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Ontario

$314+ 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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
GSO — ONT
Aug 25 — Sep 11
Tue 8/25
Tue 9/1
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 July 26, 2026.

This American Airlines deal was found by Cheapflights users on 7/22. 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.
Wed 11/187:00 am
GSO
-
ONT
1 stop7h 52m
American Airlines
Wed 12/210:34 pm
ONT
-
GSO
1 stop7h 13m
American Airlines
Deal found 7/22$429
This American Airlines deal was found by Cheapflights users on 7/22. 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.
Sat 10/37:00 am
GSO
-
ONT
1 stop9h 25m
American Airlines
Wed 10/710:25 am
ONT
-
GSO
1 stop9h 08m
American Airlines
Deal found 7/22$439
This American Airlines deal was found by Cheapflights users on 7/22. 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.
Wed 12/167:00 am
GSO
-
ONT
1 stop7h 53m
American Airlines
Wed 1/66:27 am
ONT
-
GSO
2 stops11h 51m
American Airlines
Deal found 7/22$452
This United Airlines deal was found by Cheapflights users on 7/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/32:55 pm
GSO
-
ONT
2 stops10h 56m
United Airlines
Wed 10/77:00 am
ONT
-
GSO
2 stops13h 42m
United Airlines
Deal found 7/24$471
This American Airlines deal was found by Cheapflights users on 7/22. 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 10/237:06 am
GSO
-
ONT
1 stop9h 24m
American Airlines
Tue 10/2710:10 pm
ONT
-
GSO
1 stop7h 13m
American Airlines
Deal found 7/22$482
This American Airlines deal was found by Cheapflights users on 7/22. 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 11/247:00 am
GSO
-
ONT
1 stop9h 36m
American Airlines
Tue 12/110:30 pm
ONT
-
GSO
1 stop9h 23m
American Airlines
Deal found 7/22$487
This United Airlines deal was found by Cheapflights users on 7/21. 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 8/2710:40 am
GSO
-
ONT
2 stops15h 19m
United Airlines
Mon 8/317:13 pm
ONT
-
GSO
2 stops11h 52m
United Airlines
Deal found 7/21$489
This American Airlines deal was found by Cheapflights users on 7/25. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/95:17 pm
GSO
-
ONT
1 stop8h 02m
American Airlines
Wed 12/2310:40 pm
ONT
-
GSO
1 stop7h 15m
American Airlines
Deal found 7/25$497
This United Airlines deal was found by Cheapflights users on 7/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1811:40 am
GSO
-
ONT
2 stops12h 11m
United Airlines
Wed 12/26:53 pm
ONT
-
GSO
2 stops12h 26m
United Airlines
Deal found 7/24$499

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 July 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$429
(American Airlines)

One-way from

$314
(Delta)

Popular in

December

Cheapest in

March

Average price

$426
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. 10% potential increase in price ($55 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
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 July 26, 2026.
Use the filters below to find and compare flights from Greensboro to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Wed 1/20

12:05 pm-9:21 pm

2 stops12h 16m

Ontario

Sun 1/24

5:00 am-7:04 pm

2 stops11h 04m

$499

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Wed 8/5

6:15 am-12:47 pm

2 stops9h 32m

Ontario

Sun 8/9

6:10 am-11:36 pm

2 stops14h 26m

$545

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Sat 9/12

5:51 pm-10:59 pm

1 stop8h 08m

Ontario

Tue 9/15

9:01 am-10:01 am

2 stops22h 00m

$553
Quickest round-trip

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Fri 9/4

5:51 pm-10:35 pm

1 stop7h 44m

Ontario

Sun 9/6

7:00 am-5:15 pm

1 stop7h 15m

$559

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Wed 11/18

11:40 am-8:51 pm

2 stops12h 11m

Ontario

Wed 12/2

6:45 am-5:04 pm

1 stop7h 19m

$560

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Sat 9/19

5:51 pm-10:59 pm

1 stop8h 08m

Ontario

Sat 9/26

6:00 am-9:13 pm

2 stops12h 13m

$565

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Sun 10/4

4:27 pm-10:24 pm

1 stop8h 57m

Ontario

Wed 10/7

12:18 pm-11:59 pm

1 stop8h 41m

$567

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Thu 8/6

5:30 am-10:42 am

1 stop8h 12m

Ontario

Sun 8/9

10:00 pm-9:22 am

1 stop8h 22m

$637

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Thu 8/20

5:51 pm-10:35 pm

1 stop7h 44m

Ontario

Tue 9/1

7:00 am-9:20 pm

1 stop11h 20m

$643
Cheapest one-way

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Wed 8/12

6:39 am-10:42 am

1 stop7h 03m

$314

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/21

Showing 1-10 of 17 resultsSorted by cheapest first
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 July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Greensboro-Ontario flight deals on Cheapflights vs. FlightHub >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 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 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, March is the cheapest month in which you can book a flight from Greensboro to Ontario (average of $348). Flying from Greensboro to Ontario in December is currently the most expensive (average of $590). 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.

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 July 26, 2026.
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
7.8
Good
8,487 reviews

Entertainment

7.8

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

7.8

Food

7.2

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
7.8
Good
8,487 reviews
Delta
7.8
Good
8,487 reviews

Entertainment

7.8

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

7.8

Food

7.2

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
7.1
Good
11,844 reviews
Delta
7.8
Good
8,487 reviews

Entertainment

7.8

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

7.8

Food

7.2

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 12h 16m. Fly via United Airlines 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, Delta ($308), and American Airlines ($328) offers the cheapest pricing from Greensboro to Ontario. Delta is priced at 33% 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, March is the cheapest month in which you can book a flight from Greensboro to Ontario (average of $348). Flying from Greensboro to Ontario in December is currently the most expensive (average of $590). 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 July 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$308Average$428FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$328Average$544FlexibilityNo cancel feeOn-time71%

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