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

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

What airlines fly to Tamuning?

United Airlines, Singapore Airlines and Delta are the top three most popular airlines that fly to Tamuning from Ontario according to our data. United Airlines is the first choice among our users, with 89% of people opting to fly with this airline when traveling to Tamuning. Keep in mind that there are 3 different airlines that fly to Tamuning on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Ontario Airport to Tamuning Guam Intl Airport were last updated today.

How many operators does momondo search for flights from Ontario Airport to Tamuning Guam Intl Airport?

As of October 2025, there is 1 operator available to choose from for flights from Ontario Airport to Tamuning Guam Intl Airport.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Tamuning Guam Intl Airport.

What documentation or ID do you need to fly to Tamuning Guam Intl Airport?

The necessary travel and health documents for your Tamuning Guam Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$958 Cheap Flights from Ontario to Tamuning in 2025/26

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7:35 am - 11:05 pmONT-GUM

21h 30m2 stops

1:00 am - 11:58 pmGUM-ONT

40h 58m2 stops

$1,853Delta

Find Deal

Thu, Nov 6 - Mon, Dec 1

6:00 am - 7:05 pmONT-GUM

19h 05m2 stops

7:40 am - 12:38 pmGUM-ONT

22h 58m2 stops

$1,868United Airlines

Find Deal

Wed, Feb 25 - Wed, Mar 4

7:35 am - 11:05 pmONT-GUM

21h 30m2 stops

1:00 am - 10:47 pmGUM-ONT

39h 47m2 stops

$1,903Delta

Find Deal

Fri, Nov 7 - Mon, Dec 1

7:35 am - 11:05 pmONT-GUM

21h 30m2 stops

1:00 am - 10:55 pmGUM-ONT

39h 55m2 stops

$1,953Delta

Find Deal

Fri, Nov 7 - Fri, Nov 28

6:00 am - 7:05 pmONT-GUM

19h 05m2 stops

7:40 am - 12:38 pmGUM-ONT

22h 58m2 stops

$1,968United Airlines

Find Deal

Fri, Feb 13 - Sun, Feb 22

6:00 am - 7:05 pmONT-GUM

19h 05m2 stops

12:30 pm - 12:14 pmGUM-ONT

17h 44m2 stops

$1,995United Airlines

Find Deal

Fri, Jan 16 - Sat, Jan 24

6:00 am - 6:50 pmONT-GUM

18h 50m2 stops

7:40 am - 12:33 pmGUM-ONT

22h 53m2 stops

$2,178United Airlines

Find Deal

Wed, Nov 19 - Wed, Nov 26

7:35 am - 11:05 pmONT-GUM

21h 30m2 stops

1:00 am - 10:55 pmGUM-ONT

39h 55m2 stops

$2,203Delta

Find Deal

Thu, Nov 6 - Sat, Nov 29

6:00 am - 6:50 pmONT-GUM

18h 50m2 stops

7:40 am - 12:33 pmGUM-ONT

22h 53m2 stops

$2,228United Airlines

Find Deal

Mon, Nov 24 - Fri, Nov 28

7:35 am - 11:05 pmONT-GUM

21h 30m2 stops

1:00 am - 10:55 pmGUM-ONT

39h 55m2 stops

$2,253Delta

Find Deal

Fri, Nov 7 - Sat, Nov 29

United Airlines flights from Ontario to Tamuning

Our best United Airlines deals on Ontario to Tamuning flight tickets

United Airlines

Feb 25

ONT6:00 amOntario

19h 05m

2 stops

GUM7:05 pmTamuning Guam Intl

Mar 4

GUM7:40 amTamuning Guam Intl

22h 58m

2 stops

ONT12:38 pmOntario

$1,868

Find similar

United Airlines

Feb 13

ONT6:00 amOntario

19h 05m

2 stops

GUM7:05 pmTamuning Guam Intl

Feb 22

GUM7:40 amTamuning Guam Intl

22h 58m

2 stops

ONT12:38 pmOntario

$1,968

Find similar

United Airlines

Jan 16

ONT6:00 amOntario

19h 05m

2 stops

GUM7:05 pmTamuning Guam Intl

Jan 24

GUM12:30 pmTamuning Guam Intl

17h 44m

2 stops

ONT12:14 pmOntario

$1,995

Find similar

Delta flights from Ontario to Tamuning

Our best Delta deals on Ontario to Tamuning flight tickets

Delta

Nov 6

ONT7:35 amOntario

21h 30m

2 stops

GUM11:05 pmTamuning Guam Intl

Dec 1

GUM1:00 amTamuning Guam Intl

40h 58m

2 stops

ONT11:58 pmOntario

$1,853

Find similar

Delta

Nov 7

ONT7:35 amOntario

21h 30m

2 stops

GUM11:05 pmTamuning Guam Intl

Dec 1

GUM1:00 amTamuning Guam Intl

39h 47m

2 stops

ONT10:47 pmOntario

$1,903

Find similar

Delta

Nov 7

ONT7:35 amOntario

21h 30m

2 stops

GUM11:05 pmTamuning Guam Intl

Nov 28

GUM1:00 amTamuning Guam Intl

39h 55m

2 stops

ONT10:55 pmOntario

$1,953

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioTamuning

ONT - GUM

ONTGUM

Ontario

Thu 11/6

7:35 am-11:05 pm

2 stops21h 30m

Tamuning Guam Intl

Mon 12/1

1:00 am-11:58 pm

2 stops40h 58m

$1,853

OntarioTamuning

ONT - GUM

ONTGUM

Ontario

Wed 2/25

6:00 am-7:05 pm

2 stops19h 05m

Tamuning Guam Intl

Wed 3/4

7:40 am-12:38 pm

2 stops22h 58m

$1,868

OntarioTamuning

ONT - GUM

ONTGUM

Ontario

Fri 11/7

7:35 am-11:05 pm

2 stops21h 30m

Tamuning Guam Intl

Mon 12/1

1:00 am-10:47 pm

2 stops39h 47m

$1,903

OntarioTamuning

ONT - GUM

ONTGUM

Ontario

Fri 11/7

7:35 am-11:05 pm

2 stops21h 30m

Tamuning Guam Intl

Fri 11/28

1:00 am-10:55 pm

2 stops39h 55m

$1,953

OntarioTamuning

ONT - GUM

ONTGUM

Ontario

Fri 2/13

6:00 am-7:05 pm

2 stops19h 05m

Tamuning Guam Intl

Sun 2/22

7:40 am-12:38 pm

2 stops22h 58m

$1,968

OntarioTamuning

ONT - GUM

ONTGUM

Ontario

Fri 1/16

6:00 am-7:05 pm

2 stops19h 05m

Tamuning Guam Intl

Sat 1/24

12:30 pm-12:14 pm

2 stops17h 44m

$1,995

OntarioTamuning

ONT - GUM

ONTGUM

Ontario

Wed 11/19

6:00 am-6:50 pm

2 stops18h 50m

Tamuning Guam Intl

Wed 11/26

7:40 am-12:33 pm

2 stops22h 53m

$2,178

OntarioTamuning

ONT - GUM

ONTGUM

Ontario

Thu 11/6

7:35 am-11:05 pm

2 stops21h 30m

Tamuning Guam Intl

Sat 11/29

1:00 am-10:55 pm

2 stops39h 55m

$2,203

OntarioTamuning

ONT - GUM

ONTGUM

Ontario

Mon 11/24

6:00 am-6:50 pm

2 stops18h 50m

Tamuning Guam Intl

Fri 11/28

7:40 am-12:33 pm

2 stops22h 53m

$2,228

OntarioTamuning

ONT - GUM

ONTGUM

Ontario

Fri 11/7

7:35 am-11:05 pm

2 stops21h 30m

Tamuning Guam Intl

Sat 11/29

1:00 am-10:55 pm

2 stops39h 55m

$2,253

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Showing 1-10 of 18 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to Tamuning

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 Tamuning?

The cheapest day to depart from Ontario to Tamuning is on a Wednesday. Travelers who choose to depart for Tamuning on a Wednesday will often find tickets for as low as $1,866. The most expensive day to fly to Tamuning is Saturday, with ticket prices averaging around $2,067.

What is the cheapest time of day to depart on your flight to Tamuning?

Our most recent data shows that the best time of day to fly to Tamuning is at noon. Flights from Ontario to Tamuning during this time can be as low as $672. Flights in the morning are often more expensive with an average ticket price of $1,985.

When to book flights from Ontario to Tamuning

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Tamuning according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Ontario to Tamuning (ONT to GUM) flight deals and tips

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

Direct flights	None

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

Search flight deals

How far is Ontario to Tamuning Guam Intl by plane?
Ontario and Tamuning Guam Intl are 6117.0 mi apart from one another. Typically, this will take 18h 50m by plane in normal conditions.
When did momondo last update prices for flights from Ontario Airport to Tamuning Guam Intl Airport?
Prices for flights from Ontario Airport to Tamuning Guam Intl Airport were last updated today.
How many operators does momondo search for flights from Ontario Airport to Tamuning Guam Intl Airport?
As of October 2025, there is 1 operator available to choose from for flights from Ontario Airport to Tamuning Guam Intl Airport.
How old do you have to be to fly from Ontario Airport to Tamuning Guam Intl Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Tamuning Guam Intl Airport.
What documentation or ID do you need to fly to Tamuning Guam Intl Airport?
The necessary travel and health documents for your Tamuning Guam Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Ontario to Tamuning?
momondo data reveals that the most frequently booked airline on the route from Ontario to Tamuning is United Airlines, representing 100% of all bookings.

Best airlines flying from Ontario to Tamuning

Compare and see reviews for airlines that fly from Ontario to Tamuning with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $1,867	Free Cancellation	Rating 7.4 8,990 reviews		Search United Airlines flights

Why use momondo?

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

It is quick and easy to find Ontario to Tamuning 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 Tamuning that suits you.

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

Flights from Ontario to Tamuning 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 Ontario to Tamuning?

Once you have performed a search for Ontario to Tamuning flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to Tamuning from Ontario are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Tamuning trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Fly your favorite airline to Tamuning

Cheap flights from Ontario to Tamuning from $958

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Tamuning departing on 2/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Ontario to Tamuning

Cheap round-trip flights

Cheap one-way flights

United Airlines flights from Ontario to Tamuning

Our best United Airlines deals on Ontario to Tamuning flight tickets

Delta flights from Ontario to Tamuning

Our best Delta deals on Ontario to Tamuning flight tickets

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

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How to get the cheapest flight ticket from Ontario to Tamuning

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

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

The cheapest day to depart from Ontario to Tamuning is on a Wednesday. Travelers who choose to depart for Tamuning on a Wednesday will often find tickets for as low as $1,866. The most expensive day to fly to Tamuning is Saturday, with ticket prices averaging around $2,067.

What is the cheapest time of day to depart on your flight to Tamuning?

Our most recent data shows that the best time of day to fly to Tamuning is at noon. Flights from Ontario to Tamuning during this time can be as low as $672. Flights in the morning are often more expensive with an average ticket price of $1,985.

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

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

What airlines fly to Tamuning?

When to book flights from Ontario to Tamuning

Cheap Ontario to Tamuning (ONT to GUM) flight deals and tips

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

Direct flights

How far is Ontario to Tamuning Guam Intl by plane?

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

How many operators does momondo search for flights from Ontario Airport to Tamuning Guam Intl Airport?

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

What documentation or ID do you need to fly to Tamuning Guam Intl Airport?

What is the most popular airline from Ontario to Tamuning?

Best airlines flying from Ontario to Tamuning

Compare and see reviews for airlines that fly from Ontario to Tamuning with momondo

Why use momondo?

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

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

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

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

An easier way to manage your Tamuning trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Guam

Fly your favorite airline to Tamuning

Airlines are sorted and displayed according to clicks in the past 7 days on momondo