Trip.com
>
Flights
>
Flights to United States
>
Flights to California
>
Flights to Ontario
>
Flights from Guam to Ontario

Cheap flight deals from Guam to Ontario

We've found these cheap flights for you. You can book one-way or round-trip flight tickets.

  • Round-trip
  • One way

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

When is the cheapest time to fly from Guam to Ontario?

We monitor flight fares to help you find the best deals effortlessly

Cheapest flights
From price
Search
  • 4 11
  • 11 18
  • 18 25

  • Jun

    25 1
  • 1 8
  • 8 15
  • 15 22
  • 22 29

  • Jul

    29 6
  • 6 13
  • 13 20
  • 20 27
Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

  • When are flight tickets from Guam (GUM) to Ontario (ONT) the cheapest?

    Airlines adjust prices for flights from Guam to Ontario based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much do flights from Guam (GUM) to Ontario (ONT) cost?

    According to Trip.com's data, the lowest price is around AED 9,459.

How to find a cheap flight from Guam to Ontario

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Guam to Ontario. Book your flights at the right time and save more.
1
Being flexible with your dates to get the cheapest Guam to Ontario ticket.
Tap "Date" on flight search bar to get the calender for Guam to Ontario airfare over next 6 months in 2025.
2
Compare cheap Guam to Ontario flight deals from over hundreds of airlines.
Compare prices from over 500 airlines with our powerful search and find the cheapest flight tickets from Guam to Ontario.
3
Set up a Price Alert
By setting up a Price Alert for your Guam to Ontario route, you can easily track the price of your airline tickets from without manually checking every day.
4
Don't miss cheap Guam to Ontario flight deals and promo codes.
You can always get the latest deals through Trip.com Deals and Promo Codes for cheap flights. If registering a free membership, you can receive more deals for your flights.
5
Book early or wait unitl the last minute.
It's always better to book early. Flight tickets tend to be the cheapest when they are first released, normally about a year before the departure date. So, check online as soon as the flights you want become available. If you miss the cheapest time, you can still find lower-priced tickets as the flight date approaches.
6
Search for flights on the go.
To get the best flight booking experience on the go, download Trip.com and search for cheap flight tickets from Guam to Ontario to get exclusive deals for you.

Flight Info | Guam to Ontario

Off-season for travel September
Peak season for travel November
Flight distance 15,851.73 km
Popular airline Japan Airlines

More Travel Options

  • Top Routes from Guam
  • Top Routes to Ontario
  • Trending Airlines