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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 1/1. Fares are subject to change and may not be available on all flights or dates of travel.
GSO — ONT
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap 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 December 12, 2025.

This Delta deal was found by Cheapflights users on 12/10. 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 12/256:00 amGSO - ONT
1 stop7h 00mDelta
Tue 12/3010:29 pmONT - GSO
1 stop8h 18mDelta
Deal found 12/10$424
This Delta deal was found by Cheapflights users on 12/10. 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.
Mon 12/226:00 amGSO - ONT
1 stop7h 00mDelta
Tue 12/3010:29 pmONT - GSO
1 stop8h 18mDelta
Deal found 12/10$464
This Delta deal was found by Cheapflights users on 12/10. 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.
Wed 12/243:00 pmGSO - ONT
1 stop7h 50mDelta
Thu 12/2511:15 amONT - GSO
1 stop7h 15mDelta
Deal found 12/10$513
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/188:24 amGSO - ONT
1 stop7h 14mUnited Airlines
Fri 1/95:05 amONT - GSO
2 stops12h 46mUnited Airlines
Deal found 12/10$514
This Delta deal was found by Cheapflights users on 12/10. 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 12/256:00 amGSO - ONT
1 stop7h 00mDelta
Thu 1/17:05 amONT - GSO
1 stop8h 54mDelta
Deal found 12/10$522
This American Airlines deal was found by Cheapflights users on 12/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:30 amGSO - ONT
2 stops12h 37mAmerican Airlines
Tue 12/3010:40 pmONT - GSO
1 stop7h 15mAmerican Airlines
Deal found 12/10$531
This Delta deal was found by Cheapflights users on 12/10. 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.
Sun 12/216:00 amGSO - ONT
1 stop7h 00mDelta
Wed 12/317:05 amONT - GSO
1 stop8h 54mDelta
Deal found 12/10$543
This Delta deal was found by Cheapflights users on 12/10. 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 12/256:00 amGSO - ONT
1 stop7h 00mDelta
Fri 12/2610:29 pmONT - GSO
1 stop7h 52mDelta
Deal found 12/10$548
This Delta deal was found by Cheapflights users on 12/10. 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.
Mon 12/226:00 amGSO - ONT
1 stop7h 00mDelta
Thu 1/17:05 amONT - GSO
1 stop8h 54mDelta
Deal found 12/10$561

Find 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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$309
(Delta)

One-way from

$189
(Delta)

Popular in

February

Cheapest in

October

Average price

$398
Provider with most accurate pricing for Greensboro/H. Point-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Greensboro/H. Point-Ontario flights.
Search Deals
From Greensboro/H. Point to Ontario
Search Deals
One-way flight from Greensboro/H. Point to Ontario
Search Deals
Highest demand for flights based on searches. 27% potential increase in price ($164 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 13% potential price decrease ($53 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 12, 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

Wed 1/21

7:05 am-4:05 pm

2 stops12h 00m

Ontario

Sat 1/24

10:58 am-9:18 pm

1 stop7h 20m

$314

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Wed 1/28

5:20 am-11:31 am

1 stop9h 11m

Ontario

Tue 2/3

12:41 pm-9:49 pm

1 stop6h 08m

$329

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Wed 1/21

6:54 am-11:31 am

1 stop7h 37m

Ontario

Sat 1/24

12:41 pm-11:47 pm

1 stop8h 06m

$349

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Thu 1/8

5:22 am-11:31 am

1 stop9h 09m

Ontario

Sun 1/11

10:30 pm-9:21 am

1 stop7h 51m

$349

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Thu 1/8

6:54 am-11:31 am

1 stop7h 37m

Ontario

Thu 1/8

10:30 pm-9:21 am

1 stop7h 51m

$377

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Tue 1/6

6:54 am-11:31 am

1 stop7h 37m

Ontario

Thu 1/8

12:41 pm-11:47 pm

1 stop8h 06m

$377

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Fri 1/9

5:22 am-11:31 am

1 stop9h 09m

Ontario

Fri 1/9

10:30 pm-10:28 am

1 stop8h 58m

$377

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Tue 1/6

6:54 am-11:31 am

1 stop7h 37m

Ontario

Wed 1/7

10:30 pm-9:21 am

1 stop7h 51m

$377

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Wed 1/7

6:54 am-11:31 am

1 stop7h 37m

Ontario

Fri 1/9

10:30 pm-10:28 am

1 stop8h 58m

$377

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Wed 3/11

5:19 am-11:35 am

1 stop9h 16m

Ontario

Sun 3/22

10:30 pm-9:20 am

1 stop7h 50m

$402

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Showing 1-10 of 19 results
1
2

Compare providers for flights from Greensboro 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 Greensboro to Ontario in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*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 Greensboro-Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Greensboro-Ontario flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Greensboro-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Greensboro-Ontario flights, Cheapflights users trust eDreams the most. eDreams 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 Greensboro-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 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, June is the cheapest month in which you can book a flight from Greensboro to Ontario (average of $105). Flying from Greensboro to Ontario in November is currently the most expensive (average of $195). 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 December 12, 2025.

It’s typically best to fly out from Greensboro to Ontario in the evening. Doing so could potentially save you 20% 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 December 12, 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
7.9
Good
8,008 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.1

Overall

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
7.9
Good
8,008 reviews
Delta
7.9
Good
8,008 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.1

Overall

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
11,050 reviews
Delta
7.9
Good
8,008 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.1

Overall

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 9h 11m. Fly via American Airlines or Delta 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 28% lower than the current average price of a flight leaving 3 months from now.

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

    One-way options have recently been found by users for as low as $184 on American Airlines. Other airlines that offer cheap prices include Delta from $215 and United Airlines from $234 one-way.

  • 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, June is the cheapest month in which you can book a flight from Greensboro to Ontario (average of $105). Flying from Greensboro to Ontario in November is currently the most expensive (average of $195). 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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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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$308Average$414FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$308Average$438FlexibilityNo cancel feeOn-time71%

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