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Ontario

$70+ 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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
BNA — ONT
Mar 21 — Mar 281
Sat 3/21
Sat 3/28
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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Cheapflights Tip: The best prices from Nashville Intl to Ontario are usually found in August or November, booked 57 days in advance, depart on a Monday or Tuesday and return on a Tuesday

Cheap 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 February 19, 2026.

This Frontier deal was found by Cheapflights users on 2/16. 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 4/173:24 pm
BNA
-
ONT
1 stop10h 31m
Frontier
Sun 4/1912:59 am
ONT
-
BNA
1 stop11h 30m
Frontier
Deal found 2/16$190
This Kiwi.com deal was found by Cheapflights users on 2/17. 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.
Tue 3/173:01 pm
BNA
-
ONT
1 stop10h 58m
Frontier
Tue 3/242:23 pm
ONT
-
BNA
2 stops21h 53m
Frontier
Deal found 2/17$204
This Kiwi.com deal was found by Cheapflights users on 2/17. 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.
Tue 3/173:01 pm
BNA
-
ONT
1 stop10h 58m
Multiple Airlines
Tue 3/242:23 pm
ONT
-
BNA
1 stop12h 47m
Multiple Airlines
Deal found 2/17$208
This Frontier deal was found by Cheapflights users on 2/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3012:09 pm
BNA
-
ONT
1 stop13h 15m
Frontier
Sat 5/212:59 am
ONT
-
BNA
1 stop11h 30m
Frontier
Deal found 2/15$211
This Expedia deal was found by Cheapflights users on 2/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:00 am
BNA
-
ONT
1 stop10h 08m
Multiple Airlines
Tue 3/106:15 am
ONT
-
BNA
1 stop6h 01m
Multiple Airlines
Deal found 2/16$219
This Booking.com deal was found by Cheapflights users on 2/18. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/193:01 pm
BNA
-
ONT
1 stop10h 58m
Frontier
Wed 3/256:15 am
ONT
-
BNA
1 stop6h 01m
Frontier
Deal found 2/18$220
This CheapOair deal was found by Cheapflights users on 2/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/233:24 pm
BNA
-
ONT
1 stop18h 07m
Frontier
Sun 5/35:33 pm
ONT
-
BNA
1 stop18h 56m
Frontier
Deal found 2/18$222
This Mytrip deal was found by Cheapflights users on 2/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/237:35 pm
BNA
-
ONT
1 stop27h 59m
Frontier
Mon 3/26:10 am
ONT
-
BNA
1 stop10h 40m
Frontier
Deal found 2/16$223
This Booking.com deal was found by Cheapflights users on 2/18. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/133:14 pm
BNA
-
ONT
1 stop10h 42m
Frontier
Fri 4/176:15 am
ONT
-
BNA
1 stop10h 26m
Frontier
Deal found 2/18$224
This Frontier deal was found by Cheapflights users on 2/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:35 pm
BNA
-
ONT
1 stop6h 24m
Frontier
Tue 3/106:15 am
ONT
-
BNA
1 stop6h 01m
Frontier
Deal found 2/18$230
This Expedia deal was found by Cheapflights users on 2/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/277:29 pm
BNA
-
ONT
1 stop6h 30m
Frontier
Mon 3/26:10 am
ONT
-
BNA
1 stop10h 40m
Frontier
Deal found 2/18$232
This Expedia deal was found by Cheapflights users on 2/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/277:29 pm
BNA
-
ONT
1 stop6h 30m
Multiple Airlines
Tue 3/312:02 pm
ONT
-
BNA
1 stop9h 57m
Multiple Airlines
Deal found 2/15$235

Find 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 February 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$190
(Frontier)

One-way from

$70
(Kiwi.com)

Popular in

October

Cheapest in

August

Average price

$352

Good round-trip deal

$457 or less

Good one-way deal

$258 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 ($29 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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 February 19, 2026.
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

Fri 5/1

3:24 pm-11:55 pm

1 stop10h 31m

Ontario

Sat 5/2

12:59 am-2:29 pm

1 stop11h 30m

$232

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Fri 4/24

4:35 pm-9:50 pm

1 stop7h 15m

Ontario

Tue 5/5

7:00 am-5:24 pm

1 stop8h 24m

$237

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Tue 4/28

4:35 pm-9:50 pm

1 stop7h 15m

Ontario

Tue 5/5

1:40 pm-9:57 pm

1 stop6h 17m

$237

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Thu 4/16

7:00 am-1:39 pm

1 stop8h 39m

Ontario

Sun 4/26

10:15 pm-8:52 am

1 stop8h 37m

$255

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Sat 4/18

5:25 am-11:36 am

1 stop8h 11m

Ontario

Fri 4/24

12:49 pm-11:24 pm

1 stop8h 35m

$255

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Tue 4/21

5:25 am-11:36 am

1 stop8h 11m

Ontario

Tue 4/21

10:15 pm-7:44 am

1 stop7h 29m

$255

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Fri 4/17

4:13 pm-9:00 pm

1 stop6h 47m

Ontario

Fri 4/24

12:49 pm-11:24 pm

1 stop8h 35m

$255

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Sat 4/18

7:20 am-12:14 pm

1 stop6h 54m

Ontario

Tue 4/21

10:15 pm-7:44 am

1 stop7h 29m

$255

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Thu 2/26

6:20 am-12:38 pm

1 stop8h 18m

Ontario

Mon 3/2

1:50 pm-10:59 pm

1 stop7h 09m

$257

NashvilleOntario

BNA - ONT

BNAONT

Nashville Intl

Wed 4/29

7:20 am-12:14 pm

1 stop6h 54m

Ontario

Tue 5/5

7:00 am-10:52 pm

2 stops13h 52m

$260

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/15

Showing 1-10 of 22 results
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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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapOairPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Nashville-Ontario flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 February 18, 2026.

Booking 57 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 January is currently the most expensive (average of $192). 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 February 19, 2026.

When flying from Nashville to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

The best insider tips for Nashville to Ontario flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Nashville to Ontario trip
Our travel experts
Bill Fink

Bill Fink

Expert on ONT

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 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 February 19, 2026.
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
4,295 reviews

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Overall

8.0

Food

7.0

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
4,295 reviews
Southwest
8.0
Very good
4,295 reviews

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Overall

8.0

Food

7.0

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
8,212 reviews
Southwest
8.0
Very good
4,295 reviews

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Overall

8.0

Food

7.0

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
9,321 reviews
Southwest
8.0
Very good
4,295 reviews

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Overall

8.0

Food

7.0

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
11,313 reviews
Southwest
8.0
Very good
4,295 reviews

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Overall

8.0

Food

7.0

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
5.7
Fair
3,048 reviews
Southwest
8.0
Very good
4,295 reviews

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Overall

8.0

Food

7.0

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.

  • What airports do I use to fly from Nashville to Ontario?

    If you wish to fly to Ontario from Nashville, then you need to book flights from Nashville Intl to Ontario. There is 1 flight from Nashville Intl (BNA) to Ontario (ONT) per day to choose from. Flights to Ontario from Nashville Intl are available from 5 different airlines, which means you should have some options if you want to compare airfare deals. 4h 05m is how long a nonstop flight from Nashville to Ontario typically takes.

  • 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 7h 15m. 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 $128, 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 $213 and $258, respectively. Frontier is currently priced 67% below the average price you’ll pay for this route.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $77. Users have also found prices from $128 and $132 on Delta and American Airlines, respectively.

  • What are the cheapest flights from Nashville to Ontario?

    While on average a flight from Nashville to Ontario is generally $418, our data shows the cheapest flight currently is $114. When looking at the most popular route, (Nashville Intl - Ontario), you can expect to pay $189 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 January is currently the most expensive (average of $192). 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 Nashville to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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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 February 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$128Average$252FlexibilityNo cancel feeOn-time62%
DeltaCheapest$213Average$288FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$258Average$392FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$284Average$365FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$385Average$515FlexibilityNo cancel feeOn-time63%

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