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Cheap Flights from Ontario to Guam starting at S$ 2,208

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

  • One way
  • Round-trip

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

Cheapest time to fly from Ontario to Guam

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

Displayed prices are calculated based on the lowest average weekly prices of the corresponding route on Trip.com.
Cheapest Airlines flying from Ontario to Guam

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

United Airlines
From S$ 1,916
Delta Air Lines
From S$ 1,918
Hawaiian Airlines
From S$ 2,208
ANA airlines

Find more flights and airlines

Alternative Routes from Ontario to Guam

Searching for potential routes that might be cheaper and faster? Check out these alternative flights from Ontario to Guam.

  • Cheapest
    United Airlines
    ONT
    06:00
    19h 15m
    3 transfer
    GUM
    18:15
    Ontario International Airport - Antonio B. Won Pat International Airport
    Sat, Apr 13United Airlines
    S$ 1,338
  • United Airlines
    ONT
    06:00
    19h 15m
    3 transfer
    GUM
    18:15
    Ontario International Airport - Antonio B. Won Pat International Airport
    Sat, Apr 13United Airlines
    S$ 1,338
    Find More Flights

Frequently Asked Questions

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

    Airlines adjust prices for flights from Ontario to Guam based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the cheapest flight prices on Tuesdays, Wednesdays, and Saturdays.
  • How much is a flight from Ontario (ONT) to Guam (GUM) cost?

    According to Trip.com's data, the lowest price is around S$ 2,248.
  • What is the transportation method from the main airport to downtown in Guam?

    • The distance from Antonio B. Won Pat International Airport to downtown is about 4km, by taxi about 20 minutes.
  • How many airports in Guam?

    There are 1 airports near Guam: Antonio B. Won Pat International Airport.

Find cheapest flight ticket from Ontario to Guam

Cheapest direct flight price

S$ 2,208

Cheapest month

January

Peak season for travel

December