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Spartanburg

$65+ Cheap flights from Ontario (ONT) to Spartanburg, SC

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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — CLT
Mar 27 — Apr 31
Fri 3/27
Fri 4/3
1 adult, Economy
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Cheapflights Tip: The best prices from Ontario to Spartanburg are usually found in October or September, booked 66 days in advance, depart on a Tuesday or Friday and return on a Tuesday

Cheap flight deals from Ontario to Spartanburg

Cheapest flights from Ontario to Spartanburg
Explore the most affordable flight options available from Ontario to Spartanburg. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 25, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/24. 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 4/1312:59 am
ONT
-
CLT
1 stop14h 55m
Frontier
Tue 5/57:49 pm
CLT
-
ONT
1 stop31h 06m
Frontier
Deal found 2/24$131
This Kiwi.com deal was found by Cheapflights users on 2/22. 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 4/2012:59 am
ONT
-
CLT
1 stop14h 55m
Frontier
Sat 5/25:51 pm
CLT
-
ONT
1 stop9h 04m
Frontier
Deal found 2/22$172
This Kiwi.com deal was found by Cheapflights users on 2/24. 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 4/1412:59 am
ONT
-
CLT
1 stop14h 55m
Frontier
Tue 4/217:49 pm
CLT
-
ONT
1 stop31h 06m
Frontier
Deal found 2/24$173
This Kiwi.com deal was found by Cheapflights users on 2/23. 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 4/139:02 pm
ONT
-
CLT
2 stops18h 52m
Frontier
Wed 4/157:49 pm
CLT
-
ONT
1 stop14h 42m
Frontier
Deal found 2/23$184
This Kiwi.com deal was found by Cheapflights users on 2/22. 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 4/84:52 pm
ONT
-
CLT
2 stops17h 09m
Frontier
Tue 4/147:49 pm
CLT
-
ONT
1 stop31h 06m
Frontier
Deal found 2/22$191
This Kiwi.com deal was found by Cheapflights users on 2/21. 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 4/1312:59 am
ONT
-
CLT
1 stop14h 55m
Frontier
Sun 4/192:57 pm
CLT
-
ONT
2 stops22h 17m
Frontier
Deal found 2/21$199
This Frontier deal was found by Cheapflights users on 2/23. 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 4/2312:59 am
ONT
-
CLT
1 stop13h 36m
Frontier
Sun 4/264:36 pm
CLT
-
ONT
1 stop10h 20m
Frontier
Deal found 2/23$200
This Frontier deal was found by Cheapflights users on 2/24. 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 4/1712:59 am
ONT
-
CLT
1 stop12h 57m
Frontier
Sat 4/255:51 pm
CLT
-
ONT
1 stop16h 35m
Frontier
Deal found 2/24$201
This Booking.com deal was found by Cheapflights users on 2/21. 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.
Tue 4/76:20 am
ONT
-
CLT
1 stop9h 34m
Frontier
Thu 4/303:12 pm
CLT
-
ONT
1 stop28h 26m
Frontier
Deal found 2/21$202

Find flight deals from Ontario to Spartanburg

Keep the following information in mind while searching for Ontario to Spartanburg flight deals. Data was last updated February 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$131
(Kiwi.com)

One-way from

$65
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$416
Provider with most accurate pricing for Los Angeles-Charlotte Douglas flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Charlotte Douglas flights.
Search Deals
From Ontario to Spartanburg
Search Deals
One-way flight from Ontario to Spartanburg
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($46 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Spartanburg 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 25, 2026.
Use the filters below to find and compare flights from Ontario to Spartanburg that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioCharlotte

ONT - CLT

ONTCLT

Ontario

Tue 4/14

10:40 am-9:40 pm

2 stops8h 00m

Charlotte Douglas

Tue 5/5

1:45 pm-9:50 pm

2 stops11h 05m

$320

OntarioCharlotte

ONT - CLT

ONTCLT

Ontario

Sat 4/18

6:20 am-9:15 pm

2 stops11h 55m

Charlotte Douglas

Sat 5/9

6:10 am-3:35 pm

2 stops12h 25m

$347

OntarioCharlotte

ONT - CLT

ONTCLT

Ontario

Tue 3/10

10:35 am-10:05 pm

1 stop8h 30m

Charlotte Douglas

Thu 3/12

8:00 am-2:10 pm

1 stop9h 10m

$371

OntarioCharlotte

ONT - CLT

ONTCLT

Ontario

Mon 3/23

10:25 pm-8:40 am

1 stop7h 15m

Charlotte Douglas

Thu 4/2

5:24 pm-11:51 pm

1 stop9h 27m

$433

OntarioCharlotte

ONT - CLT

ONTCLT

Ontario

Mon 3/23

10:25 pm-8:40 am

1 stop7h 15m

Charlotte Douglas

Wed 4/1

5:30 am-11:47 am

1 stop9h 17m

$448

OntarioCharlotte

ONT - CLT

ONTCLT

Ontario

Wed 3/25

9:55 pm-10:15 am

1 stop9h 20m

Charlotte Douglas

Mon 3/30

8:00 am-2:10 pm

1 stop9h 10m

$448

OntarioCharlotte

ONT - CLT

ONTCLT

Ontario

Tue 6/30

7:00 am-6:14 pm

1 stop8h 14m

Charlotte Douglas

Fri 7/3

5:25 pm-11:44 pm

1 stop9h 19m

$456

OntarioCharlotte

ONT - CLT

ONTCLT

Ontario

Thu 6/11

5:05 pm-8:47 am

2 stops12h 42m

Charlotte Douglas

Tue 6/16

3:00 pm-11:44 pm

2 stops11h 44m

$467

OntarioCharlotte

ONT - CLT

ONTCLT

Ontario

Fri 5/29

8:10 am-9:50 pm

2 stops10h 40m

Charlotte Douglas

Mon 6/1

12:45 pm-9:15 pm

2 stops11h 30m

$467

OntarioCharlotte

ONT - CLT

ONTCLT

Ontario

Fri 5/15

8:10 am-9:50 pm

2 stops10h 40m

Charlotte Douglas

Mon 5/18

6:15 am-1:10 pm

2 stops9h 55m

$467

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/22

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

Best time to book a flight from Ontario to Spartanburg

Have a flexible travel schedule? Discover the best time to fly to Spartanburg 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 Spartanburg

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

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Spartanburg. Price data was last updated on February 20, 2026.

The price you pay for your flight from Ontario to Spartanburg may vary depending on when you book. For the best chance of a lower fare, look to book 42 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, May is the cheapest month in which you can book a flight from Ontario to Spartanburg (average of $121). Flying from Ontario to Spartanburg in January is currently the most expensive (average of $258). 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 SB1?

Find hourly flight availability from Ontario to Spartanburg. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 25, 2026.

A simple way to save on the total cost of your ticket is to fly from Ontario to Spartanburg in the afternoon. If you’re flexible enough to do this you can expect to save up to 51% on your trip compared to booking a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Ontario to Spartanburg. Price data was last updated on February 21, 2026.

Travelers seeking maximum savings on their Ontario to Spartanburg flight should consider departing on Tuesday evenings 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 Spartanburg

Get insights into the airlines that provide service to Spartanburg. 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 Spartanburg. Reviews last updated February 25, 2026.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from Ontario to Spartanburg 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
4,300 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

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
8.0
Very good
4,300 reviews
Southwest
8.0
Very good
4,300 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

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
8,237 reviews
Southwest
8.0
Very good
4,300 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

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
9,345 reviews
Southwest
8.0
Very good
4,300 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

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
11,345 reviews
Southwest
8.0
Very good
4,300 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

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
5.7
Fair
3,041 reviews
Southwest
8.0
Very good
4,300 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

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 Spartanburg. 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 Spartanburg?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Spartanburg. 5 airlines have flights from Ontario to Spartanburg on a regular basis. Booking flights from Ontario to Spartanburg should not be difficult; the airport handles an average of 0 outbound flights to Spartanburg per day.

  • How popular is this Ontario to Spartanburg flight route?

    This flight path from Ontario to Spartanburg was viewed by 2 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Ontario to Spartanburg?

    Southwest and Delta can get you from Ontario to Spartanburg in just under 7h 15m. Your travel time can differ by up to 45m. Airlines will cover a distance of 2072 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $78. Delta flights start at $153 while deals on American Airlines start at $154 one-way.

  • What are the cheapest flights from Ontario to Spartanburg?

    While on average a flight from Ontario to Spartanburg is generally $444, our data shows the cheapest flight currently is $128. When looking at the most popular route, (Ontario - Charlotte Douglas), you can expect to pay $200 for that flight.

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

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

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

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

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

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

    Currently, May is the cheapest month in which you can book a flight from Ontario to Spartanburg (average of $121). Flying from Ontario to Spartanburg in January is currently the most expensive (average of $258). 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 Ontario to Spartanburg

Discover the top 5 airlines that operate flights from Ontario to Spartanburg. 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 25, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$89Average$241FlexibilityNo cancel feeOn-time62%
DeltaCheapest$153Average$411FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$208Average$395FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$288Average$430FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$305Average$465FlexibilityNo cancel feeOn-time63%

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