$150 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 4/23. 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

tis, jun 16 - ons, jun 17
United Airlines Logo
7:40 pm - 11:54 pm
GSP
-
YOW
4h 14m
1 stop
United Airlines Logo
6:05 am - 10:37 am
YOW
-
GSP
4h 32m
1 stop
$331United Airlines
tis, jun 16 - ons, jun 17
United Airlines Logo
7:40 pm - 11:54 pm
GSP
-
YOW
4h 14m
1 stop
United Airlines Logo
6:05 am - 10:37 am
YOW
-
GSP
4h 32m
1 stop
$332United Airlines
fre, jun 12 - sön, jun 14
Multiple Airlines Logo
8:29 am - 11:35 pm
GSP
-
YYZ
15h 06m
1 stop
Multiple Airlines Logo
4:50 pm - 7:39 am
YYZ
-
GSP
14h 49m
1 stop
$333Multiple Airlines
fre, apr 24 - mån, apr 27
Multiple Airlines Logo
5:43 pm - 4:55 pm
GSP
-
YUL
23h 12m
2 stops
Multiple Airlines Logo
8:00 am - 4:53 pm
YUL
-
GSP
8h 53m
1 stop
$367Multiple Airlines
tis, jun 16 - ons, jun 17
Air Canada Logo
7:49 pm - 9:11 am
GSP
-
YOW
13h 22m
1 stop
Air Canada Logo
11:15 am - 11:29 pm
YOW
-
GSP
12h 14m
2 stops
$393Air Canada
tis, jun 23 - fre, jun 26
Air Canada Logo
7:40 pm - 10:03 am
GSP
-
YOW
14h 23m
1 stop
Air Canada Logo
6:25 am - 9:17 pm
YOW
-
GSP
14h 52m
1 stop
$417Air Canada
tis, jun 16 - lör, jun 20
American Airlines Logo
7:00 am - 4:48 pm
GSP
-
YYZ
9h 48m
1 stop
American Airlines Logo
7:22 am - 3:43 pm
YYZ
-
GSP
8h 21m
1 stop
$439American Airlines
tors, jun 25 - lör, jul 4
Delta Logo
6:13 pm - 8:39 am
GSP
-
YUL
14h 26m
1 stop
Delta Logo
7:00 am - 2:51 pm
YUL
-
GSP
7h 51m
1 stop
$512Delta
tors, jun 25 - lör, jul 4
Delta Logo
6:13 pm - 8:39 am
GSP
-
YUL
14h 26m
1 stop
Delta Logo
7:00 am - 12:18 pm
YUL
-
GSP
5h 18m
1 stop
$513Delta
tors, sep 10 - tis, sep 15
American Airlines Logo
5:48 pm - 9:45 am
GSP
-
YUL
15h 57m
1 stop
American Airlines Logo
10:35 am - 10:36 pm
YUL
-
GSP
12h 01m
1 stop
$524American Airlines
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.

How much is a round-trip flight from Greenville to Region of Ontario?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Greenville to Region of Ontario departing in June.

Good to know

Cheapest flight$150
Most popular time to fly with an average 19% increase in price.
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 8370 reviews
8.1Boarding
7.9Comfort
7.2Food
8.5Crew
7.8Entertainment
Airline reviews

Everything could have benn better. Short fly, no food, no entertainment and no wifi.

8.0 ExcellentEarl, Apr 2026
ORD - DTW
Read more Delta reviews

Everything could have benn better. Short fly, no food, no entertainment and no wifi.

Flight delayed. Air broken. Cabin was hot enough to pass out. Delta shuttle’s becoming worse and worse.

my mom urmila patel needed a wheelchair which was not available on the curbside. she needed to walk almost 50 meters inside (at the risk of falling) and then had to wait in line to get a wheelchair (this is not ok). Once obtained she had to seat in it for 30-45 minutes for someone to take her in thru the checkin process (which was fairly smooth and easy). the lady who helped her with her checkin process was very courteous and helpful

On the return flight, flight attendant Britt went out of her way to inform passengers that several of us had tight connections.

Fast, lovely scenery, great info on the Delta flight screen about landmarks we were flying over. Great landing!

Staff at the check-in counter were friendly, happy and helpful. They tagged our bags and sent us to “bag drop off” but were not very clear about where that was. The airport was busy we headed off in what we thought was the right direction until a gentleman waved us down and actually came after us. He was the baggage handler for Delta and recognized our “deer in the headlights “ look-he brought us to the right area (which was marked as the Southwest Airlines Drop Off) and sent us on our way. Wonderful guy, low key and working with a big smile on his face. Loved it. Loved him.

During the flight, the only refreshments provided were crackers and soft drinks; no substantial food was offered despite the international route. Furthermore, our initial flight was delayed, causing us to miss the connecting flight in Atlanta. The airline did not hold the connection, and we were informed that the next available flight is not for another 24 hours. While I am aware of alternative options via JetBlue, they operate out of JFK, which is not a viable solution for us as a resident of New Jersey.

Arlene was a great flight attendant. I also liked how one of the other flight attendants gave us a heads up about snacks and asked everyone to remove their headphones when it was their turn to order. Good idea.

Long flight but comfortable and not freezing as I have experienced on Hawaiian flights to the islands. They gave us blankets just in case. Nice touch.

I haven’t flown economy in over 20 years but it was not bad. Room by my feet for my bag and seat was roomy enough. Surprised in a good way.

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.

Very nice flight love the small aircraft. We had a wonderful flight attendant. Nice to see someone that really enjoys her job. Don't have her name but had a southern accent.

Seats in waiting area and on plane hard as rock. Fast internet on the flight was great! Crew was kind.

Not the fault of United—weather, reroute around weather, time sitting on tarmac, arrived couple hours late, too late for train into city necessitating a much pricier cab but weather…can’t be helped.

Flight was delayed. No urgency by American Airlines team to assist those with connecting flights. It was basically you are on your own to run through the terminals to try and make your connection. Thanks, Mary

I have never been assaulted they way I was today in Charlotte - shame on American

One of our group members was struggling to walk. In Charlotte we asked for a wheelchair and she was accompanied by Desmond. I was impressed by his patience and attention. In Boston she received the same service. I didn’t get the name of the helper but she went above and beyond in assisting us. A great AA service

Better snacks but flight and crew were amazing on this flight

Found that the plane used for this short flight is smaller and therefore the seats are really squeezed tight.

It was the most un-special flight experience in my life.

Plane was super cold. No entertainment unless you were with mileage program Getting off the plane was super slow

Flight was on-time, boarding was flawless and the crew was friendly.

The staff are very, very professional. It's what flying should feel like.

Flight boarded from Gate 159B, the farthest gate in the LAX Bradley Terminal. While the flight operated on time, the first class cabin attendant made no recognition of my being an Advantage Executive Platinum member.

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

Information on your arrival and departure airports