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$267+ Cheap flights from Greenville (GSP) to Ontario

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/19. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — YYZ
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
1 adult, Economy
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Cheap flight deals from Greenville to Ontario

Cheapest flights from Greenville to Ontario
Explore the most affordable flight options available from Greenville to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 26, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/24:39 pm
GSP
-
YYZ
1 stop21h 37m
Multiple Airlines
Wed 2/43:40 pm
YYZ
-
GSP
1 stop25h 15m
Multiple Airlines
Deal found 1/24$369
This American Airlines deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/77:41 am
GSP
-
YYZ
1 stop10h 03m
American Airlines
Sat 4/1111:44 am
YYZ
-
GSP
1 stop12h 14m
American Airlines
Deal found 1/24$428
This United Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/511:49 am
GSP
-
YOW
1 stop4h 41m
United Airlines
Sun 2/85:55 pm
YOW
-
GSP
1 stop5h 53m
United Airlines
Deal found 1/25$456
This American Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/106:31 am
GSP
-
YYZ
1 stop10h 14m
American Airlines
Sat 5/1611:10 am
YYZ
-
GSP
1 stop7h 33m
American Airlines
Deal found 1/25$463
This Kiwi.com deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/295:45 pm
GSP
-
YYZ
1 stop21h 08m
Multiple Airlines
Sat 1/313:40 pm
YYZ
-
GSP
1 stop25h 15m
Multiple Airlines
Deal found 1/25$513
This American Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/96:23 pm
GSP
-
YYZ
1 stop4h 36m
American Airlines
Thu 2/191:10 pm
YYZ
-
GSP
1 stop10h 32m
American Airlines
Deal found 1/25$529
This United Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/206:30 am
GSP
-
YUL
1 stop27h 50m
United Airlines
Mon 2/234:45 pm
YUL
-
GSP
1 stop27h 56m
United Airlines
Deal found 1/25$530
This Kiwi.com deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/203:31 pm
GSP
-
YYZ
1 stop7h 49m
Multiple Airlines
Sun 3/223:40 pm
YYZ
-
GSP
1 stop23h 58m
Multiple Airlines
Deal found 1/24$535
This Delta deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/16:05 am
GSP
-
YUL
1 stop7h 32m
Delta
Tue 4/79:20 am
YUL
-
GSP
1 stop8h 21m
Delta
Deal found 1/25$557
This Kiwi.com deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/247:30 am
GSP
-
YUL
1 stop4h 29m
Multiple Airlines
Sun 3/298:00 am
YUL
-
GSP
1 stop12h 56m
Multiple Airlines
Deal found 1/25$561
This Delta deal was found by Cheapflights users on 1/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/246:05 am
GSP
-
YUL
1 stop7h 32m
Delta
Sun 3/296:45 pm
YUL
-
GSP
1 stop5h 09m
Delta
Deal found 1/23$572
This United Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/76:00 am
GSP
-
YYZ
2 stops12h 28m
United Airlines
Sun 6/149:00 pm
YYZ
-
GSP
1 stop19h 55m
United Airlines
Deal found 1/25$583

Find flight deals from Greenville to Ontario

Keep the following information in mind while searching for Greenville to Ontario flight deals. Data was last updated January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$428
(American Airlines)

One-way from

$267
(United Airlines)

Popular in

October

Cheapest in

February

Average price

$537
Provider with most accurate pricing for Greenville-Toronto (YTO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Greenville-Toronto (YTO) flights.
Search Deals
From Greenville to Ontario
Search Deals
One-way flight from Greenville to Ontario
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($112 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Greenville to Ontario 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, Cheapflights users made 2,558,603 searches. Data last updated January 26, 2026.
Use the filters below to find and compare flights from Greenville to Ontario that are best for you.

Fly from

Greenville

Fly to

Ontario

Route

Depart

Return

Price

GreenvilleToronto

GSP - YYZ

GSPYYZ

Greenville

Tue 4/7

7:41 am-5:44 pm

1 stop10h 03m

Toronto Pearson Intl

Sat 4/11

11:44 am-11:58 pm

1 stop12h 14m

$428

GreenvilleOttawa

GSP - YOW

GSPYOW

Greenville

Thu 2/5

6:20 am-1:32 pm

1 stop7h 12m

Ottawa

Sun 2/8

5:55 pm-11:48 pm

1 stop5h 53m

$456

GreenvilleToronto

GSP - YYZ

GSPYYZ

Greenville

Sun 5/10

6:31 am-4:45 pm

1 stop10h 14m

Toronto Pearson Intl

Sat 5/16

11:10 am-6:43 pm

1 stop7h 33m

$463

GreenvilleToronto

GSP - YYZ

GSPYYZ

Greenville

Fri 3/20

3:31 pm-11:35 am

2 stops20h 04m

Toronto Pearson Intl

Sun 3/22

10:05 am-8:56 pm

1 stop10h 51m

$513

GreenvilleToronto

GSP - YYZ

GSPYYZ

Greenville

Sat 3/14

5:00 am-3:45 pm

1 stop10h 45m

Toronto Pearson Intl

Wed 3/18

11:40 am-7:46 pm

1 stop8h 06m

$529

GreenvilleToronto

GSP - YYZ

GSPYYZ

Greenville

Mon 2/9

6:23 pm-10:59 pm

1 stop4h 36m

Toronto Pearson Intl

Thu 2/19

1:10 pm-11:42 pm

1 stop10h 32m

$529

GreenvilleMontreal

GSP - YUL

GSPYUL

Greenville

Fri 2/20

6:30 am-10:20 am

1 stop27h 50m

Montreal Pierre Elliott Trudeau Intl

Mon 2/23

3:30 pm-10:01 am

2 stops18h 31m

$540

GreenvilleMontreal

GSP - YUL

GSPYUL

Greenville

Wed 4/1

6:05 am-1:37 pm

1 stop7h 32m

Montreal Pierre Elliott Trudeau Intl

Tue 4/7

9:20 am-5:41 pm

1 stop8h 21m

$557

GreenvilleMontreal

GSP - YUL

GSPYUL

Greenville

Tue 3/24

7:30 am-11:59 am

1 stop4h 29m

Montreal Pierre Elliott Trudeau Intl

Sun 3/29

8:00 am-8:56 pm

1 stop12h 56m

$561

GreenvilleMontreal

GSP - YUL

GSPYUL

Greenville

Tue 3/24

6:05 am-1:37 pm

1 stop7h 32m

Montreal Pierre Elliott Trudeau Intl

Sun 3/29

6:45 pm-11:54 pm

1 stop5h 09m

$572

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Showing 1-10 of 23 results
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Best time to book a flight from Greenville to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Greenville with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Greenville to Region of Ontario?

Currently, May is the cheapest month in which you can book a flight from Greenville to Region of Ontario (average of $111). Flying from Greenville to Region of Ontario in July is currently the most expensive (average of $481). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Greenville to Region of Ontario?

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated January 26, 2026.
Read through reviews of airlines operating flights from Greenville to Ontario, such as Delta, United Airlines, and American Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,111 reviews

Entertainment

7.8

Overall

7.9

Crew

8.5

Comfort

7.9

Food

7.2

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,111 reviews
Delta
7.9
Good
8,111 reviews

Entertainment

7.8

Overall

7.9

Crew

8.5

Comfort

7.9

Food

7.2

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,199 reviews
Delta
7.9
Good
8,111 reviews

Entertainment

7.8

Overall

7.9

Crew

8.5

Comfort

7.9

Food

7.2

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,189 reviews
Delta
7.9
Good
8,111 reviews

Entertainment

7.8

Overall

7.9

Crew

8.5

Comfort

7.9

Food

7.2

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Greenville to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Greenville to Ontario?

    Greenville (GSP) is the airport you will fly out of if you book a flight from Greenville to Ontario. It is only a 10.4 mi journey to Greenville (GSP) from Greenville’s city center.

  • How long is the flight from Greenville to Region of Ontario?

    Airlines like American Airlines, United Airlines, and Delta fly from Greenville to Region of Ontario in about 7h 12m. The time it takes to get you to your destination can typically vary by up to 2h 51m. Greenville and Region of Ontario are separated by a distance of 798 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Greenville to Region of Ontario?

    While some choose either Greenville - Toronto Pearson Intl or Greenville - Ottawa, Greenville - Montreal Pierre Elliott Trudeau Intl is the most popular route from Greenville to Region of Ontario.

  • Can I find deals for flights from Greenville to Ontario that include hotel bookings?

    Yes. In addition to deals on Greenville to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Greenville to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Greenville to Ontario.

  • Can I find deals for business class flights from Greenville to Ontario?

    Yes. Cheapflights offers flight deals from Greenville to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Greenville to Region of Ontario?

    Currently, May is the cheapest month in which you can book a flight from Greenville to Region of Ontario (average of $111). Flying from Greenville to Region of Ontario in July is currently the most expensive (average of $481). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Greenville to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Greenville to Ontario

Discover the top 2 airlines that operate flights from Greenville to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$335Average$474FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$348Average$609FlexibilityNo cancel feeOn-time69%

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