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

Delta is the most popular carrier 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.

$1,257 Cheap Flights from Guam to Ontario in 2025

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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

7:20 am - 8:33 pmGUM-ONT

30h 13m2 stops

9:36 am - 6:05 pmONT-GUM

39h 29m2 stops

$1,378United Airlines

Find Deal

Wed, Sep 24 - Wed, Oct 1

7:05 am - 10:51 pmGUM-ONT

32h 46m2 stops

6:00 am - 6:50 pmONT-GUM

18h 50m2 stops

$1,428United Airlines

Find Deal

Mon, Oct 27 - Fri, Nov 7

7:05 pm - 10:51 pmGUM-ONT

68h 46m3 stops

6:00 am - 6:50 pmONT-GUM

18h 50m2 stops

$1,431United Airlines

Find Deal

Mon, Oct 27 - Fri, Nov 7

7:20 am - 8:33 pmGUM-ONT

30h 13m2 stops

6:50 pm - 6:05 pmONT-GUM

30h 15m2 stops

$1,435United Airlines

Find Deal

Thu, Sep 18 - Mon, Sep 22

7:20 am - 8:33 pmGUM-ONT

30h 13m2 stops

6:50 pm - 6:05 pmONT-GUM

54h 15m2 stops

$1,459United Airlines

Find Deal

Thu, Sep 18 - Sun, Sep 21

7:20 am - 5:37 pmGUM-ONT

27h 17m2 stops

6:00 am - 6:05 pmONT-GUM

19h 05m2 stops

$1,528United Airlines

Find Deal

Thu, Sep 11 - Thu, Sep 18

1:55 am - 11:42 pmGUM-ONT

38h 47m2 stops

6:00 am - 12:10 amONT-GUM

25h 10m2 stops

$1,542Delta

Find Deal

Wed, Sep 10 - Thu, Sep 18

1:55 am - 10:40 pmGUM-ONT

37h 45m2 stops

6:00 am - 12:10 amONT-GUM

25h 10m2 stops

$1,917Delta

Find Deal

Wed, Sep 17 - Mon, Sep 22

1:55 am - 11:42 pmGUM-ONT

38h 47m2 stops

9:50 am - 12:10 amONT-GUM

45h 20m2 stops

$1,935Delta

Find Deal

Wed, Sep 17 - Sun, Sep 21

United Airlines flights from Guam to Ontario

Our best United Airlines deals on Guam to Ontario flight tickets

United Airlines

Sep 24

GUM7:20 amTamuning Guam Intl

30h 13m

2 stops

ONT8:33 pmOntario

Oct 1

ONT9:36 amOntario

39h 29m

2 stops

GUM6:05 pmTamuning Guam Intl

$1,378

Find similar

United Airlines

Oct 27

GUM7:05 amTamuning Guam Intl

32h 46m

2 stops

ONT10:51 pmOntario

Nov 7

ONT6:00 amOntario

18h 50m

2 stops

GUM6:50 pmTamuning Guam Intl

$1,428

Find similar

United Airlines

Oct 27

GUM7:05 pmTamuning Guam Intl

68h 46m

3 stops

ONT10:51 pmOntario

Nov 7

ONT6:00 amOntario

18h 50m

2 stops

GUM6:50 pmTamuning Guam Intl

$1,431

Find similar

Delta flights from Guam to Ontario

Our best Delta deals on Guam to Ontario flight tickets

Delta

Sep 10

GUM1:55 amTamuning Guam Intl

38h 47m

2 stops

ONT11:42 pmOntario

Sep 18

ONT6:00 amOntario

25h 10m

2 stops

GUM12:10 amTamuning Guam Intl

$1,542

Find similar

Delta

Sep 17

GUM1:55 amTamuning Guam Intl

37h 45m

2 stops

ONT10:40 pmOntario

Sep 22

ONT6:00 amOntario

25h 10m

2 stops

GUM12:10 amTamuning Guam Intl

$1,917

Find similar

Delta

Sep 17

GUM1:55 amTamuning Guam Intl

38h 47m

2 stops

ONT11:42 pmOntario

Sep 21

ONT9:50 amOntario

45h 20m

2 stops

GUM12:10 amTamuning Guam Intl

$1,935

Find similar

Fly from

Fly to

Route

Depart

Return

Price

TamuningOntario

GUM - ONT

GUMONT

Tamuning Guam Intl

Wed 9/24

7:20 am-8:33 pm

2 stops30h 13m

Ontario

Wed 10/1

9:36 am-6:05 pm

2 stops39h 29m

$1,378

TamuningOntario

GUM - ONT

GUMONT

Tamuning Guam Intl

Mon 10/27

7:05 am-10:51 pm

2 stops32h 46m

Ontario

Fri 11/7

6:00 am-6:50 pm

2 stops18h 50m

$1,428

TamuningOntario

GUM - ONT

GUMONT

Tamuning Guam Intl

Mon 10/27

7:05 pm-10:51 pm

3 stops68h 46m

Ontario

Fri 11/7

6:00 am-6:50 pm

2 stops18h 50m

$1,431

TamuningOntario

GUM - ONT

GUMONT

Tamuning Guam Intl

Thu 9/18

7:20 am-8:33 pm

2 stops30h 13m

Ontario

Mon 9/22

6:50 pm-6:05 pm

2 stops30h 15m

$1,435

TamuningOntario

GUM - ONT

GUMONT

Tamuning Guam Intl

Thu 9/18

7:20 am-8:33 pm

2 stops30h 13m

Ontario

Sun 9/21

6:50 pm-6:05 pm

2 stops54h 15m

$1,459

TamuningOntario

GUM - ONT

GUMONT

Tamuning Guam Intl

Thu 9/11

7:20 am-5:37 pm

2 stops27h 17m

Ontario

Thu 9/18

6:00 am-6:05 pm

2 stops19h 05m

$1,528

TamuningOntario

GUM - ONT

GUMONT

Tamuning Guam Intl

Wed 9/10

1:55 am-11:42 pm

2 stops38h 47m

Ontario

Thu 9/18

6:00 am-12:10 am

2 stops25h 10m

$1,542

TamuningOntario

GUM - ONT

GUMONT

Tamuning Guam Intl

Wed 9/17

1:55 am-10:40 pm

2 stops37h 45m

Ontario

Mon 9/22

6:00 am-12:10 am

2 stops25h 10m

$1,917

TamuningOntario

GUM - ONT

GUMONT

Tamuning Guam Intl

Wed 9/17

1:55 am-11:42 pm

2 stops38h 47m

Ontario

Sun 9/21

9:50 am-12:10 am

2 stops45h 20m

$1,935

TamuningOntario

GUM - ONT

GUMONT

Tamuning Guam Intl

Tue 9/2

5:00 pm-10:40 pm

2 stops46h 40m

$1,257

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.