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$189+ Cheap flights from Greensboro to Ontario (GSO - 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 1/6. Fares are subject to change and may not be available on all flights or dates of travel.
GSO — ONT
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Greensboro to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Greensboro (GSO) 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 September 11, 2025.

Round-trip from

$309
(American Airlines)

One-way from

$189
(Delta)

Popular in

February

Cheapest in

October

Average price

$358
From Greensboro/H. Point to Ontario
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One-way flight from Greensboro/H. Point to Ontario
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Highest demand for flights based on searches. 24% potential increase in price ($144 potential increase over avg. RT price).
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Cheapest flight prices on average. 12% potential price decrease ($51 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Greensboro to Ontario

Cheapest flights from Greensboro to Ontario
Explore the most affordable flight options available from Greensboro to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Delta deal was found by Cheapflights users on 9/9. 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 10/36:37 pmGSO - ONT
1 stop6h 46mDelta
Tue 10/1411:36 amONT - GSO
1 stop9h 20mDelta
Deal found 9/9$309
This Delta deal was found by Cheapflights users on 9/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/135:20 amGSO - ONT
2 stops9h 58mDelta
Sat 11/1511:45 amONT - GSO
1 stop6h 55mDelta
Deal found 9/10$314
This Delta deal was found by Cheapflights users on 9/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/112:17 pmGSO - ONT
1 stop8h 02mDelta
Sat 10/1811:36 amONT - GSO
1 stop9h 20mDelta
Deal found 9/10$339
This Delta deal was found by Cheapflights users on 9/9. 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.
Tue 9/306:04 amGSO - ONT
2 stops9h 13mDelta
Mon 10/1310:00 pmONT - GSO
1 stop8h 29mDelta
Deal found 9/9$344
This Delta deal was found by Cheapflights users on 9/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/111:07 pmGSO - ONT
1 stop9h 12mDelta
Wed 10/1510:00 pmONT - GSO
1 stop8h 29mDelta
Deal found 9/10$369
This American Airlines deal was found by Cheapflights users on 9/11. 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.
Fri 10/36:18 pmGSO - ONT
1 stop7h 15mAmerican Airlines
Sun 10/511:59 pmONT - GSO
1 stop8h 59mAmerican Airlines
Deal found 9/11$374
This Delta deal was found by Cheapflights users on 9/9. 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.
Tue 9/306:00 amGSO - ONT
2 stops19h 23mDelta
Tue 10/1411:36 amONT - GSO
1 stop9h 20mDelta
Deal found 9/9$377
This Delta deal was found by Cheapflights users on 9/9. 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.
Tue 9/166:35 amGSO - ONT
1 stop7h 07mDelta
Tue 9/307:05 amONT - GSO
1 stop7h 34mDelta
Deal found 9/9$384
This Delta deal was found by Cheapflights users on 9/11. 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.
Tue 9/165:00 pmGSO - ONT
1 stop8h 23mDelta
Wed 10/111:55 amONT - GSO
1 stop7h 08mDelta
Deal found 9/11$387

Cheapflights Fare Finder

 
Customize your flight search to find flights from Greensboro 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 September 11, 2025.
Use the filters below to find and compare flights from Greensboro to Ontario that are best for you.

Fly from

Greensboro

Fly to

Ontario

Route

Depart

Return

Price

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Tue 9/30

5:00 pm-10:23 pm

1 stop8h 23m

Ontario

Tue 10/14

11:36 am-11:56 pm

1 stop9h 20m

$309

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Fri 10/3

6:18 pm-10:33 pm

1 stop7h 15m

Ontario

Sun 10/5

10:35 pm-10:11 am

1 stop8h 36m

$309

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Fri 10/3

6:37 pm-10:23 pm

1 stop6h 46m

Ontario

Tue 10/14

11:36 am-11:56 pm

1 stop9h 20m

$309

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Thu 11/13

5:20 am-10:40 am

1 stop8h 20m

Ontario

Sat 11/15

11:45 am-11:46 pm

1 stop9h 01m

$309

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Wed 10/1

12:56 pm-10:52 pm

2 stops12h 56m

Ontario

Tue 10/14

6:36 pm-9:44 am

2 stops12h 08m

$319

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Wed 10/1

6:35 am-10:42 am

1 stop7h 07m

Ontario

Wed 10/15

11:36 am-9:10 pm

1 stop6h 34m

$339

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Tue 9/30

6:35 am-10:42 am

1 stop7h 07m

Ontario

Mon 10/13

10:00 pm-9:29 am

1 stop8h 29m

$339

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Fri 10/3

5:00 pm-10:23 pm

1 stop8h 23m

Ontario

Mon 10/13

10:00 pm-9:29 am

1 stop8h 29m

$339

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Thu 10/23

6:00 am-10:26 am

1 stop7h 26m

$189

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Wed 10/22

2:58 pm-7:19 pm

1 stop7h 21m

$189

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 17 results
1
2

Best time to book a flight from Greensboro to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Greensboro 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 Greensboro to Ontario

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

Currently, August is the cheapest month in which you can book a flight from Greensboro to Ontario (average of $246). Flying from Greensboro to Ontario in March is currently the most expensive (average of $328). 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 GSO to ONT?

Find hourly flight availability from Greensboro 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 September 11, 2025.

It’s typically best to fly out from Greensboro to Ontario in the evening. Doing so could potentially save you 21% on the flight price compared to flying in the morning, which is usually more expensive.

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 September 11, 2025.
Read through reviews of airlines operating flights from Greensboro to Ontario, such as Delta and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Greensboro to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Greensboro to Ontario?

    There are many flights that can get you from Greensboro to Ontario in 7h 15m. Fly via Delta or American Airlines to get the fastest option. There are 2119 mi between Greensboro and Ontario. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    According to our current data, American Airlines ($308), and Delta ($308) offers the cheapest pricing from Greensboro to Ontario. American Airlines is priced at 30% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Greensboro to Ontario that include hotel bookings?

    Yes. In addition to deals on Greensboro to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Greensboro to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Greensboro to Ontario.

  • Can I find deals for business class flights from Greensboro to Ontario?

    Yes. Cheapflights offers flight deals from Greensboro 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 Greensboro to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Greensboro to Ontario (average of $246). Flying from Greensboro to Ontario in March is currently the most expensive (average of $328). 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 Greensboro to Ontario

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Top 2 airlines flying from Greensboro to Ontario

Discover the top 2 airlines that operate flights from Greensboro 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$308Average$414FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$308Average$438FlexibilityNo cancel feeOn-time71%

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