Ontario

$178+ Cheap flights from Greenville to Ontario (GSP - ONT)

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 11/25. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — ONT
Nov 5 — Nov 121
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Cheap flight deals from Greenville to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Greenville (GSP) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 31, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

May

Cheapest in

January

Round-trip from

$426
(Delta)

One-way from

$178
(Delta)
Provider with most accurate pricing for Greenville-Ontario flight deals.
Provider most trusted by Cheapflights users for Greenville-Ontario flights.
High demand for flights, 20% potential price rise
Best time to find cheap flights, 18% potential price drop
From Greenville to Ontario
One-way flight from Greenville to Ontario

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 October 31, 2024.

This Delta deal was found by Cheapflights users on 10/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/157:00 amGSP - ONT
1 stop7h 01mDelta
Tue 12/1710:00 pmONT - GSP
1 stop8h 22mDelta
Deal found 10/31$426
This KAYAK deal was found by Cheapflights users on 10/31. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/112:05 pmGSP - ONT
2 stops11h 05mSouthwest
Fri 12/136:15 amONT - GSP
2 stops7h 15mSouthwest
Deal found 10/31$446
This American Airlines deal was found by Cheapflights users on 10/31. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/312:35 pmGSP - ONT
1 stop9h 02mAmerican Airlines
Wed 1/810:51 amONT - GSP
1 stop9h 09mAmerican Airlines
Deal found 10/31$522
This United Airlines deal was found by Cheapflights users on 10/30. 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.
Thu 12/55:15 pmGSP - ONT
1 stop7h 27mUnited Airlines
Sat 12/75:05 amONT - GSP
2 stops15h 23mUnited Airlines
Deal found 10/30$588
This Alaska Airlines deal was found by Cheapflights users on 10/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/910:00 amGSP - ONT
2 stops15h 15mAlaska Airlines
Sun 12/157:00 amONT - GSP
2 stops13h 29mAlaska Airlines
Deal found 10/30$596

Find flights from Greenville to Ontario within your budget

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 2,570,725 searches. Data last updated October 31, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

GreenvilleOntario

GSP - ONT

GSPONT

Greenville

Mon 11/25

4:07 pm-7:42 pm

1 stop6h 35m

$178

GreenvilleOntario

GSP - ONT

GSPONT

Greenville

Thu 1/23

2:35 pm-9:58 pm

2 stops10h 23m

$218

GreenvilleOntario

GSP - ONT

GSPONT

Greenville

Fri 1/24

4:10 pm-9:10 pm

1 stop8h 00m

$263

GreenvilleOntario

GSP - ONT

GSPONT

Greenville

Thu 1/23

11:08 am-10:34 am

3 stops26h 26m

$285

GreenvilleOntario

GSP - ONT

GSPONT

Greenville

Thu 1/2

7:59 pm-11:41 pm

1 stop6h 42m

Ontario

Thu 1/9

7:00 am-4:54 pm

1 stop6h 54m

$408

GreenvilleOntario

GSP - ONT

GSPONT

Greenville

Tue 2/4

7:45 am-1:51 pm

2 stops9h 06m

Ontario

Sun 2/9

7:30 pm-8:34 am

2 stops10h 04m

$436

GreenvilleOntario

GSP - ONT

GSPONT

Greenville

Wed 12/11

2:05 pm-10:10 pm

2 stops11h 05m

Ontario

Fri 12/13

6:15 am-4:30 pm

2 stops7h 15m

$446

GreenvilleOntario

GSP - ONT

GSPONT

Greenville

Tue 2/4

11:08 am-10:34 am

3 stops26h 26m

Ontario

Sun 2/9

11:33 am-8:30 pm

2 stops29h 57m

$541

GreenvilleOntario

GSP - ONT

GSPONT

Greenville

Thu 12/5

5:15 pm-9:42 pm

1 stop7h 27m

Ontario

Sat 12/7

5:05 am-11:28 pm

2 stops15h 23m

$588

Flights are sorted by cheapest first

Deals found on 10/30

Compare providers for flights from Greenville to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Greenville to Ontario in October.
ProviderPrice AccuracyTrust Score*Cancellation Policy
ExpediaPrice Accuracy1 starTrust Score*3 starsCancellation PolicyAirline Policy
FlightHubPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
eDreamsPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Greenville-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Greenville-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Greenville-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Greenville-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Greenville-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

Travel insights for flights from Greenville to Ontario

Get recent, data-driven insights about flights from Greenville to Ontario including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Greenville to Ontario?

Currently, September is the cheapest month in which you can book a flight from Greenville to Ontario (average of $236). Flying from Greenville to Ontario in December is currently the most expensive (average of $288). 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 ONT?

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 October 31, 2024.

It’s typically best to fly out from Greenville to Ontario in the evening. Doing so could potentially save you 29% on the flight price compared to flying at noon, which is usually more expensive.

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 Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 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 Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 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 October 31, 2024.
Read reviews from past customers who have flown Delta and United Airlines from Greenville to Ontario. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
5,116 reviews

Entertainment

7.7

Boarding

8.3

Comfort

8.1

Food

7.2

Crew

8.7

Overall

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

8.1
Very good
5,116 reviews
8.1
Very good
5,116 reviews

Entertainment

7.7

Boarding

8.3

Comfort

8.1

Food

7.2

Crew

8.7

Overall

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

8.0
Very good
9,420 reviews
8.1
Very good
5,116 reviews

Entertainment

7.7

Boarding

8.3

Comfort

8.1

Food

7.2

Crew

8.7

Overall

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

8.0
Very good
8,835 reviews
8.1
Very good
5,116 reviews

Entertainment

7.7

Boarding

8.3

Comfort

8.1

Food

7.2

Crew

8.7

Overall

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

7.4
Good
9,240 reviews
8.1
Very good
5,116 reviews

Entertainment

7.7

Boarding

8.3

Comfort

8.1

Food

7.2

Crew

8.7

Overall

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

7.2
Good
10,000 reviews
8.1
Very good
5,116 reviews

Entertainment

7.7

Boarding

8.3

Comfort

8.1

Food

7.2

Crew

8.7

Overall

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

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.
  • Can I find flights from Greenville to Ontario for under $500 on Cheapflights?

    Yes, there are multiple flights from Greenville to Ontario for under $500. The cheapest flight booked recently is on Delta for just $426, but on average you can expect to pay $475.

  • Are there last-minute flights available from Greenville to Ontario for under $700?

    There are currently 2+ open flights from Greenville to Ontario within the next 7 days for less than $700.

  • What are the cheapest airlines flying from Greenville to Ontario round-trip?

    Our cheapest airline available from Greenville to Ontario is Delta. Our recent data shows that you can find tickets from as low as $426 on this airline. Additional options worth looking into are American Airlines and Southwest, starting at $436 and $446 round-trip. Users have found that Delta is 11% cheaper than the other options available to this destination.

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

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $178. However, be on the lookout for offers from American Airlines and United Airlines, as they are both options that can get you from Greenville to Ontario for a low price.

  • What does GSP to ONT mean?

    Great question - GSP to ONT just means Greenville Airport to Ontario Airport. Now you’ll know what these unique codes when you look for flights!

  • Can I find deals for flights from Greenville to Ontario that include extra baggage allowance?

    The amount of baggage you can bring on your Greenville to Ontario flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Greenville to Ontario with specific airlines?

    Yes, Cheapflights allows you to browse and filter Greenville to Ontario flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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.

  • Can I find deals for flights from Greenville to Ontario that allow pets onboard?

    Many airlines flying from Greenville to Ontario offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Greenville to Ontario?

    Yes, you can often find last-minute deals on Greenville to Ontario flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Greenville to Ontario flight deals updated?

    The Greenville to Ontario flight deals you see on this page were last updated on 10/31.

  • What is the cheapest month to book a flight from Greenville to Ontario?

    Currently, September is the cheapest month in which you can book a flight from Greenville to Ontario (average of $236). Flying from Greenville to Ontario in December is currently the most expensive (average of $288). 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.

Top 2 airlines flying from Greenville to Ontario

Discover the top 2 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 2,570,725 searches. Data last updated October 31, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$266Average$470FlexibilityNo cancel feeOn-time71%
DeltaCheapest$356Average$560FlexibilityNo cancel feeOn-timeN/A
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