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$124+ 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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — YYZ
Απρ 5 — Απρ 121
Σαβ 4/5
Σαβ 4/12
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 Μάρτιος 31, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$351
(Justfly.com)

One-way from

$124
(Mytrip)

Popular in

January

Cheapest in

February

Average price

$437
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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High demand for flights, 11% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in March 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 Μάρτιος 31, 2025.

This Justfly.com deal was found by Cheapflights users on 3/31. 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.
Παρ 5/96:00 amGSP - YYZ
1 stop7h 47mMultiple Airlines
Κυρ 5/186:30 amYYZ - GSP
1 stop3h 49mMultiple Airlines
Deal found 3/31$351
This United Airlines deal was found by Cheapflights users on 3/30. 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.
Πεμ 5/16:45 amGSP - YYZ
1 stop5h 04mUnited Airlines
Κυρ 5/411:00 amYYZ - GSP
1 stop12h 00mUnited Airlines
Deal found 3/30$376
This Air Canada deal was found by Cheapflights users on 3/30. 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.
Τετ 5/1410:27 amGSP - YUL
1 stop5h 23mAir Canada
Τετ 5/219:15 amYUL - GSP
1 stop4h 57mAir Canada
Deal found 3/30$381
This American Airlines deal was found by Cheapflights users on 3/30. 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.
Κυρ 5/256:26 amGSP - YUL
2 stops8h 59mAmerican Airlines
Παρ 5/302:35 pmYUL - GSP
1 stop9h 15mAmerican Airlines
Deal found 3/30$391
This Justfly.com deal was found by Cheapflights users on 3/30. 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.
Κυρ 5/2512:30 pmGSP - YUL
1 stop10h 46mWestJet
Παρ 5/306:00 amYUL - GSP
1 stop4h 19mWestJet
Deal found 3/30$409
This Justfly.com deal was found by Cheapflights users on 3/30. 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.
Κυρ 4/65:46 amGSP - YUL
1 stop5h 47mMultiple Airlines
Σαβ 4/124:31 pmYUL - GSP
1 stop6h 06mMultiple Airlines
Deal found 3/30$505
This Delta deal was found by Cheapflights users on 3/30. 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.
Παρ 7/256:05 pmGSP - YUL
1 stop16h 20mDelta
Πεμ 8/76:00 amYUL - GSP
1 stop11h 59mDelta
Deal found 3/30$510
This Priceline deal was found by Cheapflights users on 3/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Σαβ 8/237:45 amGSP - YYZ
1 stop4h 29mWestJet
Τρι 8/2611:30 amYYZ - GSP
1 stop4h 49mWestJet
Deal found 3/30$544
This American Airlines deal was found by Cheapflights users on 3/30. 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.
Πεμ 5/15:40 amGSP - YYZ
1 stop4h 15mAmerican Airlines
Κυρ 5/43:25 pmYYZ - GSP
1 stop7h 14mAmerican Airlines
Deal found 3/30$666
This Delta deal was found by Cheapflights users on 3/30. 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.
Τετ 9/2411:50 amGSP - YYZ
1 stop8h 39mDelta
Τρι 10/712:15 pmYYZ - GSP
2 stops11h 22mDelta
Deal found 3/30$730
This United deal was found by Cheapflights users on 3/30. 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.
Πεμ 6/126:00 amGSP - YUL
2 stops14h 21mUnited Airlines
Δευ 6/166:05 pmYUL - GSP
2 stops20h 12mUnited Airlines
Deal found 3/30$937

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 Μάρτιος 31, 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

Παρ 5/9

6:00 am-1:47 pm

1 stop7h 47m

Toronto Pearson Intl

Κυρ 5/18

6:30 am-10:19 am

1 stop3h 49m

$351

GreenvilleToronto

GSP - YYZ

GSPYYZ

Greenville

Πεμ 5/1

6:45 am-11:49 am

1 stop5h 04m

Toronto Pearson Intl

Κυρ 5/4

11:00 am-11:00 pm

1 stop12h 00m

$376

GreenvilleMontreal

GSP - YUL

GSPYUL

Greenville

Τετ 5/14

10:27 am-3:50 pm

1 stop5h 23m

Montreal Pierre Elliott Trudeau Intl

Τετ 5/21

9:15 am-2:12 pm

1 stop4h 57m

$381

GreenvilleMontreal

GSP - YUL

GSPYUL

Greenville

Κυρ 5/25

6:26 am-3:25 pm

2 stops8h 59m

Montreal Pierre Elliott Trudeau Intl

Παρ 5/30

2:35 pm-11:50 pm

1 stop9h 15m

$391

GreenvilleMontreal

GSP - YUL

GSPYUL

Greenville

Κυρ 5/25

12:30 pm-11:16 pm

1 stop10h 46m

Montreal Pierre Elliott Trudeau Intl

Παρ 5/30

6:00 am-10:19 am

1 stop4h 19m

$409

GreenvilleMontreal

GSP - YUL

GSPYUL

Greenville

Παρ 7/25

6:05 pm-10:25 am

1 stop16h 20m

Montreal Pierre Elliott Trudeau Intl

Πεμ 8/7

6:00 am-5:59 pm

1 stop11h 59m

$510

GreenvilleToronto

GSP - YYZ

GSPYYZ

Greenville

Σαβ 8/23

7:45 am-12:14 pm

1 stop4h 29m

Toronto Pearson Intl

Τρι 8/26

11:30 am-4:19 pm

1 stop4h 49m

$544

GreenvilleToronto

GSP - YYZ

GSPYYZ

Greenville

Πεμ 5/1

5:40 am-9:55 am

1 stop4h 15m

Toronto Pearson Intl

Κυρ 5/4

3:25 pm-10:39 pm

1 stop7h 14m

$666

GreenvilleToronto

GSP - YYZ

GSPYYZ

Greenville

Τετ 9/24

11:50 am-8:29 pm

1 stop8h 39m

Toronto Pearson Intl

Τρι 10/7

12:15 pm-11:37 pm

2 stops11h 22m

$730

GreenvilleMontreal

GSP - YUL

GSPYUL

Greenville

Τετ 9/10

6:02 am-4:10 pm

2 stops10h 08m

Montreal Pierre Elliott Trudeau Intl

Κυρ 9/14

5:00 am-2:16 pm

2 stops9h 16m

$785

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 18 results
1
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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 $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 Μάρτιος 31, 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 Μάρτιος 31, 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
7,899 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

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
7,899 reviews
Delta
8.0
Very good
7,899 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

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
8,614 reviews
Delta
8.0
Very good
7,899 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

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
7,899 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

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
2,789 reviews
Delta
8.0
Very good
7,899 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

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
9,004 reviews
Delta
8.0
Very good
7,899 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

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?

    $149 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on WestJet and United Airlines, with prices starting from $190 and $194, 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 $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 4 airlines flying from Greenville to Ontario

Discover the top 4 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 Μάρτιος 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$286Average$422FlexibilityNo cancel feeOn-time71%
DeltaCheapest$321Average$433FlexibilityNo cancel feeOn-timeN/A
WestJetCheapest$392Average$574FlexibilityNo cancel feeOn-time60%
United AirlinesCheapest$542Average$639FlexibilityNo cancel feeOn-time69%
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