What is the cheapest airline that flies from Guam to Ontario?

Delta and United Airlines are the most popular carriers operating from Guam to Ontario

When did momondo last update prices for flights from Guam to Ontario Airport?

Prices for flights from Guam to Ontario Airport are updated daily.

How old do you have to be to fly from Guam to Ontario Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Guam to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$583 Cheap Flights from Guam to Ontario in 2025/26

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0 bags

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Find the cheapest flights from Guam to Los Angeles

Round-trip

One-way

Recent round-trip flight deals from Guam to Los Angeles

Enter your travel dates to find the best prices.

12:25 pm - 11:06 pmGUM-ONT

27h 41m2 stops

1:33 pm - 6:05 pmONT-GUM

35h 32m2 stops

$1,441United Airlines

Find Deal

jue., abr. 23 - lun., abr. 27

7:20 pm - 10:57 pmGUM-ONT

45h 37m2 stops

1:53 pm - 7:05 pmONT-GUM

59h 12m2 stops

$2,522United Airlines

Find Deal

mié., feb. 18 - sáb., feb. 28

7:40 am - 5:41 pmGUM-ONT

28h 01m2 stops

1:53 pm - 7:05 pmONT-GUM

59h 12m2 stops

$2,534United Airlines

Find Deal

jue., feb. 19 - sáb., feb. 28

United Airlines flights from Guam to Ontario

Our best United Airlines deals on Guam to Ontario flight tickets

United Airlines

Apr 23

GUM12:25 pmTamuning Guam Intl

27h 41m

2 stops

ONT11:06 pmOntario

Apr 27

ONT1:33 pmOntario

35h 32m

2 stops

GUM6:05 pmTamuning Guam Intl

$1,441

Find similar

United Airlines

Feb 18

GUM7:20 pmTamuning Guam Intl

45h 37m

2 stops

ONT10:57 pmOntario

Feb 28

ONT1:53 pmOntario

59h 12m

2 stops

GUM7:05 pmTamuning Guam Intl

$2,522

Find similar

United Airlines

Feb 19

GUM7:40 amTamuning Guam Intl

28h 01m

2 stops

ONT5:41 pmOntario

Feb 28

ONT1:53 pmOntario

59h 12m

2 stops

GUM7:05 pmTamuning Guam Intl

$2,534

Find similar

Fly from

Fly to

Route

Depart

Return

Price

TamuningOntario

GUM - ONT

GUMONT

Tamuning Guam Intl

jue. 4/23

12:25 pm-11:06 pm

2 stops27h 41m

Ontario

lun. 4/27

1:33 pm-6:05 pm

2 stops35h 32m

$1,441

TamuningOntario

GUM - ONT

GUMONT

Tamuning Guam Intl

mié. 2/18

7:20 pm-10:57 pm

2 stops45h 37m

Ontario

sáb. 2/28

1:53 pm-7:05 pm

2 stops59h 12m

$2,522

TamuningOntario

GUM - ONT

GUMONT

Tamuning Guam Intl

jue. 2/19

7:40 am-5:41 pm

2 stops28h 01m

Ontario

sáb. 2/28

1:53 pm-7:05 pm

2 stops59h 12m

$2,534

TamuningOntario

GUM - ONT

GUMONT

Tamuning Guam Intl

lun. 12/1

2:20 am-11:19 am

3 stops50h 59m

$583

TamuningOntario

GUM - ONT

GUMONT

Tamuning Guam Intl

vie. 2/6

5:15 am-11:56 pm

3 stops36h 41m

$675

TamuningOntario

GUM - ONT

GUMONT

Tamuning Guam Intl

jue. 2/5

2:40 am-11:56 pm

3 stops39h 16m

$755

TamuningOntario

GUM - ONT

GUMONT

Tamuning Guam Intl

jue. 2/5

2:40 am-11:56 pm

2 stops39h 16m

$764

TamuningOntario

GUM - ONT

GUMONT

Tamuning Guam Intl

vie. 11/14

1:00 am-11:08 am

2 stops52h 08m

$1,257

TamuningOntario

GUM - ONT

GUMONT

Tamuning Guam Intl

jue. 2/19

7:40 am-5:41 pm

2 stops28h 01m

$1,890

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Guam to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Thursday when prices can be found for as low as $1,390. This is often the case because there is less demand to fly during this day of the week. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Guam to Ontario for around $2,005.

Cheap Guam to Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Guam to Ontario

Direct flights	None

There are no direct flights from Guam to Ontario. There are no popular flight routes from Guam to Ontario.

Search flight deals

When did momondo last update prices for flights from Guam to Ontario Airport?
Prices for flights from Guam to Ontario Airport are updated daily.
How old do you have to be to fly from Guam to Ontario Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Guam to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

Why should I use momondo to find a flight deal from Guam to Ontario?

It is quick and easy to find Guam to Ontario flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ontario that suits you.

Can I find flights from Guam to Ontario with flexible booking policies on momondo?

Flights from Guam to Ontario with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Guam to Ontario?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Guam to Ontario.

I’m not ready to book a flight from Guam to Ontario right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Guam to Ontario now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Ontario and let you know when they change.