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Ontario

$68+ Cheap flights from Nashville to Ontario (BNA - ONT)

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 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
BNA — ONT
nov. 29 — dic. 61
sáb. 11/29
sáb. 12/6
1 adult, Economy
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Find cheap flights from Nashville to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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3. Compare prices and book

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Cheapflights Tip: The best prices from Nashville Intl to Ontario are usually found in August or April, booked 42 days in advance, depart on a Tuesday or Monday and return on a Saturday

Find flight deals from Nashville to Ontario

Cheapest flights from Nashville to Ontario
Explore the most affordable flight options available from Nashville to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 30, 2025.

This CheapOair deal was found by Cheapflights users on 10/28. 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.
sáb. 11/153:42 pmBNA - ONT
1 stop10h 08mFrontier
lun. 11/177:54 amONT - BNA
1 stop9h 17mFrontier
Deal found 10/28$130
This CheapOair deal was found by Cheapflights users on 10/30. 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.
vie. 11/143:42 pmBNA - ONT
1 stop21h 28mFrontier
lun. 11/177:54 amONT - BNA
1 stop9h 17mFrontier
Deal found 10/30$137
This Priceline deal was found by Cheapflights users on 10/29. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/133:42 pmBNA - ONT
1 stop10h 08mFrontier
lun. 11/177:54 amONT - BNA
1 stop9h 17mFrontier
Deal found 10/29$176
This CheapOair deal was found by Cheapflights users on 10/29. 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.
vie. 11/143:42 pmBNA - ONT
1 stop10h 08mFrontier
sáb. 11/1512:05 pmONT - BNA
1 stop24h 42mFrontier
Deal found 10/29$182
This CheapOair deal was found by Cheapflights users on 10/30. 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.
sáb. 11/83:42 pmBNA - ONT
1 stop21h 28mFrontier
dom. 11/166:53 amONT - BNA
1 stop5h 54mFrontier
Deal found 10/30$183
This Kiwi.com deal was found by Cheapflights users on 10/30. 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.
mar. 12/29:00 pmBNA - ONT
1 stop26h 17mMultiple Airlines
dom. 12/74:01 pmONT - BNA
1 stop24h 45mMultiple Airlines
Deal found 10/30$187
This Kiwi.com deal was found by Cheapflights users on 10/29. 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.
jue. 12/47:41 pmBNA - ONT
1 stop20h 44mFrontier
dom. 12/74:01 pmONT - BNA
1 stop24h 45mFrontier
Deal found 10/29$188
This CheapOair deal was found by Cheapflights users on 10/29. 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.
jue. 11/63:42 pmBNA - ONT
1 stop21h 28mFrontier
jue. 11/1312:05 pmONT - BNA
1 stop24h 42mFrontier
Deal found 10/29$196
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
jue. 12/112:15 pmBNA - ONT
1 stop29h 19mFrontier
mié. 12/316:45 amONT - BNA
1 stop9h 22mFrontier
Deal found 10/28$200
This CheapOair deal was found by Cheapflights users on 10/29. 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.
vie. 11/73:42 pmBNA - ONT
1 stop21h 28mFrontier
jue. 11/1312:05 pmONT - BNA
1 stop24h 42mFrontier
Deal found 10/29$202
This Gotogate deal was found by Cheapflights users on 10/28. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/76:45 pmBNA - ONT
1 stop21h 40mFrontier
sáb. 12/133:20 pmONT - BNA
1 stop24h 30mFrontier
Deal found 10/28$203

Cheap flight deals from Nashville to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Nashville (BNA) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated octubre 30, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$130
(CheapOair)

One-way from

$68
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$497

Good round-trip deal

$407 or less

Good one-way deal

$285 or less
Provider with most accurate pricing for Nashville Intl-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Nashville Intl-Ontario flights.
Search Deals
From Nashville Intl to Ontario
Search Deals
One-way flight from Nashville Intl to Ontario
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($26 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from Nashville Intl to Ontario.
Search Deals
Price to beat on a one-way flight from Nashville Intl to Ontario.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Nashville to Ontario 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 octubre 30, 2025.
Use the filters below to find and compare flights from Nashville to Ontario that are best for you.

Fly from

Nashville

Fly to

Ontario

Route

Depart

Return

Price

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

vie. 11/14

3:42 pm-11:10 am

1 stop21h 28m

Ontario

lun. 11/17

7:54 am-7:11 pm

1 stop9h 17m

$137

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

mié. 12/10

6:13 pm-11:04 pm

1 stop6h 51m

Ontario

dom. 1/18

1:04 pm-11:00 pm

1 stop7h 56m

$285

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

vie. 12/5

7:23 pm-11:58 pm

1 stop6h 35m

Ontario

lun. 12/8

6:40 am-10:02 pm

2 stops13h 22m

$290

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

vie. 12/12

6:13 pm-11:04 pm

1 stop6h 51m

Ontario

dom. 12/14

6:00 am-4:55 pm

2 stops8h 55m

$290

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

vie. 12/5

3:55 pm-11:29 pm

1 stop9h 34m

Ontario

lun. 12/8

12:13 pm-11:59 pm

1 stop9h 46m

$311

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

jue. 11/20

5:15 am-11:06 am

1 stop7h 51m

Ontario

mar. 12/2

1:29 pm-10:02 pm

1 stop6h 33m

$312

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

jue. 11/20

5:15 am-11:06 am

1 stop7h 51m

Ontario

lun. 11/24

5:49 pm-9:03 am

2 stops13h 14m

$317

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

jue. 12/11

3:55 pm-11:29 pm

1 stop9h 34m

Ontario

lun. 12/15

7:10 am-4:45 pm

1 stop7h 35m

$341

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

mié. 11/19

6:30 am-12:37 pm

1 stop8h 07m

Ontario

dom. 11/23

6:38 pm-5:11 am

1 stop8h 33m

$375

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

sáb. 11/22

9:00 pm-9:06 pm

1 stop26h 06m

$141

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 20 results
1
2

Compare providers for flights from Nashville to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Nashville to Ontario in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
MytripPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Nashville-Ontario flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Nashville-Ontario flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from Nashville-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Nashville-Ontario flights, Cheapflights users trust CheapOair the most. CheapOair has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Nashville-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Nashville to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Nashville 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 Nashville to Ontario

How far ahead should I book a flight from Nashville to Ontario?

Use this chart to determine the optimal time to book a round-trip flight from Nashville to Ontario. Price data was last updated on October 24, 2025.

Booking 42 days in advance of your planned departure date is, on average, the best time to get cheap flights from Nashville to Ontario. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, August is the cheapest month in which you can book a flight from Nashville to Ontario (average of $73). Flying from Nashville to Ontario in December is currently the most expensive (average of $197). 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 BNA to ONT?

Find hourly flight availability from Nashville to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octubre 30, 2025.

When flying from Nashville to Ontario, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 32% versus a flight in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from Nashville to Ontario. Price data was last updated on October 5, 2025.

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

The best insider tips for Nashville to Ontario flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Nashville to Ontario trip
Airports
BNA

For self-parking, Terminal Garage 1 and 2 are closest to the terminal, offering a flat daily rate.

Read more about BNAby Mark Chesnut
ONT

Consider renting a car at ONT for easy access to Southern California destinations like Palm Springs and Big Bear.

Read more about ONTby Bill Fink
Our travel experts
Bill Fink

Bill Fink

Expert on ONT

Bill Fink

Bill Fink

Bill is an award-winning travel writer with extensive credits covering airlines and the aviation industry for publications including AARP, AFAR, The Points Guy and Yahoo. Based in Portland, Oregon, Bill has traveled to more than 75 countries - and been late for his flight in most of them. He once achieved top-level frequent flier status for all of American, Delta and United Airlines during a single year.

Read more
Mark Chesnut

Mark Chesnut

Expert on BNA

Mark Chesnut

Mark Chesnut

Mark Chesnut is a travel writer and public speaker with more than 30 years of experience. The 2019 winner of the NLGJA Excellence in Travel Writing Award, Mark is the author of the book “Prepare for Departure” and has covered air travel for multiple top consumer and trade media outlets.

Read more

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated octubre 30, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from Nashville to Ontario by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,243 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,243 reviews
Southwest
8.0
Very good
4,243 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
7.9
Good
7,998 reviews
Southwest
8.0
Very good
4,243 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,998 reviews
Southwest
8.0
Very good
4,243 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
11,035 reviews
Southwest
8.0
Very good
4,243 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,122 reviews
Southwest
8.0
Very good
4,243 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

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

  • How popular is this Nashville to Ontario flight route?

    Flights from Nashville Intl to Ontario have been viewed 1 times in the past calendar month.

  • How long is the flight from Nashville to Ontario?

    Departing from Nashville to Ontario will take you 6h 51m. There are 1745 mi between Nashville and Ontario. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Nashville to Ontario round-trip?

    Currently priced at $145, Frontier will fly you from Nashville to Ontario and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and American Airlines - these airlines can fly you to your destination from $205 and $264, respectively. Frontier is currently priced 63% below the average price you’ll pay for this route.

  • What are the cheapest flights from Nashville to Ontario?

    While on average a flight from Nashville to Ontario is generally $457, our data shows the cheapest flight currently is $285. When looking at the most popular route, (Nashville Intl - Ontario), you can expect to pay $213 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Nashville to Ontario 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 Nashville to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Nashville to Ontario (average of $73). Flying from Nashville to Ontario in December is currently the most expensive (average of $197). 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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Top 5 airlines flying from Nashville to Ontario

Discover the top 5 airlines that operate flights from Nashville to Ontario. 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 octubre 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$145Average$265FlexibilityNo cancel feeOn-time62%
DeltaCheapest$205Average$319FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$264Average$371FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$288Average$413FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$358Average$510FlexibilityNo cancel feeOn-time63%

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