HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
GSO — ONT
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Greensboro to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 June 12, 2025.

Round-trip from

$309
(Delta)

One-way from

$189
(Delta)

Popular in

February

Cheapest in

June

Average price

$336
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. 19% potential increase in price ($117 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 11% potential price decrease ($48 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

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 June 12, 2025.

This Delta deal was found by Cheapflights users on 6/12. 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 9/162:15 pmGSO - ONT
1 stop8h 27mDelta
Tue 9/307:00 amONT - GSO
1 stop7h 59mDelta
Deal found 6/12$309
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/225:28 pmGSO - ONT
1 stop8h 02mUnited Airlines
Tue 10/281:00 pmONT - GSO
1 stop6h 47mUnited Airlines
Deal found 6/11$409
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/247:05 amGSO - ONT
2 stops14h 23mAlaska Airlines
Mon 10/67:25 pmONT - GSO
2 stops13h 19mAlaska Airlines
Deal found 6/10$419
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Sat 7/264:12 pmGSO - ONT
1 stop8h 26mAmerican Airlines
Fri 8/112:59 amONT - GSO
1 stop7h 54mAmerican Airlines
Deal found 6/11$568

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 June 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

Tue 9/16

6:50 am-11:24 am

1 stop7h 34m

Ontario

Tue 9/30

10:59 pm-11:22 am

1 stop9h 23m

$309

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Sun 8/17

12:21 pm-6:17 pm

2 stops8h 56m

Ontario

Sat 8/23

11:59 pm-12:24 pm

2 stops9h 25m

$384

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Wed 10/22

5:28 pm-10:30 pm

1 stop8h 02m

Ontario

Tue 10/28

1:00 pm-10:47 pm

1 stop6h 47m

$409

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Wed 9/24

7:05 am-6:28 pm

2 stops14h 23m

Ontario

Mon 10/6

7:25 pm-11:44 am

2 stops13h 19m

$419

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Mon 8/18

4:52 pm-10:20 pm

1 stop8h 28m

$189

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Mon 8/18

10:34 am-10:06 pm

2 stops14h 32m

$244

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Sat 7/12

5:30 am-12:00 pm

2 stops9h 30m

$285

GreensboroOntario

GSO - ONT

GSOONT

Greensboro/H. Point

Sun 10/12

7:35 am-6:30 pm

2 stops13h 55m

$398

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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 June 12, 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.

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 June 12, 2025.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

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

    According to our current data, Delta ($309), American Airlines ($384), and United Airlines ($409) offers the cheapest pricing from Greensboro to Ontario. Delta is priced at 34% 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 $189 on Delta. Other airlines that offer cheap prices include United Airlines from $244 and American Airlines from $285 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, 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Greensboro to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Raleigh to Las Vegas flights
Charlotte to Las Vegas flights
Raleigh to Los Angeles flights
Raleigh to San Francisco flights
Charlotte to San Francisco flights
Charlotte to Los Angeles flights
Charlotte to Ontario flights
Charlotte to San Diego flights
Norfolk to Las Vegas flights
Greensboro to Las Vegas flights
Raleigh to San Diego flights
Charlotte to Burbank flights
Norfolk to Los Angeles flights
Charlotte to Santa Ana flights
Raleigh to Ontario flights
Norfolk to San Francisco flights
Charlotte to Sacramento flights
Myrtle Beach to Las Vegas flights
Greensboro to Los Angeles flights
Raleigh to Santa Ana flights
Raleigh to San Jose flights
Raleigh to Sacramento flights
Knoxville to Los Angeles flights
Knoxville to San Diego flights
Knoxville to Las Vegas flights
Greensboro to San Francisco flights
Jacksonville to San Diego flights
Norfolk to San Diego flights
Wilmington to Las Vegas flights
Charlotte to Oakland flights
Raleigh to Oakland flights
Asheville to San Francisco flights
Norfolk to Ontario flights
Charlotte to San Jose flights
Raleigh to Burbank flights
Asheville to Las Vegas flights
Charlotte to Reno flights
Wilmington to San Diego flights
Raleigh to Reno flights
Knoxville to San Francisco flights
Asheville to Los Angeles flights
Charlotte to Fresno flights
Knoxville to Ontario flights
Raleigh to Palm Springs flights
Myrtle Beach to San Diego flights
Charlotte to Santa Barbara flights
Knoxville to Santa Ana flights
Knoxville to Sacramento flights
Raleigh to Fresno flights

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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$268Average$451FlexibilityNo cancel feeOn-time71%
DeltaCheapest$296Average$434FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.