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$85+ Cheap flights from Ontario (ONT) to Tennessee

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BNA
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Ontario to Tennessee

Cheapest flights from Ontario to Tennessee
Explore the most affordable flight options available from Ontario to Tennessee. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This Trip.com deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:00 amONT - MEM
1 stop8h 49mMultiple Airlines
Mon 1/55:54 pmMEM - ONT
1 stop23h 15mMultiple Airlines
Deal found 12/17$197
This Frontier deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:45 amONT - BNA
1 stop9h 22mFrontier
Mon 12/297:02 pmBNA - ONT
1 stop6h 57mFrontier
Deal found 12/16$363
This Trip.com deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/226:00 amONT - MEM
1 stop8h 49mMultiple Airlines
Thu 1/18:07 pmMEM - ONT
1 stop5h 52mMultiple Airlines
Deal found 12/16$397
This Frontier deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/196:45 amONT - BNA
1 stop9h 22mFrontier
Wed 12/317:02 pmBNA - ONT
1 stop6h 57mFrontier
Deal found 12/16$397
This Kiwi.com deal was found by Cheapflights users on 12/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:17 pmONT - MEM
1 stop20h 32mMultiple Airlines
Mon 12/295:54 pmMEM - ONT
1 stop25h 28mMultiple Airlines
Deal found 12/18$411
This CheapOair deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/196:45 amONT - BNA
1 stop9h 22mFrontier
Thu 1/87:31 pmBNA - ONT
1 stop6h 25mFrontier
Deal found 12/17$414
This Delta deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3010:29 pmONT - BNA
1 stop8h 07mDelta
Wed 1/77:35 amBNA - ONT
1 stop8h 21mDelta
Deal found 12/15$416
This Frontier deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:45 amONT - BNA
1 stop9h 22mFrontier
Wed 12/317:02 pmBNA - ONT
1 stop6h 57mFrontier
Deal found 12/17$417
This Kiwi.com deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:00 amONT - MEM
1 stop8h 49mMultiple Airlines
Sun 1/48:07 pmMEM - ONT
2 stops23h 08mMultiple Airlines
Deal found 12/16$426
This Kiwi.com deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/296:00 amONT - BNA
2 stops22h 42mFrontier
Mon 1/57:02 pmBNA - ONT
1 stop29h 10mFrontier
Deal found 12/17$426
This Frontier deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/196:45 amONT - BNA
1 stop9h 22mFrontier
Sat 1/31:30 pmBNA - ONT
1 stop12h 29mFrontier
Deal found 12/16$427
This Delta deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/286:00 amONT - BNA
1 stop5h 46mDelta
Thu 1/84:26 pmBNA - ONT
1 stop6h 39mDelta
Deal found 12/17$432

Find flight deals from Ontario to Tennessee

Keep the following information in mind while searching for Ontario to Tennessee flight deals. Data was last updated December 18, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$161
(Kiwi.com)

One-way from

$85
(Trip.com)

Popular in

March

Cheapest in

September

Average price

$408

Good round-trip deal

$512 or less

Good one-way deal

$183 or less
Provider with most accurate pricing for Los Angeles-Nashville Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Nashville Intl flights.
Search Deals
From Ontario to Tennessee
Search Deals
One-way flight from Ontario to Tennessee
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($72 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Ontario to Tennessee.
Search Deals
Price to beat on a one-way flight from Ontario to Tennessee.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Tennessee that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from Ontario to Tennessee that are best for you.

Fly from

Ontario

Fly to

Tennessee

Route

Depart

Return

Price

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

Thu 1/8

6:00 am-3:28 pm

1 stop6h 28m

Knoxville McGhee Tyson

Sun 1/11

4:23 pm-11:56 pm

1 stop10h 33m

$217

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

Thu 1/8

6:00 am-3:28 pm

1 stop6h 28m

Knoxville McGhee Tyson

Thu 1/15

8:18 pm-11:59 pm

1 stop6h 41m

$233

OntarioNashville

ONT - BNA

ONTBNA

Ontario

Tue 5/12

12:00 pm-10:49 pm

1 stop8h 49m

Nashville Intl

Sat 5/16

12:15 pm-6:15 pm

1 stop8h 00m

$285

OntarioNashville

ONT - BNA

ONTBNA

Ontario

Thu 4/2

6:00 am-4:42 pm

1 stop8h 42m

Nashville Intl

Mon 4/13

3:10 pm-10:26 pm

1 stop9h 16m

$285

OntarioNashville

ONT - BNA

ONTBNA

Ontario

Fri 2/13

10:20 pm-8:17 am

1 stop7h 57m

Nashville Intl

Thu 2/19

4:55 pm-11:49 pm

1 stop8h 54m

$285

OntarioNashville

ONT - BNA

ONTBNA

Ontario

Thu 4/23

6:53 pm-5:39 am

1 stop8h 46m

Nashville Intl

Tue 5/12

7:00 am-12:37 pm

1 stop7h 37m

$285

OntarioNashville

ONT - BNA

ONTBNA

Ontario

Thu 2/12

10:20 pm-8:17 am

1 stop7h 57m

Nashville Intl

Sat 2/21

2:25 pm-9:05 pm

1 stop8h 40m

$285

OntarioNashville

ONT - BNA

ONTBNA

Ontario

Sat 1/17

12:41 pm-11:00 pm

1 stop8h 19m

Nashville Intl

Sat 1/24

6:00 am-11:31 am

1 stop7h 31m

$285

OntarioNashville

ONT - BNA

ONTBNA

Ontario

Sat 2/14

1:10 pm-10:00 pm

1 stop6h 50m

Nashville Intl

Wed 2/18

7:35 am-1:54 pm

1 stop8h 19m

$285

OntarioNashville

ONT - BNA

ONTBNA

Ontario

Fri 2/13

10:20 pm-8:17 am

1 stop7h 57m

Nashville Intl

Sat 2/14

4:55 pm-9:44 pm

1 stop6h 49m

$285

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 60 results
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Best time to book a flight from Ontario to Tennessee

Have a flexible travel schedule? Discover the best time to fly to Tennessee from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Tennessee

What is the cheapest month to book a flight from Ontario to Tennessee?

Currently, March is the cheapest month in which you can book a flight from Ontario to Tennessee (average of $76). Flying from Ontario to Tennessee in February is currently the most expensive (average of $186). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to TN?

Find hourly flight availability from Ontario to Tennessee. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 13% on flights from Ontario to Tennessee by exploring options for tickets in the evening.

What is the cheapest day to fly from Ontario to Tennessee?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Tennessee. Price data was last updated on December 13, 2025.

Travelers seeking maximum savings on their Ontario to Tennessee flight should consider departing on Sunday afternoons when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Tennessee

Get insights into the airlines that provide service to Tennessee. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Tennessee. Reviews last updated December 18, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from Ontario to Tennessee by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
7.9
Good
4,250 reviews

Boarding

8.1

Entertainment

7.5

Food

7.0

Overall

7.9

Crew

8.6

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Southwest
7.9
Good
4,250 reviews
Southwest
7.9
Good
4,250 reviews

Boarding

8.1

Entertainment

7.5

Food

7.0

Overall

7.9

Crew

8.6

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Delta
7.9
Good
8,005 reviews
Southwest
7.9
Good
4,250 reviews

Boarding

8.1

Entertainment

7.5

Food

7.0

Overall

7.9

Crew

8.6

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
United Airlines
7.4
Good
9,091 reviews
Southwest
7.9
Good
4,250 reviews

Boarding

8.1

Entertainment

7.5

Food

7.0

Overall

7.9

Crew

8.6

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
American Airlines
7.2
Good
11,054 reviews
Southwest
7.9
Good
4,250 reviews

Boarding

8.1

Entertainment

7.5

Food

7.0

Overall

7.9

Crew

8.6

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Frontier
5.8
Fair
3,081 reviews
Southwest
7.9
Good
4,250 reviews

Boarding

8.1

Entertainment

7.5

Food

7.0

Overall

7.9

Crew

8.6

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Tennessee. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Tennessee?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Tennessee.

  • How popular is this Ontario to Tennessee flight route?

    Flights from Ontario to Tennessee have been viewed 9 times in the past calendar month.

  • How long is the flight from Ontario to Tennessee?

    A quick flight from Ontario to Tennessee can take about 7h 35m. Frontier provides one of the quickest options available for as low as $309. Airlines will cover a distance of 1835 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Ontario to Tennessee one-way?

    One-way options have recently been found by users for as low as $78 on Frontier. Other airlines that offer cheap prices include Alaska Airlines from $103 and American Airlines from $131 one-way.

  • What are the most popular routes from Ontario to Tennessee?

    When deciding which route to take from Ontario to Tennessee consider Ontario - Nashville Intl, Ontario - Knoxville McGhee Tyson or Ontario - Memphis as they are the most popular.

  • What are the cheapest flights from Ontario to Tennessee?

    Looking for the cheapest flight from Ontario to Tennessee? While on average our users pay $440, our data indicates the cheapest price to be $158. The most popular route (Ontario - Nashville Intl), is priced around $183.

  • Can I find deals for flights from Ontario to Tennessee that include hotel bookings?

    Yes. In addition to deals on Ontario to Tennessee flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Tennessee?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Tennessee.

  • Can I find deals for business class flights from Ontario to Tennessee?

    Yes. Cheapflights offers flight deals from Ontario to Tennessee by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Tennessee?

    Currently, March is the cheapest month in which you can book a flight from Ontario to Tennessee (average of $76). Flying from Ontario to Tennessee in February is currently the most expensive (average of $186). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Ontario to Tennessee

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Ontario to Tennessee

Discover the top 7 airlines that operate flights from Ontario to Tennessee. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$98Average$196FlexibilityNo cancel feeOn-time65%
FrontierCheapest$130Average$222FlexibilityNo cancel feeOn-time62%
DeltaCheapest$239Average$401FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$256Average$417FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$256Average$438FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$278Average$316FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$336Average$471FlexibilityNo cancel feeOn-time63%

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