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Cheap flights from Ontario to Green Bay from $299

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 9/3. 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
1 adult, Economy, 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.
Delta Logo
12:00 pm - 10:06 pm
ONT
-
GRB
8h 06m
1 stop
Delta Logo
5:24 am - 10:42 am
GRB
-
ONT
7h 18m
1 stop
$349Delta
Thu, Aug 13 - Tue, Aug 18
Delta Logo
12:00 pm - 10:06 pm
ONT
-
GRB
8h 06m
1 stop
Delta Logo
11:07 am - 7:53 pm
GRB
-
ONT
10h 46m
2 stops
$354Delta
Thu, Aug 13 - Tue, Aug 18
Delta Logo
9:43 am - 10:06 pm
ONT
-
GRB
10h 23m
2 stops
Delta Logo
4:13 pm - 11:34 pm
GRB
-
ONT
9h 21m
2 stops
$359Delta
Thu, Aug 13 - Tue, Aug 18
American Airlines Logo
7:11 pm - 9:35 am
ONT
-
GRB
12h 24m
2 stops
American Airlines Logo
9:58 am - 6:43 pm
GRB
-
ONT
10h 45m
2 stops
$385American Airlines
Thu, Sep 24 - Tue, Oct 6
American Airlines Logo
7:11 pm - 9:35 am
ONT
-
GRB
12h 24m
2 stops
American Airlines Logo
9:58 am - 6:43 pm
GRB
-
ONT
10h 45m
2 stops
$386American Airlines
Thu, Sep 24 - Tue, Oct 6
Delta Logo
12:00 pm - 10:06 pm
ONT
-
GRB
8h 06m
1 stop
Delta Logo
5:24 am - 10:42 am
GRB
-
ONT
7h 18m
1 stop
$414Delta
Thu, Aug 13 - Sun, Aug 16
Delta Logo
9:43 am - 10:06 pm
ONT
-
GRB
10h 23m
2 stops
Delta Logo
5:24 am - 10:42 am
GRB
-
ONT
7h 18m
1 stop
$419Delta
Thu, Aug 13 - Sun, Aug 16
Delta Logo
9:43 am - 10:06 pm
ONT
-
GRB
10h 23m
2 stops
Delta Logo
4:13 pm - 11:34 pm
GRB
-
ONT
9h 21m
2 stops
$424Delta
Thu, Aug 13 - Tue, Aug 18
Delta Logo
12:00 pm - 10:06 pm
ONT
-
GRB
8h 06m
1 stop
Delta Logo
5:24 am - 10:42 am
GRB
-
ONT
7h 18m
1 stop
$438Delta
Thu, Aug 13 - Tue, Aug 18
Delta Logo
12:17 pm - 10:24 pm
ONT
-
GRB
8h 07m
1 stop
Delta Logo
1:10 pm - 6:41 pm
GRB
-
ONT
7h 31m
1 stop
$439Delta
Fri, Sep 25 - Sat, Oct 3

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Delta flights from Ontario to Green Bay

Our best Delta deals on Ontario to Green Bay flight tickets
Delta
Aug 13
ONT12:00 pmOntario
8h 06m
1 stop
GRB10:06 pmGreen Bay Austin-Straubel
Aug 18
GRB5:24 amGreen Bay Austin-Straubel
7h 18m
1 stop
ONT10:42 amOntario
$349
Delta
Aug 13
ONT12:00 pmOntario
8h 06m
1 stop
GRB10:06 pmGreen Bay Austin-Straubel
Aug 18
GRB11:07 amGreen Bay Austin-Straubel
10h 46m
2 stops
ONT7:53 pmOntario
$354
Delta
Aug 13
ONT9:43 amOntario
10h 23m
2 stops
GRB10:06 pmGreen Bay Austin-Straubel
Aug 18
GRB4:13 pmGreen Bay Austin-Straubel
9h 21m
2 stops
ONT11:34 pmOntario
$359

American Airlines flights from Ontario to Green Bay

Our best American Airlines deals on Ontario to Green Bay flight tickets
American Airlines
Sep 24
ONT7:11 pmOntario
12h 24m
2 stops
GRB9:35 amGreen Bay Austin-Straubel
Oct 6
GRB9:58 amGreen Bay Austin-Straubel
10h 45m
2 stops
ONT6:43 pmOntario
$385
American Airlines
Sep 24
ONT7:11 pmOntario
12h 24m
2 stops
GRB9:35 amGreen Bay Austin-Straubel
Oct 6
GRB9:58 amGreen Bay Austin-Straubel
10h 45m
2 stops
ONT6:43 pmOntario
$386
American Airlines
Nov 13
ONT1:23 pmOntario
8h 42m
2 stops
GRB12:05 amGreen Bay Austin-Straubel
Nov 15
GRB8:27 pmGreen Bay Austin-Straubel
14h 12m
2 stops
ONT8:39 amOntario
$450

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 July 21, 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
Quickest round-trip

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Thu 8/13

12:00 pm-10:06 pm

1 stop8h 06m

Green Bay Austin-Straubel

Tue 8/18

5:24 am-10:42 am

1 stop7h 18m

$349

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Thu 8/13

12:00 pm-10:06 pm

1 stop8h 06m

Green Bay Austin-Straubel

Tue 8/18

11:07 am-7:53 pm

2 stops10h 46m

$354

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Thu 8/13

9:43 am-10:06 pm

2 stops10h 23m

Green Bay Austin-Straubel

Tue 8/18

4:13 pm-11:34 pm

2 stops9h 21m

$359

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Thu 9/24

7:11 pm-9:35 am

2 stops12h 24m

Green Bay Austin-Straubel

Tue 10/6

9:58 am-6:43 pm

2 stops10h 45m

$385

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Thu 9/24

7:11 pm-9:35 am

2 stops12h 24m

Green Bay Austin-Straubel

Tue 10/6

9:58 am-6:43 pm

2 stops10h 45m

$386

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Thu 8/13

12:00 pm-10:06 pm

1 stop8h 06m

Green Bay Austin-Straubel

Sun 8/16

5:24 am-10:42 am

1 stop7h 18m

$414

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Thu 8/13

9:43 am-10:06 pm

2 stops10h 23m

Green Bay Austin-Straubel

Sun 8/16

5:24 am-10:42 am

1 stop7h 18m

$419

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Thu 8/13

9:43 am-10:06 pm

2 stops10h 23m

Green Bay Austin-Straubel

Tue 8/18

4:13 pm-11:34 pm

2 stops9h 21m

$424

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Thu 8/13

12:00 pm-10:06 pm

1 stop8h 06m

Green Bay Austin-Straubel

Tue 8/18

5:24 am-10:42 am

1 stop7h 18m

$438

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Fri 9/25

12:17 pm-10:24 pm

1 stop8h 07m

Green Bay Austin-Straubel

Sat 10/3

1:10 pm-6:41 pm

1 stop7h 31m

$439

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 31% 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

8h 06m

Direct flights

None
The fastest flight from Ontario to Green Bay takes 8h 06m
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 8h 06m.

  • 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
United AirlinesPriceFrom $344Free CancellationRating
7.4
10,011 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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