$1,390 Find Cheap Flights from Guam to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Ontario departing on 7/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Ontario, as well as popular online travel agencies
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Flights Deals

Cheap Flight Deals from Guam to Ontario

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Guam to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Guam to Ontario

KAYAK's recommended round-trip deals from the most popular airlines that fly from Guam to Ontario.
Discover the best prices for you by selecting your travel dates on KAYAK.
United Airlines Logo
12:30 pm - 10:45 pmGUM-ONT
27h 15m2 stops
United Airlines Logo
6:41 pm - 6:05 pmONT-GUM
30h 24m2 stops
$1,534United Airlines
Find Deal
Sat, May 31 - Sun, Jun 22
United Airlines Logo
7:00 pm - 10:45 pmGUM-ONT
44h 45m2 stops
United Airlines Logo
6:00 am - 6:05 pmONT-GUM
19h 05m2 stops
$1,581United Airlines
Find Deal
Mon, Jun 9 - Tue, Jun 24
United Airlines Logo
12:30 pm - 10:45 pmGUM-ONT
27h 15m2 stops
United Airlines Logo
6:34 pm - 10:40 pmONT-GUM
35h 06m2 stops
$1,605United Airlines
Find Deal
Sat, May 31 - Sat, Jun 21
United Airlines Logo
7:00 pm - 5:39 pmGUM-ONT
39h 39m2 stops
United Airlines Logo
6:10 am - 4:20 amONT-GUM
29h 10m2 stops
$1,610United Airlines
Find Deal
Sun, Jun 15 - Thu, Jul 17
United Airlines Logo
12:30 pm - 10:45 pmGUM-ONT
27h 15m2 stops
United Airlines Logo
6:00 am - 6:05 pmONT-GUM
19h 05m2 stops
$1,734United Airlines
Find Deal
Sun, Jun 1 - Fri, Jun 6
United Airlines Logo
1:00 pm - 5:39 pmGUM-ONT
21h 39m2 stops
United Airlines Logo
6:00 am - 6:05 pmONT-GUM
19h 05m2 stops
$1,887United Airlines
Find Deal
Sat, May 31 - Fri, Jun 20
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KAYAK's insights & trends for flights to Ontario

Get data-powered insights and trends for flights to Ontario to help you find the cheapest flights, the best time to fly and much more.

How long is the flight to Ontario?

The duration of your flight to Ontario depends on your departure and arrival airports. Obviously, any flights that include a layover will also be longer. The most popular route to Ontario on KAYAK is from Tamuning, which takes 16h 08m.

How many direct flights to Ontario are there each day?

There are around 90 direct flights from within Guam to Ontario every day. Most flights depart in the morning, with 7:00 am the most common departure time and 48% of flights departing in the morning.


Good to know

Cheapest flight$1,390
Flight from Tamuning to Ontario

FAQs - booking Ontario flights

  • How far is Ontario Airport from central Ontario?

    You’ll need to travel 3 miles to reach the Ontario city center from Ontario Airport.

  • What is the name of Ontario’s airport?

    All flights to Ontario land at Ontario Airport. The airport code is ONT,and it can also be referred to as Ontario or Ontario Intl.

  • What is the cheapest day to fly to Ontario?

    Based on KAYAK data, the cheapest day to fly to Ontario is Thursday where round-trip tickets can be as cheap as $1,390. On the other hand, the most expensive day to fly is Wednesday, where round-trip prices are $2,005 on average.

  • How does KAYAK find such low prices on flights to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Ontario?

    The cheapest time of day to fly to Ontario is generally in the morning, when round-trip flights cost $1,625 on average. The most expensive time of day to fly to Ontario is generally in the morning, which is peak travel time and where the average cost of a ticket is $1,625.

  • How many direct flights to Ontario are there each week?

    Each week there are around 630 direct flights from within Guam to Ontario. The most common day for departures is Sunday, with 16% of flights taking off on this day.

Top tips for finding cheap flights to Ontario

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Ontario flight deals.

Top airline flying from Guam to Ontario

 
See real verified KAYAK customer reviews for airlines flying to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Guam to Ontario. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8696 reviews
6.6Food
7.7Boarding
8.1Crew
7.1Entertainment
7.3Comfort
Airline reviews

A bit rush for transit. Food and entertainment are not available

8.0 ExcellentAnonymous, Apr 2025ORD - SFO
Read more United Airlines reviews

A bit rush for transit. Food and entertainment are not available

Wonderful and fast TSA checkpoint. The line was fast and our gate was close by

The gate was too far away for the connecting flight

Generally good. The aisles have gotten narrower which can slow down boarding. Flight crew was great! Healthier complimentary snacks would be appreciated. Due to earthquake in San Francisco we had to circle in air space for a bit but then had a smooth landing. I laud the flight crew for their patience ;)

We tried to upgrade to economy premium but were told this was not possible as we had booked through United Airlines (and Air Canada was operating the flight). This seemed silly given there was ample space in economy premium. Additionally, we had to wait almost 1.5 hours upon arrival to taxi to the gate. Otherwise, the crew were very pleasant and passengers were friendly.

headphone jack didnt work for the first flight and not much variety

The agents was very rude and they charged me $50 for a carry-on bag saying that it was too big and then I saw someone going on a plane with the same size bag as me

For the most part united was a good experience, how ever when they came by with the snacks and water, they completely passed by my wife and I. As we were in separate rows. On a 5 hr flight we were not offered water

Fantastic crew. Flight was delayed at last minute but we were given updates every 20 minutes and the crew was so friendly and considerate. I miss the touch screens on the back of the seats, wish they would bring that back though.

Beijing PEK to SFO. I had an economy seat on this flight. The seat comfort was acceptable. My main complaint is with the FA’s lack of personality and absence from servicing the plane, specifically restroom care (I wish I could share a pic of the restroom that I captured) and care of travelers—drink cart/availability of drinks. I'm amazed at the level of service on other International travel where a passenger is most often appreciated.

Everything you need to know for your flight to Ontario

Information on the airport you'll fly into in Ontario

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