ONT - GSO

$202 Find Cheap Flights from Ontario to Greensboro - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Greensboro departing on 7/28. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$403
Typical prices: $412-$543
American Airlines
Sat 8/8Wed 8/12
ONT - GSO • 1 stop
Cheapest one-way
$202
Delta
Tue 7/28
ONT - GSO • 1 stop
Top airlines
Cheapest • from $403 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
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Nonstop flights
Not available
There are currently no direct flights between Ontario and Greensboro. You'll need at least 1 connection.
Insights
Insights
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Insights
Top layover airports
Cheapest • Avg $518 (round-trip)
Shortest trip • 6h 23m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
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Good to know
Good to know
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Greensboro (ONT-GSO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Greensboro that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Greensboro

Sat, Aug 8 - Wed, Aug 12
American Airlines Logo
12:33 pm - 10:16 pm
ONT
-
GSO
6h 43m
1 stop
American Airlines Logo
1:48 pm - 6:47 pm
GSO
-
ONT
7h 59m
1 stop
$403American Airlines
Wed, Oct 28 - Mon, Nov 2
American Airlines Logo
12:43 pm - 10:33 pm
ONT
-
GSO
6h 50m
1 stop
American Airlines Logo
5:32 pm - 11:57 pm
GSO
-
ONT
9h 25m
1 stop
$405American Airlines
Wed, Oct 28 - Mon, Nov 2
American Airlines Logo
12:43 pm - 10:33 pm
ONT
-
GSO
6h 50m
1 stop
American Airlines Logo
5:32 pm - 11:57 pm
GSO
-
ONT
9h 25m
1 stop
$421American Airlines
Sat, Aug 8 - Wed, Aug 12
American Airlines Logo
12:33 pm - 10:16 pm
ONT
-
GSO
6h 43m
1 stop
American Airlines Logo
7:44 am - 6:15 pm
GSO
-
ONT
13h 31m
2 stops
$449American Airlines
Sat, Sep 5 - Mon, Sep 7
American Airlines Logo
12:33 pm - 10:16 pm
ONT
-
GSO
6h 43m
1 stop
American Airlines Logo
6:19 am - 11:43 am
GSO
-
ONT
8h 24m
1 stop
$469American Airlines
Fri, Jul 24 - Tue, Jul 28
American Airlines Logo
7:00 am - 6:04 pm
ONT
-
GSO
8h 04m
1 stop
American Airlines Logo
7:19 pm - 11:59 pm
GSO
-
ONT
7h 40m
1 stop
$495American Airlines
Sat, Aug 8 - Wed, Aug 12
United Airlines Logo
6:10 am - 11:42 pm
ONT
-
GSO
14h 32m
2 stops
United Airlines Logo
10:40 am - 8:01 pm
GSO
-
ONT
12h 21m
2 stops
$513United Airlines
Tue, Aug 11 - Thu, Aug 13
American Airlines Logo
12:33 pm - 10:16 pm
ONT
-
GSO
6h 43m
1 stop
American Airlines Logo
6:19 am - 11:43 am
GSO
-
ONT
8h 24m
1 stop
$515American Airlines
Wed, Oct 28 - Mon, Nov 2
Delta Logo
5:52 pm - 11:19 am
ONT
-
GSO
14h 27m
2 stops
Delta Logo
4:17 pm - 10:01 pm
GSO
-
ONT
8h 44m
1 stop
$523Delta
Fri, Jul 31 - Mon, Aug 3
American Airlines Logo
7:00 am - 6:04 pm
ONT
-
GSO
8h 04m
1 stop
American Airlines Logo
6:39 pm - 10:34 pm
GSO
-
ONT
6h 55m
1 stop
$535American Airlines
Booking Insights

KAYAK's insights & trends for Ontario to Greensboro flights

Get data-powered insights and trends into flights from Ontario to Greensboro to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Ontario to Greensboro?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Ontario to Greensboro departing in August.

What is the cheapest month to fly from Ontario to Greensboro?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Greensboro, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ontario to Greensboro is January, where tickets cost $0 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is $1,057 and $1,028 respectively.

Good to know

Low seasonDecember
Cheapest flight$202
Best time to beat the crowds with an average 46% drop in price.
Most popular time to fly with an average 62% increase in price.
Flight from Ontario to Greensboro

When to book flights from Ontario to Greensboro

Are your dates flexible? Find out the best times to travel from Ontario to Greensboro based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Greensboro

  • What is the cheapest flight from Ontario to Greensboro?

    In the last 5 days, the lowest price for a flight from Ontario to Greensboro was $202 for a one-way ticket and $403 for a round-trip.

  • Do I need a passport to fly between Ontario and Greensboro?

    No, a passport isn't needed to fly from Ontario to Greensboro. However, local authorities might ask for an official ID.

  • Which aircraft models fly most regularly from Ontario to Greensboro?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Greensboro?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Ontario and Greensboro, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Ontario to Greensboro, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Ontario to Greensboro are Delta and United Airlines. With an average price for the route of $543 and an overall rating of 7.8, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $1,097 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Ontario to Greensboro?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Greensboro.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Greensboro?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Greensboro from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Greensboro?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Greensboro with an airline and back to Ontario with another airline. Booking your flights between Ontario and GSO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Greensboro?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Greensboro from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Ontario to Greensboro

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Greensboro. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Greensboro? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
DeltaOverall score based on 8453 reviews
8.1Boarding
8.5Crew
7.8Entertainment
7.2Food
7.8Comfort
Airline reviews

I thought the service was very nice and pleasant. There were no hiccups and no issues so overall a good experience.

8.0 ExcellentAnonymous, Jun 2026
BOS - RDU
Read more Delta reviews

I thought the service was very nice and pleasant. There were no hiccups and no issues so overall a good experience.

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

737-800 in first class was pretty dumpy. Seat had an uncomfortable angle, storage under the seat was blocked so even my very modest backpack didn't fit, power outlet was flaky. Weird tiny seat pockets that couldn't hold a gallon ziploc bag, emesis bag missing, etc. etc. No in-flight service due to turbulence. Crew was excellent, boarding was smooth despite a full flight.

It was reported to the passengers that Delta failed to schedule the crew properly. This error caused the pilot to show up about 30 minutes late. All in all Delta's inability to take care of this basic function resulted in about an hour delay.

Quick flight on older aircraft. Sat in last row…really noisy. No video available

The flight was overbooked and the staff at the gate started calling for volunteers to drop out and offering incentives. That delayed the flight

There was no wifi even after my husband paid for wifi it wasn’t working. The plane looked and felt old.

Update the cabin with tv screens or at least music sources.

I was exhausted from a long day. The flight was smooth. The first flight during my 3 week travel that took off on time.

Boarded early; and arrived home 40 mins early. After a long flight, it’s nice to be back home early. These flights have no amenities; no snacks. So need to bring your own

Seat pitch is horrible especially on the 15 hour flight. Gate crew at SFO was Outstanding. The flight crew was also great.

As I wrote earlier, poor planning and/or communication. At least twice, we were told that we would be boarding in less than ten minutes, only to have the flight again delayed at least another hour.

Great flight. Boarded efficiently. Arrived early at CLT. There was no in flight entertainment on this aircraft. Great crew.

It was a red-eye, but the flight felt surprisingly quick. The seats were very comfortable, and that made resting much easier. I also want to thank the gentleman seated next to me, who graciously moved so my mom could sit beside me. We slept almost the entire way. The cabin crew was respectful in not disturbing us, while also being courteous and professional throughout. Thank you, United.

Terrible. No customer service, no food, no drinks on a 6 hour premier economy booking.

left on time, reasonable boarding process arrived early luggage came out quickly

Compared with other carriers business class for an overnight was not worth the extra expense.

EVen warmer in the plane it think it was 24+ degrees

I was not clear if food was offered or not.

Take-off delayed an hour because of a missing flight officer, so,arrived in Charlotte lates causing many passengers to miss connections. Otherwise a very good flight, safe and comfortable, with an excellent professional crew.

Ontario airport boarding was very easy to park and access, is clean and TSA took 10 minutes total. Check-in was a breeze and cruise was very nice.

Good flight, seated and had a water within 5 minutes. Crew was hospitable.

The flight was on time and arrived early. The crew were friendly and helpful.

The flight was flawless and we even arrived between 20 and 25 minutes early!

Mostly good. Flight was crowded but Airline personnel were very friendly & accommodating. It would be good to have savory snacks rather than just sweet Biscoff cookies.

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

VERY disappointed at the agent checking in my luggage. I know that the weight limit is 23 kg, a little over 50 pounds (50.71 pounds). Yet the agent kept repeating "50 pounds". So I said, the limit is 23 kg, and she had the audacity to say 'no, it is 22 kg!" Imagine my surprise. Was she ignorant or was she poorly trained? Not sure. The boarding process was pretty good. The speakers were loud enough so I still could hear them despite inconsiderate passengers continuing to speak while the announcements were going on. During the flight, the teenage girl sitting behind me kept pressing her feet to the back of my chair. I turned around several times, yet she did not get the hint. I did not make a fuss since I sense I had a bad streak that night with AA, so I just did the best I can to lean forward and not let that bother me.

It was wonderful upgrading to first. Plane was so cold thou. Crew was great. Wish there was a food option in first for such a long flight. Doesnt matter the time of day. Chintzy.

Everything you need to know for your flight from Ontario to Greensboro

Information on your arrival and departure airports