What is the cheapest airline that flies from Ontario to Greenville?

Delta, American Airlines, and United Airlines are the most popular carriers operating from Ontario to Greenville

What airlines fly to Greenville?

American Airlines, Delta and Spirit Airlines are the top three most popular airlines that fly to Greenville from Ontario according to our data. American Airlines is the first choice among our users, with 77% of people opting to fly with this airline when traveling to Greenville. Keep in mind that there are 8 different airlines that fly to Greenville on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Ontario Airport to Greenville Airport?

Prices for flights from Ontario Airport to Greenville Airport were last updated today.

How many operators does momondo search for flights from Ontario Airport to Greenville Airport?

As of December 2025, there are 2 operators available to choose from for flights from Ontario Airport to Greenville Airport.

How old do you have to be to fly from Ontario Airport to Greenville Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Greenville Airport.

What documentation or ID do you need to fly to Greenville Airport?

The necessary travel and health documents for your Greenville Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$154 Cheap Flights from Ontario to Greenville in 2025/26

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Find the cheapest flights from Ontario to Greenville

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Cheap round-trip flights

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10:58 am - 8:56 pm

ONT

GSP

6h 58m1 stop

4:40 pm - 10:48 pm

GSP

ONT

9h 08m1 stop

$420American Airlines

Thu, Jan 22 - Sun, Jan 25

9:59 am - 11:57 pm

ONT

GSP

10h 58m2 stops

4:40 pm - 10:48 pm

GSP

ONT

9h 08m1 stop

$425American Airlines

Thu, Jan 22 - Sun, Jan 25

6:22 am - 5:09 pm

ONT

GSP

7h 47m2 stops

12:09 pm - 6:20 pm

GSP

ONT

9h 11m2 stops

$430American Airlines

Thu, Jan 22 - Sun, Jan 25

10:30 pm - 9:26 am

ONT

GSP

7h 56m1 stop

5:40 am - 11:35 am

GSP

ONT

8h 55m1 stop

$447Delta

Tue, Mar 10 - Tue, Mar 17

6:00 am - 5:29 pm

ONT

GSP

8h 29m2 stops

5:40 am - 11:35 am

GSP

ONT

8h 55m1 stop

$452Delta

Tue, Mar 10 - Tue, Mar 17

5:05 am - 3:20 pm

ONT

GSP

7h 15m1 stop

4:50 pm - 9:59 pm

GSP

ONT

8h 09m1 stop

$477United Airlines

Sat, Jan 31 - Wed, Feb 4

6:00 am - 3:35 pm

ONT

GSP

6h 35m1 stop

10:37 am - 9:59 pm

GSP

ONT

14h 22m2 stops

$482United Airlines

Sat, Jan 31 - Wed, Feb 4

6:00 am - 8:47 pm

ONT

GSP

11h 47m2 stops

10:37 am - 9:59 pm

GSP

ONT

14h 22m2 stops

$487United Airlines

Sat, Jan 31 - Wed, Feb 4

6:00 am - 3:35 pm

ONT

GSP

6h 35m1 stop

4:50 pm - 9:58 pm

GSP

ONT

8h 08m1 stop

$493United Airlines

Thu, Jan 8 - Mon, Jan 12

6:00 am - 3:35 pm

ONT

GSP

6h 35m1 stop

10:51 am - 9:58 pm

GSP

ONT

14h 07m2 stops

$498United Airlines

Thu, Jan 8 - Mon, Jan 12

American Airlines flights from Ontario to Greenville

Our best American Airlines deals on Ontario to Greenville flight tickets

American Airlines

Jan 22

ONT10:58 amOntario

6h 58m

1 stop

GSP8:56 pmGreenville

Jan 25

GSP4:40 pmGreenville

9h 08m

1 stop

ONT10:48 pmOntario

$420

Find similar

American Airlines

Jan 22

ONT9:59 amOntario

10h 58m

2 stops

GSP11:57 pmGreenville

Jan 25

GSP4:40 pmGreenville

9h 08m

1 stop

ONT10:48 pmOntario

$425

Find similar

American Airlines

Jan 22

ONT6:22 amOntario

7h 47m

2 stops

GSP5:09 pmGreenville

Jan 25

GSP12:09 pmGreenville

9h 11m

2 stops

ONT6:20 pmOntario

$430

Find similar

Delta flights from Ontario to Greenville

Our best Delta deals on Ontario to Greenville flight tickets

Delta

Mar 10

ONT10:30 pmOntario

7h 56m

1 stop

GSP9:26 amGreenville

Mar 17

GSP5:40 amGreenville

8h 55m

1 stop

ONT11:35 amOntario

$447

Find similar

Delta

Mar 10

ONT6:00 amOntario

8h 29m

2 stops

GSP5:29 pmGreenville

Mar 17

GSP5:40 amGreenville

8h 55m

1 stop

ONT11:35 amOntario

$452

Find similar

Delta

Dec 22

ONT7:05 amOntario

9h 08m

1 stop

GSP7:13 pmGreenville

Dec 28

GSP5:45 amGreenville

7h 15m

1 stop

ONT10:00 amOntario

$823

Find similar

Fly from

Fly to

Route

Depart

Return

Price

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

$420

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Thu 1/22

9:59 am-11:57 pm

2 stops10h 58m

Greenville

Sun 1/25

4:40 pm-10:48 pm

1 stop9h 08m

$425

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Thu 1/22

6:22 am-5:09 pm

2 stops7h 47m

Greenville

Sun 1/25

12:09 pm-6:20 pm

2 stops9h 11m

$430

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Tue 3/10

10:30 pm-9:26 am

1 stop7h 56m

Greenville

Tue 3/17

5:40 am-11:35 am

1 stop8h 55m

$447

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Tue 3/10

6:00 am-5:29 pm

2 stops8h 29m

Greenville

Tue 3/17

5:40 am-11:35 am

1 stop8h 55m

$452

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Sat 1/31

5:05 am-3:20 pm

1 stop7h 15m

Greenville

Wed 2/4

4:50 pm-9:59 pm

1 stop8h 09m

$477

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Sat 1/31

6:00 am-3:35 pm

1 stop6h 35m

Greenville

Wed 2/4

10:37 am-9:59 pm

2 stops14h 22m

$482

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Sat 1/31

6:00 am-8:47 pm

2 stops11h 47m

Greenville

Wed 2/4

10:37 am-9:59 pm

2 stops14h 22m

$487

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Thu 1/8

6:00 am-3:35 pm

1 stop6h 35m

Greenville

Mon 1/12

4:50 pm-9:58 pm

1 stop8h 08m

$493

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Thu 1/8

6:00 am-3:35 pm

1 stop6h 35m

Greenville

Mon 1/12

10:51 am-9:58 pm

2 stops14h 07m

$498

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to Greenville

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Greenville?

The month of September is another great option to travel to Greenville, with average flight prices from Ontario averaging around $302.

What is the cheapest day to depart on your flight to Greenville?

According to our data, Thursday is the cheapest day to fly to Greenville from Ontario. The lowest ticket price found for a Thursday departure recently was $122. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $307. These prices are subject to change though, so be sure to set up a Price Alert for flights to Greenville.

What is the cheapest time of day to depart on your flight to Greenville?

Our most recent data shows that the best time of day to fly to Greenville is in the morning. Flights from Ontario to Greenville during this time can be as low as $224. Flights to Greenville are more costly in the evening, with an average ticket price of $439. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

How have Ontario to Greenville flight prices changed over time?

When to book flights from Ontario to Greenville

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Greenville according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Ontario to Greenville (ONT to GSP) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Greenville

Fastest flight time	6h 25m
Direct flights	None

The fastest flight from Ontario to Greenville takes 6h 25m

There are no direct flights from Ontario to Greenville. There are no popular flight routes from Ontario to Greenville.

Search flight deals

How far is Ontario to Greenville by plane?
A flight from Ontario to Greenville will travel around 1997.5 mi. In terms of flight time, this usually takes a little over 6h 25m.
When did momondo last update prices for flights from Ontario Airport to Greenville Airport?
Prices for flights from Ontario Airport to Greenville Airport were last updated today.
How many operators does momondo search for flights from Ontario Airport to Greenville Airport?
As of December 2025, there are 2 operators available to choose from for flights from Ontario Airport to Greenville Airport.
How old do you have to be to fly from Ontario Airport to Greenville Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Greenville Airport.
What documentation or ID do you need to fly to Greenville Airport?
The necessary travel and health documents for your Greenville Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Ontario to Greenville?
momondo data reveals that the most frequently booked airline on the route from Ontario to Greenville is American Airlines, representing 70% of all bookings. The subsequent popular airline is Delta at 30%.

Best airlines flying from Ontario to Greenville

Compare and see reviews for airlines that fly from Ontario to Greenville with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $253	Free Cancellation	Rating 7.9 8,007 reviews		Search Delta flights
American Airlines	PriceFrom $302	Free Cancellation	Rating 7.2 11,054 reviews		Search American Airlines flights

Anderson

Simpsonville

Greenwood

Seneca

Greer

Duncan

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Greenville?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Greenville. momondo saves you time and could save you money on your trip.

Can I find flights from Ontario to Greenville with flexible booking policies on momondo?

All flight searches from Ontario to Greenville on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Ontario to Greenville?

momondo helps you find the best flight between Ontario and Greenville by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Ontario to Greenville right now. Can momondo alert me if prices change?

Price alerts on flights to Greenville from Ontario are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.