ONT - GSP

$185 Find Cheap Flights from Ontario to Greenville - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$369
Typical prices: $466-$697
Delta
Tue 11/6Sat 11/17
ONT - GSP • 1 stop
Cheapest one-way
$174
Typical prices: $223-$329
Multiple Airlines
Sat 1/27
ONT - GSP • 3 stops
Nonstop flights
Not available
There are currently no direct flights between Ontario and Greenville. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
April
Cheapest • 27% price drop
June
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Denver Intl (DEN)
Cheapest • Avg $518 (round-trip)
Atlanta Hartsfield-Jackson (ATL)
Shortest trip • 6h 57m (one-way)
Insights
Insights
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Greenville (ONT-GSP)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Greenville

Fri, Nov 6 - Tue, Nov 17
Delta Logo
12:16 pm - 10:51 pmONT  Ontario-GSP Greenville
7h 35m1 stop Atlanta Hartsfield-Jackson
Delta Logo
7:00 am - 11:03 amGSP  Greenville-ONT Ontario
7h 03m1 stop Atlanta Hartsfield-Jackson
$369Delta
Fri, Nov 6 - Thu, Nov 19
Delta Logo
12:16 pm - 10:51 pmONT  Ontario-GSP Greenville
7h 35m1 stop Atlanta Hartsfield-Jackson
Delta Logo
7:00 am - 11:03 amGSP  Greenville-ONT Ontario
7h 03m1 stop Atlanta Hartsfield-Jackson
$369Delta
Fri, Nov 13 - Mon, Nov 16
United Airlines Logo
6:37 pm - 10:02 amONT  Ontario-GSP Greenville
12h 25m2 stops San Francisco Washington, D.C. Dulles Intl
United Airlines Logo
5:12 pm - 9:40 pmGSP  Greenville-ONT Ontario
7h 28m1 stop Houston George Bush Intcntl
$374United Airlines
Fri, Nov 13 - Mon, Nov 16
United Airlines Logo
5:00 am - 3:03 pmONT  Ontario-GSP Greenville
7h 03m1 stop Denver Intl
United Airlines Logo
5:12 pm - 9:40 pmGSP  Greenville-ONT Ontario
7h 28m1 stop Houston George Bush Intcntl
$393United Airlines
Wed, Nov 18 - Mon, Nov 23
American Airlines Logo
12:42 pm - 9:58 pmONT  Ontario-GSP Greenville
6h 16m1 stop Dallas/Fort Worth
American Airlines Logo
2:09 pm - 6:52 pmGSP  Greenville-ONT Ontario
7h 43m1 stop Dallas/Fort Worth
$399American Airlines
Wed, Nov 18 - Mon, Nov 23
American Airlines Logo
10:30 am - 9:58 pmONT  Ontario-GSP Greenville
8h 28m1 stop Dallas/Fort Worth
American Airlines Logo
5:17 pm - 11:59 pmGSP  Greenville-ONT Ontario
9h 42m1 stop Dallas/Fort Worth
$399American Airlines
Thu, Dec 24 - Fri, Jan 1
Southwest Logo
8:40 am - 8:45 pmONT  Ontario-GSP Greenville
9h 05m2 stops Phoenix Sky Harbor Intl Nashville Intl
Southwest Logo
7:05 am - 2:40 pmGSP  Greenville-ONT Ontario
10h 35m2 stops Nashville Intl Denver Intl
$409Southwest
Fri, Dec 25 - Fri, Jan 1
Southwest Logo
5:55 am - 6:10 pmONT  Ontario-GSP Greenville
9h 15m2 stops Phoenix Sky Harbor Intl Nashville Intl
Southwest Logo
7:05 am - 2:40 pmGSP  Greenville-ONT Ontario
10h 35m2 stops Nashville Intl Denver Intl
$409Southwest
Fri, Nov 20 - Mon, Nov 23
Alaska Airlines Logo
6:00 am - 9:59 pmONT  Ontario-GSP Greenville
12h 59m2 stops Seattle/Tacoma Intl Chicago O'Hare Intl
Alaska Airlines Logo
11:37 am - 11:31 pmGSP  Greenville-ONT Ontario
14h 54m2 stops Chicago O'Hare Intl Seattle/Tacoma Intl
$813Alaska Airlines
Mon, Oct 26 - Fri, Oct 30
Alaska Airlines Logo
6:56 pm - 11:08 amONT  Ontario-GSP Greenville
13h 12m2 stops Seattle/Tacoma Intl Chicago O'Hare Intl
Alaska Airlines Logo
6:01 am - 6:00 pmGSP  Greenville-ONT Ontario
14h 59m2 stops Chicago O'Hare Intl Seattle/Tacoma Intl
$923Alaska Airlines
Booking Insights

Price, demand and travel trends for Ontario to Greenville flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

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

Round-trip flights from Ontario to Greenville typically range from $466 to $697. The lowest price found in the past 5 days was $369, on Delta.

What's the cheapest day of the week to fly from Ontario to Greenville?

Based on deals KAYAK users found in the last 12 months, Wednesday is the cheapest day of the week to fly from Ontario to Greenville. It’s 23% cheaper than the average day, while Monday is the most expensive, with prices 53% higher.

What’s the cheapest month to fly from Ontario to Greenville?

•April is the cheapest month to fly from Ontario to Greenville at $423 round-trip.
•September ($1,397) and December ($928) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 230% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Find deals

Key details for Ontario to Greenville flights

Low season

March

Cheapest flight

$174
Beat the crowds with an average 59% drop in travelers.
The most popular month to fly with an average 51% increase in travelers.
One-way flight from Ontario to Greenville

When to book flights from Ontario to Greenville

Are your dates flexible? Find out the best times to travel from Ontario to Greenville based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Ontario to Greenville flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Ontario to Greenville?

    Only Economy Class is available on flights from Ontario to Greenville.

  • How long is a flight from Ontario to Greenville?

    A nonstop flight from Ontario to Greenville takes 00m, covering 2,004 miles.

  • Do I need a passport to fly from Ontario to Greenville?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • How much should I expect to pay for a Ontario to Greenville flight?

    Round-trip flights from Ontario to Greenville range from $466 to $697, with an average of $577 over the past 12 months. Anything below $466 counts as a good deal.

  • Have flight prices from Ontario to Greenville changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $369 to $3,207. That means the highest observed fare was about 9x higher than the lowest one.

  • How are flight prices from Ontario to Greenville looking right now?

    One-way fares from Ontario to Greenville are currently lower than usual. Average one-way flight prices are about $193, which is 35% below the typical average for this route.

  • What car rental options are available at Greenville Airport (GSP)?

    Greenville Airport (GSP) hosts 5 major car rental companies, with daily rates starting from around $30 for economy cars. Top options include:

    • Budget
    • Alamo
    • Thrifty
    • Enterprise Rent-A-Car
    • Avis

  • Which airports can I use when flying from Ontario to Greenville?

    Flights from Ontario to Greenville usually depart from Ontario (ONT) and arrive at Greenville (GSP).

  • Which airports do connecting flights from Ontario to Greenville pass through?

    One-stop flights from Ontario to Greenville most commonly connect through:

    • Dallas/Fort Worth (DFW) - 42% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 38% of one-stop connections
    • Denver Intl (DEN) - 13% of one-stop connections
    • Nashville Intl (BNA) - 7% of one-stop connections

  • Can I save money by using flexible dates for flights from Ontario to Greenville?

    Yes. Flexible dates can save you up to 50% on flights from Ontario to Greenville. Wednesday is the cheapest departure day at $449 round-trip on average, while Monday is the most expensive at $887, a difference of $438.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from Ontario to Greenville?

    Flying via Atlanta Hartsfield-Jackson (ATL) gives the shortest average 1-stop total travel time at 6h 57m, compared with 7h 13m via Denver Intl (DEN) and 7h 24m via Nashville Intl (BNA).

  • What is the time difference between Ontario and Greenville?

    Greenville is 3 hours ahead of Ontario (Eastern Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

Your guide to booking Ontario to Greenville flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure and avoid flying on Monday. On this route, Wednesday flights average $449, about $438 less than Monday fares (49% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Ontario to Greenville trip for April. Fares historically average $423 round-trip in that month - typically $974 less than the most expensive month, which is September (based on the last 12 months).

More options for your flight from Ontario to Greenville

Complete your trip to Greenville with a hotel stay or car rental

Car rentals in Greenville
Hotels in Greenville
Vacations in Greenville