ONT - GUM

$621 Find Cheap Flights from Ontario to Tamuning

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Tamuning departing on 2/2. 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
1 adult, Economy, 0 bags

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Tamuning, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Tamuning, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$1,206
United Airlines
Sat 2/28Wed 3/4
ONT - GUM • 2 stops
Cheapest one-way
$621
Multiple Airlines
Mon 2/2
ONT - GUM • 3 stops
Top airlines
United Airlines
Cheapest • from $1,664 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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We hope you love your trip to Tamuning!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Tamuning (ONT-GUM)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Tamuning 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Tamuning

Sat, Feb 28 - Wed, Mar 4
United Airlines Logo
1:53 pm - 3:40 pm
ONT
-
GUM
55h 47m2 stops
United Airlines Logo
7:40 am - 8:50 pm
GUM
-
ONT
31h 10m2 stops
$1,206United Airlines
Sat, Feb 28 - Wed, Mar 4
United Airlines Logo
1:53 pm - 3:40 pm
ONT
-
GUM
55h 47m2 stops
United Airlines Logo
7:40 am - 12:43 pm
GUM
-
ONT
23h 03m2 stops
$1,664United Airlines
Tue, Feb 17 - Mon, Feb 23
Delta Logo
7:30 am - 11:05 pm
ONT
-
GUM
21h 35m2 stops
Delta Logo
1:00 am - 11:49 pm
GUM
-
ONT
40h 49m2 stops
$1,753Delta
Mon, Jan 19 - Sun, Feb 1
Delta Logo
6:00 am - 11:05 pm
ONT
-
GUM
23h 05m2 stops
Delta Logo
1:00 am - 10:44 pm
GUM
-
ONT
39h 44m2 stops
$1,840Delta
Mon, Apr 6 - Mon, Apr 13
United Airlines Logo
6:00 am - 6:05 pm
ONT
-
GUM
19h 05m2 stops
United Airlines Logo
7:05 am - 9:55 am
GUM
-
ONT
19h 50m2 stops
$1,868United Airlines
Sun, Mar 1 - Sun, Mar 15
United Airlines Logo
6:09 am - 7:05 pm
ONT
-
GUM
18h 56m2 stops
United Airlines Logo
7:25 am - 12:48 pm
GUM
-
ONT
22h 23m2 stops
$1,968United Airlines
Thu, Mar 19 - Tue, Mar 24
United Airlines Logo
6:00 am - 6:50 pm
ONT
-
GUM
19h 50m2 stops
United Airlines Logo
7:25 am - 12:49 pm
GUM
-
ONT
22h 24m2 stops
$2,178United Airlines
Thu, Jan 15 - Mon, Jan 19
United Airlines Logo
6:00 am - 7:05 pm
ONT
-
GUM
19h 05m2 stops
United Airlines Logo
7:40 am - 11:18 am
GUM
-
ONT
21h 38m2 stops
$2,243United Airlines
Fri, Dec 26 - Fri, Jan 2
United Airlines Logo
6:00 am - 7:00 pm
ONT
-
GUM
19h 00m2 stops
United Airlines Logo
7:40 am - 5:43 pm
GUM
-
ONT
28h 03m2 stops
$3,000United Airlines
Wed, Dec 24 - Sat, Jan 3
United Airlines Logo
6:00 am - 7:00 pm
ONT
-
GUM
19h 00m2 stops
United Airlines Logo
7:40 am - 12:38 pm
GUM
-
ONT
22h 58m2 stops
$3,313United Airlines
Booking Insights

KAYAK's insights & trends for Ontario to Tamuning flights

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

What’s the cheapest day of the week to fly from Ontario to Tamuning?

The average price of all round-trip flights from Ontario to Tamuning clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Tamuning on a Monday, as we generally find the cheapest rates on that day for this route. On the other hand, Friday is the most expensive day to fly from Ontario to Tamuning. For your return ticket, we recommend flying on a Thursday and avoiding Wednesdays for the best deals.

Good to know

Cheapest flight$621
Flight from Ontario to Tamuning

When to book flights from Ontario to Tamuning

Are your dates flexible? Find out the best times to travel from Ontario to Tamuning based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Tamuning

  • What is the cheapest flight from Ontario to Tamuning?

    In the last 3 days, the lowest price for a flight from Ontario to Tamuning was $621 for a one-way ticket and $1,206 for a round-trip.

  • Do I need a passport to fly between Ontario and Tamuning?

    Yes

  • Which aircraft models fly most regularly from Ontario to Tamuning?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Tamuning?

    Star Alliance is the only airline alliance operating flights between Ontario and Tamuning.

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

    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 from Ontario to Tamuning.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Tamuning from 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 from Ontario to Tamuning?

    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 Tamuning with an airline and back to Ontario with another airline. Booking your flights between Ontario and GUM can sometimes prove cheaper using this method.

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

    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 Tamuning from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Ontario to Tamuning

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Tamuning. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Tamuning? 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 9094 reviews
7.7Boarding
7.1Entertainment
7.3Comfort
6.6Food
8.1Crew
Airline reviews

from SFO-> FRA flight, AVML meal was significantly less compared to regular meal, especially no Desert, no Bread, no sides.

10.0 ExcellentAnonymous, Nov 2025
SFO - FRA
Read more United Airlines reviews

from SFO-> FRA flight, AVML meal was significantly less compared to regular meal, especially no Desert, no Bread, no sides.

This was an older airplane. The cabin was constantly warm to hot throughout the 10 hour flight and there were no vents to personalize air flow. Also since it was an older plane, the material and comfort of the chairs were very uncomfortable. I left my flight with major soreness on my tailbone.

Older aircraft, no meal, only food was for purchase. Not impressed United.

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

My experience on this United Airlines flight was highly uncomfortable, primarily due to two issues: Cabin Temperature: The temperature on the Boeing 737 MAX 8 was unacceptably high, feeling consistently around 80 degrees throughout the flight. This made sleeping impossible and significantly detracted from the experience. Seating Arrangement: Being stuck in a middle seat for a six-and-a-half-hour overnight flight compounded the discomfort. Moving forward, I will always purchase a seat assignment to avoid this situation.

Premium Plus is a really good idea for longer flights

Same as last comment. Food sucks. Quality. Not surprising most people have no clue about nourishment Clearly

The flight attendants were great, I joked with one I can’t remember her name, a blond, really sweet. I thought it was run well very professional. This was great i survived Spirit, I know for which I speak.

We were in business class. the angled seats in that class do not have a real window view & the placement of the controls are bad. But we knew that. But the food options were mediocre. The taste was fine, but the size was for a child. It’s just really feels like United is skimping on everything. Even when we were in the Polaris lounge they did not have diet sodas. They said they were out no Coke zero no Diet Coke, etc. I do not think the portion of nuts they serve on the plane could get any smaller. Really a minimal service and offer for what you’re paying for in business.

I was in first class. The outlets at my seat did not work. The plane was shabby and run down. I had prepurchsed a day subscription for internet that was not redeemable. I had to repurchase the internet for my flight and then it didn’t work anyway. Quite disappointed in what was supposed to be the launch of a great vacation.

Everything you need to know for your flight from Ontario to Tamuning

Information on your arrival and departure airports