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$306+ 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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
GSO — ONT
Nov 26 — Dec 31
Wed 11/26
Wed 12/3
1 adult, Economy
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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 October 27, 2025.

This Delta deal was found by Cheapflights users on 10/25. 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 11/155:00 pmGSO - ONT
1 stop8h 06mDelta
Tue 11/1812:16 pmONT - GSO
1 stop8h 37mDelta
Deal found 10/25$309
This Delta deal was found by Cheapflights users on 10/25. 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 11/136:55 pmGSO - ONT
1 stop7h 09mDelta
Mon 11/1710:25 pmONT - GSO
1 stop7h 56mDelta
Deal found 10/25$339
This Delta deal was found by Cheapflights users on 10/25. 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 11/136:55 pmGSO - ONT
1 stop7h 09mDelta
Sat 11/154:49 pmONT - GSO
2 stops13h 32mDelta
Deal found 10/25$344
This Delta deal was found by Cheapflights users on 10/24. 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 11/74:05 pmGSO - ONT
1 stop9h 17mDelta
Thu 11/1310:25 pmONT - GSO
1 stop7h 56mDelta
Deal found 10/24$369
This Delta deal was found by Cheapflights users on 10/25. 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 11/164:01 pmGSO - ONT
1 stop10h 03mDelta
Wed 11/1910:25 pmONT - GSO
1 stop7h 56mDelta
Deal found 10/25$377
This Delta deal was found by Cheapflights users on 10/26. 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 11/205:07 pmGSO - ONT
2 stops9h 45mDelta
Sun 12/77:05 amONT - GSO
1 stop5h 59mDelta
Deal found 10/26$379
This American Airlines deal was found by Cheapflights users on 10/26. 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 11/206:46 amGSO - ONT
2 stops12h 15mAmerican Airlines
Sun 12/711:59 pmONT - GSO
2 stops8h 38mAmerican Airlines
Deal found 10/26$384
This Delta deal was found by Cheapflights users on 10/25. 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 11/96:55 pmGSO - ONT
1 stop7h 09mDelta
Sun 11/167:05 amONT - GSO
1 stop9h 08mDelta
Deal found 10/25$404
This Delta deal was found by Cheapflights users on 10/26. 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 11/32:58 pmGSO - ONT
1 stop7h 21mDelta
Tue 11/1110:25 pmONT - GSO
1 stop7h 56mDelta
Deal found 10/26$419
This Delta deal was found by Cheapflights users on 10/24. 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 11/62:58 pmGSO - ONT
1 stop7h 21mDelta
Sun 11/910:25 pmONT - GSO
1 stop7h 56mDelta
Deal found 10/24$424
This Delta deal was found by Cheapflights users on 10/25. 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 10/296:00 amGSO - ONT
1 stop7h 26mDelta
Sat 11/87:05 amONT - GSO
1 stop9h 14mDelta
Deal found 10/25$427

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 October 27, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$309
(Delta)

One-way from

$306
(United Airlines)

Popular in

February

Cheapest in

October

Average price

$308
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. 25% potential increase in price ($154 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 13% potential price decrease ($52 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 October 27, 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

Sat 2/14

5:25 am-11:38 am

1 stop9h 13m

Ontario

Tue 2/24

1:00 pm-9:58 pm

1 stop5h 58m

$309

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Sat 2/21

6:55 am-11:38 am

1 stop7h 43m

Ontario

Wed 2/25

1:00 pm-9:58 pm

1 stop5h 58m

$309

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Wed 1/21

2:15 pm-9:14 pm

1 stop9h 59m

Ontario

Sat 1/24

1:00 pm-9:58 pm

1 stop5h 58m

$309

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Sat 12/6

4:53 pm-10:05 pm

1 stop8h 12m

Ontario

Wed 12/10

7:05 am-4:04 pm

1 stop5h 59m

$309

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Fri 11/14

6:55 pm-11:04 pm

1 stop7h 09m

Ontario

Mon 11/17

10:25 pm-9:21 am

1 stop7h 56m

$339

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Tue 11/11

6:55 pm-11:04 pm

1 stop7h 09m

Ontario

Wed 11/19

10:25 pm-9:21 am

1 stop7h 56m

$339

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Thu 11/13

6:55 pm-11:04 pm

1 stop7h 09m

Ontario

Sat 11/15

4:49 pm-9:21 am

2 stops13h 32m

$344

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Thu 1/1

6:00 am-10:00 am

1 stop7h 00m

Ontario

Wed 1/7

1:04 pm-11:57 pm

1 stop7h 53m

$349

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Thu 1/1

6:00 am-10:00 am

1 stop7h 00m

Ontario

Sun 1/11

10:30 pm-9:23 am

1 stop7h 53m

$349

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Thu 1/1

6:00 am-10:00 am

1 stop7h 00m

Ontario

Fri 1/9

10:30 pm-10:30 am

1 stop9h 00m

$349

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 18 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 October.
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 May is currently the most expensive (average of $180). 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 October 27, 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 October 27, 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
7,996 reviews

Overall

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Boarding

8.2

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
7,996 reviews
Delta
7.9
Good
7,996 reviews

Overall

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Boarding

8.2

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
11,033 reviews
Delta
7.9
Good
7,996 reviews

Overall

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Boarding

8.2

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 13m. Fly via Delta to get the fastest option. There are 2119 mi between Greensboro and Ontario.

  • 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, 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 May is currently the most expensive (average of $180). 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 October 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$308Average$414FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$308Average$439FlexibilityNo cancel feeOn-time71%

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