Cheap flights from Greenville to Ontario (GSP - ONT)

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The best prices from Greenville to Ontario are usually found in February or August, booked 60 days in advance, depart on a Tuesday or Friday and return on a Friday

How to find the cheapest flight from
Greenville (GSP) to Ontario (ONT)

All the information you need to plan the best GSP to ONT flight in 2021: compare Greenville to Ontario flight prices with the expected peak season, weather and rainfall in Ontario.
GSP - ONT
Price
$228 - $1,427
ONT
Temperature
53.6 - 78.8 °F
ONT
Precipitation
0.1 - 3.4 inches

Popular in

July

High demand for flights, 69% potential price rise

Cheapest in

February

Best time to find cheap flights, 48% potential price drop

Round-trip from

$228

From Greenville to Ontario

One-way from

$138

One-way flight from Greenville to Ontario

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
When is the cheapest time to fly from Greenville to Ontario (GSP - ONT)?

It’s typically best to fly out from Greenville to Ontario at noon. Doing so could potentially save you 71% on the flight price compared to flying in the evening, which is usually more expensive.

What is the cheapest day to fly round-trip from Greenville to Ontario?

Leaving on a Monday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 64% on the overall cost on flights from Greenville to Ontario.

How far in advance should I book a flight from Greenville to Ontario?

Find a great deal and save up to 11% by booking at least 33 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Greenville to Ontario within the next two weeks, with the cheapest ticket starting at $371.

What is the cheapest month to fly from Greenville to Ontario?

The best pricing can be found in the month of August. Prices to Ontario from Greenville average $363. You can even find prices in August for less than $363, as users have found deals to Ontario from as low as $174. The month of December appears to be one of the more expensive times to travel to Ontario from Greenville. Flying in the targeted month can save you up to 45%.

Cheap flights from Greenville to Ontario in December, January 2022

The best prices found for GSP to ONT flights for December, January
13 Jan - 19 Jan
$347pp
GSP
Greenville
United Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
United Airlines
   
2 STOPS
GSP
Greenville
6 Jan - 11 Jan
$359pp
GSP
Greenville
United Airlines
   
2 STOPS
ONT
Ontario
ONT
Ontario
United Airlines
 
1 STOP
GSP
Greenville
13 Jan - 19 Jan
$373pp
GSP
Greenville
United Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
United Airlines
 
1 STOP
GSP
Greenville

Greenville to Ontario 2022 flight deals

Cheap flights to Ontario from Greenville found for this year
5 Dec - 12 Dec
$614pp
GSP
Greenville
United Airlines
   
2 STOPS
ONT
Ontario
ONT
Ontario
United Airlines
 
1 STOP
GSP
Greenville
10 Dec - 13 Dec
$618pp
GSP
Greenville
American Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
American Airlines
 
1 STOP
GSP
Greenville
5 Dec - 12 Dec
$644pp
GSP
Greenville
Delta
   
2 STOPS
ONT
Ontario
ONT
Ontario
Delta
 
1 STOP
GSP
Greenville

Last minute flights from Greenville to Ontario

Late deals on round-trip flights to Ontario from Greenville, departing today and this week
10 Dec - 13 Dec
$618pp
GSP
Greenville
American Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
American Airlines
 
1 STOP
GSP
Greenville
10 Dec - 13 Dec
$686pp
GSP
Greenville
United Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
United Airlines
   
2 STOPS
GSP
Greenville
10 Dec - 12 Dec
$1,281pp
GSP
Greenville
United Airlines
 
1 STOP
ONT
Ontario
ONT
Ontario
United Airlines
 
1 STOP
GSP
Greenville

One-way flights to Ontario from Greenville

The cheapest one-way flights from Greenville to Ontario
2:05 am - 6:55 am
Delta
1 Stop
7h 50m
GSP - ONT
Delta
$138
Delta
6:20 am - 6:13 pm
Multiple Airlines
1 Stop
14h 53m
GSP - ONT
Multiple Airlines
$384
Kiwi.com
2:06 am - 2:36 pm
American Airlines
2 Stops
15h 30m
GSP - ONT
American Airlines

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Greenville</span> to <span class="emphasized">Ontario</span> flights.

Flight FAQs

From Greenville to Ontario

Which airlines flying from Greenville to Ontario have flexible cancellations due to COVID-19?

Some of the carriers operating flights from Greenville to Ontario that may be offering flexible cancellation policies are American Airlines, Delta, and United Airlines. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Can I find flights from Greenville to Ontario for under $400 on Cheapflights?

Yes, there are multiple flights from Greenville to Ontario for under $400. The cheapest flight booked recently is on American Airlines for just $337, but on average you can expect to pay $402.

Are there last-minute flights available from Greenville to Ontario for under $700?

There are currently 3+ open flights from Greenville to Ontario within the next 7 days for less than $700.

What are the cheapest airlines flying from Greenville to Ontario round-trip?

Our cheapest airline available from Greenville to Ontario is American Airlines. Our recent data shows that you can find tickets from as low as $337 on this airline. Additional options worth looking into are United Airlines and Delta, starting at $347 and $443 round-trip. Users have found that American Airlines is 23% cheaper than the other options available to this destination.

What are the cheapest airlines to fly from Greenville to Ontario one-way?

The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $138. However, be on the lookout for offers from American Airlines and United Airlines, as they are both options that can get you from Greenville to Ontario for a low price.

What are the most popular airlines that fly from Greenville to Ontario?

When booking a flight from Greenville to Ontario, you may want to consider flying on American Airlines, Delta or Frontier as they are the most popular for this route.

What are the cheapest flights from Greenville to Ontario?

Looking for the cheapest flight from Greenville to Ontario? While on average our users pay $250, our data indicates the cheapest price to be $138. The most popular route (Greenville - Ontario), is priced around $337.

COVID Restrictions

View COVID Travel Restrictions for Ontario, CA

Do I need a COVID test to fly to Ontario from Greenville?

Information is based on travel restrictions for travel to Ontario within the United States

Most visitors from Greenville need to provide a negative COVID-19 test result and/or quarantine to enter Ontario.

COVID-19 testing requirements
Visitors from Greenville must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 24 hours before departing to Ontario.

Quarantine requirements
Visitors from Greenville are not required to quarantine after entering Ontario.

Do I need a test to fly back to Greenville from Ontario?

Returning to Greenville from Ontario

COVID-19 testing requirements
Visitors from Ontario must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 24 hours before departing to Greenville.

Quarantine requirements
Visitors from Ontario are not required to quarantine after entering Greenville.

Hide COVID Travel Restrictions for Ontario, CA

Alternative routes for Greenville to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for Ontario

Things to know before you go - useful duration and weather info for your trip from Greenville to Ontario.

Airports servicing Greenville

Airports servicing Ontario

Top 4 airlines flying from Greenville to Ontario

The chart below displays the airlines Cheapflights users traveling from Greenville to Ontario choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Frontier
$40 $169 No cancel fee 62%
United Airlines
$152 $295 No cancel fee 69%
American Airlines
$176 $474 No cancel fee 71%
Delta
$192 $427 No cancel fee N/A
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