ONT - GSP

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

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$369
Typical prices: $447-$689
Southwest
Sun 12/2Fri 12/7
ONT - GSP • 1 stop
Cheapest one-way
$185
Typical prices: $204-$329
Southwest
Wed 10/24
ONT - GSP • 1 stop
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
October
Cheapest • 29% price drop
June
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Baltimore/Washington (BWI)
Cheapest • Avg $319 (round-trip)
Atlanta Hartsfield-Jackson (ATL)
Shortest trip • 6h 57m (one-way)
Insights
Insights
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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

Wed, Dec 2 - Mon, Dec 7
Southwest Logo
11:25 am - 8:45 pmONT  Ontario-GSP Greenville
6h 20m1 stop Nashville Intl
Southwest Logo
11:20 am - 3:10 pmGSP  Greenville-ONT Ontario
6h 50m1 stop Nashville Intl
$369Southwest
Mon, Dec 7 - Tue, Dec 8
Delta Logo
12:20 pm - 11:47 pmONT  Ontario-GSP Greenville
8h 27m1 stop Atlanta Hartsfield-Jackson
Delta Logo
5:40 am - 11:08 amGSP  Greenville-ONT Ontario
8h 28m1 stop Atlanta Hartsfield-Jackson
$369Delta
Wed, Dec 2 - Mon, Dec 7
Southwest Logo
6:50 am - 6:10 pmONT  Ontario-GSP Greenville
8h 20m2 stops Denver Intl Nashville Intl
Southwest Logo
11:20 am - 3:10 pmGSP  Greenville-ONT Ontario
6h 50m1 stop Nashville Intl
$374Southwest
Fri, Oct 9 - Sat, Oct 24
Delta Logo
11:15 pm - 10:01 amONT  Ontario-GSP Greenville
7h 46m1 stop Atlanta Hartsfield-Jackson
Delta Logo
5:40 am - 11:06 amGSP  Greenville-ONT Ontario
8h 26m1 stop Atlanta Hartsfield-Jackson
$379Delta
Sat, Oct 31 - Sat, Nov 7
American Airlines Logo
12:43 pm - 10:05 pmONT  Ontario-GSP Greenville
6h 22m1 stop Dallas/Fort Worth
American Airlines Logo
7:51 am - 1:31 pmGSP  Greenville-ONT Ontario
8h 40m1 stop Dallas/Fort Worth
$433American Airlines
Tue, Sep 22 - Tue, Sep 29
American Airlines Logo
12:37 pm - 10:11 pmONT  Ontario-GSP Greenville
6h 34m1 stop Dallas/Fort Worth
American Airlines Logo
8:01 am - 1:25 pmGSP  Greenville-ONT Ontario
8h 24m1 stop Dallas/Fort Worth
$433American Airlines
Tue, Sep 22 - Tue, Sep 29
United Airlines Logo
6:00 am - 9:18 pmONT  Ontario-GSP Greenville
12h 18m2 stops Houston George Bush Intcntl Chicago O'Hare Intl
United Airlines Logo
4:25 pm - 8:58 pmGSP  Greenville-ONT Ontario
7h 33m1 stop Denver Intl
$438United Airlines
Sat, Oct 31 - Fri, Nov 6
United Airlines Logo
6:59 am - 4:56 pmONT  Ontario-GSP Greenville
6h 57m1 stop Chicago O'Hare Intl
United Airlines Logo
2:51 pm - 10:48 pmGSP  Greenville-ONT Ontario
10h 57m2 stops Washington, D.C. Dulles Intl San Francisco
$438United Airlines
Mon, Oct 5 - Thu, Oct 15
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
$667Alaska Airlines
Mon, Oct 5 - Sat, Oct 17
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
$667Alaska 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 from Ontario to Greenville with more confidence.

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

Round-trip flights from Ontario to Greenville start at $369. Prices are below average for this route right now, with typical round-trip fares ranging from $447 to $689. The lowest price found in the past 5 days was $369 on Southwest.

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

Saturday is the cheapest day of the week to fly from Ontario to Greenville, it is 23% cheaper than the average day. Friday is the most expensive day with flight prices 22% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

  • October is the cheapest month to fly from Ontario to Greenville at $407 round-trip.
  • December ($928) and February ($886) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 128% 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

$185
Best time to beat the crowds with an average 24% drop in price.
Most popular time to fly and prices are also 17% lower on average.
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 route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • 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).

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

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

  • 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) - 45% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 36% of one-stop connections
    • Denver Intl (DEN) - 9% of one-stop connections
    • Nashville Intl (BNA) - 6% of one-stop connections

    Dallas/Fort Worth (DFW) handles the largest share of one-stop connections on this route.

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

    On the Ontario to Greenville route, being flexible with your departure day can save you up to 37%. Saturday is the cheapest day at $442 round-trip on average, while Friday is the most expensive at $697: a $255 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • How long is a flight from Ontario to Greenville?

    A nonstop flight from Ontario to Greenville takes 0h 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.

  • 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 $2,544. That means the highest observed fare was about 7x 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 $191, which is 31% below the typical average for this route.

  • 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 14m 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.

  • 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

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

    Round-trip flights from Ontario to Greenville range from $447 to $689, with an average of $570 over the past 12 months. Anything below $447 counts as a good deal.

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 can be flexible, aim for a Saturday departure instead of Friday. On this route, Saturday flights average $442 - about $255 less than Friday (37% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Ontario to Greenville trip for October. Fares historically average $407 round-trip in that month - typically $521 less than the most expensive month, which is December (based on the last 12 months).

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

Information on your arrival and departure airports

Ontario (ONT)
Greenville (GSP)