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Cheap flights from Ontario to Green Bay from $258

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 7/8. 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

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Find the cheapest flights from Ontario to Green Bay

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
11:59 am - 10:29 pm
ONT
-
GRB
8h 30m
1 stop
Delta Logo
7:00 am - 4:12 pm
GRB
-
ONT
11h 12m
2 stops
$354Delta
Thu, Sep 24 - Tue, Oct 6
Delta Logo
11:59 am - 10:29 pm
ONT
-
GRB
8h 30m
1 stop
Delta Logo
5:30 am - 11:27 am
GRB
-
ONT
7h 57m
1 stop
$374Delta
Thu, Sep 24 - Tue, Oct 6
American Airlines Logo
7:11 pm - 9:35 am
ONT
-
GRB
12h 24m
2 stops
American Airlines Logo
8:10 pm - 8:30 am
GRB
-
ONT
14h 20m
2 stops
$402American 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
8:10 pm - 8:30 am
GRB
-
ONT
14h 20m
2 stops
$403American Airlines
Thu, Sep 24 - Tue, Oct 6
Delta Logo
11:59 am - 10:29 pm
ONT
-
GRB
8h 30m
1 stop
Delta Logo
5:30 am - 11:27 am
GRB
-
ONT
7h 57m
1 stop
$414Delta
Thu, Sep 24 - Tue, Oct 6
Delta Logo
10:00 pm - 11:22 am
ONT
-
GRB
11h 22m
2 stops
Delta Logo
5:24 am - 4:24 pm
GRB
-
ONT
13h 00m
2 stops
$425Delta
Thu, Aug 27 - Sun, Aug 30
Delta Logo
11:59 am - 10:29 pm
ONT
-
GRB
8h 30m
1 stop
Delta Logo
5:30 am - 11:27 am
GRB
-
ONT
7h 57m
1 stop
$438Delta
Thu, Sep 24 - Tue, Oct 6
United Airlines Logo
1:18 pm - 11:19 pm
ONT
-
GRB
8h 01m
2 stops
United Airlines Logo
10:45 am - 8:52 pm
GRB
-
ONT
12h 07m
2 stops
$454United Airlines
Sat, Oct 10 - Tue, Oct 20
United Airlines Logo
6:53 pm - 10:30 am
ONT
-
GRB
13h 37m
2 stops
United Airlines Logo
6:30 am - 5:47 pm
GRB
-
ONT
13h 17m
2 stops
$459United Airlines
Tue, Nov 10 - Sat, Nov 14
Delta Logo
11:50 am - 10:51 pm
ONT
-
GRB
9h 01m
1 stop
Delta Logo
5:10 am - 10:40 am
GRB
-
ONT
7h 30m
1 stop
$485Delta
Tue, Jun 16 - Sun, Jun 21

United Airlines flights from Ontario to Green Bay

Our best United Airlines deals on Ontario to Green Bay flight tickets
United Airlines
Oct 10
ONT1:18 pmOntario
8h 01m
2 stops
GRB11:19 pmGreen Bay Austin-Straubel
Oct 20
GRB10:45 amGreen Bay Austin-Straubel
12h 07m
2 stops
ONT8:52 pmOntario
$454
United Airlines
Nov 10
ONT6:53 pmOntario
13h 37m
2 stops
GRB10:30 amGreen Bay Austin-Straubel
Nov 14
GRB6:30 amGreen Bay Austin-Straubel
13h 17m
2 stops
ONT5:47 pmOntario
$459
United Airlines
Jun 6
ONT6:39 pmOntario
13h 22m
2 stops
GRB10:01 amGreen Bay Austin-Straubel
Jun 13
GRB8:03 amGreen Bay Austin-Straubel
11h 53m
2 stops
ONT5:56 pmOntario
$537

Delta flights from Ontario to Green Bay

Our best Delta deals on Ontario to Green Bay flight tickets
Delta
Sep 24
ONT11:59 amOntario
8h 30m
1 stop
GRB10:29 pmGreen Bay Austin-Straubel
Oct 6
GRB7:00 amGreen Bay Austin-Straubel
11h 12m
2 stops
ONT4:12 pmOntario
$354
Delta
Sep 24
ONT11:59 amOntario
8h 30m
1 stop
GRB10:29 pmGreen Bay Austin-Straubel
Oct 6
GRB5:30 amGreen Bay Austin-Straubel
7h 57m
1 stop
ONT11:27 amOntario
$374
Delta
Sep 24
ONT11:59 amOntario
8h 30m
1 stop
GRB10:29 pmGreen Bay Austin-Straubel
Oct 6
GRB5:30 amGreen Bay Austin-Straubel
7h 57m
1 stop
ONT11:27 amOntario
$414

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 June 4, 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

Thu 9/24

11:59 am-10:29 pm

1 stop8h 30m

Green Bay Austin-Straubel

Tue 10/6

7:00 am-4:12 pm

2 stops11h 12m

$354
Quickest round-trip

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Thu 9/24

11:59 am-10:29 pm

1 stop8h 30m

Green Bay Austin-Straubel

Tue 10/6

5:30 am-11:27 am

1 stop7h 57m

$374

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

8:10 pm-8:30 am

2 stops14h 20m

$402

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

8:10 pm-8:30 am

2 stops14h 20m

$403

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Thu 9/24

11:59 am-10:29 pm

1 stop8h 30m

Green Bay Austin-Straubel

Tue 10/6

5:30 am-11:27 am

1 stop7h 57m

$414

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Thu 8/27

10:00 pm-11:22 am

2 stops11h 22m

Green Bay Austin-Straubel

Sun 8/30

5:24 am-4:24 pm

2 stops13h 00m

$425

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Thu 9/24

11:59 am-10:29 pm

1 stop8h 30m

Green Bay Austin-Straubel

Tue 10/6

5:30 am-11:27 am

1 stop7h 57m

$438

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Sat 10/10

1:18 pm-11:19 pm

2 stops8h 01m

Green Bay Austin-Straubel

Tue 10/20

10:45 am-8:52 pm

2 stops12h 07m

$454

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Tue 11/10

6:53 pm-10:30 am

2 stops13h 37m

Green Bay Austin-Straubel

Sat 11/14

6:30 am-5:47 pm

2 stops13h 17m

$459

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Tue 6/16

11:50 am-10:51 pm

1 stop9h 01m

Green Bay Austin-Straubel

Sun 6/21

5:10 am-10:40 am

1 stop7h 30m

$485

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Green Bay from

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

What is the typical price of a round-trip flight between Ontario and Green Bay?

What is the cheapest month to fly to Green Bay?

The month of February is, on average, the cheapest month to fly to Green Bay from Ontario, with most prices found around $0. If you aren’t able to travel during the month of February, then book flights to Green Bay from Ontario during January instead. Flights to Green Bay in January, while not as cheap as those in February, still average around $0.

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

You could potentially save up to 41% 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 57m

Direct flights

None
The fastest flight from Ontario to Green Bay takes 7h 57m
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 57m.

  • 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
11,641 reviews
Search American Airlines flights
United AirlinesPriceFrom $344Free CancellationRating
7.4
9,773 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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