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Cheap flights from Ontario to Greenville from $209

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 5/19. 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
0 bags

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Find the cheapest flights from Ontario to Greenville

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
10:00 pm - 9:04 am
ONT
-
GSP
8h 04m
1 stop
Delta Logo
5:40 am - 10:57 am
GSP
-
ONT
8h 17m
1 stop
$299Delta
Wed, May 27 - Tue, Jun 2
Delta Logo
10:00 pm - 9:04 am
ONT
-
GSP
8h 04m
1 stop
Delta Logo
7:10 am - 6:25 pm
GSP
-
ONT
14h 15m
2 stops
$304Delta
Wed, Jun 3 - Tue, Jun 9
Delta Logo
5:50 pm - 10:55 am
ONT
-
GSP
14h 05m
2 stops
Delta Logo
7:10 am - 6:25 pm
GSP
-
ONT
14h 15m
2 stops
$309Delta
Wed, Jun 3 - Tue, Jun 9
Delta Logo
10:00 pm - 9:04 am
ONT
-
GSP
8h 04m
1 stop
Delta Logo
5:40 am - 10:57 am
GSP
-
ONT
8h 17m
1 stop
$331Delta
Thu, May 28 - Tue, Jun 2
Delta Logo
12:00 pm - 11:38 pm
ONT
-
GSP
8h 38m
1 stop
Delta Logo
2:25 pm - 6:01 pm
GSP
-
ONT
6h 36m
1 stop
$337Delta
Sat, Sep 12 - Tue, Sep 22
Delta Logo
12:00 pm - 11:38 pm
ONT
-
GSP
8h 38m
1 stop
Delta Logo
3:42 pm - 11:44 pm
GSP
-
ONT
11h 02m
2 stops
$342Delta
Sat, Sep 12 - Tue, Sep 22
Delta Logo
7:00 am - 10:00 pm
ONT
-
GSP
12h 00m
2 stops
Delta Logo
3:42 pm - 11:44 pm
GSP
-
ONT
11h 02m
2 stops
$347Delta
Sat, Sep 12 - Tue, Sep 22
American Airlines Logo
5:44 am - 4:35 pm
ONT
-
GSP
7h 51m
1 stop
American Airlines Logo
5:24 pm - 11:59 pm
GSP
-
ONT
9h 35m
1 stop
$370American Airlines
Wed, Jun 3 - Tue, Jun 9
Delta Logo
10:00 pm - 9:04 am
ONT
-
GSP
8h 04m
1 stop
Delta Logo
5:44 am - 10:40 am
GSP
-
ONT
7h 56m
1 stop
$379Delta
Wed, Jun 3 - Tue, Jun 9
Delta Logo
10:00 pm - 9:04 am
ONT
-
GSP
8h 04m
1 stop
Delta Logo
5:44 am - 10:40 am
GSP
-
ONT
7h 56m
1 stop
$383Delta
Thu, Jun 4 - Tue, Jun 9

Delta flights from Ontario to Greenville

Our best Delta deals on Ontario to Greenville flight tickets
Delta
May 27
ONT10:00 pmOntario
8h 04m
1 stop
GSP9:04 amGreenville
Jun 2
GSP5:40 amGreenville
8h 17m
1 stop
ONT10:57 amOntario
$299
Delta
Jun 3
ONT10:00 pmOntario
8h 04m
1 stop
GSP9:04 amGreenville
Jun 9
GSP7:10 amGreenville
14h 15m
2 stops
ONT6:25 pmOntario
$304
Delta
Jun 3
ONT5:50 pmOntario
14h 05m
2 stops
GSP10:55 amGreenville
Jun 9
GSP7:10 amGreenville
14h 15m
2 stops
ONT6:25 pmOntario
$309

United Airlines flights from Ontario to Greenville

Our best United Airlines deals on Ontario to Greenville flight tickets
United Airlines
Aug 11
ONT5:45 amOntario
12h 32m
2 stops
GSP9:17 pmGreenville
Aug 12
GSP4:15 pmGreenville
7h 37m
1 stop
ONT8:52 pmOntario
$414
United Airlines
Aug 11
ONT5:45 amOntario
8h 00m
1 stop
GSP4:45 pmGreenville
Aug 12
GSP4:15 pmGreenville
7h 37m
1 stop
ONT8:52 pmOntario
$441
United Airlines
Aug 11
ONT5:45 amOntario
12h 32m
2 stops
GSP9:17 pmGreenville
Aug 19
GSP5:26 pmGreenville
7h 33m
1 stop
ONT9:59 pmOntario
$472

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 April 23, 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 5/27

10:00 pm-9:04 am

1 stop8h 04m

Greenville

Tue 6/2

5:40 am-10:57 am

1 stop8h 17m

$299

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Wed 6/3

10:00 pm-9:04 am

1 stop8h 04m

Greenville

Tue 6/9

7:10 am-6:25 pm

2 stops14h 15m

$304

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Wed 6/3

5:50 pm-10:55 am

2 stops14h 05m

Greenville

Tue 6/9

7:10 am-6:25 pm

2 stops14h 15m

$309

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Thu 5/28

10:00 pm-9:04 am

1 stop8h 04m

Greenville

Tue 6/2

5:40 am-10:57 am

1 stop8h 17m

$331
Quickest round-trip

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Sat 9/12

12:00 pm-11:38 pm

1 stop8h 38m

Greenville

Tue 9/22

2:25 pm-6:01 pm

1 stop6h 36m

$337

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Sat 9/12

12:00 pm-11:38 pm

1 stop8h 38m

Greenville

Tue 9/22

3:42 pm-11:44 pm

2 stops11h 02m

$342

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Sat 9/12

7:00 am-10:00 pm

2 stops12h 00m

Greenville

Tue 9/22

3:42 pm-11:44 pm

2 stops11h 02m

$347

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Wed 6/3

5:44 am-4:35 pm

1 stop7h 51m

Greenville

Tue 6/9

5:24 pm-11:59 pm

1 stop9h 35m

$370

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Wed 6/3

10:00 pm-9:04 am

1 stop8h 04m

Greenville

Tue 6/9

5:44 am-10:40 am

1 stop7h 56m

$379

OntarioGreenville

ONT - GSP

ONTGSP

Ontario

Thu 6/4

10:00 pm-9:04 am

1 stop8h 04m

Greenville

Tue 6/9

5:44 am-10:40 am

1 stop7h 56m

$383

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 $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 $236. Flights to Greenville are more costly at noon, with an average ticket price of $307. 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 49m

Direct flights

None
The fastest flight from Ontario to Greenville takes 6h 49m
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 49m.

  • 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
8,438 reviews
Search Delta flights
United AirlinesPriceFrom $273Free CancellationRating
7.4
9,637 reviews
Search United Airlines flights
American AirlinesPriceFrom $274Free CancellationRating
7.1
11,659 reviews
Search American Airlines 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.

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