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Cheap Flights from Knoxville to Ontario starting at S$ 115

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 Knoxville to Ontario

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 Knoxville to Ontario

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

Frontier Airlines
From S$ 104
Allegiant Air
From S$ 228
United Airlines
From S$ 285
Delta Air Lines
From S$ 296
American Airlines
From S$ 433
Alaska Airlines
From S$ 784
ANA airlines

Find more flights and airlines

Alternative Routes from Knoxville to Ontario

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

  • Cheapest
    Frontier Airlines
    TYS
    08:13
    18h 43m
    2 transfer
    ONT
    23:56
    Mcghee Tyson Airport - Ontario International Airport
    Thu, Apr 18Frontier Airlines
    S$ 104
  • Frontier Airlines
    TYS
    08:13
    18h 43m
    2 transfer
    ONT
    23:56
    Mcghee Tyson Airport - Ontario International Airport
    Thu, Apr 18Frontier Airlines
    S$ 104
    Find More Flights

Frequently Asked Questions

  • When to buy flight tickets from Knoxville (TYS) to Ontario (ONT) the cheapest?

    Airlines adjust prices for flights from Knoxville to Ontario 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 Knoxville (TYS) to Ontario (ONT) cost?

    According to Trip.com's data, the lowest price is around S$ 773.

Find cheapest flight ticket from Knoxville to Ontario

Cheapest direct flight price

S$ 114

Cheapest month

October

Peak season for travel

November