How long is the flight from Ontario to Greenville?

Departing from Ontario to Greenville will take you 6h 58m. The distance between Ontario and Greenville is about 2004 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 flying from Ontario to Greenville round-trip?

According to our current data, Delta ($253), and American Airlines ($302) offers the cheapest pricing from Ontario to Greenville. These flights start at 38% lower than the current average price 3 months from now.

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

One-way options have recently been found by users for as low as $260 on United Airlines. Other airlines that offer cheap prices include American Airlines from $274 and Delta from $274 one-way.

In terms of precipitation, rainfall in Greenville ranges from 3.6 - 5.1 inches per month. March is typically the wettest month, when rainfall can reach 5.1 in. November is typically the driest time to visit Greenville when rainfall is around 3.6 in.

If weather is an important factor for your trip to Greenville, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

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

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

Most accurate provider : When it comes to deals on Ontario-Greenville flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Greenville flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ontario-Greenville flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Ontario-Greenville flights, Cheapflights users trust eDreams the most. eDreams 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 Ontario-Greenville flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

How can I find direct flights from Ontario to Greenville?

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

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

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

$260+ Flights from Ontario to Greenville

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Ontario to Greenville 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”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from Ontario to Greenville

Cheapest flights from Ontario to Greenville
Explore the most affordable flight options available from Ontario to Greenville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.

Wed 11/2610:25 pmONT - GSP

1 stop7h 37mDelta

Thu 11/273:02 pmGSP - ONT

1 stop7h 40mDelta

Deal found 10/27

$433

Mon 11/2410:34 pmONT - GSP

1 stop7h 01mAmerican Airlines

Fri 11/286:00 amGSP - ONT

1 stop8h 53mAmerican Airlines

Deal found 10/27

$473

Mon 11/2410:25 pmONT - GSP

1 stop7h 37mDelta

Thu 11/273:02 pmGSP - ONT

1 stop7h 40mDelta

Deal found 10/27

$493

Wed 11/1210:25 pmONT - GSP

1 stop7h 37mDelta

Sun 11/165:35 amGSP - ONT

1 stop8h 31mDelta

Deal found 10/28

$518

Wed 10/296:05 amONT - GSP

1 stop6h 34mUnited Airlines

Fri 10/3112:05 pmGSP - ONT

2 stops13h 46mUnited Airlines

Deal found 10/25

$533

Best flights from Ontario to Greenville
Discover carefully curated flight deals from Ontario to Greenville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 28, 2025.

Tue 2/241:00 pmONT - GSP

1 stop7h 36mDelta

Tue 3/33:00 pmGSP - ONT

1 stop9h 14mDelta

Deal found 10/28

$359

Thu 1/2210:58 amONT - GSP

1 stop6h 58mAmerican Airlines

Sun 1/254:40 pmGSP - ONT

1 stop9h 08mAmerican Airlines

Deal found 10/27

$403

Wed 12/2411:59 pmONT - GSP

1 stop7h 57mUnited Airlines

Wed 12/315:36 pmGSP - ONT

2 stops27h 07mUnited Airlines

Deal found 10/28

$509

Mon 11/249:59 amONT - GSP

2 stops10h 12mAmerican Airlines

Fri 11/286:00 amGSP - ONT

1 stop8h 53mAmerican Airlines

Deal found 10/27

$478

Mon 11/2410:25 pmONT - GSP

1 stop7h 37mDelta

Thu 11/273:02 pmGSP - ONT

1 stop7h 40mDelta

Deal found 10/27

$493

Thu 12/255:05 amONT - GSP

2 stops8h 56mUnited Airlines

Wed 12/315:36 pmGSP - ONT

2 stops27h 07mUnited Airlines

Deal found 10/28

$566

Tue 3/318:02 pmONT - GSP

2 stops11h 02mAmerican Airlines

Wed 4/14:18 pmGSP - ONT

1 stop8h 44mAmerican Airlines

Deal found 10/27

$552

Tue 11/2512:16 pmONT - GSP

1 stop17h 46mDelta

Thu 11/271:58 pmGSP - ONT

1 stop8h 44mDelta

Deal found 10/27

$573

Last-minute flights from Ontario to Greenville
Discover last-minute flight deals from Ontario to Greenville. Data last updated October 28, 2025 and is based on user searches.

Wed 10/296:05 amONT - GSP

1 stop6h 34mUnited Airlines

Fri 10/3112:05 pmGSP - ONT

2 stops13h 46mUnited Airlines

Deal found 10/25

$533

Wed 11/1210:25 pmONT - GSP

1 stop7h 37mDelta

Sun 11/165:35 amGSP - ONT

1 stop8h 31mDelta

Deal found 10/28

$518

Mon 11/2410:34 pmONT - GSP

1 stop7h 01mAmerican Airlines

Fri 11/286:00 amGSP - ONT

1 stop8h 53mAmerican Airlines

Deal found 10/27

$473

Mon 11/2410:25 pmONT - GSP

1 stop7h 37mDelta

Thu 11/273:02 pmGSP - ONT

1 stop7h 40mDelta

Deal found 10/27

$493

Wed 11/2610:25 pmONT - GSP

1 stop7h 37mDelta

Thu 11/271:58 pmGSP - ONT

1 stop8h 44mDelta

Deal found 10/27

$433

One-way flights from Ontario to Greenville
Search for one-way flight options from Ontario to Greenville. Find affordable one-way fares based on user searches. Data last updated October 28, 2025.

Wed 12/105:05 amONT - GSP

1 stop7h 10mUnited Airlines

Deal found 10/27

$260

Sat 12/2710:29 pmONT - GSP

1 stop7h 50mDelta

Deal found 10/28

$274

Sun 12/287:18 pmONT - GSP

2 stops10h 18mAmerican Airlines

Deal found 10/27

$279

Tue 11/117:00 amONT - GSP

1 stop6h 53mUnited Airlines

Deal found 10/26

$304

Sat 1/310:40 pmONT - GSP

1 stop6h 56mAmerican Airlines

Deal found 10/26

$317

Sat 12/2712:55 pmONT - GSP

2 stops7h 57mAmerican Airlines

Deal found 10/26

$322

Thu 12/41:50 pmONT - GSP

2 stops18h 54mUnited Airlines

Deal found 10/28

$370

Fri 10/311:40 pmONT - GSP

2 stops22h 19mUnited Airlines

Deal found 10/26

$483

Sun 1/411:59 pmONT - GSP

1 stop7h 57mUnited Airlines

Deal found 10/25

$523

Fri 1/26:04 amONT - GSP

1 stop12h 53mUnited Airlines

Deal found 10/27

$558

Cheap flight deals from Ontario to Greenville

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$359 (Delta)
One-way from	$260 (United Airlines)
Popular in	February
Cheapest in	October
Average price	$283

Provider with most accurate pricing for Ontario-Greenville flight deals.

Search Deals

Provider most trusted by Cheapflights users for Ontario-Greenville flights.

Search Deals

From Ontario to Greenville

Search Deals

One-way flight from Ontario to Greenville

Search Deals

Highest demand for flights based on searches. 12% potential increase in price ($58 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Tue 2/24

1:00 pm-11:36 pm

1 stop7h 36m

Greenville

Tue 3/3

3:00 pm-9:14 pm

1 stop9h 14m

$359

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Thu 1/22

10:58 am-8:56 pm

1 stop6h 58m

Greenville

Sun 1/25

4:40 pm-10:48 pm

1 stop9h 08m

$403

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Mon 11/24

9:59 am-11:11 pm

2 stops10h 12m

Greenville

Fri 11/28

6:00 am-11:53 am

1 stop8h 53m

$478

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Mon 11/24

10:25 pm-9:02 am

1 stop7h 37m

Greenville

Thu 11/27

3:02 pm-7:42 pm

1 stop7h 40m

$493

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Wed 12/24

11:59 pm-10:56 am

1 stop7h 57m

Greenville

Wed 12/31

5:36 pm-5:43 pm

2 stops27h 07m

$509

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Tue 3/31

8:02 pm-10:04 am

2 stops11h 02m

Greenville

Wed 4/1

4:18 pm-10:02 pm

1 stop8h 44m

$552

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Thu 12/25

5:05 am-5:01 pm

2 stops8h 56m

Greenville

Wed 12/31

5:36 pm-5:43 pm

2 stops27h 07m

$566

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Tue 11/25

12:16 pm-9:02 am

1 stop17h 46m

Greenville

Thu 11/27

1:58 pm-7:42 pm

1 stop8h 44m

$573

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Wed 12/10

5:05 am-3:15 pm

1 stop7h 10m

$260

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Sun 12/28

11:59 pm-11:28 am

1 stop8h 29m

$274

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 14 results

Compare providers for flights from Ontario to Greenville

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Greenville in October.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust 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 Ontario-Greenville flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Greenville flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ontario-Greenville flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Ontario-Greenville flights, Cheapflights users trust eDreams the most. eDreams 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 Ontario-Greenville 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 Ontario to Greenville

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

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

Currently, January is the cheapest month in which you can book a flight from Ontario to Greenville (average of $42). Flying from Ontario to Greenville in March is currently the most expensive (average of $227). 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.

Reviews of airlines servicing Greenville

Peruse reviews from past customers who have flown with Delta and American Airlines from Ontario to Greenville to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

7.9

Good

7,994 reviews

Reviews

1 / 20

10.0

Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

Delta

7.9

Good

7,994 reviews

Delta

7.9

Good

7,994 reviews

Reviews

1 / 20

10.0

Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

American Airlines

7.2

Good

11,032 reviews

Delta

7.9

Good

7,994 reviews

Reviews

1 / 20

10.0

Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

Related info for your journey

How long is the flight from Ontario to Greenville?
Departing from Ontario to Greenville will take you 6h 58m. The distance between Ontario and Greenville is about 2004 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 flying from Ontario to Greenville round-trip?
According to our current data, Delta ($253), and American Airlines ($302) offers the cheapest pricing from Ontario to Greenville. These flights start at 38% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from Ontario to Greenville one-way?
One-way options have recently been found by users for as low as $260 on United Airlines. Other airlines that offer cheap prices include American Airlines from $274 and Delta from $274 one-way.
Can I find deals for flights from Ontario to Greenville that include hotel bookings?
Yes. In addition to deals on Ontario to Greenville flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to Greenville?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Greenville.
Can I find deals for business class flights from Ontario to Greenville?
Yes. Cheapflights offers flight deals from Ontario to Greenville 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 Greenville?
Currently, January is the cheapest month in which you can book a flight from Ontario to Greenville (average of $42). Flying from Ontario to Greenville in March is currently the most expensive (average of $227). 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

Simpsonville

Duncan

Greer

Seneca

Anderson

Browse thousands of different options on Cheapflights for your next trip

Top 2 airlines flying from Ontario to Greenville

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$302	Average$399	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$398	Average$558	FlexibilityNo cancel fee	On-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$260+ Cheap flights from Ontario to Greenville (ONT - GSP)

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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Greenville with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Ontario to Greenville

Cheapest flights from Ontario to GreenvilleExplore the most affordable flight options available from Ontario to Greenville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.

Explore the most affordable flight options available from Ontario to Greenville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.

Cheap flight deals from Ontario to Greenville

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Greenville that are best for you.

Compare providers for flights from Ontario to Greenville

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 Ontario to Greenville in October.

Best time to book a flight from Ontario to Greenville

Have a flexible travel schedule? Discover the best time to fly to Greenville from Ontario with our price prediction graph.

Cheapflights Insights

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

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

Reviews of airlines servicing Greenville

Peruse reviews from past customers who have flown with Delta and American Airlines from Ontario to Greenville to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

How long is the flight from Ontario to Greenville?

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

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

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

How can I find direct flights from Ontario to Greenville?

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

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

Traveling to a place near Greenville?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Greenville

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Ontario to Greenville

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Ontario to Greenville
Explore the most affordable flight options available from Ontario to Greenville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.