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$152+ 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 8/7. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — YYZ
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 July 3, 2025.

Round-trip from

$378
(Kiwi.com)

One-way from

$152
(Kiwi.com)

Popular in

September

Cheapest in

February

Average price

$488
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. 4% potential increase in price ($21 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 3, 2025.

This Kiwi.com deal was found by Cheapflights users on 7/3. 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 8/42:50 pmGSP - YYZ
1 stop9h 09mMultiple Airlines
Sun 8/107:45 amYYZ - GSP
1 stop12h 43mMultiple Airlines
Deal found 7/3$337
This American Airlines deal was found by Cheapflights users on 7/2. 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 8/257:24 pmGSP - YYZ
1 stop16h 37mAmerican Airlines
Thu 9/411:00 amYYZ - GSP
1 stop11h 00mAmerican Airlines
Deal found 7/2$411
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 8/152:50 pmGSP - YUL
1 stop9h 25mMultiple Airlines
Sun 8/246:45 amYUL - GSP
1 stop13h 49mMultiple Airlines
Deal found 7/2$413
This Delta deal was found by Cheapflights users on 7/1. 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.
Thu 9/411:04 amGSP - YYZ
1 stop9h 39mDelta
Sun 9/76:15 amYYZ - GSP
1 stop8h 23mDelta
Deal found 7/1$440
This American Airlines deal was found by Cheapflights users on 7/2. 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 8/177:37 amGSP - YUL
1 stop9h 05mAmerican Airlines
Tue 8/2612:30 pmYUL - GSP
1 stop9h 35mAmerican Airlines
Deal found 7/2$451
This Delta deal was found by Cheapflights users on 7/2. 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.
Sat 8/166:00 amGSP - YUL
1 stop14h 04mDelta
Sat 8/236:00 amYUL - GSP
1 stop12h 18mDelta
Deal found 7/2$469
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Tue 8/2610:24 amGSP - YYZ
2 stops12h 46mUnited Airlines
Thu 9/410:05 amYYZ - GSP
1 stop8h 47mUnited Airlines
Deal found 7/2$517
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Tue 8/2610:24 amGSP - YUL
1 stop25h 06mUnited Airlines
Fri 8/297:10 pmYUL - GSP
1 stop19h 06mUnited Airlines
Deal found 7/1$580
This United Airlines deal was found by Cheapflights users on 7/3. 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.
Wed 11/269:10 amGSP - YOW
1 stop8h 02mUnited Airlines
Wed 12/36:20 amYOW - GSP
1 stop5h 24mUnited Airlines
Deal found 7/3$639
This Air Canada deal was found by Cheapflights users on 7/2. 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.
Wed 11/266:00 amGSP - YOW
1 stop7h 26mAir Canada
Wed 12/32:17 pmYOW - GSP
1 stop4h 38mAir Canada
Deal found 7/2$714
This Delta deal was found by Cheapflights users on 7/1. 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 11/262:25 pmGSP - YOW
2 stops9h 45mDelta
Wed 12/35:55 amYOW - GSP
2 stops11h 46mDelta
Deal found 7/1$737

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 July 3, 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

Fri 7/18

2:50 pm-11:47 pm

1 stop8h 57m

Toronto Pearson Intl

Wed 7/23

9:35 am-8:52 pm

1 stop11h 17m

$378

GreenvilleToronto

GSP - YYZ

GSPYYZ

Greenville

Mon 8/25

7:24 pm-12:01 pm

1 stop16h 37m

Toronto Pearson Intl

Thu 9/4

11:00 am-10:00 pm

1 stop11h 00m

$411

GreenvilleMontreal

GSP - YUL

GSPYUL

Greenville

Fri 8/15

2:50 pm-12:15 am

1 stop9h 25m

Montreal Pierre Elliott Trudeau Intl

Sun 8/24

6:45 am-8:34 pm

1 stop13h 49m

$413

GreenvilleToronto

GSP - YYZ

GSPYYZ

Greenville

Thu 9/4

11:04 am-8:43 pm

1 stop9h 39m

Toronto Pearson Intl

Sun 9/7

6:15 am-2:38 pm

1 stop8h 23m

$440

GreenvilleMontreal

GSP - YUL

GSPYUL

Greenville

Sun 8/17

7:37 am-4:42 pm

1 stop9h 05m

Montreal Pierre Elliott Trudeau Intl

Tue 8/26

12:30 pm-10:05 pm

1 stop9h 35m

$451

GreenvilleMontreal

GSP - YUL

GSPYUL

Greenville

Sat 8/16

6:00 am-8:04 pm

1 stop14h 04m

Montreal Pierre Elliott Trudeau Intl

Thu 8/21

6:00 am-6:18 pm

1 stop12h 18m

$469

GreenvilleToronto

GSP - YYZ

GSPYYZ

Greenville

Tue 8/26

10:24 am-11:10 pm

2 stops12h 46m

Toronto Pearson Intl

Thu 9/4

10:05 am-6:52 pm

1 stop8h 47m

$517

GreenvilleMontreal

GSP - YUL

GSPYUL

Greenville

Tue 8/26

10:24 am-11:30 am

1 stop25h 06m

Montreal Pierre Elliott Trudeau Intl

Fri 8/29

7:10 pm-2:16 pm

1 stop19h 06m

$580

GreenvilleOttawa

GSP - YOW

GSPYOW

Greenville

Wed 11/26

9:10 am-5:12 pm

1 stop8h 02m

Ottawa

Wed 12/3

6:20 am-11:44 am

1 stop5h 24m

$639

GreenvilleOttawa

GSP - YOW

GSPYOW

Greenville

Wed 11/26

6:00 am-1:26 pm

1 stop7h 26m

Ottawa

Wed 12/3

2:17 pm-6:55 pm

1 stop4h 38m

$714

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 18 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, 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 August is currently the most expensive (average of $348). 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 July 3, 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.

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 July 3, 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
8.0
Very good
7,982 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

8.0

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
7,982 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

8.0

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
8,861 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

8.0

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
7,982 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

8.0

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
2,917 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

8.0

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
9,681 reviews
Delta
8.0
Very good
7,982 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Entertainment

7.9

Overall

8.0

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?

    $204 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on United Airlines and American Airlines, with prices starting from $272 and $296, 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 August is currently the most expensive (average of $348). 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$219Average$449FlexibilityNo cancel feeOn-time71%
DeltaCheapest$311Average$376FlexibilityNo cancel feeOn-timeN/A
WestJetCheapest$392Average$626FlexibilityNo cancel feeOn-time60%

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