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Cheap flights from Ontario to Green Bay from $234

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 2/16. 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

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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
12:41 pm - 10:30 pm
ONT
-
GRB
7h 49m1 stop
Delta Logo
5:12 am - 11:31 am
GRB
-
ONT
8h 19m1 stop
$309Delta
Thu, Jan 29 - Wed, Feb 4
Delta Logo
12:41 pm - 10:30 pm
ONT
-
GRB
7h 49m1 stop
Delta Logo
11:15 am - 9:05 pm
GRB
-
ONT
11h 50m2 stops
$314Delta
Thu, Jan 29 - Wed, Feb 4
Delta Logo
1:15 pm - 10:24 pm
ONT
-
GRB
7h 09m1 stop
Delta Logo
4:18 pm - 11:49 pm
GRB
-
ONT
9h 31m2 stops
$318Delta
Thu, Feb 12 - Tue, Feb 17
Delta Logo
10:30 pm - 10:35 am
ONT
-
GRB
10h 05m2 stops
Delta Logo
11:15 am - 9:05 pm
GRB
-
ONT
11h 50m2 stops
$320Delta
Thu, Jan 29 - Wed, Feb 4
Delta Logo
12:41 pm - 10:30 pm
ONT
-
GRB
7h 49m1 stop
Delta Logo
4:18 pm - 11:58 pm
GRB
-
ONT
9h 40m2 stops
$364Delta
Thu, Jan 22 - Mon, Jan 26
United Airlines Logo
11:59 pm - 9:59 am
ONT
-
GRB
8h 00m1 stop
United Airlines Logo
5:28 pm - 10:25 pm
GRB
-
ONT
6h 57m1 stop
$399United Airlines
Thu, Mar 5 - Tue, Mar 17
Delta Logo
10:30 pm - 10:35 am
ONT
-
GRB
10h 05m2 stops
Delta Logo
5:12 am - 11:31 am
GRB
-
ONT
8h 19m1 stop
$409Delta
Sat, Jan 17 - Wed, Jan 21
United Airlines Logo
6:37 pm - 2:06 pm
ONT
-
GRB
17h 29m3 stops
United Airlines Logo
5:28 pm - 10:25 pm
GRB
-
ONT
6h 57m1 stop
$410United Airlines
Wed, Mar 4 - Wed, Mar 18
Delta Logo
10:30 pm - 10:35 am
ONT
-
GRB
10h 05m2 stops
Delta Logo
4:18 pm - 11:58 pm
GRB
-
ONT
9h 40m2 stops
$415Delta
Sat, Jan 17 - Wed, Jan 21
United Airlines Logo
5:00 am - 4:53 pm
ONT
-
GRB
9h 53m2 stops
United Airlines Logo
5:28 pm - 10:25 pm
GRB
-
ONT
6h 57m1 stop
$424United Airlines
Wed, Mar 4 - Wed, Mar 18

American Airlines flights from Ontario to Green Bay

Our best American Airlines deals on Ontario to Green Bay flight tickets
American Airlines
Apr 30
ONT7:35 pmOntario
11h 35m
2 stops
GRB9:10 amGreen Bay Austin-Straubel
May 9
GRB9:46 amGreen Bay Austin-Straubel
13h 20m
2 stops
ONT9:06 pmOntario
$324
American Airlines
Apr 30
ONT7:35 pmOntario
11h 35m
2 stops
GRB9:10 amGreen Bay Austin-Straubel
May 9
GRB7:48 amGreen Bay Austin-Straubel
12h 49m
2 stops
ONT6:37 pmOntario
$408
American Airlines
Jan 22
ONT9:59 amOntario
10h 13m
3 stops
GRB10:12 pmGreen Bay Austin-Straubel
Jan 26
GRB11:20 amGreen Bay Austin-Straubel
9h 00m
2 stops
ONT6:20 pmOntario
$762

Delta flights from Ontario to Green Bay

Our best Delta deals on Ontario to Green Bay flight tickets
Delta
Jan 29
ONT12:41 pmOntario
7h 49m
1 stop
GRB10:30 pmGreen Bay Austin-Straubel
Feb 4
GRB5:12 amGreen Bay Austin-Straubel
8h 19m
1 stop
ONT11:31 amOntario
$309
Delta
Jan 29
ONT12:41 pmOntario
7h 49m
1 stop
GRB10:30 pmGreen Bay Austin-Straubel
Feb 4
GRB11:15 amGreen Bay Austin-Straubel
11h 50m
2 stops
ONT9:05 pmOntario
$314
Delta
Feb 12
ONT1:15 pmOntario
7h 09m
1 stop
GRB10:24 pmGreen Bay Austin-Straubel
Feb 17
GRB4:18 pmGreen Bay Austin-Straubel
9h 31m
2 stops
ONT11:49 pmOntario
$318

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 January 8, 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

Thu 1/29

12:41 pm-10:30 pm

1 stop7h 49m

Green Bay Austin-Straubel

Wed 2/4

5:12 am-11:31 am

1 stop8h 19m

$309

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Thu 1/29

12:41 pm-10:30 pm

1 stop7h 49m

Green Bay Austin-Straubel

Wed 2/4

11:15 am-9:05 pm

2 stops11h 50m

$314

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Thu 2/12

1:15 pm-10:24 pm

1 stop7h 09m

Green Bay Austin-Straubel

Tue 2/17

4:18 pm-11:49 pm

2 stops9h 31m

$318

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Thu 1/29

10:30 pm-10:35 am

2 stops10h 05m

Green Bay Austin-Straubel

Wed 2/4

11:15 am-9:05 pm

2 stops11h 50m

$320

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Thu 1/22

12:41 pm-10:30 pm

1 stop7h 49m

Green Bay Austin-Straubel

Mon 1/26

4:18 pm-11:58 pm

2 stops9h 40m

$364

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Thu 3/5

11:59 pm-9:59 am

1 stop8h 00m

Green Bay Austin-Straubel

Tue 3/17

5:28 pm-10:25 pm

1 stop6h 57m

$399

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Sat 1/17

10:30 pm-10:35 am

2 stops10h 05m

Green Bay Austin-Straubel

Wed 1/21

5:12 am-11:31 am

1 stop8h 19m

$409

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Wed 3/4

6:37 pm-2:06 pm

3 stops17h 29m

Green Bay Austin-Straubel

Wed 3/18

5:28 pm-10:25 pm

1 stop6h 57m

$410

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Sat 1/17

10:30 pm-10:35 am

2 stops10h 05m

Green Bay Austin-Straubel

Wed 1/21

4:18 pm-11:58 pm

2 stops9h 40m

$415

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Wed 3/4

5:00 am-4:53 pm

2 stops9h 53m

Green Bay Austin-Straubel

Wed 3/18

5:28 pm-10:25 pm

1 stop6h 57m

$424

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 18m

Direct flights

None
The fastest flight from Ontario to Green Bay takes 6h 18m
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 18m.

  • 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
DeltaPriceFrom $230Free CancellationRating
7.9
8,025 reviews
Search Delta flights
American AirlinesPriceFrom $299Free CancellationRating
7.2
11,094 reviews
Search American Airlines flights
United AirlinesPriceFrom $368Free CancellationRating
7.4
9,139 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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