$211 Find Cheap Flights from Greenville to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Greenville to Ontario departing on 9/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Greenville to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Greenville to Ontario, as well as popular online travel agencies
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Flight Deals

Book Cheap Greenville to Ontario Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Greenville to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Greenville to Ontario

Wed, Jun 17 - Mon, Jun 22
Multiple Airlines Logo
3:48 pm - 2:05 pm
GSP
-
YYZ
22h 17m
1 stop
Multiple Airlines Logo
1:30 pm - 8:53 pm
YYZ
-
GSP
7h 23m
1 stop
$352Multiple Airlines
Thu, Oct 15 - Sun, Oct 18
Multiple Airlines Logo
9:35 am - 8:55 pm
GSP
-
YYZ
11h 20m
1 stop
Multiple Airlines Logo
9:30 am - 2:30 pm
YYZ
-
GSP
29h 00m
1 stop
$408Multiple Airlines
Sat, Oct 31 - Tue, Nov 3
American Airlines Logo
7:37 am - 4:29 pm
GSP
-
YYZ
8h 52m
1 stop
American Airlines Logo
10:59 am - 10:33 pm
YYZ
-
GSP
11h 34m
1 stop
$494American Airlines
Fri, Jun 12 - Mon, Jun 15
United Airlines Logo
11:18 am - 4:38 pm
GSP
-
YOW
5h 20m
1 stop
United Airlines Logo
6:05 am - 10:37 am
YOW
-
GSP
4h 32m
1 stop
$542United Airlines
Fri, Jul 17 - Fri, Jul 24
Delta Logo
6:00 am - 6:54 pm
GSP
-
YUL
12h 54m
1 stop
Delta Logo
2:29 pm - 10:35 pm
YUL
-
GSP
8h 06m
1 stop
$553Delta
Sun, Jul 19 - Thu, Jul 30
Delta Logo
5:44 am - 6:54 pm
GSP
-
YUL
13h 10m
2 stops
Delta Logo
9:30 am - 5:30 pm
YUL
-
GSP
8h 00m
1 stop
$563Delta
Sat, Aug 15 - Tue, Aug 18
United Airlines Logo
6:30 am - 1:59 pm
GSP
-
YOW
7h 29m
1 stop
United Airlines Logo
5:57 pm - 11:05 pm
YOW
-
GSP
5h 08m
1 stop
$583United Airlines
Fri, Oct 30 - Tue, Nov 3
American Airlines Logo
5:52 pm - 9:50 am
GSP
-
YUL
15h 58m
1 stop
American Airlines Logo
12:59 pm - 10:33 pm
YUL
-
GSP
9h 34m
2 stops
$587American Airlines
Fri, Jun 12 - Mon, Jun 15
Air Canada Logo
11:18 am - 4:38 pm
GSP
-
YOW
5h 20m
1 stop
Air Canada Logo
9:45 pm - 2:20 pm
YOW
-
GSP
16h 35m
2 stops
$604Air Canada
Fri, Jun 12 - Mon, Jun 15
Air Canada Logo
6:20 am - 12:46 am
GSP
-
YOW
18h 26m
2 stops
Air Canada Logo
10:10 pm - 2:20 pm
YOW
-
GSP
16h 10m
2 stops
$642Air Canada
Booking Insights

KAYAK's insights & trends for Greenville to Ontario flights

Get data-powered insights and trends into flights from Greenville to Ontario to help you find the cheapest flights, the best time to fly and much more.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Greenville to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Greenville to Ontario is May, when tickets cost $0 (return) on average. On the other hand, the most expensive months are September and March, when the average cost of round-trip tickets is $947 and $737 respectively.

Good to know

Cheapest flight$211
Flight from Greenville to Toronto

FAQs - booking Ontario flights

  • How does KAYAK find such low prices on flights from Greenville to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Greenville to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Greenville to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Greenville to Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Greenville to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Greenville to Ontario with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Greenville to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Greenville to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Greenville to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Greenville to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Greenville to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8447 reviews
7.2Food
7.8Comfort
7.8Entertainment
8.5Crew
8.1Boarding
Airline reviews

I continue to be satisfied with Delta’s excellent service out of LGA. The digit id works well and gets me through security in no time. Whenever possible, I choose Delta.

10.0 Excellentangela, May 2026
LGA - PBI
Read more Delta reviews

I continue to be satisfied with Delta’s excellent service out of LGA. The digit id works well and gets me through security in no time. Whenever possible, I choose Delta.

Was revoked with Jet Blue due to delay from Kenya Air

The Boarding process was great. Particularly since my wife and I require assistance. The flight attendants were amazing. We travel frequently; they honestly were a cut above. 😀

Enjoyed it very much. Especially liked the free WiFi that Delta offers.

Smooth flight. Left on time, and got in 15 minutes early. Onboard video was great

For some reason, TSA Atlanta didn’t have my bag on the flight on time and they don’t have to provide Delta a reason for that.

WiFi didn’t work on two of four planes. Flight attendants were not overly friendly or welcoming. Planes were extremely slow to board and deplane.

Delta does a great job with entertainment and free wifi. I can still be in touch with my colleagues while in the air.

Aside from a completely packed plane, I really have no complaints.

Bus to plane was delayed for no apparent reason and our luggage was still on the belt when they shut it off. Took about 20 minutes to turn it back on to get our luggage.

Some crew were unfriendly or in some cases just straight up rude.

Putting people that close to the bathroom, where you have to look into the bathroom as people are exiting and entering was not great and the smell was also not great. I know the airlines are desperate for more chairs, but that seat is a crime.

one staffer was frustrated (it happen); the flight was late and the pilot mentioned they'll make amend but the snacks were the same, other than that the aircraft was clean and everything went smooth, no complaints

ticket agent lady wás very helpful , she arranged wheel chair for my elderly mother

Entertainment kept turning itself off. Gave up on watching a movie.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

United Airlines is my preferred airlines and I am thankful for Gary who also help support me on the phone to switch my flight literally last min.

Not United Airlines' fault. It's ORL airport's fault.

The flight was on time. I generally don’t drink or eat on short flights and the seats were good and the flight attendants were friendly. That’s all I expect

United overall experience is great these days. Airport experience was very organized. Staff on flight were great. App and information as good as it gets.

The wifi experience is awful. I had to try again and again, taking over 30 minutes, to connect to the wifi. I had to watch the same two ads over and over until I was finally successful. Once connected, it was anything but "high speed" and disconnected at least three times during the flight.

Fine. Nothing to write home about. The plane left on time, and arrived on time.

I was downgraded from first class to coach due to an airplane change. They pulled me out of line and I was the very last person to board the plane stuck in the middle seat with no overhead place to put my carry-.on. Very poor customer service.

Seat comfort was poor (no lumbar or lower back support).

The airplane seats were spacious and comfortable, and the flight attendants were friendly and attentive. The food was delicious like never before. The blankets and toiletries were thoughtfully provided. The captain's navigation was steady and reliable. In short, having flown with Starlux, I won't consider any other airline next time.

STOP MAKING THE SEATING SO CRAMPED. WE NEED A PASSENGER BILL OF RIGHTS!

The passenger in front of of me reclined their seat back all the way the entire flight. Their headrest was in my face the entire flight! I barely had room for the little plastic cup of water to fit on my tray table; can you make the seats and space between the rows any smaller??? You can’t even get up to use the restroom! Worst flight I’ve had in a very long time!

We had several flights and they were all on-time and flawless

My Frequent Flyer nber wasn't put on as I was told it was..... This resulted in a last group boarding and no priority tags on My bags.

Premium Economy Good crew, good service, excellent food. Seat back screen just not bright enough.

Everything you need to know for your flight from Greenville to Ontario

Information on your arrival and departure airports