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$129+ 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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — YYZ
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
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 December 18, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/15. 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 12/2511:33 amGSP - YUL
1 stop12h 57mMultiple Airlines
Sun 1/44:35 pmYUL - GSP
1 stop26h 48mMultiple Airlines
Deal found 12/15$528
This Kiwi.com deal was found by Cheapflights users on 12/15. 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.
Sun 12/212:54 pmGSP - YUL
1 stop9h 36mMultiple Airlines
Sun 1/44:35 pmYUL - GSP
1 stop26h 48mMultiple Airlines
Deal found 12/15$555
This Kiwi.com deal was found by Cheapflights users on 12/15. 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 12/228:03 pmGSP - YUL
1 stop28h 27mMultiple Airlines
Sun 1/44:35 pmYUL - GSP
1 stop26h 48mMultiple Airlines
Deal found 12/15$557
This Kiwi.com deal was found by Cheapflights users on 12/15. 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 12/2511:33 amGSP - YUL
1 stop12h 57mMultiple Airlines
Wed 12/313:55 pmYUL - GSP
1 stop16h 58mMultiple Airlines
Deal found 12/15$558
This Kiwi.com deal was found by Cheapflights users on 12/15. 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 12/2511:33 amGSP - YUL
1 stop12h 57mMultiple Airlines
Thu 1/15:25 pmYUL - GSP
2 stops25h 58mMultiple Airlines
Deal found 12/15$564
This Kiwi.com deal was found by Cheapflights users on 12/15. 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.
Wed 12/244:40 pmGSP - YUL
1 stop22h 30mMultiple Airlines
Sun 1/44:35 pmYUL - GSP
1 stop26h 48mMultiple Airlines
Deal found 12/15$579
This Kiwi.com deal was found by Cheapflights users on 12/15. 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.
Sun 12/212:54 pmGSP - YUL
1 stop9h 36mMultiple Airlines
Wed 12/313:55 pmYUL - GSP
1 stop16h 58mMultiple Airlines
Deal found 12/15$585
This Kiwi.com deal was found by Cheapflights users on 12/15. 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 12/228:03 pmGSP - YUL
1 stop28h 27mMultiple Airlines
Wed 12/313:55 pmYUL - GSP
1 stop16h 58mMultiple Airlines
Deal found 12/15$586
This Kiwi.com deal was found by Cheapflights users on 12/15. 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.
Sun 12/212:54 pmGSP - YUL
1 stop9h 36mMultiple Airlines
Thu 1/15:25 pmYUL - GSP
2 stops25h 58mMultiple Airlines
Deal found 12/15$591
This Kiwi.com deal was found by Cheapflights users on 12/16. 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.
Sat 12/209:41 pmGSP - YYZ
1 stop17h 12mMultiple Airlines
Mon 12/227:10 amYYZ - GSP
1 stop12h 13mMultiple Airlines
Deal found 12/16$664
This Kiwi.com deal was found by Cheapflights users on 12/15. 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.
Wed 12/244:40 pmGSP - YYZ
1 stop20h 43mMultiple Airlines
Sun 12/287:15 amYYZ - GSP
2 stops35h 20mMultiple Airlines
Deal found 12/15$667
This United Airlines deal was found by Cheapflights users on 12/16. 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 12/268:34 amGSP - YOW
1 stop12h 44mUnited Airlines
Fri 1/26:00 amYOW - GSP
1 stop5h 54mUnited Airlines
Deal found 12/16$686

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 December 18, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$363
(United Airlines)

One-way from

$129
(Kiwi.com)

Popular in

October

Cheapest in

February

Average price

$475
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. 20% potential increase in price ($133 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 December 2025
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 December 18, 2025.
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

GreenvilleMontreal

GSP - YUL

GSPYUL

Greenville

Sun 2/1

4:55 pm-2:54 pm

1 stop21h 59m

Montreal Pierre Elliott Trudeau Intl

Sun 2/8

8:00 am-8:58 am

1 stop24h 58m

$296

GreenvilleOttawa

GSP - YOW

GSPYOW

Greenville

Thu 1/8

11:49 am-4:30 pm

1 stop4h 41m

Ottawa

Sun 1/11

5:55 pm-11:48 pm

1 stop5h 53m

$363

GreenvilleMontreal

GSP - YUL

GSPYUL

Greenville

Mon 2/2

4:39 pm-12:38 am

2 stops31h 59m

Montreal Pierre Elliott Trudeau Intl

Wed 2/11

3:55 pm-9:07 pm

1 stop29h 12m

$370

GreenvilleToronto

GSP - YYZ

GSPYYZ

Greenville

Sat 1/31

7:16 am-4:35 pm

1 stop9h 19m

Toronto Pearson Intl

Sat 2/7

10:59 am-9:05 pm

1 stop10h 06m

$405

GreenvilleMontreal

GSP - YUL

GSPYUL

Greenville

Fri 1/30

9:48 am-3:10 pm

1 stop29h 22m

Montreal Pierre Elliott Trudeau Intl

Fri 2/6

6:45 am-7:38 pm

2 stops12h 53m

$443

GreenvilleOttawa

GSP - YOW

GSPYOW

Greenville

Thu 1/8

6:20 am-4:23 pm

2 stops10h 03m

Ottawa

Sun 1/11

5:55 pm-11:48 pm

1 stop5h 53m

$447

GreenvilleOttawa

GSP - YOW

GSPYOW

Greenville

Fri 5/15

7:42 pm-1:10 pm

2 stops17h 28m

Ottawa

Mon 5/18

7:37 pm-9:58 am

1 stop14h 21m

$450

GreenvilleMontreal

GSP - YUL

GSPYUL

Greenville

Fri 2/6

5:34 pm-4:01 pm

1 stop22h 27m

Montreal Pierre Elliott Trudeau Intl

Sun 2/8

6:00 am-4:52 pm

1 stop10h 52m

$524

GreenvilleMontreal

GSP - YUL

GSPYUL

Greenville

Fri 1/30

6:50 am-6:37 pm

2 stops11h 47m

Montreal Pierre Elliott Trudeau Intl

Fri 2/6

9:34 am-9:52 pm

2 stops12h 18m

$567

GreenvilleToronto

GSP - YYZ

GSPYYZ

Greenville

Mon 1/26

2:55 pm-6:03 pm

1 stop27h 08m

Toronto Pearson Intl

Thu 1/29

10:00 am-7:29 pm

1 stop9h 29m

$584

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 20 results
1
2

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.

What is the cheapest time of day to fly from GSP to ON?

Find hourly flight availability from Greenville to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

A simple way to save on the total cost of your ticket is to fly from Greenville to Region of Ontario in the afternoon. If you’re flexible enough to do this you can expect to save up to 52% on your trip compared to booking a flight in the morning.

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 December 18, 2025.
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
8,005 reviews

Crew

8.5

Food

7.3

Overall

7.9

Comfort

7.9

Boarding

8.1

Entertainment

7.9

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
8,005 reviews
Delta
7.9
Good
8,005 reviews

Crew

8.5

Food

7.3

Overall

7.9

Comfort

7.9

Boarding

8.1

Entertainment

7.9

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
9,091 reviews
Delta
7.9
Good
8,005 reviews

Crew

8.5

Food

7.3

Overall

7.9

Comfort

7.9

Boarding

8.1

Entertainment

7.9

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
11,054 reviews
Delta
7.9
Good
8,005 reviews

Crew

8.5

Food

7.3

Overall

7.9

Comfort

7.9

Boarding

8.1

Entertainment

7.9

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 United Airlines, American Airlines, and Air Canada fly from Greenville to Region of Ontario in about 4h 41m. The time it takes to get you to your destination can typically vary by up to 5h 22m. 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 - Ottawa or Greenville - Toronto Pearson Intl, 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 3 airlines flying from Greenville to Ontario

Discover the top 3 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$312Average$427FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$341Average$462FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$362Average$685FlexibilityNo cancel feeOn-time69%

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