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Cheap flights from Ontario to Green Bay from $202

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 4/25. 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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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
12:49 pm - 11:01 pm
ONT
-
GRB
8h 12m
1 stop
Delta Logo
5:15 am - 11:36 am
GRB
-
ONT
8h 21m
1 stop
$309Delta
Fri, Apr 17 - Sat, Apr 18
United Airlines Logo
6:05 am - 7:13 pm
ONT
-
GRB
11h 08m
2 stops
United Airlines Logo
5:35 pm - 10:26 pm
GRB
-
ONT
6h 51m
1 stop
$314United Airlines
Fri, Apr 17 - Sat, Apr 18
American Airlines Logo
7:35 pm - 9:12 am
ONT
-
GRB
11h 37m
2 stops
American Airlines Logo
9:42 am - 9:07 pm
GRB
-
ONT
13h 25m
2 stops
$319American Airlines
Thu, Apr 30 - Sat, May 9
United Airlines Logo
11:05 am - 11:57 pm
ONT
-
GRB
10h 52m
2 stops
United Airlines Logo
10:40 am - 5:47 pm
GRB
-
ONT
9h 07m
2 stops
$337United Airlines
Fri, Apr 17 - Sat, Apr 18
Delta Logo
12:49 pm - 11:01 pm
ONT
-
GRB
8h 12m
1 stop
Delta Logo
5:15 am - 11:36 am
GRB
-
ONT
8h 21m
1 stop
$354Delta
Sat, Apr 18 - Tue, Apr 28
United Airlines Logo
6:00 am - 4:52 pm
ONT
-
GRB
8h 52m
2 stops
United Airlines Logo
2:54 pm - 10:18 pm
GRB
-
ONT
9h 24m
1 stop
$364United Airlines
Wed, Mar 11 - Sun, Mar 15
American Airlines Logo
4:52 pm - 9:12 am
ONT
-
GRB
14h 20m
2 stops
American Airlines Logo
7:30 am - 6:37 pm
GRB
-
ONT
13h 07m
2 stops
$394American Airlines
Sat, Apr 25 - Sat, May 16
United Airlines Logo
6:30 am - 4:51 pm
ONT
-
GRB
8h 21m
1 stop
United Airlines Logo
5:26 pm - 10:46 pm
GRB
-
ONT
7h 20m
1 stop
$399United Airlines
Wed, May 27 - Wed, Jun 10
American Airlines Logo
7:35 pm - 9:12 am
ONT
-
GRB
11h 37m
2 stops
American Airlines Logo
7:30 am - 6:37 pm
GRB
-
ONT
13h 07m
2 stops
$407American Airlines
Thu, Apr 30 - Sat, May 9
United Airlines Logo
11:05 am - 11:57 pm
ONT
-
GRB
10h 52m
2 stops
United Airlines Logo
5:00 am - 5:47 pm
GRB
-
ONT
14h 47m
3 stops
$415United Airlines
Fri, Apr 17 - Sat, Apr 18

United Airlines flights from Ontario to Green Bay

Our best United Airlines deals on Ontario to Green Bay flight tickets
United Airlines
Apr 17
ONT6:05 amOntario
11h 08m
2 stops
GRB7:13 pmGreen Bay Austin-Straubel
Apr 18
GRB5:35 pmGreen Bay Austin-Straubel
6h 51m
1 stop
ONT10:26 pmOntario
$314
United Airlines
Apr 17
ONT11:05 amOntario
10h 52m
2 stops
GRB11:57 pmGreen Bay Austin-Straubel
Apr 18
GRB10:40 amGreen Bay Austin-Straubel
9h 07m
2 stops
ONT5:47 pmOntario
$337
United Airlines
Mar 11
ONT6:00 amOntario
8h 52m
2 stops
GRB4:52 pmGreen Bay Austin-Straubel
Mar 15
GRB2:54 pmGreen Bay Austin-Straubel
9h 24m
1 stop
ONT10:18 pmOntario
$364

Delta flights from Ontario to Green Bay

Our best Delta deals on Ontario to Green Bay flight tickets
Delta
Apr 17
ONT12:49 pmOntario
8h 12m
1 stop
GRB11:01 pmGreen Bay Austin-Straubel
Apr 18
GRB5:15 amGreen Bay Austin-Straubel
8h 21m
1 stop
ONT11:36 amOntario
$309
Delta
Apr 18
ONT12:49 pmOntario
8h 12m
1 stop
GRB11:01 pmGreen Bay Austin-Straubel
Apr 28
GRB5:15 amGreen Bay Austin-Straubel
8h 21m
1 stop
ONT11:36 amOntario
$354
Delta
Mar 24
ONT12:57 pmOntario
7h 55m
1 stop
GRB10:52 pmGreen Bay Austin-Straubel
Mar 25
GRB4:19 pmGreen Bay Austin-Straubel
9h 32m
2 stops
ONT11:51 pmOntario
$442

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 February 26, 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

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Fri 4/17

12:49 pm-11:01 pm

1 stop8h 12m

Green Bay Austin-Straubel

Sat 4/18

5:15 am-11:36 am

1 stop8h 21m

$309

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Fri 4/17

6:05 am-7:13 pm

2 stops11h 08m

Green Bay Austin-Straubel

Sat 4/18

5:35 pm-10:26 pm

1 stop6h 51m

$314

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Thu 4/30

7:35 pm-9:12 am

2 stops11h 37m

Green Bay Austin-Straubel

Sat 5/9

9:42 am-9:07 pm

2 stops13h 25m

$319

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Fri 4/17

11:05 am-11:57 pm

2 stops10h 52m

Green Bay Austin-Straubel

Sat 4/18

10:40 am-5:47 pm

2 stops9h 07m

$337

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Sat 4/18

12:49 pm-11:01 pm

1 stop8h 12m

Green Bay Austin-Straubel

Tue 4/28

5:15 am-11:36 am

1 stop8h 21m

$354

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Wed 3/11

6:00 am-4:52 pm

2 stops8h 52m

Green Bay Austin-Straubel

Sun 3/15

2:54 pm-10:18 pm

1 stop9h 24m

$364

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Sat 4/25

4:52 pm-9:12 am

2 stops14h 20m

Green Bay Austin-Straubel

Sat 5/16

7:30 am-6:37 pm

2 stops13h 07m

$394

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Wed 5/27

6:30 am-4:51 pm

1 stop8h 21m

Green Bay Austin-Straubel

Wed 6/10

5:26 pm-10:46 pm

1 stop7h 20m

$399

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Thu 4/30

7:35 pm-9:12 am

2 stops11h 37m

Green Bay Austin-Straubel

Sat 5/9

7:30 am-6:37 pm

2 stops13h 07m

$407

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Fri 4/17

11:05 am-11:57 pm

2 stops10h 52m

Green Bay Austin-Straubel

Sat 4/18

5:00 am-5:47 pm

3 stops14h 47m

$415

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 21% 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

6h 39m

Direct flights

None
The fastest flight from Ontario to Green Bay takes 6h 39m
There are no direct flights from Ontario to Green Bay. There are no popular flight routes from Ontario to Green Bay.
Search flight deals

  • 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 6h 39m.

  • 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
7.2
11,352 reviews
Search American Airlines flights
United AirlinesPriceFrom $325Free CancellationRating
7.4
9,348 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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