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$188+ 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 7/25. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — YYZ
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
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Cheap flight deals from Greenville to Ontario

Keep the following information in mind while searching for Greenville to Ontario flight deals. Data was last updated junio 12, 2025.

Round-trip from

$306
(Mytrip)

One-way from

$188
(Kiwi.com)

Popular in

September

Cheapest in

February

Average price

$495
From Greenville to Ontario
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One-way flight from Greenville to Ontario
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Highest demand for flights based on searches. 3% potential increase in price ($15 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find 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 junio 12, 2025.

This Mytrip deal was found by Cheapflights users on 6/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/84:05 pmGSP - YYZ
1 stop22h 00mMultiple Airlines
mié. 8/134:00 pmYYZ - GSP
1 stop22h 35mMultiple Airlines
Deal found 6/11$306
This American Airlines deal was found by Cheapflights users on 6/11. 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.
mié. 9/247:35 amGSP - YYZ
1 stop8h 58mAmerican Airlines
mar. 10/712:39 pmYYZ - GSP
1 stop8h 43mAmerican Airlines
Deal found 6/11$458
This Delta deal was found by Cheapflights users on 6/11. 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.
lun. 6/306:00 amGSP - YUL
1 stop15h 20mDelta
vie. 7/46:00 amYUL - GSP
1 stop12h 18mDelta
Deal found 6/11$468
This Delta deal was found by Cheapflights users on 6/11. 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.
vie. 7/1111:15 amGSP - YYZ
1 stop9h 38mDelta
vie. 7/182:30 pmYYZ - GSP
1 stop9h 23mDelta
Deal found 6/11$489
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/309:42 pmGSP - YUL
2 stops20h 13mMultiple Airlines
sáb. 8/21:10 pmYUL - GSP
2 stops30h 16mMultiple Airlines
Deal found 6/10$506
This American Airlines deal was found by Cheapflights users on 6/11. 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.
mar. 7/15:28 amGSP - YUL
2 stops11h 17mAmerican Airlines
mar. 7/85:30 pmYUL - GSP
1 stop16h 32mAmerican Airlines
Deal found 6/11$552
This WestJet deal was found by Cheapflights users on 6/11. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/266:30 amGSP - YYZ
2 stops16h 24mWestJet
mié. 8/277:55 amYYZ - GSP
1 stop6h 43mWestJet
Deal found 6/11$557
This United Airlines deal was found by Cheapflights users on 6/11. 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.
sáb. 7/267:45 pmGSP - YYZ
2 stops16h 04mUnited Airlines
sáb. 8/27:00 amYYZ - GSP
1 stop15h 42mUnited Airlines
Deal found 6/11$562
This United Airlines deal was found by Cheapflights users on 6/10. 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.
mié. 7/306:00 amGSP - YUL
1 stop9h 00mUnited Airlines
sáb. 8/22:00 pmYUL - GSP
1 stop9h 50mUnited Airlines
Deal found 6/10$614
This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/266:45 amGSP - YOW
2 stops14h 05mWestJet
mié. 12/35:55 amYOW - GSP
2 stops16h 06mWestJet
Deal found 6/11$769
This United Airlines deal was found by Cheapflights users on 6/10. 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.
mié. 11/2610:21 amGSP - YOW
1 stop4h 06mUnited Airlines
mié. 12/310:35 amYOW - GSP
1 stop10h 36mUnited Airlines
Deal found 6/10$772
This Air Canada deal was found by Cheapflights users on 6/12. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/2610:21 amGSP - YOW
2 stops8h 42mAir Canada
mié. 12/32:46 pmYOW - GSP
1 stop4h 09mAir Canada
Deal found 6/12$785

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 junio 12, 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

GreenvilleToronto

GSP - YYZ

GSPYYZ

Greenville

vie. 8/8

4:05 pm-2:05 pm

1 stop22h 00m

Toronto Pearson Intl

mié. 8/13

4:00 pm-2:35 pm

1 stop22h 35m

$306

GreenvilleToronto

GSP - YYZ

GSPYYZ

Greenville

mié. 9/24

7:35 am-4:33 pm

1 stop8h 58m

Toronto Pearson Intl

mar. 10/7

12:39 pm-9:22 pm

1 stop8h 43m

$458

GreenvilleMontreal

GSP - YUL

GSPYUL

Greenville

lun. 6/30

6:00 am-9:20 pm

1 stop15h 20m

Montreal Pierre Elliott Trudeau Intl

vie. 7/4

6:00 am-6:18 pm

1 stop12h 18m

$468

GreenvilleToronto

GSP - YYZ

GSPYYZ

Greenville

vie. 7/11

11:15 am-8:53 pm

1 stop9h 38m

Toronto Pearson Intl

vie. 7/18

2:30 pm-11:53 pm

1 stop9h 23m

$489

GreenvilleMontreal

GSP - YUL

GSPYUL

Greenville

mié. 7/30

9:42 pm-5:55 pm

2 stops20h 13m

Montreal Pierre Elliott Trudeau Intl

sáb. 8/2

1:10 pm-7:26 pm

2 stops30h 16m

$506

GreenvilleMontreal

GSP - YUL

GSPYUL

Greenville

mar. 7/1

5:28 am-4:45 pm

2 stops11h 17m

Montreal Pierre Elliott Trudeau Intl

mar. 7/8

5:30 pm-10:02 am

1 stop16h 32m

$552

GreenvilleToronto

GSP - YYZ

GSPYYZ

Greenville

mar. 8/26

6:30 am-10:54 pm

2 stops16h 24m

Toronto Pearson Intl

mié. 8/27

7:55 am-2:38 pm

1 stop6h 43m

$557

GreenvilleToronto

GSP - YYZ

GSPYYZ

Greenville

sáb. 7/26

7:45 pm-11:49 am

2 stops16h 04m

Toronto Pearson Intl

mié. 7/30

7:00 am-4:54 pm

1 stop9h 54m

$562

GreenvilleMontreal

GSP - YUL

GSPYUL

Greenville

mié. 7/30

6:00 am-3:00 pm

1 stop9h 00m

Montreal Pierre Elliott Trudeau Intl

sáb. 8/2

2:00 pm-11:50 pm

1 stop9h 50m

$614

GreenvilleOttawa

GSP - YOW

GSPYOW

Greenville

mié. 11/26

6:45 am-8:50 pm

2 stops14h 05m

Ottawa

mié. 12/3

5:55 am-10:01 pm

2 stops16h 06m

$769

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 21 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, January is the cheapest month in which you can book a flight from Greenville to Region of Ontario (average of $243). Flying from Greenville to Region of Ontario in July is currently the most expensive (average of $353). 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 junio 12, 2025.

When flying from Greenville to Region of Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Region of Ontario ranges from 2.0 - 3.3 inches per month. June is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Region of Ontario when rainfall is around 2.0 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Region of Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

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 junio 12, 2025.
Get a feel of what it's like to fly with Delta, United Airlines and American Airlines from Greenville to Ontario by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
WestJet
7.2
Good
2,868 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
9,531 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

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

    $234 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on American Airlines and United Airlines, with prices starting from $265 and $312, respectively.

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

    While some choose either Greenville - Montreal Pierre Elliott Trudeau Intl or Greenville - Ottawa, Greenville - Toronto Pearson 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, January is the cheapest month in which you can book a flight from Greenville to Region of Ontario (average of $243). Flying from Greenville to Region of Ontario in July is currently the most expensive (average of $353). 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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$219Average$423FlexibilityNo cancel feeOn-time71%
DeltaCheapest$311Average$409FlexibilityNo cancel feeOn-timeN/A
WestJetCheapest$496Average$574FlexibilityNo cancel feeOn-time60%

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