TYS - ONT

$189 Find Cheap Flights from Knoxville to Ontario - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$377
Typical prices: $387-$584
American Airlines
Sat 12/8Sat 12/15
TYS - ONT • 1 stop
Cheapest one-way
$189
Typical prices: $229-$375
Delta
Sun 2/18
TYS - ONT • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Knoxville and Ontario. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
October
Cheapest • 19% price drop
May
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Chicago O'Hare Intl (ORD)
Cheapest • Avg $339 (round-trip)
Dallas/Fort Worth (DFW)
Shortest trip • 7h 09m (one-way)
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Insights
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Flight Deals

Cheap Flights from Knoxville to Ontario (TYS-ONT)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Knoxville to Ontario

Sat, Dec 12 - Tue, Jan 5
American Airlines Logo
5:30 am - 9:42 amTYS  Knoxville McGhee Tyson-ONT Ontario
7h 12m1 stop Dallas/Fort Worth
American Airlines Logo
10:10 pm - 9:47 amONT  Ontario-TYS Knoxville McGhee Tyson
8h 37m1 stop Charlotte Douglas
$377American Airlines
Tue, Feb 23 - Tue, Mar 2
American Airlines Logo
3:16 pm - 10:06 pmTYS  Knoxville McGhee Tyson-ONT Ontario
9h 50m1 stop Charlotte Douglas
American Airlines Logo
6:00 am - 5:54 pmONT  Ontario-TYS Knoxville McGhee Tyson
8h 54m1 stop Dallas/Fort Worth
$377American Airlines
Sat, Dec 12 - Wed, Jan 6
Delta Logo
5:40 am - 11:07 amTYS  Knoxville McGhee Tyson-ONT Ontario
8h 27m1 stop Atlanta Hartsfield-Jackson
Delta Logo
1:07 pm - 10:23 pmONT  Ontario-TYS Knoxville McGhee Tyson
6h 16m1 stop Atlanta Hartsfield-Jackson
$377Delta
Tue, Dec 8 - Tue, Dec 15
American Airlines Logo
5:30 am - 9:42 amTYS  Knoxville McGhee Tyson-ONT Ontario
7h 12m1 stop Dallas/Fort Worth
American Airlines Logo
7:00 am - 4:39 pmONT  Ontario-TYS Knoxville McGhee Tyson
6h 39m1 stop Dallas/Fort Worth
$377American Airlines
Tue, Feb 23 - Tue, Mar 2
United Airlines Logo
3:35 pm - 10:30 pmTYS  Knoxville McGhee Tyson-ONT Ontario
9h 55m2 stops Denver Intl San Francisco
United Airlines Logo
7:00 am - 5:11 pmONT  Ontario-TYS Knoxville McGhee Tyson
7h 11m1 stop Chicago O'Hare Intl
$382United Airlines
Fri, Dec 18 - Sun, Jan 10
Multiple Airlines Logo
1:31 pm - 7:18 amTYS  Knoxville McGhee Tyson-ONT Ontario
20h 47m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
12:26 pm - 1:16 pmONT  Ontario-TYS Knoxville McGhee Tyson
21h 50m1 stop Las Vegas Harry Reid Intl
$382Multiple Airlines
Tue, Feb 23 - Tue, Mar 2
United Airlines Logo
3:35 pm - 10:30 pmTYS  Knoxville McGhee Tyson-ONT Ontario
9h 55m2 stops Denver Intl San Francisco
United Airlines Logo
5:00 am - 5:11 pmONT  Ontario-TYS Knoxville McGhee Tyson
9h 11m2 stops Denver Intl Chicago O'Hare Intl
$387United Airlines
Sat, Dec 12 - Wed, Jan 6
Southwest Logo
5:20 pm - 9:00 pmTYS  Knoxville McGhee Tyson-ONT Ontario
6h 40m1 stop Denver Intl
Southwest Logo
7:00 am - 3:55 pmONT  Ontario-TYS Knoxville McGhee Tyson
5h 55m1 stop Denver Intl
$399Southwest
Sat, Jan 9 - Mon, Jan 11
Delta Logo
5:15 am - 11:58 amTYS  Knoxville McGhee Tyson-ONT Ontario
9h 43m1 stop Atlanta Hartsfield-Jackson
Delta Logo
7:05 am - 3:54 pmONT  Ontario-TYS Knoxville McGhee Tyson
5h 49m1 stop Atlanta Hartsfield-Jackson
$414Delta
Wed, Mar 24 - Tue, Mar 30
Delta Logo
5:30 am - 11:27 amTYS  Knoxville McGhee Tyson-ONT Ontario
8h 57m1 stop Atlanta Hartsfield-Jackson
Delta Logo
7:00 am - 4:08 pmONT  Ontario-TYS Knoxville McGhee Tyson
6h 08m1 stop Atlanta Hartsfield-Jackson
$415Delta
Booking Insights

Price, demand and travel trends for Knoxville to Ontario flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Knoxville to Ontario?

Round-trip flights from Knoxville to Ontario typically range from $387 to $584. The lowest price found in the past 5 days was $377, on American Airlines.

What's the cheapest day of the week to fly from Knoxville to Ontario?

Based on deals KAYAK users found in the last 12 months, Thursday is the cheapest day of the week to fly from Knoxville to Ontario. It’s 14% cheaper than the average day, while Sunday is the most expensive, with prices 55% higher.

What’s the cheapest month to fly from Knoxville to Ontario?

•October is the cheapest month to fly from Knoxville to Ontario at $388 round-trip.
•June ($655) and July ($557) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 68% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

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Key details for Knoxville to Ontario flights

Low season

December

Cheapest flight

$189
Beat the crowds with an average 36% drop in travelers.
The most popular month to fly with an average 40% increase in travelers.
One-way flight from Knoxville to Ontario

When to book flights from Knoxville to Ontario

Are your dates flexible? Find out the best times to travel from Knoxville to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Knoxville to Ontario flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Knoxville to Ontario?

    Two cabin classes are available on flights from Knoxville to Ontario:

    • Economy Class
    • First Class

  • How long is a flight from Knoxville to Ontario?

    A nonstop flight from Knoxville to Ontario takes 00m, covering 1,897 miles.

  • Do I need a passport to fly from Knoxville to Ontario?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • How much should I expect to pay for a Knoxville to Ontario flight?

    Round-trip flights from Knoxville to Ontario range from $387 to $584, with an average of $481 over the past 12 months. Anything below $387 counts as a good deal.

  • Have flight prices from Knoxville to Ontario changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $377 to $2,054. That means the highest observed fare was about 5x higher than the lowest one.

  • How are flight prices from Knoxville to Ontario looking right now?

    One-way fares from Knoxville to Ontario are currently lower than usual. Average one-way flight prices are about $220, which is 27% below the typical average for this route.

  • What car rental options are available at Ontario Airport (ONT)?

    Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates averaging $60 for economy cars. Top options include:

    • Fox
    • Europcar
    • Thrifty
    • Alamo
    • Dollar

  • Which airports can I use when flying from Knoxville to Ontario?

    Flights from Knoxville to Ontario usually depart from Knoxville McGhee Tyson (TYS) and arrive at Ontario (ONT).

  • Which airports do connecting flights from Knoxville to Ontario pass through?

    One-stop flights from Knoxville to Ontario most commonly connect through:

    • Dallas/Fort Worth (DFW) - 59% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 19% of one-stop connections
    • Denver Intl (DEN) - 18% of one-stop connections
    • Las Vegas Harry Reid Intl (LAS) - 2% of one-stop connections

  • Can I save money by using flexible dates for flights from Knoxville to Ontario?

    Yes. Flexible dates can save you up to 45% on flights from Knoxville to Ontario. Thursday is the cheapest departure day at $414 round-trip on average, while Sunday is the most expensive at $749, a difference of $335.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from Knoxville to Ontario?

    Flying via Dallas/Fort Worth (DFW) gives the shortest average 1-stop total travel time at 7h 09m, compared with 7h 21m via Denver Intl (DEN) and 7h 22m via Charlotte Douglas (CLT).

  • What is the time difference between Knoxville and Ontario?

    Ontario is 3 hours behind Knoxville (Pacific Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Ontario?

    Some of the most popular sights in Ontario are Ontario Convention Center and Cucamonga-Guasti Regional Park. These are among the most viewed places in Ontario on KAYAK.

Your guide to booking Knoxville to Ontario flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Thursday departure and avoid flying on Sunday. On this route, Thursday flights average $414, about $335 less than Sunday fares (45% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Knoxville to Ontario trip for October. Fares historically average $388 round-trip in that month - typically $267 less than the most expensive month, which is June (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Ontario Airport.

    • Ontario Airport Inn
    • Azure Hotel & Suites, Trademark Collection by Wyndham
    • Holiday Inn Ontario Airport By IHG

More options for your flight from Knoxville to Ontario

Complete your trip to Ontario with a hotel stay or car rental

Car rentals in Ontario
Hotels in Ontario
Vacations in Ontario