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 January 2026, 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.

$1,428 Cheap Flights from Ontario to Tamuning in 2026

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Find the cheapest flights from Ontario to Tamuning

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6:00 am - 6:05 pm

ONT

GUM

19h 05m

2 stops

7:05 am - 9:41 am

GUM

ONT

19h 36m

2 stops

$1,869United Airlines

Wed, May 6 - Wed, May 20

6:00 am - 2:35 pm

ONT

GUM

38h 35m

2 stops

4:50 pm - 10:34 pm

GUM

ONT

46h 44m

2 stops

$1,904Delta

Mon, Mar 2 - Fri, Mar 20

6:00 am - 6:05 pm

ONT

GUM

19h 05m

2 stops

7:05 am - 12:37 pm

GUM

ONT

22h 32m

2 stops

$1,919United Airlines

Mon, Apr 13 - Fri, Apr 24

6:37 pm - 6:50 pm

ONT

GUM

54h 13m

2 stops

7:05 am - 5:47 pm

GUM

ONT

27h 42m

3 stops

$2,205United Airlines

Sat, Mar 7 - Mon, Mar 30

9:06 pm - 7:05 pm

ONT

GUM

27h 59m

2 stops

7:25 am - 5:41 pm

GUM

ONT

27h 16m

3 stops

$2,229United Airlines

Mon, Mar 2 - Fri, Mar 20

6:37 pm - 4:20 am

ONT

GUM

39h 43m

3 stops

7:25 am - 5:41 pm

GUM

ONT

27h 16m

3 stops

$2,253United Airlines

Mon, Mar 2 - Fri, Mar 20

6:10 am - 7:05 pm

ONT

GUM

18h 55m

2 stops

12:30 pm - 12:18 pm

GUM

ONT

17h 48m

2 stops

$2,256United Airlines

Tue, Mar 3 - Sat, Mar 7

6:15 am - 7:05 pm

ONT

GUM

18h 50m

2 stops

7:25 am - 12:18 pm

GUM

ONT

21h 53m

2 stops

$2,279United Airlines

Fri, Mar 6 - Sun, Mar 15

6:00 am - 6:05 pm

ONT

GUM

19h 05m

2 stops

7:05 am - 12:20 pm

GUM

ONT

22h 15m

2 stops

$2,309United Airlines

Wed, Jun 24 - Tue, Jun 30

6:10 am - 7:05 pm

ONT

GUM

18h 55m

2 stops

7:40 am - 12:38 pm

GUM

ONT

22h 58m

2 stops

$2,379United Airlines

Mon, Feb 16 - Mon, Mar 2

United Airlines flights from Ontario to Tamuning

Our best United Airlines deals on Ontario to Tamuning flight tickets

United Airlines

May 6

ONT6:00 amOntario

19h 05m

2 stops

GUM6:05 pmTamuning Guam Intl

May 20

GUM7:05 amTamuning Guam Intl

19h 36m

2 stops

ONT9:41 amOntario

$1,869

United Airlines

Apr 13

ONT6:00 amOntario

19h 05m

2 stops

GUM6:05 pmTamuning Guam Intl

Apr 24

GUM7:05 amTamuning Guam Intl

22h 32m

2 stops

ONT12:37 pmOntario

$1,919

United Airlines

Mar 7

ONT6:37 pmOntario

54h 13m

2 stops

GUM6:50 pmTamuning Guam Intl

Mar 30

GUM7:05 amTamuning Guam Intl

27h 42m

3 stops

ONT5:47 pmOntario

$2,205

Delta flights from Ontario to Tamuning

Our best Delta deals on Ontario to Tamuning flight tickets

Delta

Mar 2

ONT6:00 amOntario

38h 35m

2 stops

GUM2:35 pmTamuning Guam Intl

Mar 20

GUM4:50 pmTamuning Guam Intl

46h 44m

2 stops

ONT10:34 pmOntario

$1,904

Delta

Feb 4

ONT7:30 amOntario

21h 35m

2 stops

GUM11:05 pmTamuning Guam Intl

Feb 20

GUM1:00 amTamuning Guam Intl

39h 37m

2 stops

ONT10:37 pmOntario

$2,504

Delta

Feb 6

ONT7:30 amOntario

21h 35m

2 stops

GUM11:05 pmTamuning Guam Intl

Feb 20

GUM1:00 amTamuning Guam Intl

39h 37m

2 stops

ONT10:37 pmOntario

$2,554

Fly from

Fly to

Route

Depart

Return

Price

OntarioTamuning

ONT - GUM

ONTGUM

Ontario

Wed 5/6

6:00 am-6:05 pm

2 stops19h 05m

Tamuning Guam Intl

Wed 5/20

7:05 am-9:41 am

2 stops19h 36m

$1,869

OntarioTamuning

ONT - GUM

ONTGUM

Ontario

Mon 3/2

6:00 am-2:35 pm

2 stops38h 35m

Tamuning Guam Intl

Fri 3/20

4:50 pm-10:34 pm

2 stops46h 44m

$1,904

OntarioTamuning

ONT - GUM

ONTGUM

Ontario

Mon 4/13

6:00 am-6:05 pm

2 stops19h 05m

Tamuning Guam Intl

Fri 4/24

7:05 am-12:37 pm

2 stops22h 32m

$1,919

OntarioTamuning

ONT - GUM

ONTGUM

Ontario

Sat 3/7

6:37 pm-6:50 pm

2 stops54h 13m

Tamuning Guam Intl

Mon 3/30

7:05 am-5:47 pm

3 stops27h 42m

$2,205

OntarioTamuning

ONT - GUM

ONTGUM

Ontario

Mon 3/2

9:06 pm-7:05 pm

2 stops27h 59m

Tamuning Guam Intl

Fri 3/20

7:25 am-5:41 pm

3 stops27h 16m

$2,229

OntarioTamuning

ONT - GUM

ONTGUM

Ontario

Mon 3/2

6:37 pm-4:20 am

3 stops39h 43m

Tamuning Guam Intl

Fri 3/20

7:25 am-5:41 pm

3 stops27h 16m

$2,253

OntarioTamuning

ONT - GUM

ONTGUM

Ontario

Tue 3/3

6:10 am-7:05 pm

2 stops18h 55m

Tamuning Guam Intl

Sat 3/7

12:30 pm-12:18 pm

2 stops17h 48m

$2,256

OntarioTamuning

ONT - GUM

ONTGUM

Ontario

Fri 3/6

6:15 am-7:05 pm

2 stops18h 50m

Tamuning Guam Intl

Sun 3/15

7:25 am-12:18 pm

2 stops21h 53m

$2,279

OntarioTamuning

ONT - GUM

ONTGUM

Ontario

Wed 6/24

6:00 am-6:05 pm

2 stops19h 05m

Tamuning Guam Intl

Tue 6/30

7:05 am-12:20 pm

2 stops22h 15m

$2,309

OntarioTamuning

ONT - GUM

ONTGUM

Ontario

Mon 2/16

6:10 am-7:05 pm

2 stops18h 55m

Tamuning Guam Intl

Mon 3/2

7:40 am-12:38 pm

2 stops22h 58m

$2,379

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 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

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

United Airlines is the most popular carrier operating from Ontario to Tamuning Guam Intl

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

Fastest flight time	18h 50m
Direct flights	None

The fastest flight from Ontario to Tamuning takes 18h 50m

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 January 2026, 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 9,219 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

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Cheap flights from Ontario to Tamuning from $1,657

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 2/25. 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

Cheap last minute 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

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

United Airlines is the most popular carrier operating from Ontario to Tamuning Guam Intl

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

Fastest flight time

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