Cheap flights from Ontario (ONT) to Guam

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How to find the cheapest flight from
Ontario (ONT) to Guam

All the information you need to plan the best ONT to GUM flight in 2021: compare Ontario to Guam flight prices with the expected peak season, weather and rainfall in Guam.
How far in advance should I book a flight from Ontario to Guam?

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.

What is the cheapest month to fly from Ontario to Guam?

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 is the cheapest time to fly from Ontario to Guam (ONT - GU0)?

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.

Cheap flights from Ontario to Guam in September, October 2021

The best prices found for ONT to Guam flights for September, October
6 Oct - 21 Oct
$1,860pp
ONT
Ontario
United Airlines
   
2 STOPS
GUM
Tamuning Guam Intl
GUM
Tamuning Guam Intl
United Airlines
   
2 STOPS
ONT
Ontario
6 Oct - 21 Oct
$2,110pp
ONT
Ontario
Multiple Airlines
 
1 STOP
GUM
Tamuning Guam Intl
GUM
Tamuning Guam Intl
United Airlines
   
2 STOPS
ONT
Ontario
25 Sep - 2 Oct
$2,133pp
ONT
Ontario
United Airlines
   
2 STOPS
GUM
Tamuning Guam Intl
GUM
Tamuning Guam Intl
United Airlines
   
2 STOPS
ONT
Ontario

Ontario to Guam 2021 flight deals

Cheap flights to Guam from Ontario found for this year
12 Nov - 16 Nov
$730pp
ONT
Ontario
United Airlines
   
2 STOPS
GUM
Tamuning Guam Intl
GUM
Tamuning Guam Intl
United Airlines
   
2 STOPS
ONT
Ontario
21 Dec - 24 Dec
$1,074pp
ONT
Ontario
United Airlines
   
2 STOPS
GUM
Tamuning Guam Intl
GUM
Tamuning Guam Intl
United Airlines
   
2 STOPS
ONT
Ontario
21 Dec - 24 Dec
$1,075pp
ONT
Ontario
United Airlines
   
2 STOPS
GUM
Tamuning Guam Intl
GUM
Tamuning Guam Intl
United Airlines
   
2 STOPS
ONT
Ontario

Last minute flights from Ontario to Guam

Late deals on round-trip flights to Guam from Ontario, departing today and this week
25 Sep - 2 Oct
$2,133pp
ONT
Ontario
United Airlines
   
2 STOPS
GUM
Tamuning Guam Intl
GUM
Tamuning Guam Intl
United Airlines
   
2 STOPS
ONT
Ontario
25 Sep - 2 Oct
$2,450pp
ONT
Ontario
Multiple Airlines
 
1 STOP
GUM
Tamuning Guam Intl
GUM
Tamuning Guam Intl
United Airlines
   
2 STOPS
ONT
Ontario

One-way flights to Guam from Ontario

The cheapest one-way flights from Ontario to Guam
3:40 am - 9:15 am
Hawaiian Airlines
2 Stops
59h 35m
ONT - GUM
Hawaiian Airlines
$933
Hawaiian Airlines
2:23 am - 2:05 pm
United Airlines
2 Stops
18h 42m
ONT - GUM
United Airlines
$1,453
United
4:35 am - 2:00 pm
Multiple Airlines
1 Stop
16h 25m
ONT - GUM
Multiple Airlines
$2,322
United

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Ontario</span> to <span class="emphasized">Guam</span> flights.

Flight FAQs

From Ontario to Guam

What airport do you fly from for flights from Ontario to Guam?

Most people fly from Ontario (ONT) if they book a flight from Ontario to Guam. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

Which airlines flying from Ontario to Guam have flexible changes due to COVID-19?

United Airlines is one of the carriers that may have flexible change policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Are flight prices decreasing from Ontario to Guam due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Ontario and Guam for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Can I find flights from Ontario to Guam for under $800 on Cheapflights?

Yes, there are multiple flights from Ontario to Guam for under $800. The cheapest flight booked recently is on United Airlines for just $730, but on average you can expect to pay $1,987.

Are there last-minute flights available from Ontario to Guam for under $2,200?

There are currently 2+ open flights from Ontario to Guam within the next 7 days for less than $2,200.

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COVID Restrictions

View COVID Travel Restrictions for Guam

Do I need a COVID test to fly to Guam from Ontario?

Information is based on travel restrictions from Ontario to Guam

Most visitors from Ontario need to provide a negative COVID-19 test result and/or quarantine to enter Guam.

COVID-19 testing requirements
Visitors from Ontario are not required to present a negative COVID-19 PCR test or antigen result upon entering Guam.

Quarantine requirements
Visitors from Ontario are not required to quarantine after entering Guam.

Do I need a test to fly back to Ontario from Guam?

Returning to Ontario from Guam

COVID-19 testing requirements
Visitors from Guam must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Ontario.

Quarantine requirements
Visitors from Guam are not required to quarantine after entering Ontario.

Hide COVID Travel Restrictions for Guam

Destination information for Guam

Things to know before you go - useful duration and weather info for your trip from Ontario to Guam.
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Airports servicing Ontario

Airports servicing

Tamuning Guam Intl (GUM)
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