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$144+ 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 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — YYZ
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
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 April 17, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$341
(United Airlines)

One-way from

$144
(Kiwi.com)

Popular in

September

Cheapest in

February

Average price

$335
Provider with most accurate pricing for Greenville-Toronto (YTO) flight deals.
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Provider most trusted by Cheapflights users for Greenville-Toronto (YTO) flights.
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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 ($14 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 17, 2025.

This United Airlines deal was found by Cheapflights users on 4/17. 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 9/246:02 amGSP - YYZ
1 stop3h 35mUnited Airlines
Tue 10/75:40 pmYYZ - GSP
1 stop5h 33mUnited Airlines
Deal found 4/17$341
This American Airlines deal was found by Cheapflights users on 4/17. 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 6/297:58 amGSP - YUL
1 stop14h 57mAmerican Airlines
Tue 7/87:29 amYUL - GSP
1 stop10h 11mAmerican Airlines
Deal found 4/17$356
This WestJet deal was found by Cheapflights users on 4/17. 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.
Wed 7/236:45 amGSP - YYZ
2 stops23h 06mWestJet
Thu 7/247:59 amYYZ - GSP
1 stop6h 18mWestJet
Deal found 4/17$358
This Delta deal was found by Cheapflights users on 4/17. 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.
Fri 6/1311:15 amGSP - YYZ
1 stop6h 44mDelta
Wed 6/186:49 pmYYZ - GSP
1 stop5h 06mDelta
Deal found 4/17$364
This Delta deal was found by Cheapflights users on 4/17. 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.
Sun 6/292:59 pmGSP - YUL
1 stop8h 55mDelta
Mon 7/76:00 amYUL - GSP
1 stop16h 17mDelta
Deal found 4/17$424
This American Airlines deal was found by Cheapflights users on 4/17. 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 7/207:58 amGSP - YYZ
1 stop9h 17mAmerican Airlines
Sat 8/27:35 amYYZ - GSP
1 stop12h 55mAmerican Airlines
Deal found 4/17$426
This United deal was found by Cheapflights users on 4/16. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/266:00 amGSP - YOW
1 stop27h 11mMultiple Airlines
Wed 7/306:05 amYOW - GSP
1 stop10h 58mMultiple Airlines
Deal found 4/16$691
This Justfly.com deal was found by Cheapflights users on 4/16. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/265:45 amGSP - YOW
2 stops25h 00mWestJet
Wed 7/305:55 amYOW - GSP
2 stops11h 47mWestJet
Deal found 4/16$732
This Mytrip deal was found by Cheapflights users on 4/17. 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.
Fri 5/29:45 pmGSP - YUL
3 stops21h 23mMultiple Airlines
Tue 5/66:45 amYUL - GSP
2 stops15h 44mMultiple Airlines
Deal found 4/17$742
This United Airlines deal was found by Cheapflights users on 4/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/187:45 pmGSP - YSB
2 stops19h 32mUnited Airlines
Tue 8/269:45 amYSB - GSP
2 stops28h 31mUnited Airlines
Deal found 4/15$785
This Justfly.com deal was found by Cheapflights users on 4/17. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/173:35 pmGSP - YUL
1 stop5h 51mWestJet
Sun 4/2012:38 pmYUL - GSP
1 stop20h 36mWestJet
Deal found 4/17$814
This United Airlines deal was found by Cheapflights users on 4/17. 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 6/36:13 amGSP - YUL
2 stops12h 12mUnited Airlines
Wed 6/48:00 pmYUL - GSP
2 stops16h 22mUnited Airlines
Deal found 4/17$1,074

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 April 17, 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

Wed 9/24

6:02 am-9:37 am

1 stop3h 35m

Toronto Pearson Intl

Tue 10/7

5:40 pm-11:13 pm

1 stop5h 33m

$341

GreenvilleMontreal

GSP - YUL

GSPYUL

Greenville

Sun 6/29

7:58 am-10:55 pm

1 stop14h 57m

Montreal Pierre Elliott Trudeau Intl

Tue 7/8

7:29 am-5:40 pm

1 stop10h 11m

$356

GreenvilleToronto

GSP - YYZ

GSPYYZ

Greenville

Wed 7/23

6:45 am-5:51 am

2 stops23h 06m

Toronto Pearson Intl

Thu 7/24

7:59 am-2:17 pm

1 stop6h 18m

$358

GreenvilleToronto

GSP - YYZ

GSPYYZ

Greenville

Fri 6/13

11:15 am-5:59 pm

1 stop6h 44m

Toronto Pearson Intl

Wed 6/18

6:49 pm-11:55 pm

1 stop5h 06m

$364

GreenvilleMontreal

GSP - YUL

GSPYUL

Greenville

Sun 6/29

2:59 pm-11:54 pm

1 stop8h 55m

Montreal Pierre Elliott Trudeau Intl

Mon 7/7

6:00 am-10:17 pm

1 stop16h 17m

$424

GreenvilleToronto

GSP - YYZ

GSPYYZ

Greenville

Sun 7/20

7:58 am-5:15 pm

1 stop9h 17m

Toronto Pearson Intl

Sat 8/2

7:35 am-8:30 pm

1 stop12h 55m

$426

GreenvilleOttawa

GSP - YOW

GSPYOW

Greenville

Sat 7/26

6:00 am-9:11 am

1 stop27h 11m

Ottawa

Wed 7/30

6:05 am-5:03 pm

1 stop10h 58m

$691

GreenvilleOttawa

GSP - YOW

GSPYOW

Greenville

Sat 7/26

5:45 am-6:45 am

2 stops25h 00m

Ottawa

Wed 7/30

5:55 am-5:42 pm

2 stops11h 47m

$732

GreenvilleMontreal

GSP - YUL

GSPYUL

Greenville

Fri 5/2

9:45 pm-7:08 pm

3 stops21h 23m

Montreal Pierre Elliott Trudeau Intl

Tue 5/6

6:45 am-10:29 pm

2 stops15h 44m

$742

GreenvilleSudbury

GSP - YSB

GSPYSB

Greenville

Mon 8/18

7:45 pm-3:17 pm

2 stops19h 32m

Sudbury

Tue 8/26

9:45 am-2:16 pm

2 stops28h 31m

$785

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Showing 1-10 of 17 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 July is currently the most expensive (average of $359). 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 April 17, 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 April 17, 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
7,917 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,917 reviews
Delta
8.0
Very good
7,917 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,667 reviews
Delta
8.0
Very good
7,917 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,917 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
WestJet
7.2
Good
2,809 reviews
Delta
8.0
Very good
7,917 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Canada
7.0
Good
9,142 reviews
Delta
8.0
Very good
7,917 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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?

    $148 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on United Airlines and WestJet, with prices starting from $149 and $235, respectively.

  • 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, 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 $359). 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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$286Average$423FlexibilityNo cancel feeOn-time71%
DeltaCheapest$311Average$433FlexibilityNo cancel feeOn-timeN/A
WestJetCheapest$392Average$574FlexibilityNo cancel feeOn-time60%

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