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

Departing from Region of Ontario to Guam will take you 42h 35m. There are 12218 km between Region of Ontario and Guam. Both multi-stop and direct flights can be found to your destination and back.

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$ 805+ Cheap Flights from Ontario to Guam

Cheap flight deals from Ontario to Guam

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Ontario to Guam
Explore the most affordable flight options available from Ontario to Guam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 September 2026.

Sun 22/111:10 p.m. -

2 stops59h 35m

Thu 26/117:45 a.m. -

2 stops24h 00m

Deal found 15/9C$ 1,928

Fri 23/106:30 a.m. -

2 stops42h 35m

Sat 31/104:50 p.m. -

2 stops45h 25m

Deal found 18/9C$ 2,120

Sat 21/116:10 p.m. -

2 stops39h 50m

Tue 24/112:40 a.m. -

2 stops34h 17m

Deal found 16/9C$ 2,277

Fri 23/101:30 p.m. -

1 stop24h 05m

Sat 31/105:40 a.m. -

2 stops32h 45m

Deal found 18/9C$ 2,352

Fri 20/1112:30 a.m. -

1 stop36h 30m

Wed 25/115:25 a.m. -

2 stops39h 20m

Deal found 18/9C$ 2,592

Sun 1/116:15 a.m. -

3 stops45h 45m

Thu 5/117:45 a.m. -

2 stops45h 24m

Deal found 18/9C$ 2,629

Find flight deals from Ontario to Guam

Round-trip from	C$ 1,928
One-way from	C$ 805

United Airlines
22/11-26/11
4 total stops
83h 35m total
Ontario to Guam

Search Deals

5/11-31/12
2 total stops
50h 00m total
Ontario to Guam

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MontrealTamuning

YUL Montreal Pierre Elliott Trudeau Intl - GUM Tamuning Guam Intl

YULGUM

Montreal Pierre Elliott Trudeau Intl

Tue 3/11

8:00 a.m.-1:00 a.m.

2 stops50h 00m

Tamuning Guam Intl

Wed 31/12

12:00 a.m.-9:00 a.m.

Nonstop0h 00m

C$ 809

MontrealTamuning

YUL Montreal Pierre Elliott Trudeau Intl - GUM Tamuning Guam Intl

YULGUM

Montreal Pierre Elliott Trudeau Intl

Sat 31/10

8:00 a.m.-2:30 a.m.

2 stops52h 30m

Tamuning Guam Intl

Wed 31/12

12:00 a.m.-9:00 a.m.

Nonstop0h 00m

C$ 809

Quickest round-trip

MontrealTamuning

YUL Montreal Pierre Elliott Trudeau Intl - GUM Tamuning Guam Intl

YULGUM

Montreal Pierre Elliott Trudeau Intl

Thu 5/11

6:45 a.m.-4:30 a.m.

3 stops30h 45m

Tamuning Guam Intl

Wed 31/12

12:00 a.m.-9:00 a.m.

Nonstop0h 00m

C$ 1,237

MontrealTamuning

YUL Montreal Pierre Elliott Trudeau Intl - GUM Tamuning Guam Intl

YULGUM

Montreal Pierre Elliott Trudeau Intl

Sun 1/11

6:45 a.m.-4:30 a.m.

3 stops30h 45m

Tamuning Guam Intl

Wed 31/12

12:00 a.m.-9:00 a.m.

Nonstop0h 00m

C$ 1,348

MontrealTamuning

YUL Montreal Pierre Elliott Trudeau Intl - GUM Tamuning Guam Intl

YULGUM

Montreal Pierre Elliott Trudeau Intl

Fri 4/12

12:41 p.m.-1:00 a.m.

2 stops45h 19m

Tamuning Guam Intl

Wed 31/12

12:00 a.m.-9:00 a.m.

Nonstop0h 00m

C$ 1,513

MontrealTamuning

YUL Montreal Pierre Elliott Trudeau Intl - GUM Tamuning Guam Intl

YULGUM

Montreal Pierre Elliott Trudeau Intl

Mon 2/11

6:00 a.m.-3:05 p.m.

2 stops42h 05m

Tamuning Guam Intl

Wed 31/12

12:00 a.m.-9:00 a.m.

Nonstop0h 00m

C$ 1,514

MontrealTamuning

YUL Montreal Pierre Elliott Trudeau Intl - GUM Tamuning Guam Intl

YULGUM

Montreal Pierre Elliott Trudeau Intl

Sun 22/11

1:10 p.m.-3:45 p.m.

2 stops59h 35m

Tamuning Guam Intl

Thu 26/11

7:45 a.m.-4:45 p.m.

2 stops24h 00m

C$ 1,928

TorontoTamuning

YYZ Toronto Pearson Intl - GUM Tamuning Guam Intl

YYZGUM

Toronto Pearson Intl

Fri 23/10

6:30 a.m.-3:05 p.m.

2 stops42h 35m

Tamuning Guam Intl

Sat 31/10

4:50 p.m.-12:15 a.m.

2 stops45h 25m

C$ 2,120

TorontoTamuning

YYZ Toronto Pearson Intl - GUM Tamuning Guam Intl

YYZGUM

Toronto Pearson Intl

Sat 21/11

6:10 p.m.-1:00 a.m.

2 stops39h 50m

Tamuning Guam Intl

Tue 24/11

2:40 a.m.-9:57 p.m.

2 stops34h 17m

C$ 2,277

TorontoTamuning

YYZ Toronto Pearson Intl - GUM Tamuning Guam Intl

YYZGUM

Toronto Pearson Intl

Tue 5/1

4:15 p.m.-4:00 a.m.

2 stops44h 45m

Tamuning Guam Intl

Sat 16/1

5:25 a.m.-5:45 a.m.

2 stops39h 20m

C$ 2,343

Flights are sorted by cheapest round-trip flights first.

Deals found on 18/9

Showing 1-10 of 14 resultsSorted by cheapest first

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.

YUL-GUM

YYZ-GUM

YOW-GUM

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

CAON-GU0

YUL-GUM

YYZ-GUM

YOW-GUM

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 42h 35m. There are 12218 km between Region of Ontario and Guam. Both multi-stop and direct flights can be found to your destination and back.
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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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$ 805

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 5/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Ontario to Guam

Cheapest flights from Ontario to GuamExplore the most affordable flight options available from Ontario to Guam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 September 2026.

Explore the most affordable flight options available from Ontario to Guam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 September 2026.

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 19 September 2026.

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 19 September 2026.

Last-minute flights from Ontario to GuamDiscover last-minute flight deals from Ontario to Guam. Data last updated 19 September 2026 and is based on user searches.

Discover last-minute flight deals from Ontario to Guam. Data last updated 19 September 2026 and is based on user searches.

One-way flights from Ontario to GuamSearch for one-way flight options from Ontario to Guam. Find affordable one-way fares based on user searches. Data last updated 19 September 2026.

Search for one-way flight options from Ontario to Guam. Find affordable one-way fares based on user searches. Data last updated 19 September 2026.

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Use the filters below to find and compare flights from Ontario to Guam that are best for you.

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.

Cheapflights Insights

Related info for your journey

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

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

How can I find direct flights from Ontario to Guam?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Guam

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Complete your trip

Complete your trip to Guam by adding a car rental and/or hotel reservation to your travel itinerary.

Direct flights to

Book a non-stop flight to one of these other cities located in .

Search flights from Ontario to Guam by cabin class

Find flights from Ontario to Guam, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Ontario and Guam flights

Browse other Ontario and Guam flight options. Last updated on 19 September 2026.

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Ontario to Guam flights

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

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

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

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Cheapest flights from Ontario to Guam
Explore the most affordable flight options available from Ontario to Guam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 September 2026.

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 19 September 2026.

Last-minute flights from Ontario to Guam
Discover last-minute flight deals from Ontario to Guam. Data last updated 19 September 2026 and is based on user searches.

One-way flights from Ontario to Guam
Search for one-way flight options from Ontario to Guam. Find affordable one-way fares based on user searches. Data last updated 19 September 2026.