Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Ontario to Greenville from $234

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Greenville departing on 7/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Greenville

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
12:33 pm - 10:17 pm
ONT
-
GSP
6h 44m
1 stop
American Airlines Logo
7:00 am - 11:43 am
GSP
-
ONT
7h 43m
1 stop
$403American Airlines
Wed, Aug 19 - Tue, Aug 25
United Airlines Logo
7:00 am - 5:02 pm
ONT
-
GSP
7h 02m
1 stop
United Airlines Logo
10:33 am - 8:01 pm
GSP
-
ONT
12h 28m
2 stops
$408United Airlines
Wed, Aug 19 - Tue, Aug 25
Southwest Logo
9:40 am - 8:55 pm
ONT
-
GSP
8h 15m
2 stops
Southwest Logo
7:00 am - 2:05 pm
GSP
-
ONT
10h 05m
2 stops
$413Southwest
Wed, Aug 19 - Tue, Aug 25
American Airlines Logo
7:00 am - 4:36 pm
ONT
-
GSP
6h 36m
1 stop
American Airlines Logo
8:01 pm - 11:59 pm
GSP
-
ONT
6h 58m
1 stop
$464American Airlines
Fri, Jul 10 - Fri, Jul 17
Delta Logo
10:00 pm - 9:18 am
ONT
-
GSP
8h 18m
1 stop
Delta Logo
5:46 am - 10:42 am
GSP
-
ONT
7h 56m
1 stop
$467Delta
Mon, Aug 3 - Sun, Aug 9
American Airlines Logo
5:34 am - 4:36 pm
ONT
-
GSP
8h 02m
1 stop
American Airlines Logo
5:28 pm - 10:32 pm
GSP
-
ONT
8h 04m
1 stop
$477American Airlines
Wed, Jul 8 - Wed, Jul 15
American Airlines Logo
10:22 am - 10:56 pm
ONT
-
GSP
9h 34m
1 stop
American Airlines Logo
7:01 am - 1:22 pm
GSP
-
ONT
9h 21m
1 stop
$502American Airlines
Tue, Jun 30 - Wed, Jul 29
American Airlines Logo
11:59 pm - 2:07 pm
ONT
-
GSP
11h 08m
2 stops
American Airlines Logo
4:07 pm - 10:34 pm
GSP
-
ONT
9h 27m
1 stop
$507American Airlines
Tue, Jun 30 - Wed, Jul 29
United Airlines Logo
5:00 am - 3:19 pm
ONT
-
GSP
7h 19m
1 stop
United Airlines Logo
4:33 pm - 8:53 pm
GSP
-
ONT
7h 20m
1 stop
$513United Airlines
Tue, Jul 14 - Tue, Sep 22
Southwest Logo
5:45 am - 7:00 pm
ONT
-
GSP
10h 15m
2 stops
Southwest Logo
12:50 pm - 7:00 pm
GSP
-
ONT
9h 10m
2 stops
$517Southwest
Wed, Jul 8 - Wed, Jul 15

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

American Airlines flights from Ontario to Greenville

Our best American Airlines deals on Ontario to Greenville flight tickets
American Airlines
Aug 19
ONT12:33 pmOntario
6h 44m
1 stop
GSP10:17 pmGreenville
Aug 25
GSP7:00 amGreenville
7h 43m
1 stop
ONT11:43 amOntario
$403
American Airlines
Jul 10
ONT7:00 amOntario
6h 36m
1 stop
GSP4:36 pmGreenville
Jul 17
GSP8:01 pmGreenville
6h 58m
1 stop
ONT11:59 pmOntario
$464
American Airlines
Jul 8
ONT5:34 amOntario
8h 02m
1 stop
GSP4:36 pmGreenville
Jul 15
GSP5:28 pmGreenville
8h 04m
1 stop
ONT10:32 pmOntario
$477

United Airlines flights from Ontario to Greenville

Our best United Airlines deals on Ontario to Greenville flight tickets
United Airlines
Aug 19
ONT7:00 amOntario
7h 02m
1 stop
GSP5:02 pmGreenville
Aug 25
GSP10:33 amGreenville
12h 28m
2 stops
ONT8:01 pmOntario
$408
United Airlines
Jul 14
ONT5:00 amOntario
7h 19m
1 stop
GSP3:19 pmGreenville
Sep 22
GSP4:33 pmGreenville
7h 20m
1 stop
ONT8:53 pmOntario
$513
United Airlines
Oct 27
ONT6:53 pmOntario
14h 03m
2 stops
GSP11:56 amGreenville
Oct 28
GSP5:15 pmGreenville
7h 06m
1 stop
ONT9:21 pmOntario
$518

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Greenville 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, momondo users made 832,500 searches. Data last updated June 8, 2026.
Use the filters below to find and compare flights from Ontario to Greenville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Wed 8/19

12:33 pm-10:17 pm

1 stop6h 44m

Greenville

Tue 8/25

7:00 am-11:43 am

1 stop7h 43m

$403

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Wed 8/19

7:00 am-5:02 pm

1 stop7h 02m

Greenville

Tue 8/25

10:33 am-8:01 pm

2 stops12h 28m

$408

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Wed 8/19

9:40 am-8:55 pm

2 stops8h 15m

Greenville

Tue 8/25

7:00 am-2:05 pm

2 stops10h 05m

$413
Quickest round-trip

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Fri 7/10

7:00 am-4:36 pm

1 stop6h 36m

Greenville

Fri 7/17

8:01 pm-11:59 pm

1 stop6h 58m

$464

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Mon 8/3

10:00 pm-9:18 am

1 stop8h 18m

Greenville

Sun 8/9

5:46 am-10:42 am

1 stop7h 56m

$467

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Wed 7/8

5:34 am-4:36 pm

1 stop8h 02m

Greenville

Wed 7/15

5:28 pm-10:32 pm

1 stop8h 04m

$477

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Tue 6/30

10:22 am-10:56 pm

1 stop9h 34m

Greenville

Wed 7/29

7:01 am-1:22 pm

1 stop9h 21m

$502

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Tue 6/30

11:59 pm-2:07 pm

2 stops11h 08m

Greenville

Wed 7/29

4:07 pm-10:34 pm

1 stop9h 27m

$507

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Tue 7/14

5:00 am-3:19 pm

1 stop7h 19m

Greenville

Tue 9/22

4:33 pm-8:53 pm

1 stop7h 20m

$513

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Wed 7/8

5:45 am-7:00 pm

2 stops10h 15m

Greenville

Wed 7/15

12:50 pm-7:00 pm

2 stops9h 10m

$517

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Greenville from

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

What is the typical price of a round-trip flight between Ontario and Greenville?

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 $358. 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 $254. Flights to Greenville are more costly at noon, with an average ticket price of $306. Departure times at noon 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 44m

Direct flights

None
The fastest flight from Ontario to Greenville takes 6h 44m
There are no direct flights from Ontario to Greenville. There are no popular flight routes from Ontario to Greenville.
Search flight deals

Frequently asked questions about flying from Ontario to Greenville

  • 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 44m.

  • 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?

  • 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?

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
DeltaPriceFrom $228Free CancellationRating
7.9
8,396 reviews
Search Delta flights
United AirlinesPriceFrom $273Free CancellationRating
7.4
9,780 reviews
Search United Airlines flights
American AirlinesPriceFrom $274Free CancellationRating
7.1
11,642 reviews
Search American Airlines flights
SouthwestPriceFrom $319Free CancellationRating
7.9
4,251 reviews
Search Southwest flights

Traveling to a place near Greenville?

Book flights to Greenville if you plan to visit one of these locations
Anderson
Simpsonville
Greenwood
Greer
Seneca
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.

An easier way to manage your Greenville trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 7/8
Wed 7/15
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States