Which airports can I use when flying from Green Bay to Ontario?

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

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

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

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

Connecting flights from Green Bay to Ontario most commonly pass through: • Atlanta Hartsfield-Jackson (ATL) - 86% of one-stop connections • Chicago O'Hare Intl (ORD) - 14% of one-stop connections

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

Yes. Flexible dates can save you up to 47% on flights from Green Bay to Ontario. Tuesday is the cheapest departure day at $396 round-trip on average, while Monday is the most expensive at $744, a difference of $348. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

What popular places can I visit in Ontario?

Some of the most popular sights in Ontario are Ontario Convention Center and Cucamonga-Guasti Regional Park. These are among the most viewed places in Ontario on KAYAK.

How long is a flight from Green Bay to Ontario?

There are currently no nonstop flights available from Green Bay to Ontario. Flights with 1 layover take between 6h 30m and 8h 08m in total, depending on the connection.

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

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 Green Bay to Ontario 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 $409 to $1,777. That means the highest observed fare was about 4x higher than the lowest one.

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

One-way fares from Green Bay to Ontario are currently higher than usual. Average one-way flight prices are about $1,018, which is 200% above the typical average for this route.

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

Flying via Chicago O'Hare Intl (ORD) gives the shortest average 1-stop total travel time at 6h 30m, compared with 8h 08m via Atlanta Hartsfield-Jackson (ATL).

What is the time difference between Green Bay and Ontario?

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

What car rental options are available at Ontario Airport (ONT)?

Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates averaging $60 for economy cars. Top options include: • Fox • Europcar • Thrifty • Alamo • Dollar

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

Round-trip flights from Green Bay to Ontario range from $403 to $593, with an average of $503 over the past 12 months. Anything below $403 counts as a good deal.

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

Round-trip flights from Green Bay to Ontario typically range from $403 to $593. The lowest price found in the past 5 days was $409, on Delta.

Which airline is the cheapest to fly from Green Bay to Ontario?

Delta ($409) and United Airlines ($414) are the cheapest airlines to fly round-trip from Green Bay to Ontario according to KAYAK data over the last 5 days.

What’s the most popular layover airport when flying from Green Bay to Ontario?

Atlanta Hartsfield-Jackson (ATL) is the most popular layover for the Green Bay to Ontario route. Over the past 3 months, 86% of KAYAK users found 1-stop round-trips connecting via ATL.

What is the cheapest layover airport when flying from Green Bay to Ontario?

Flights via Chicago O'Hare Intl (ORD) offer the most affordable fares, with an average round-trip price of $536. Based on KAYAK data over the past 3 months.

When flying from Green Bay to Ontario which airport offers the shortest layover?

Chicago O'Hare Intl (ORD) had the shortest average connection time for Green Bay to Ontario layovers at 3h 49m over the past 3 months.

$377 CHEAP FLIGHTS from Green Bay to Ontario (GRB - ONT)

Save 26% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Cheapest round-trip

$409

Typical prices: $403-$593

Delta

Mon 4/30Fri 5/4

GRB - ONT • 1 stop

Cheapest one-way

$377

Typical prices: $292-$388

United Airlines

Sun 12/16

GRB - ONT • 1 stop

When to travel

November

Cheapest • 49% price drop

March

Most popular

Good to know

Top layover airports

Chicago O'Hare Intl (ORD)

Cheapest • Avg $536 (round-trip)

Atlanta Hartsfield-Jackson (ATL)

Shortest trip • 8h 08m (one-way)

Insights

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We hope you love your trip to Ontario!

Flight Deals

Cheap Flights from Green Bay to Ontario (GRB-ONT)

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

Round-trip

One-way

Last minute

Recent round-trip flight deals from Green Bay to Ontario

Fri, Apr 30 - Tue, May 4

5:30 am - 11:27 amGRB Green Bay Austin-Straubel-ONT Ontario

7h 57m1 stop Atlanta Hartsfield-Jackson

12:00 pm - 10:45 pmONT Ontario-GRB Green Bay Austin-Straubel

8h 45m1 stop Atlanta Hartsfield-Jackson

$409Delta

Fri, Apr 30 - Sun, May 9

5:30 am - 11:27 amGRB Green Bay Austin-Straubel-ONT Ontario

7h 57m1 stop Atlanta Hartsfield-Jackson

12:00 pm - 10:45 pmONT Ontario-GRB Green Bay Austin-Straubel

8h 45m1 stop Atlanta Hartsfield-Jackson

$409Delta

Fri, Apr 30 - Fri, May 7

5:30 am - 11:27 amGRB Green Bay Austin-Straubel-ONT Ontario

7h 57m1 stop Atlanta Hartsfield-Jackson

12:00 pm - 10:45 pmONT Ontario-GRB Green Bay Austin-Straubel

8h 45m1 stop Atlanta Hartsfield-Jackson

$409Delta

Fri, Apr 30 - Wed, May 5

5:30 am - 11:27 amGRB Green Bay Austin-Straubel-ONT Ontario

7h 57m1 stop Atlanta Hartsfield-Jackson

12:00 pm - 10:45 pmONT Ontario-GRB Green Bay Austin-Straubel

8h 45m1 stop Atlanta Hartsfield-Jackson

$409Delta

Tue, May 4 - Sun, May 9

5:30 am - 11:27 amGRB Green Bay Austin-Straubel-ONT Ontario

7h 57m1 stop Atlanta Hartsfield-Jackson

12:00 pm - 10:45 pmONT Ontario-GRB Green Bay Austin-Straubel

8h 45m1 stop Atlanta Hartsfield-Jackson

$409Delta

Fri, Apr 2 - Sat, Apr 10

1:11 pm - 10:57 pmGRB Green Bay Austin-Straubel-ONT Ontario

11h 46m2 stops Chicago O'Hare Intl San Francisco

7:00 am - 4:59 pmONT Ontario-GRB Green Bay Austin-Straubel

7h 59m1 stop Chicago O'Hare Intl

$414United Airlines

Wed, Apr 28 - Fri, May 7

5:00 pm - 11:48 pmGRB Green Bay Austin-Straubel-ONT Ontario

8h 48m2 stops Minneapolis St Paul Salt Lake City

12:00 pm - 10:45 pmONT Ontario-GRB Green Bay Austin-Straubel

8h 45m1 stop Atlanta Hartsfield-Jackson

$414Delta

Mon, May 3 - Sun, May 9

5:00 pm - 11:48 pmGRB Green Bay Austin-Straubel-ONT Ontario

8h 48m2 stops Minneapolis St Paul Salt Lake City

12:00 pm - 10:45 pmONT Ontario-GRB Green Bay Austin-Straubel

8h 45m1 stop Atlanta Hartsfield-Jackson

$414Delta

Wed, Apr 28 - Sun, May 9

5:00 pm - 11:48 pmGRB Green Bay Austin-Straubel-ONT Ontario

8h 48m2 stops Minneapolis St Paul Salt Lake City

12:00 pm - 10:45 pmONT Ontario-GRB Green Bay Austin-Straubel

8h 45m1 stop Atlanta Hartsfield-Jackson

$414Delta

Fri, Dec 4 - Mon, Dec 7

6:15 am - 3:35 pmGRB Green Bay Austin-Straubel-ONT Ontario

11h 20m2 stops Chicago O'Hare Intl San Francisco

11:20 am - 10:59 pmONT Ontario-GRB Green Bay Austin-Straubel

9h 39m2 stops San Francisco Chicago O'Hare Intl

$459United Airlines

Recent last minute flight deals from Green Bay to Ontario

Wed, Nov 18 - Wed, Nov 25

1:37 pm - 6:47 pmGRB Green Bay Austin-Straubel-ONT Ontario

7h 10m1 stop Chicago O'Hare Intl

7:00 am - 4:52 pmONT Ontario-GRB Green Bay Austin-Straubel

7h 52m1 stop Chicago O'Hare Intl

$634United Airlines

Wed, Nov 18 - Wed, Nov 25

1:37 pm - 6:47 pmGRB Green Bay Austin-Straubel-ONT Ontario

7h 10m1 stop Chicago O'Hare Intl

6:00 am - 4:52 pmONT Ontario-GRB Green Bay Austin-Straubel

8h 52m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

$639United Airlines

Wed, Nov 18 - Tue, Nov 24

1:37 pm - 6:47 pmGRB Green Bay Austin-Straubel-ONT Ontario

7h 10m1 stop Chicago O'Hare Intl

9:25 am - 10:38 pmONT Ontario-GRB Green Bay Austin-Straubel

11h 13m2 stops San Francisco Chicago O'Hare Intl

$639United Airlines

Tue, Nov 17 - Wed, Nov 25

1:37 pm - 8:51 pmGRB Green Bay Austin-Straubel-ONT Ontario

9h 14m2 stops Chicago O'Hare Intl Denver Intl

7:00 am - 4:52 pmONT Ontario-GRB Green Bay Austin-Straubel

7h 52m1 stop Chicago O'Hare Intl

$639United Airlines

Sat, Nov 21 - Wed, Nov 25

8:00 am - 8:15 pmGRB Green Bay Austin-Straubel-ONT Ontario

14h 15m2 stops Chicago O'Hare Intl San Francisco

7:00 am - 4:52 pmONT Ontario-GRB Green Bay Austin-Straubel

7h 52m1 stop Chicago O'Hare Intl

$639United Airlines

Wed, Nov 18 - Tue, Nov 24

6:15 am - 12:33 pmGRB Green Bay Austin-Straubel-ONT Ontario

8h 18m2 stops Chicago O'Hare Intl Denver Intl

9:25 am - 10:38 pmONT Ontario-GRB Green Bay Austin-Straubel

11h 13m2 stops San Francisco Chicago O'Hare Intl

$644United Airlines

Sat, Nov 21 - Tue, Nov 24

10:37 am - 8:15 pmGRB Green Bay Austin-Straubel-ONT Ontario

11h 38m2 stops Chicago O'Hare Intl San Francisco

9:25 am - 10:38 pmONT Ontario-GRB Green Bay Austin-Straubel

11h 13m2 stops San Francisco Chicago O'Hare Intl

$644United Airlines

Sat, Nov 21 - Wed, Nov 25

10:37 am - 8:15 pmGRB Green Bay Austin-Straubel-ONT Ontario

11h 38m2 stops Chicago O'Hare Intl San Francisco

6:00 am - 4:52 pmONT Ontario-GRB Green Bay Austin-Straubel

8h 52m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

$644United Airlines

Tue, Nov 17 - Wed, Nov 25

6:15 am - 12:33 pmGRB Green Bay Austin-Straubel-ONT Ontario

8h 18m2 stops Chicago O'Hare Intl Denver Intl

9:25 am - 10:38 pmONT Ontario-GRB Green Bay Austin-Straubel

11h 13m2 stops San Francisco Chicago O'Hare Intl

$644United Airlines

Tue, Nov 17 - Tue, Nov 24

1:37 pm - 8:51 pmGRB Green Bay Austin-Straubel-ONT Ontario

9h 14m2 stops Chicago O'Hare Intl Denver Intl

9:25 am - 10:38 pmONT Ontario-GRB Green Bay Austin-Straubel

11h 13m2 stops San Francisco Chicago O'Hare Intl

$644United Airlines

Booking Insights

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

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

Prices

Airlines

Layovers

How much is a round-trip flight from Green Bay to Ontario? This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Green Bay to Ontario departing in april.

Find deals

Low season	December
High season	March
Cheapest flight	$377

Beat the crowds with an average 83% drop in travelers.

The most popular month to fly with an average 67% increase in travelers.

One-way flight from Green Bay to Ontario

When to book flights from Green Bay to Ontario

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

What cabin classes can I book on flights from Green Bay to Ontario?
Only Economy Class is available on flights from Green Bay to Ontario.
How long is a flight from Green Bay to Ontario?
There are currently no nonstop flights available from Green Bay to Ontario. Flights with 1 layover take between 6h 30m and 8h 08m in total, depending on the connection.
Do I need a passport to fly from Green Bay to Ontario?
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 Green Bay to Ontario flight?
Round-trip flights from Green Bay to Ontario range from $403 to $593, with an average of $503 over the past 12 months. Anything below $403 counts as a good deal.
Have flight prices from Green Bay to Ontario 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 $409 to $1,777. That means the highest observed fare was about 4x higher than the lowest one.
How are flight prices from Green Bay to Ontario looking right now?
One-way fares from Green Bay to Ontario are currently higher than usual. Average one-way flight prices are about $1,018, which is 200% above the typical average for this route.
What car rental options are available at Ontario Airport (ONT)?
Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates averaging $60 for economy cars. Top options include:

• Fox
• Europcar
• Thrifty
• Alamo
• Dollar
Which airports can I use when flying from Green Bay to Ontario?
Flights from Green Bay to Ontario usually depart from Green Bay Austin-Straubel (GRB) and arrive at Ontario (ONT).
Which airports do connecting flights from Green Bay to Ontario pass through?
Connecting flights from Green Bay to Ontario most commonly pass through:

• Atlanta Hartsfield-Jackson (ATL) - 86% of one-stop connections
• Chicago O'Hare Intl (ORD) - 14% of one-stop connections
Can I save money by using flexible dates for flights from Green Bay to Ontario?
Yes. Flexible dates can save you up to 47% on flights from Green Bay to Ontario. Tuesday is the cheapest departure day at $396 round-trip on average, while Monday is the most expensive at $744, a difference of $348.

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 Green Bay to Ontario?
Flying via Chicago O'Hare Intl (ORD) gives the shortest average 1-stop total travel time at 6h 30m, compared with 8h 08m via Atlanta Hartsfield-Jackson (ATL).
What is the time difference between Green Bay and Ontario?
Ontario is 2 hours behind Green Bay (Pacific Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.
What popular places can I visit in Ontario?
Some of the most popular sights in Ontario are Ontario Convention Center and Cucamonga-Guasti Regional Park. These are among the most viewed places in Ontario on KAYAK.

If your dates are flexible, aim for a Tuesday departure and avoid flying on Monday. On this route, Tuesday flights average $396, about $348 less than Monday fares (47% savings) based on the last 12 months.
If you can choose when to travel, plan your Green Bay to Ontario trip for November. Fares historically average $256 round-trip in that month - typically $605 less than the most expensive month, which is June (based on the last 12 months).
If you're arriving late at night and need somewhere to stay, check out these hotels close to Ontario Airport.

• Azure Hotel & Suites, Trademark Collection by Wyndham
• Ontario Airport Inn
• Holiday Inn Ontario Airport By IHG

More options for your flight from Green Bay to Ontario

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

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GRB - ONT

$377 Find Cheap Flights from Green Bay to Ontario - Compare and Save

Everything you should know

Cheap Flights from Green Bay to Ontario (GRB-ONT)

Recent round-trip flight deals from Green Bay to Ontario

Recent one-way flight deals from Green Bay to Ontario

Recent last minute flight deals from Green Bay to Ontario

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

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

Which airline is the cheapest to fly from Green Bay to Ontario?

What’s the most popular layover airport when flying from Green Bay to Ontario?

What is the cheapest layover airport when flying from Green Bay to Ontario?

When flying from Green Bay to Ontario which airport offers the shortest layover?

Key details for Green Bay to Ontario flights

Low season

High season

Cheapest flight

When to book flights from Green Bay to Ontario

Your Green Bay to Ontario flight questions, answered

Your guide to booking Green Bay to Ontario flights

More options for your flight from Green Bay to Ontario

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

Information on your arrival and departure airports

Cabin class types available on flights from Green Bay to Ontario

Find direct flights to and from Green Bay and Ontario

Flights from domestic origins to Ontario

Flights to other popular destinations

Find deals for your return flight