ONT - GRB

$287 Find Cheap Flights from Ontario to Green Bay - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$389
Typical prices: $383-$794
American Airlines
Mon 1/8Wed 1/10
ONT - GRB • 2 stops
Cheapest one-way
$287
Typical prices: $320-$629
Delta
Sun 11/25
ONT - GRB • 1 stop
When to travel
August
Cheapest • 28% price drop
May
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Chicago O'Hare Intl (ORD)
Cheapest • Avg $526 (round-trip)
Atlanta Hartsfield-Jackson (ATL)
Shortest trip • 8h 14m (one-way)
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Cheap Flights from Ontario to Green Bay (ONT-GRB)

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

Recent round-trip flight deals from Ontario to Green Bay

Fri, Jan 8 - Sun, Jan 10
American Airlines Logo
6:20 am - 7:47 pmONT  Ontario-GRB Green Bay Austin-Straubel
11h 27m2 stops Phoenix Sky Harbor Intl Chicago O'Hare Intl
American Airlines Logo
9:45 am - 9:59 pmGRB  Green Bay Austin-Straubel-ONT Ontario
14h 14m2 stops Chicago O'Hare Intl Phoenix Sky Harbor Intl
$389American Airlines
Tue, Sep 29 - Sat, Oct 3
United Airlines Logo
7:00 am - 4:54 pmONT  Ontario-GRB Green Bay Austin-Straubel
7h 54m1 stop Chicago O'Hare Intl
United Airlines Logo
3:42 pm - 10:49 pmGRB  Green Bay Austin-Straubel-ONT Ontario
9h 07m1 stop Chicago O'Hare Intl
$449United Airlines
Tue, Sep 29 - Sat, Oct 3
United Airlines Logo
7:00 am - 4:54 pmONT  Ontario-GRB Green Bay Austin-Straubel
7h 54m1 stop Chicago O'Hare Intl
United Airlines Logo
5:00 am - 3:22 pmGRB  Green Bay Austin-Straubel-ONT Ontario
12h 22m2 stops Chicago O'Hare Intl San Francisco
$454United Airlines
Tue, Sep 29 - Sat, Oct 3
Delta Logo
6:00 pm - 10:22 amONT  Ontario-GRB Green Bay Austin-Straubel
14h 22m2 stops Seattle/Tacoma Intl Detroit Metropolitan Wayne County
Delta Logo
1:10 pm - 10:04 pmGRB  Green Bay Austin-Straubel-ONT Ontario
10h 54m2 stops Atlanta Hartsfield-Jackson Salt Lake City
$459Delta
Tue, Oct 13 - Tue, Oct 20
American Airlines Logo
1:05 pm - 12:12 amONT  Ontario-GRB Green Bay Austin-Straubel
9h 07m2 stops Phoenix Sky Harbor Intl Chicago O'Hare Intl
American Airlines Logo
8:04 pm - 9:10 amGRB  Green Bay Austin-Straubel-ONT Ontario
15h 06m2 stops Chicago O'Hare Intl Phoenix Sky Harbor Intl
$488American Airlines
Wed, Nov 4 - Tue, Nov 10
United Airlines Logo
6:00 am - 7:10 pmONT  Ontario-GRB Green Bay Austin-Straubel
11h 10m2 stops Houston George Bush Intcntl Chicago O'Hare Intl
United Airlines Logo
10:37 am - 8:15 pmGRB  Green Bay Austin-Straubel-ONT Ontario
11h 38m2 stops Chicago O'Hare Intl San Francisco
$489United Airlines
Sat, Oct 24 - Sat, Oct 31
Delta Logo
12:16 pm - 10:17 pmONT  Ontario-GRB Green Bay Austin-Straubel
8h 01m1 stop Atlanta Hartsfield-Jackson
Delta Logo
5:30 am - 11:06 amGRB  Green Bay Austin-Straubel-ONT Ontario
7h 36m1 stop Atlanta Hartsfield-Jackson
$508Delta
Sat, Dec 12 - Mon, Dec 14
American Airlines Logo
9:29 am - 12:06 amONT  Ontario-GRB Green Bay Austin-Straubel
12h 37m2 stops Phoenix Sky Harbor Intl Chicago O'Hare Intl
American Airlines Logo
8:29 pm - 8:39 amGRB  Green Bay Austin-Straubel-ONT Ontario
14h 10m2 stops Chicago O'Hare Intl Phoenix Sky Harbor Intl
$515American Airlines
Thu, Nov 12 - Tue, Nov 17
American Airlines Logo
6:05 am - 7:59 pmONT  Ontario-GRB Green Bay Austin-Straubel
11h 54m2 stops Phoenix Sky Harbor Intl Chicago O'Hare Intl
American Airlines Logo
10:01 am - 6:10 pmGRB  Green Bay Austin-Straubel-ONT Ontario
10h 09m2 stops Chicago O'Hare Intl Phoenix Sky Harbor Intl
$516American Airlines
Wed, Dec 23 - Wed, Jan 6
Delta Logo
11:10 am - 11:04 pmONT  Ontario-GRB Green Bay Austin-Straubel
9h 54m1 stop Atlanta Hartsfield-Jackson
Delta Logo
4:00 pm - 10:48 pmGRB  Green Bay Austin-Straubel-ONT Ontario
8h 48m2 stops Minneapolis St Paul Salt Lake City
$521Delta
Booking Insights

Price, demand and travel trends for Ontario to Green Bay flights

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

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

Round-trip flights from Ontario to Green Bay start at $389. Prices are typical for this route right now, with typical round-trip fares ranging from $383 to $794. The lowest price found in the past 5 days was $389 on American Airlines.

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Key details for Ontario to Green Bay flights

Low season

August

Cheapest flight

$287
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly and prices are also 25% lower on average.
Flight from Ontario to Green Bay

When to book flights from Ontario to Green Bay

Are your dates flexible? Find out the best times to travel from Ontario to Green Bay 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 Green Bay 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 Green Bay?

    Flights from Ontario to Green Bay usually depart from Ontario (ONT) and arrive at Green Bay Austin-Straubel (GRB).

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

    Only Economy Class is available on flights from Ontario to Green Bay.

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

    Connecting flights from Ontario to Green Bay most commonly pass through:

    • Chicago O'Hare Intl (ORD) - 85% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 15% of one-stop connections
    Together, these airports account for 100% of one-stop bookings on this route.

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

    Yes. Being flexible with your travel dates can save you up to 59% on the Ontario to Green Bay route. Wednesday is the cheapest departure day at $364 round-trip on average, while Friday is the most expensive at $867, a difference of $503. 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 long is a flight from Ontario to Green Bay?

    There are currently no nonstop flights available from Ontario to Green Bay. Flights with 1 layover take between 7h 18m and 8h 14m in total, depending on the connection.

  • Do I need a passport to fly from Ontario to Green Bay?

    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 Green Bay 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 $488 to $2,108. That means the highest observed fare was about 4x higher than the lowest one.

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

    One-way fares from Ontario to Green Bay are currently lower than usual. Average one-way flight prices are about $314, which is 24% below the typical average for this route.

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

    Flying via Chicago O'Hare Intl (ORD) gives the shortest average 1-stop total travel time at 7h 18m, compared with 8h 14m via Atlanta Hartsfield-Jackson (ATL).

  • What is the time difference between Ontario and Green Bay?

    Green Bay is 2 hours ahead of Ontario (Central Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Green Bay Austin-Straubel Airport (GRB)?

    Green Bay Austin-Straubel Airport (GRB) hosts 5 major car rental companies, with daily rates starting from around $31 for economy cars. Top options include:
    • Alamo
    • Avis
    • Enterprise Rent-A-Car
    • Budget
    • Hertz

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

    Round-trip flights from Ontario to Green Bay range from $383 to $794, with an average of $543 over the past 12 months. Anything below $383 counts as a good deal.

Your guide to booking Ontario to Green Bay 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 Wednesday departure instead of Friday. On this route, Wednesday flights average $364 - about $503 less than Friday (58% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Ontario to Green Bay trip for August. Fares historically average $393 round-trip in that month - typically $482 less than the most expensive month, which is December (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Green Bay Austin-Straubel Airport.
    - Oneida Casino Hotel
    - Wingate by Wyndham Green Bay/Airport
    - Extended Stay Airport

More options for your flight from Ontario to Green Bay

Complete your trip to Green Bay with a hotel stay or car rental

Car rentals in Green Bay
Hotels in Green Bay
Vacations in Green Bay