals from Ontario to Guam

Best flights from Ontario to GuamDiscover carefully curated flight deals from Ontario to Guam that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 30 October 2025.

Discover carefully curated flight deals from Ontario to Guam that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 30 October 2025.