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Spartanburg

$125+ 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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — CLT
ago. 5 — ago. 121
mar. 8/5
mar. 8/12
1 adult, Economy
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Cheapflights Tip: The best prices from Ontario to Spartanburg are usually found in September or January, booked 37 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from Ontario to Spartanburg

Keep the following information in mind while searching for Ontario to Spartanburg flight deals. Data was last updated julio 31, 2025.

Round-trip from

$258
(Frontier)

One-way from

$125
(Frontier)

Popular in

December

Cheapest in

September

Average price

$455
From Ontario to Spartanburg
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One-way flight from Ontario to Spartanburg
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Highest demand for flights based on searches. 5% potential increase in price ($24 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find 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 julio 31, 2025.

This Frontier deal was found by Cheapflights users on 7/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/612:59 amONT - CLT
1 stop12h 27mFrontier
mar. 8/125:31 pmCLT - ONT
1 stop9h 19mFrontier
Deal found 7/29$258
This American Airlines deal was found by Cheapflights users on 7/31. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/3011:59 pmONT - CLT
Nonstop4h 41mAmerican Airlines
sáb. 9/67:27 pmCLT - ONT
Nonstop4h 57mAmerican Airlines
Deal found 7/31$304
This Delta deal was found by Cheapflights users on 7/31. 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.
sáb. 8/307:05 amONT - CLT
1 stop7h 43mDelta
mié. 9/35:29 pmCLT - ONT
1 stop8h 11mDelta
Deal found 7/31$315
This Southwest deal was found by Cheapflights users on 7/31. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/308:45 amONT - CLT
1 stop8h 45mSouthwest
mié. 9/310:50 amCLT - ONT
1 stop10h 35mSouthwest
Deal found 7/31$336
This Tripair deal was found by Cheapflights users on 7/30. 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 Tripair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/301:19 pmONT - CLT
1 stop6h 34mUnited Airlines
sáb. 9/68:30 amCLT - ONT
1 stop7h 02mUnited Airlines
Deal found 7/30$403

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 julio 31, 2025.
Use the filters below to find and compare flights from Ontario to Spartanburg that are best for you.

Fly from

Ontario

Fly to

Spartanburg

Route

Depart

Return

Price

OntarioCharlotte

ONT - CLT

ONTCLT

Ontario

lun. 8/11

12:59 am-4:36 pm

1 stop12h 37m

Charlotte Douglas

vie. 8/15

11:26 am-6:27 pm

1 stop10h 01m

$258

OntarioCharlotte

ONT - CLT

ONTCLT

Ontario

sáb. 8/30

11:59 pm-7:40 am

Nonstop4h 41m

Charlotte Douglas

sáb. 9/6

7:27 pm-9:24 pm

Nonstop4h 57m

$304

OntarioCharlotte

ONT - CLT

ONTCLT

Ontario

sáb. 8/30

7:05 am-5:48 pm

1 stop7h 43m

Charlotte Douglas

mié. 9/3

5:29 pm-10:40 pm

1 stop8h 11m

$315

OntarioCharlotte

ONT - CLT

ONTCLT

Ontario

sáb. 8/30

8:45 am-8:30 pm

1 stop8h 45m

Charlotte Douglas

mié. 9/3

10:50 am-6:25 pm

1 stop10h 35m

$336

OntarioCharlotte

ONT - CLT

ONTCLT

Ontario

sáb. 8/30

1:19 pm-10:53 pm

1 stop6h 34m

Charlotte Douglas

sáb. 9/6

8:30 am-12:32 pm

1 stop7h 02m

$403

OntarioCharlotte

ONT - CLT

ONTCLT

Ontario

lun. 8/11

12:59 am-4:36 pm

1 stop12h 37m

$125

OntarioCharlotte

ONT - CLT

ONTCLT

Ontario

sáb. 8/30

11:59 pm-7:40 am

Nonstop4h 41m

$153

OntarioCharlotte

ONT - CLT

ONTCLT

Ontario

mié. 10/29

5:30 am-5:35 pm

2 stops9h 05m

$174

OntarioCharlotte

ONT - CLT

ONTCLT

Ontario

vie. 8/22

5:10 am-9:37 pm

2 stops13h 27m

$194

OntarioCharlotte

ONT - CLT

ONTCLT

Ontario

vie. 10/31

11:36 am-11:50 pm

1 stop9h 14m

$250

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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 July 25, 2025.

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 37 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, August is the cheapest month in which you can book a flight from Ontario to Spartanburg (average of $248). Flying from Ontario to Spartanburg in March is currently the most expensive (average of $328). 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 julio 31, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Spartanburg as you normally would.

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 December 16, 2024.

Travelers seeking maximum savings on their Ontario to Spartanburg flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Tuesday 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 julio 31, 2025.
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
4,246 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

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Southwest
8.0
Very good
4,246 reviews
Southwest
8.0
Very good
4,246 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

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Delta
8.0
Very good
7,981 reviews
Southwest
8.0
Very good
4,246 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

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
United Airlines
7.4
Good
8,900 reviews
Southwest
8.0
Very good
4,246 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

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,246 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

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Frontier
5.9
Fair
3,239 reviews
Southwest
8.0
Very good
4,246 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

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

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 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • 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 $125. American Airlines flights start at $153 while deals on Southwest start at $174 one-way.

  • What are the cheapest flights from Ontario to Spartanburg?

    While on average a flight from Ontario to Spartanburg is generally $541, our data shows the cheapest flight currently is $132. When looking at the most popular route, (Ontario - Charlotte Douglas), you can expect to pay $270 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, August is the cheapest month in which you can book a flight from Ontario to Spartanburg (average of $248). Flying from Ontario to Spartanburg in March is currently the most expensive (average of $328). 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 julio 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$128Average$178FlexibilityNo cancel feeOn-time62%
DeltaCheapest$216Average$444FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$268Average$439FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$296Average$375FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$305Average$436FlexibilityNo cancel feeOn-time63%

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