Lowest Prices
Uncover the best deals on Greenville to Ontario flights by comparing fares from hundreds of airlines and agencies.
Good to Know: Cheapest and Fastest GSP - ONT Flights
Useful information for finding best airline tickets from Greenville Spartanburg International to Ontario International on your next trip.
Cheapest Round Trip Flight
$304
Southwest Airlines
• 1 stop
• 11h 50m
Nov 14 – Nov 15
The cheapest round trip flight from Greenville to Ontario (GSP-ONT-GSP) is currently $304
Cheapest One way Flight
$819
Delta Airlines
• 1 stop
• 11h 46m
Oct 09
The cheapest one way flight from Greenville to Ontario (GSP-ONT) is currently $819
Fastest Flight
10h 46m
The fastest nonstop flight from Greenville to Ontario (GSP-ONT) takes 10h 46m
Top Airlines Flying from Greenville to Ontario
Latest Flight Deals from Greenville (GSP) to Ontario (ONT)
Compare and book low fare round-trip air tickets from Greenville to Ontario. Ideal for travelers with confirmed return itineraries.
Nov 14 - Nov 15, Economy
Greenville → Ontario
11h 50m
10:50 AM - 3:00 PM • 1 stop
Greenville → Ontario
22h 15m
5:10 AM - 9:45 PM • 1 stop
Southwest Airlines
Nov 14 - Nov 15, Economy
Greenville → Ontario
17h 35m
7:05 AM - 3:00 PM • 1 stop
Greenville → Ontario
10h 30m
1:30 PM - 11:00 PM • 1 stop
Southwest Airlines
Oct 27 - Oct 30, Economy
Greenville → Ontario
17h 10m
7:00 AM - 2:30 PM • 1 stop
Greenville → Ontario
19h 15m
5:05 AM - 8:00 PM • 1 stop
Southwest Airlines
Oct 27 - Oct 30, Economy
Greenville → Ontario
10h 46m
5:25 PM - 9:11 PM • 1 stop
Greenville → Ontario
12h 15m
6:00 AM - 4:35 PM • 1 stop
American Airlines
Oct 27 - Oct 30, Economy
Greenville → Ontario
12h 2m
4:29 PM - 8:51 PM • 1 stop
Greenville → Ontario
18h 30m
9:00 PM - 11:10 AM • 1 stop
United Airlines
Explore competitive one-way airfare options for GSP - ONT flights. Best suited for flexible or open-ended travel plans.
Flying to Ontario soon? We've surfaced some of the most affordable last-minute flights from Greenville to Ontario, ideal for urgent plans or spontaneous trips.
FAQs on Greenville to Ontario Flights
What are the airports in Greenville?
GSP
What’s the most popular airline flying from GSP to ONT?
The most popular airline flying from Greenville to Ontario are
Can I fly from GSP to ONT non-stop?
NO
Which airlines fly nonstop between Greenville and Ontario?
The non-stop flights between Greenville and Ontario are .
What’s the earliest departure time from GSP to ONT Airport?
The earliest flight leaves GSP at 5:40 am and lands in ONT - Ontario International
What are the airports in Ontario?
ONT
Can I make changes to my Greenville to Ontario flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from GSP to ONT?
Read the fare rules of the Greenville to Ontario air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Greenville and Ontario?
operate flights between Greenville and Ontario
How long does a flight from Greenville to Ontario take?
It takes approximately 5 hour to fly non-stop from GSP to ONT, which is 2009.97 miles by air.
Which airlines provide the cheapest flights from Greenville (GSP) to Ontario (ONT) ?
In the past couple of days, the cheapest tickets to ONT from GSP were found on DL : USD 819
Do I need a passport to fly between GSP and ONT?
No
What’s the latest departure time from GSP to ONT ?
The last flight leaves GSP at 5:25 pm
Greenville (GSP) to Ontario (ONT): Airport Information
| Origin Airport | Greenville Spartanburg International , Greenville, US |
| Destination Airport | Ontario International , Ontario, US |
| Distance | 2010 miles |
More Flight Options for Greenville (GSP) and Ontario (ONT)
Flights from Greenville (GSP)
to Denver (DEN)
Flights from Greenville (GSP)
to Denver (DEN)
Flights from Greenville (GSP)
to Las Vegas (LAS)
Flights from Greenville (GSP)
to Miami (MIA)
Flights from Greenville (GSP)
to Miami (MIA)
Flights from Greenville (GSP)
to Detroit (DTW)
Flights from Greenville (GSP)
to Baltimore (BWI)
Flights from Greenville (GSP)
to Tampa (TPA)
Flights from Greenville (GSP)
to Orlando (MCO)
Flights from Greenville (GSP)
to New York (JFK)
Flights from Greenville (GSP)
to Seattle (SEA)
Flights from Greenville (GSP)
to Fort Lauderdale (FLL)
Flights from Denver (DEN)
to Ontario (ONT)
Flights from Denver (DEN)
to Ontario (ONT)
Flights from Seattle (SEA)
to Ontario (ONT)
Flights from Seattle (SEA)
to Ontario (ONT)
Flights from San Francisco (SFO)
to Ontario (ONT)
Flights from San Francisco (SFO)
to Ontario (ONT)
Flights from Miami (MIA)
to Ontario (ONT)
Flights from Miami (MIA)
to Ontario (ONT)
Flights from Dallas (DFW)
to Ontario (ONT)
Flights from Dallas (DFW)
to Ontario (ONT)
Flights from Las Vegas (LAS)
to Ontario (ONT)
Flights from Las Vegas (LAS)
to Ontario (ONT)
Flights from Indianapolis (IND)
to Ontario (ONT)
Flights from Indianapolis (IND)
to Ontario (ONT)
Flights from New York (LGA)
to Ontario (ONT)
Flights from New York (LGA)
to Ontario (ONT)
Flights from Newark (EWR)
to Ontario (ONT)
Flights from New York (JFK)
to Ontario (ONT)
Flights from Dallas (DAL)
to Ontario (ONT)
Flights from Dallas (DAL)
to Ontario (ONT)
Cheap flights to North America (NA)
Cheap flights to United States (US)
Cheap flights to South Carolina (US-SC)
Cheap flights to California (US-CA)
Cheap flights from North America (NA)
Cheap flights from United States (US)
Cheap flights from California (US-CA)
Cheap flights from South Carolina (US-SC)
Flights to Greenville (GSP)
Flights to Greenville (GSP)
Flights to Ontario (ONT)
Flights to Ontario (ONT)
Flights from Greenville (GSP)
Flights from Ontario (ONT)
Flights from Ontario (ONT)
to Greenville (GSP)
Why Fareleaders for GSP to ONT Plane Tickets
New Deals Everyday
Get the best prices on GSP to ONT flights—we update our fares daily so you never miss a saving.
No Service Fees
Compare hundreds of Greenville to Ontario flights and secure the best deals—we never add any service fees.