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 75% of people opting to fly with this airline when traveling to Greenville. Keep in mind that there are 7 different airlines that fly to Greenville on a routine basis, so you have a few additional options to choose from.

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

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

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 November 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.

$235 Cheap Flights from Ontario to Greenville in 2025/26

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Find the cheapest flights from Ontario to Greenville

Round-trip

One-way

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Cheap round-trip flights

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10:20 pm - 9:21 amONT-GSP

8h 01m1 stop

3:00 pm - 9:07 pmGSP-ONT

9h 07m1 stop

$367Delta

Find Deal

ter, fev 24 - ter, mar 3

4:54 pm - 9:21 amONT-GSP

13h 27m2 stops

3:00 pm - 9:07 pmGSP-ONT

9h 07m1 stop

$372Delta

Find Deal

ter, fev 24 - ter, mar 3

10:40 pm - 8:38 amONT-GSP

6h 58m1 stop

1:49 pm - 7:57 pmGSP-ONT

9h 08m1 stop

$374American Airlines

Find Deal

qui, fev 12 - ter, fev 17

9:53 am - 10:35 pmONT-GSP

9h 42m2 stops

8:43 am - 4:25 pmGSP-ONT

10h 42m2 stops

$377American Airlines

Find Deal

ter, fev 24 - ter, mar 3

5:25 am - 2:30 pmONT-GSP

6h 05m1 stop

3:05 pm - 7:15 pmGSP-ONT

7h 10m1 stop

$378Southwest

Find Deal

qua, dez 3 - seg, dez 8

5:45 am - 7:40 pmONT-GSP

10h 55m2 stops

3:05 pm - 7:15 pmGSP-ONT

7h 10m1 stop

$383Southwest

Find Deal

qua, dez 3 - seg, dez 8

6:00 am - 7:05 pmONT-GSP

10h 05m1 stop

10:45 am - 7:05 pmGSP-ONT

11h 20m2 stops

$385Southwest

Find Deal

qui, fev 12 - ter, fev 17

6:10 am - 7:40 pmONT-GSP

10h 30m2 stops

7:40 am - 2:30 pmGSP-ONT

9h 50m2 stops

$388Southwest

Find Deal

qua, dez 3 - seg, dez 8

6:39 pm - 11:54 amONT-GSP

14h 15m2 stops

5:36 pm - 10:25 pmGSP-ONT

7h 49m1 stop

$408United Airlines

Find Deal

dom, dez 21 - qua, dez 31

11:59 pm - 10:56 amONT-GSP

7h 57m1 stop

5:36 pm - 10:25 pmGSP-ONT

7h 49m1 stop

$459United Airlines

Find Deal

qua, dez 24 - qua, dez 31

Southwest flights from Ontario to Greenville

Our best Southwest deals on Ontario to Greenville flight tickets

Southwest

Dec 3

ONT5:25 amOntario

6h 05m

1 stop

GSP2:30 pmGreenville

Dec 8

GSP3:05 pmGreenville

7h 10m

1 stop

ONT7:15 pmOntario

$378

Find similar

Southwest

Dec 3

ONT5:45 amOntario

10h 55m

2 stops

GSP7:40 pmGreenville

Dec 8

GSP3:05 pmGreenville

7h 10m

1 stop

ONT7:15 pmOntario

$383

Find similar

Southwest

Feb 12

ONT6:00 amOntario

10h 05m

1 stop

GSP7:05 pmGreenville

Feb 17

GSP10:45 amGreenville

11h 20m

2 stops

ONT7:05 pmOntario

$385

Find similar

United Airlines flights from Ontario to Greenville

Our best United Airlines deals on Ontario to Greenville flight tickets

United Airlines

Dec 21

ONT6:39 pmOntario

14h 15m

2 stops

GSP11:54 amGreenville

Dec 31

GSP5:36 pmGreenville

7h 49m

1 stop

ONT10:25 pmOntario

$408

Find similar

United Airlines

Dec 24

ONT11:59 pmOntario

7h 57m

1 stop

GSP10:56 amGreenville

Dec 31

GSP5:36 pmGreenville

7h 49m

1 stop

ONT10:25 pmOntario

$459

Find similar

United Airlines

Dec 24

ONT11:59 pmOntario

7h 57m

1 stop

GSP10:56 amGreenville

Dec 30

GSP5:36 pmGreenville

7h 49m

1 stop

ONT10:25 pmOntario

$463

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

ter 2/24

10:20 pm-9:21 am

1 stop8h 01m

Greenville

ter 3/3

3:00 pm-9:07 pm

1 stop9h 07m

$367

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

ter 2/24

4:54 pm-9:21 am

2 stops13h 27m

Greenville

ter 3/3

3:00 pm-9:07 pm

1 stop9h 07m

$372

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

qui 2/12

10:40 pm-8:38 am

1 stop6h 58m

Greenville

ter 2/17

1:49 pm-7:57 pm

1 stop9h 08m

$374

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

ter 2/24

9:53 am-10:35 pm

2 stops9h 42m

Greenville

ter 3/3

8:43 am-4:25 pm

2 stops10h 42m

$377

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

qua 12/3

5:25 am-2:30 pm

1 stop6h 05m

Greenville

seg 12/8

3:05 pm-7:15 pm

1 stop7h 10m

$378

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

qua 12/3

5:45 am-7:40 pm

2 stops10h 55m

Greenville

seg 12/8

3:05 pm-7:15 pm

1 stop7h 10m

$383

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

qui 2/12

6:00 am-7:05 pm

1 stop10h 05m

Greenville

ter 2/17

10:45 am-7:05 pm

2 stops11h 20m

$385

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

qua 12/3

6:10 am-7:40 pm

2 stops10h 30m

Greenville

seg 12/8

7:40 am-2:30 pm

2 stops9h 50m

$388

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

dom 12/21

6:39 pm-11:54 am

2 stops14h 15m

Greenville

qua 12/31

5:36 pm-10:25 pm

1 stop7h 49m

$408

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

qua 12/24

11:59 pm-10:56 am

1 stop7h 57m

Greenville

qua 12/31

5:36 pm-10:25 pm

1 stop7h 49m

$459

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 $294. 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

Direct flights	None

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

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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 5h 41m.
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 November 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 67% of all bookings. The subsequent popular airline is Delta at 33%.

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 8,004 reviews		Search Delta flights
American Airlines	PriceFrom $302	Free Cancellation	Rating 7.2 11,042 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.