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Cheap flights from Ontario to Green Bay from $259

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 5/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Green Bay

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
12:41 pm - 11:53 pm
ONT
-
GRB
9h 12m
2 stops
American Airlines Logo
2:55 pm - 9:57 pm
GRB
-
ONT
9h 02m
2 stops
$345American Airlines
Sat, May 30 - Tue, Jun 2
Delta Logo
12:07 pm - 10:52 pm
ONT
-
GRB
8h 45m
1 stop
Delta Logo
5:20 am - 10:57 am
GRB
-
ONT
7h 37m
1 stop
$352Delta
Fri, May 29 - Wed, Jun 3
American Airlines Logo
7:35 pm - 9:12 am
ONT
-
GRB
11h 37m
2 stops
American Airlines Logo
9:42 am - 4:22 pm
GRB
-
ONT
8h 40m
2 stops
$379American Airlines
Thu, May 7 - Tue, May 12
Delta Logo
12:07 pm - 10:52 pm
ONT
-
GRB
8h 45m
1 stop
Delta Logo
5:20 am - 10:57 am
GRB
-
ONT
7h 37m
1 stop
$384Delta
Fri, May 29 - Tue, Jun 2
Delta Logo
6:00 am - 4:33 pm
ONT
-
GRB
8h 33m
2 stops
Delta Logo
7:00 am - 6:01 pm
GRB
-
ONT
13h 01m
2 stops
$387Delta
Sat, Aug 22 - Fri, Aug 28
Delta Logo
12:49 pm - 11:01 pm
ONT
-
GRB
8h 12m
1 stop
Delta Logo
5:20 am - 10:57 am
GRB
-
ONT
7h 37m
1 stop
$394Delta
Thu, Apr 30 - Sat, May 9
American Airlines Logo
8:02 pm - 9:04 am
ONT
-
GRB
11h 02m
2 stops
American Airlines Logo
9:52 am - 6:57 pm
GRB
-
ONT
11h 05m
2 stops
$396American Airlines
Thu, Sep 24 - Tue, Oct 6
Delta Logo
12:49 pm - 11:01 pm
ONT
-
GRB
8h 12m
1 stop
Delta Logo
6:20 am - 12:19 pm
GRB
-
ONT
7h 59m
2 stops
$399Delta
Thu, Apr 30 - Sat, May 9
United Airlines Logo
7:00 am - 3:07 pm
ONT
-
GRB
6h 07m
1 stop
United Airlines Logo
1:15 pm - 6:19 pm
GRB
-
ONT
7h 04m
1 stop
$408United Airlines
Sat, Aug 22 - Fri, Aug 28
United Airlines Logo
10:37 am - 12:07 am
ONT
-
GRB
11h 30m
2 stops
United Airlines Logo
5:35 pm - 10:35 pm
GRB
-
ONT
7h 00m
1 stop
$413United Airlines
Thu, May 7 - Tue, May 12

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United Airlines flights from Ontario to Green Bay

Our best United Airlines deals on Ontario to Green Bay flight tickets
United Airlines
Aug 22
ONT7:00 amOntario
6h 07m
1 stop
GRB3:07 pmGreen Bay Austin-Straubel
Aug 28
GRB1:15 pmGreen Bay Austin-Straubel
7h 04m
1 stop
ONT6:19 pmOntario
$408
United Airlines
May 7
ONT10:37 amOntario
11h 30m
2 stops
GRB12:07 amGreen Bay Austin-Straubel
May 12
GRB5:35 pmGreen Bay Austin-Straubel
7h 00m
1 stop
ONT10:35 pmOntario
$413
United Airlines
May 30
ONT6:30 amOntario
6h 39m
1 stop
GRB3:09 pmGreen Bay Austin-Straubel
Jun 2
GRB5:26 pmGreen Bay Austin-Straubel
7h 20m
1 stop
ONT10:46 pmOntario
$435

Delta flights from Ontario to Green Bay

Our best Delta deals on Ontario to Green Bay flight tickets
Delta
May 29
ONT12:07 pmOntario
8h 45m
1 stop
GRB10:52 pmGreen Bay Austin-Straubel
Jun 3
GRB5:20 amGreen Bay Austin-Straubel
7h 37m
1 stop
ONT10:57 amOntario
$352
Delta
May 29
ONT12:07 pmOntario
8h 45m
1 stop
GRB10:52 pmGreen Bay Austin-Straubel
Jun 2
GRB5:20 amGreen Bay Austin-Straubel
7h 37m
1 stop
ONT10:57 amOntario
$384
Delta
Aug 22
ONT6:00 amOntario
8h 33m
2 stops
GRB4:33 pmGreen Bay Austin-Straubel
Aug 28
GRB7:00 amGreen Bay Austin-Straubel
13h 01m
2 stops
ONT6:01 pmOntario
$387

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Green Bay that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated April 17, 2026.
Use the filters below to find and compare flights from Ontario to Green Bay that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Sat 5/30

12:41 pm-11:53 pm

2 stops9h 12m

Green Bay Austin-Straubel

Tue 6/2

2:55 pm-9:57 pm

2 stops9h 02m

$345

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Fri 5/29

12:07 pm-10:52 pm

1 stop8h 45m

Green Bay Austin-Straubel

Wed 6/3

5:20 am-10:57 am

1 stop7h 37m

$352

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Thu 5/7

7:35 pm-9:12 am

2 stops11h 37m

Green Bay Austin-Straubel

Tue 5/12

9:42 am-4:22 pm

2 stops8h 40m

$379

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Fri 5/29

12:07 pm-10:52 pm

1 stop8h 45m

Green Bay Austin-Straubel

Tue 6/2

5:20 am-10:57 am

1 stop7h 37m

$384

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Sat 8/22

6:00 am-4:33 pm

2 stops8h 33m

Green Bay Austin-Straubel

Fri 8/28

7:00 am-6:01 pm

2 stops13h 01m

$387

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Thu 4/30

12:49 pm-11:01 pm

1 stop8h 12m

Green Bay Austin-Straubel

Sat 5/9

5:20 am-10:57 am

1 stop7h 37m

$394

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Thu 9/24

8:02 pm-9:04 am

2 stops11h 02m

Green Bay Austin-Straubel

Tue 10/6

9:52 am-6:57 pm

2 stops11h 05m

$396

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Thu 4/30

12:49 pm-11:01 pm

1 stop8h 12m

Green Bay Austin-Straubel

Sat 5/9

6:20 am-12:19 pm

2 stops7h 59m

$399
Quickest round-trip

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Sat 8/22

7:00 am-3:07 pm

1 stop6h 07m

Green Bay Austin-Straubel

Fri 8/28

1:15 pm-6:19 pm

1 stop7h 04m

$408

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Thu 5/7

10:37 am-12:07 am

2 stops11h 30m

Green Bay Austin-Straubel

Tue 5/12

5:35 pm-10:35 pm

1 stop7h 00m

$413

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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

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

You could potentially save up to 54% 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

Fastest flight time

7h 50m

Direct flights

None
The fastest flight from Ontario to Green Bay takes 7h 50m
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 50m.

  • 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?

  • 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?

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
American AirlinesPriceFrom $299Free CancellationRating
7.1
11,593 reviews
Search American Airlines flights
United AirlinesPriceFrom $325Free CancellationRating
7.4
9,602 reviews
Search United Airlines flights

Traveling to a place near Green Bay?

Book flights to Green Bay if you plan to visit one of these locations
Sturgeon Bay
Manitowoc
Marinette
Shawano
De Pere

Why use momondo?

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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