What is the cheapest airline that flies from Ontario to Green Bay Austin-Straubel?

Delta, American Airlines, and United Airlines are the most popular carriers operating from Ontario to Green Bay Austin-Straubel

What airlines fly to Green Bay?

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Green Bay from Ontario according to our data. United Airlines is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Green Bay. Keep in mind that there are 4 different airlines that fly to Green Bay on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Ontario Airport to Green Bay Austin-Straubel Airport?

Prices for flights from Ontario Airport to Green Bay Austin-Straubel Airport were last updated today.

How many operators does momondo search for flights from Ontario Airport to Green Bay Austin-Straubel Airport?

As of September 2026, there are 2 operators available to choose from for flights from Ontario Airport to Green Bay Austin-Straubel Airport.

How old do you have to be to fly from Ontario Airport to Green Bay Austin-Straubel Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Green Bay Austin-Straubel Airport.

What documentation or ID do you need to fly to Green Bay Austin-Straubel Airport?

The necessary travel and health documents for your Green Bay Austin-Straubel Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$287 Cheap Flights from Ontario to Green Bay in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Green Bay

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7:00 am - 4:54 pmONT Ontario-GRB Green Bay Austin-Straubel

7h 54m1 stop Chicago O'Hare Intl

1:32 pm - 6:47 pmGRB Green Bay Austin-Straubel-ONT Ontario

7h 15m1 stop Chicago O'Hare Intl

$379United Airlines

Sat, Oct 24 - Tue, Oct 27

7:00 am - 4:54 pmONT Ontario-GRB Green Bay Austin-Straubel

7h 54m1 stop Chicago O'Hare Intl

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

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

$384United Airlines

Sat, Oct 24 - Tue, Oct 27

6:00 am - 7:48 pmONT Ontario-GRB Green Bay Austin-Straubel

11h 48m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

1:32 pm - 6:47 pmGRB Green Bay Austin-Straubel-ONT Ontario

7h 15m1 stop Chicago O'Hare Intl

$384United Airlines

Tue, Oct 20 - Tue, Oct 27

11:20 am - 10:50 pmONT Ontario-GRB Green Bay Austin-Straubel

9h 30m2 stops San Francisco Chicago O'Hare Intl

1:25 pm - 8:20 pmGRB Green Bay Austin-Straubel-ONT Ontario

8h 55m2 stops Chicago O'Hare Intl Denver Intl

$389United Airlines

Fri, Jan 29 - Mon, Feb 1

6:00 am - 4:19 pmONT Ontario-GRB Green Bay Austin-Straubel

8h 19m2 stops Salt Lake City Detroit Metropolitan Wayne County

4:00 pm - 10:48 pmGRB Green Bay Austin-Straubel-ONT Ontario

8h 48m2 stops Minneapolis St Paul Salt Lake City

$476Delta

Fri, Jan 1 - Wed, Jan 6

9:29 am - 7:57 pmONT Ontario-GRB Green Bay Austin-Straubel

8h 28m2 stops Phoenix Sky Harbor Intl Chicago O'Hare Intl

5:30 am - 1:30 pmGRB Green Bay Austin-Straubel-ONT Ontario

10h 00m2 stops Chicago O'Hare Intl Dallas/Fort Worth

$487American Airlines

Thu, Dec 10 - Tue, Jan 5

12:16 pm - 10:17 pmONT Ontario-GRB Green Bay Austin-Straubel

8h 01m1 stop Atlanta Hartsfield-Jackson

5:30 am - 11:06 amGRB Green Bay Austin-Straubel-ONT Ontario

7h 36m1 stop Atlanta Hartsfield-Jackson

$499Delta

Sat, Oct 24 - Sat, Oct 31

12:16 pm - 10:17 pmONT Ontario-GRB Green Bay Austin-Straubel

8h 01m1 stop Atlanta Hartsfield-Jackson

12:29 pm - 10:43 pmGRB Green Bay Austin-Straubel-ONT Ontario

12h 14m2 stops Minneapolis St Paul Seattle/Tacoma Intl

$500Delta

Sat, Oct 24 - Tue, Oct 27

6:26 am - 7:39 pmONT Ontario-GRB Green Bay Austin-Straubel

11h 13m1 stop Chicago O'Hare Intl

2:28 pm - 11:16 pmGRB Green Bay Austin-Straubel-ONT Ontario

10h 48m1 stop Chicago O'Hare Intl

$537American Airlines

Fri, Jan 29 - Mon, Feb 1

6:12 am - 3:00 pmONT Ontario-GRB Green Bay Austin-Straubel

6h 48m1 stop Chicago O'Hare Intl

2:12 pm - 8:37 amGRB Green Bay Austin-Straubel-ONT Ontario

20h 25m2 stops Chicago O'Hare Intl Phoenix Sky Harbor Intl

$585American Airlines

Fri, Jan 1 - Wed, Jan 6

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Delta flights from Ontario to Green Bay

Our best Delta deals on Ontario to Green Bay flight tickets

Delta

Jan 1

ONT6:00 amOntario

8h 19m

2 stops

GRB4:19 pmGreen Bay Austin-Straubel

Jan 6

GRB4:00 pmGreen Bay Austin-Straubel

8h 48m

2 stops

ONT10:48 pmOntario

$476

Delta

Oct 24

ONT12:16 pmOntario

8h 01m

1 stop

GRB10:17 pmGreen Bay Austin-Straubel

Oct 31

GRB5:30 amGreen Bay Austin-Straubel

7h 36m

1 stop

ONT11:06 amOntario

$499

Delta

Oct 24

ONT12:16 pmOntario

8h 01m

1 stop

GRB10:17 pmGreen Bay Austin-Straubel

Oct 27

GRB12:29 pmGreen Bay Austin-Straubel

12h 14m

2 stops

ONT10:43 pmOntario

$500

United Airlines flights from Ontario to Green Bay

Our best United Airlines deals on Ontario to Green Bay flight tickets

United Airlines

Oct 24

ONT7:00 amOntario

7h 54m

1 stop

GRB4:54 pmGreen Bay Austin-Straubel

Oct 27

GRB1:32 pmGreen Bay Austin-Straubel

7h 15m

1 stop

ONT6:47 pmOntario

$379

United Airlines

Oct 20

ONT6:00 amOntario

11h 48m

2 stops

GRB7:48 pmGreen Bay Austin-Straubel

Oct 27

GRB1:32 pmGreen Bay Austin-Straubel

7h 15m

1 stop

ONT6:47 pmOntario

$384

United Airlines

Oct 20

ONT1:22 pmOntario

7h 57m

2 stops

GRB11:19 pmGreen Bay Austin-Straubel

Oct 27

GRB8:00 amGreen Bay Austin-Straubel

12h 01m

2 stops

ONT6:01 pmOntario

$389

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

OntarioGreen Bay

ONT Ontario - GRB Green Bay Austin-Straubel

ONTGRB

Ontario

Sat 10/24

7:00 am-4:54 pm

1 stop7h 54m

Green Bay Austin-Straubel

Tue 10/27

1:32 pm-6:47 pm

1 stop7h 15m

$379

OntarioGreen Bay

ONT Ontario - GRB Green Bay Austin-Straubel

ONTGRB

Ontario

Sat 10/24

7:00 am-4:54 pm

1 stop7h 54m

Green Bay Austin-Straubel

Tue 10/27

10:37 am-8:15 pm

2 stops11h 38m

$384

OntarioGreen Bay

ONT Ontario - GRB Green Bay Austin-Straubel

ONTGRB

Ontario

Tue 10/20

6:00 am-7:48 pm

2 stops11h 48m

Green Bay Austin-Straubel

Tue 10/27

1:32 pm-6:47 pm

1 stop7h 15m

$384

OntarioGreen Bay

ONT Ontario - GRB Green Bay Austin-Straubel

ONTGRB

Ontario

Fri 1/29

11:20 am-10:50 pm

2 stops9h 30m

Green Bay Austin-Straubel

Mon 2/1

1:25 pm-8:20 pm

2 stops8h 55m

$389

OntarioGreen Bay

ONT Ontario - GRB Green Bay Austin-Straubel

ONTGRB

Ontario

Fri 1/1

6:00 am-4:19 pm

2 stops8h 19m

Green Bay Austin-Straubel

Wed 1/6

4:00 pm-10:48 pm

2 stops8h 48m

$476

OntarioGreen Bay

ONT Ontario - GRB Green Bay Austin-Straubel

ONTGRB

Ontario

Thu 12/10

9:29 am-7:57 pm

2 stops8h 28m

Green Bay Austin-Straubel

Tue 1/5

5:30 am-1:30 pm

2 stops10h 00m

$487

OntarioGreen Bay

ONT Ontario - GRB Green Bay Austin-Straubel

ONTGRB

Ontario

Sat 10/24

12:16 pm-10:17 pm

1 stop8h 01m

Green Bay Austin-Straubel

Sat 10/31

5:30 am-11:06 am

1 stop7h 36m

$499

OntarioGreen Bay

ONT Ontario - GRB Green Bay Austin-Straubel

ONTGRB

Ontario

Sat 10/24

12:16 pm-10:17 pm

1 stop8h 01m

Green Bay Austin-Straubel

Tue 10/27

12:29 pm-10:43 pm

2 stops12h 14m

$500

OntarioGreen Bay

ONT Ontario - GRB Green Bay Austin-Straubel

ONTGRB

Ontario

Fri 1/29

6:26 am-7:39 pm

1 stop11h 13m

Green Bay Austin-Straubel

Mon 2/1

2:28 pm-11:16 pm

1 stop10h 48m

$537

OntarioGreen Bay

ONT Ontario - GRB Green Bay Austin-Straubel

ONTGRB

Ontario

Fri 1/1

6:12 am-3:00 pm

1 stop6h 48m

Green Bay Austin-Straubel

Wed 1/6

2:12 pm-8:37 am

2 stops20h 25m

$585

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to Green Bay

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Can stopping save me money on Ontario to Green Bay flights?

You could potentially save up to 25% on your flight if you consider stops on a Ontario to Green Bay flight.

When to book flights from Ontario to Green Bay

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Green Bay according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Ontario to Green Bay (ONT to GRB) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Green Bay

Best Price Found	$287
Fastest flight time	7h 54m
Direct flights	None

The best one-way flight to Green Bay from Ontario in the past 72 hours is $287. The best round-trip flight deal from Ontario to Green Bay found on momondo in the last 72 hours is $379.

The fastest flight from Ontario to Green Bay takes 7h 54m

There are no direct flights from Ontario to Green Bay. There are no popular flight routes from Ontario to Green Bay.

Search flight deals

Frequently asked questions about flying from Ontario to Green Bay

How far is Ontario to Green Bay Austin-Straubel by plane?
The straight-line distance from Ontario to Green Bay Austin-Straubel is 1727.6 mi. By plane, this route typically takes 7h 54m.
When did momondo last update prices for flights from Ontario Airport to Green Bay Austin-Straubel Airport?
Prices for flights from Ontario Airport to Green Bay Austin-Straubel Airport were last updated today.
How many operators does momondo search for flights from Ontario Airport to Green Bay Austin-Straubel Airport?
As of September 2026, there are 2 operators available to choose from for flights from Ontario Airport to Green Bay Austin-Straubel Airport.
How old do you have to be to fly from Ontario Airport to Green Bay Austin-Straubel Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Green Bay Austin-Straubel Airport.
What documentation or ID do you need to fly to Green Bay Austin-Straubel Airport?
The necessary travel and health documents for your Green Bay Austin-Straubel Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Ontario to Green Bay?
momondo data reveals that the most frequently booked airline on the route from Ontario to Green Bay is United Airlines, representing 58% of all bookings. The subsequent popular airline is Delta at 42%.

Best airlines flying from Ontario to Green Bay

Compare and see reviews for airlines that fly from Ontario to Green Bay with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $230	Free Cancellation	Rating 7.8 8,603 reviews		Search Delta flights
United Airlines	PriceFrom $344	Free Cancellation	Rating 7.4 10,238 reviews		Search United Airlines flights

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Why should I use momondo to find a flight deal from Ontario to Green Bay?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Green Bay. momondo saves you time and could save you money on your trip.

Can I find flights from Ontario to Green Bay with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Ontario to Green Bay flights to just show those with flexible booking policies.

How can momondo help me find flights from Ontario to Green Bay?

momondo provides multiple filters to help you find the best flight to Green Bay from Ontario. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Ontario to Green Bay right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Ontario to Green Bay flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Cheap flights from Ontario to Green Bay from $287

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Green Bay departing on 11/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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How to get the cheapest flight ticket from Ontario to Green Bay

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What is the cheapest airline that flies from Ontario to Green Bay Austin-Straubel?

What airlines fly to Green Bay?

When to book flights from Ontario to Green Bay

Cheap Ontario to Green Bay (ONT to GRB) flight deals and tips

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An easier way to manage your Green Bay trip

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