Cheap flights from Ontario to Green Bay (ONT - GRB) from $95

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
ONT — GRB
Apr 22 — Apr 291

Cheap flight deals from Ontario to Green Bay

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Green Bay (GRB). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 17, 2024.

Popular in

April

Cheapest in

July

Round-trip from

$334

One-way from

$229
High demand for flights, 35% potential price rise
Best time to find cheap flights, 64% potential price drop
From Ontario to Green Bay Austin-Straubel
One-way flight from Ontario to Green Bay Austin-Straubel

What is the cheapest day to fly round-trip from Ontario to Green Bay?

Departing on a Sunday is a good option for securing a great price. You can expect to save up to 219% when planning your travel around this day of the week.

How far in advance should I book a flight from Ontario to Green Bay?

To save on the cost of your flight from Ontario to Green Bay, book at least 52 days before your planned departure. Booking around this time can save you about 67% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $459 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $758.

What is the cheapest month to fly from Ontario to Green Bay?

April is one of the best times of the year to fly to Green Bay from Ontario. Prices for April average $583 per person but you can even find prices for as low as $458. The most expensive prices can be found in the month of December. Opting for a April flight can save you 25% on your journey compared to booking in December

When is the cheapest time to fly from Ontario to Green Bay (ONT - GRB)?

One of the essential ways to save on airfare from Ontario to Green Bay is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 31% on airfare.

Cheap Frontier flights from Ontario to Green Bay

Explore cheap flight options specifically provided by Frontier for the route between Ontario and Green Bay. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,192,047 searches. Data last updated April 17, 2024.
Find some of the cheapest Frontier flights traveling from Ontario to Green Bay. Deals update often to give you more flight options matching your criteria
Thu 8/1512:49 amONT - GRB
1 stop16h 32mFrontier
Fri 8/238:22 pmGRB - ONT
1 stop12h 08mFrontier
Deal found 4/17$238
Sun 8/1812:49 amONT - GRB
1 stop16h 57mFrontier
Fri 8/238:22 pmGRB - ONT
1 stop12h 08mFrontier
Deal found 4/15$268
Thu 5/231:15 pmONT - GRB
1 stop28h 03mFrontier
Mon 5/279:27 pmGRB - ONT
1 stop17h 57mFrontier
Deal found 4/16$314
Thu 7/2512:49 amONT - GRB
1 stop16h 32mFrontier
Fri 8/28:22 pmGRB - ONT
1 stop12h 08mFrontier
Deal found 4/16$315
Thu 7/412:49 amONT - GRB
1 stop16h 32mFrontier
Wed 7/179:40 amGRB - ONT
1 stop28h 35mFrontier
Deal found 4/16$319
Thu 7/412:49 amONT - GRB
1 stop16h 32mFrontier
Mon 7/228:46 pmGRB - ONT
1 stop28h 53mFrontier
Deal found 4/16$320
Tue 7/301:32 pmONT - GRB
1 stop17h 08mFrontier
Fri 8/28:22 pmGRB - ONT
1 stop12h 08mFrontier
Deal found 4/16$325
Thu 7/412:49 amONT - GRB
1 stop16h 32mFrontier
Wed 7/179:40 amGRB - ONT
1 stop11h 57mFrontier
Deal found 4/16$329
Thu 7/41:10 pmONT - GRB
1 stop28h 11mFrontier
Wed 7/109:40 amGRB - ONT
1 stop28h 35mFrontier
Deal found 4/15$348

Cheap American Airlines flights from Ontario to Green Bay

Explore cheap flight options specifically provided by American Airlines for the route between Ontario and Green Bay. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,192,047 searches. Data last updated April 17, 2024.
Take a gander at the lowest prices we've found on American Airlines flights from Ontario to Green Bay. Deals are refreshing constantly so come back soon for more options.
Mon 7/86:15 amONT - GRB
2 stops13h 33mAmerican Airlines
Thu 7/1111:28 amGRB - ONT
2 stops13h 31mAmerican Airlines
Deal found 4/17$711
Fri 7/197:21 pmONT - GRB
2 stops13h 39mAmerican Airlines
Sun 7/216:20 pmGRB - ONT
2 stops16h 19mAmerican Airlines
Deal found 4/16$734
Thu 7/187:21 pmONT - GRB
2 stops13h 39mAmerican Airlines
Sun 7/216:20 pmGRB - ONT
2 stops16h 19mAmerican Airlines
Deal found 4/16$784
Thu 7/411:59 pmONT - GRB
2 stops12h 21mAmerican Airlines
Wed 7/106:18 amGRB - ONT
2 stops9h 31mAmerican Airlines
Deal found 4/15$786
Tue 6/1111:59 pmONT - GRB
2 stops12h 19mAmerican Airlines
Sun 6/306:07 amGRB - ONT
2 stops11h 44mAmerican Airlines
Deal found 4/17$788
Thu 5/237:40 pmONT - GRB
2 stops13h 26mAmerican Airlines
Mon 5/276:36 pmGRB - ONT
2 stops16h 09mAmerican Airlines
Deal found 4/16$803
Thu 7/411:59 pmONT - GRB
2 stops12h 21mAmerican Airlines
Sat 7/1311:28 amGRB - ONT
2 stops11h 52mAmerican Airlines
Deal found 4/15$805
Fri 7/59:19 amONT - GRB
2 stops10h 29mAmerican Airlines
Mon 7/222:45 pmGRB - ONT
2 stops10h 14mAmerican Airlines
Deal found 4/16$846
Fri 7/59:19 amONT - GRB
2 stops10h 29mAmerican Airlines
Sun 7/72:45 pmGRB - ONT
2 stops11h 25mAmerican Airlines
Deal found 4/16$998

Cheap Ontario to Green Bay flights in April & May 2024

Find cheap flight options from Ontario to Green Bay specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,192,047 searches. Prices were last updated on April 17, 2024.
The lowest fares we've come across on flights traveling from Ontario to Green Bay in April and May 2024. If these deals don't appeal to you, be sure to come back soon for more options.
Wed 4/1712:59 amONT - GRB
1 stop12h 42mFrontier
Tue 4/239:14 pmGRB - ONT
1 stop11h 12mFrontier
Deal found 4/16$198
Wed 4/1712:59 amONT - GRB
1 stop12h 42mFrontier
Sun 4/219:57 pmGRB - ONT
1 stop10h 29mFrontier
Deal found 4/16$248
Thu 4/187:16 amONT - GRB
1 stop6h 25mFrontier
Tue 4/239:14 pmGRB - ONT
1 stop11h 12mFrontier
Deal found 4/16$268
Thu 5/231:15 pmONT - GRB
1 stop28h 03mFrontier
Mon 5/279:27 pmGRB - ONT
1 stop17h 57mFrontier
Deal found 4/16$314
Thu 4/187:16 amONT - GRB
1 stop6h 25mFrontier
Sun 4/219:57 pmGRB - ONT
1 stop10h 29mFrontier
Deal found 4/16$318
Sat 5/412:42 pmONT - GRB
1 stop8h 27mDelta
Tue 5/76:14 amGRB - ONT
2 stops12h 22mDelta
Deal found 4/15$433
Sat 5/412:42 pmONT - GRB
1 stop8h 27mDelta
Tue 5/76:14 amGRB - ONT
2 stops12h 22mDelta
Deal found 4/16$443
Thu 4/1812:35 pmONT - GRB
1 stop8h 34mDelta
Sat 4/205:30 amGRB - ONT
1 stop7h 52mDelta
Deal found 4/16$444
Thu 4/1810:00 pmONT - GRB
2 stops11h 20mDelta
Sat 4/205:30 amGRB - ONT
1 stop7h 52mDelta
Deal found 4/16$481

Ontario to Green Bay 2024 flight deals

Discover exclusive flight deals for travel between Ontario and Green Bay in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,192,047 searches. Data last updated April 17, 2024.
The lowest fares we've come across on flights traveling from Ontario to Green Bay in April and May 2024. If these deals don't appeal to you, be sure to come back soon for more options.
Wed 4/1712:59 amONT - GRB
1 stop12h 42mFrontier
Tue 4/239:14 pmGRB - ONT
1 stop11h 12mFrontier
Deal found 4/16$198
Thu 8/1512:49 amONT - GRB
1 stop16h 32mFrontier
Fri 8/238:22 pmGRB - ONT
1 stop12h 08mFrontier
Deal found 4/17$238
Wed 4/1712:59 amONT - GRB
1 stop12h 42mFrontier
Sun 4/219:57 pmGRB - ONT
1 stop10h 29mFrontier
Deal found 4/16$248
Thu 4/187:16 amONT - GRB
1 stop6h 25mFrontier
Tue 4/239:14 pmGRB - ONT
1 stop11h 12mFrontier
Deal found 4/16$268
Thu 5/231:15 pmONT - GRB
1 stop28h 03mFrontier
Mon 5/279:27 pmGRB - ONT
1 stop17h 57mFrontier
Deal found 4/16$314
Thu 7/2512:49 amONT - GRB
1 stop16h 32mFrontier
Fri 8/28:22 pmGRB - ONT
1 stop12h 08mFrontier
Deal found 4/16$315
Thu 4/187:16 amONT - GRB
1 stop6h 25mFrontier
Sun 4/219:57 pmGRB - ONT
1 stop10h 29mFrontier
Deal found 4/16$318
Thu 7/412:49 amONT - GRB
1 stop16h 32mFrontier
Wed 7/179:40 amGRB - ONT
1 stop28h 35mFrontier
Deal found 4/16$319
Thu 7/412:49 amONT - GRB
1 stop16h 32mFrontier
Mon 7/228:46 pmGRB - ONT
1 stop28h 53mFrontier
Deal found 4/16$320

Ontario to Green Bay flights leaving soon

Find last-minute flight options from Ontario to Green Bay for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,192,047 searches. Data last updated April 17, 2024.
Users seeking a last-minute flight from Ontario to Green Bay should consider booking one of these fares. Users should be sure to double check the price, date, and time of their last-minute flight.
Thu 4/255:15 amONT - GRB
2 stops11h 53mUnited Airlines
Sat 4/276:30 amGRB - ONT
2 stops8h 10mUnited Airlines
Deal found 4/16$545

One-way flights to Green Bay from Ontario

Search for one-way flight options from Ontario to Green Bay. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,192,047 searches. Data last updated April 17, 2024.
Users in need of a one-way flight from Ontario to Green Bay can choose from these deals. Those seeking round-trip flights from Ontario to Green Bay should utilize the search form at the the top of the page.
Wed 5/812:59 amONT - GRB
1 stop12h 36mFrontier
Deal found 4/16$95
Tue 4/307:16 amONT - GRB
1 stop10h 58mFrontier
Deal found 4/17$105
Mon 4/2912:59 amONT - GRB
1 stop17h 15mFrontier
Deal found 4/17$109
Thu 5/97:16 amONT - GRB
1 stop6h 19mFrontier
Deal found 4/16$133
Sat 5/256:42 pmONT - GRB
2 stops13h 58mDelta
Deal found 4/16$204
Thu 6/1311:55 amONT - GRB
1 stop27h 36mFrontier
Deal found 4/17$229
Tue 4/305:15 amONT - GRB
2 stops13h 45mUnited Airlines
Deal found 4/17$284
Sat 5/2512:50 pmONT - GRB
1 stop7h 35mDelta
Deal found 4/16$289
Sat 8/106:35 pmONT - GRB
2 stops13h 36mUnited Airlines
Deal found 4/16$349

Find flights from Ontario to Green Bay within your budget

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, Cheapflights users made 3,192,047 searches. Data last updated April 17, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$238 - $711

Route

Depart

Return

Price

OntarioGreen Bay Austin-Straubel

ONT - GRB

ONTGRB

Ontario

Thu 8/15

1 stop16h 32m

Green Bay Austin-Straubel

Fri 8/23

1 stop12h 08m

$238

OntarioGreen Bay Austin-Straubel

ONT - GRB

ONTGRB

Ontario

Sun 8/18

1 stop16h 57m

Green Bay Austin-Straubel

Fri 8/23

1 stop12h 08m

$268

OntarioGreen Bay Austin-Straubel

ONT - GRB

ONTGRB

Ontario

Thu 5/23

1 stop28h 03m

Green Bay Austin-Straubel

Mon 5/27

1 stop17h 57m

$314

OntarioGreen Bay Austin-Straubel

ONT - GRB

ONTGRB

Ontario

Thu 7/25

1 stop16h 32m

Green Bay Austin-Straubel

Fri 8/2

1 stop12h 08m

$315

OntarioGreen Bay Austin-Straubel

ONT - GRB

ONTGRB

Ontario

Thu 7/4

1 stop16h 32m

Green Bay Austin-Straubel

Wed 7/17

1 stop28h 35m

$319

OntarioGreen Bay Austin-Straubel

ONT - GRB

ONTGRB

Ontario

Mon 8/19

2 stops13h 26m

Green Bay Austin-Straubel

Fri 8/23

2 stops10h 57m

$388

OntarioGreen Bay Austin-Straubel

ONT - GRB

ONTGRB

Ontario

Sat 5/4

1 stop8h 27m

Green Bay Austin-Straubel

Tue 5/7

2 stops12h 22m

$433

OntarioGreen Bay Austin-Straubel

ONT - GRB

ONTGRB

Ontario

Sat 5/4

1 stop8h 27m

Green Bay Austin-Straubel

Tue 5/7

2 stops12h 22m

$443

OntarioGreen Bay Austin-Straubel

ONT - GRB

ONTGRB

Ontario

Mon 7/8

2 stops13h 33m

Green Bay Austin-Straubel

Thu 7/11

2 stops13h 31m

$711

Flights are sorted by cheapest first

Deals found on 4/17

When is the cheapest time to fly from Ontario to Green Bay?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Green Bay. Price data was last updated on April 14, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Ontario to Green Bay flight should consider departing on Monday mornings when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Green Bay by month

Plan your trip from Ontario to Green Bay by taking into account the cheapest months to travel. The average price of a one-way flight from Ontario to Green Bay is currently $200 while a round-trip flight costs $381. Price data was last updated on April 14, 2024.

Currently, February is the cheapest month in which you can book a flight from Ontario to Green Bay (average of $334). Flying from Ontario to Green Bay in June is currently the most expensive (average of $534). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

$354

February

$334

March

$354

April

$387

May

$481

June

$534

July

$496

August

$435

September

$397

October

$469

November

$438

December

$477

Temperature and rainfall in Green Bay by month

Plan your trip to Green Bay by taking into account the average temperature and rainfall totals by month.

GRB

Temperature

15.8 - 69.8 °F

Reviews of airlines servicing Green Bay

Get insights into the airlines that provide service to Green Bay. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Green Bay. Reviews last updated April 17, 2024.
Read through reviews of airlines operating flights from Ontario to Green Bay, such as Frontier, American Airlines and Delta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
11,136 reviews

Overall

8.1

Entertainment

8.0

Food

7.5

Crew

8.6

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

8.1
Very good
11,136 reviews
8.1
Very good
11,136 reviews

Overall

8.1

Entertainment

8.0

Food

7.5

Crew

8.6

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

7.4
Good
11,346 reviews
8.1
Very good
11,136 reviews

Overall

8.1

Entertainment

8.0

Food

7.5

Crew

8.6

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

7.3
Good
14,973 reviews
8.1
Very good
11,136 reviews

Overall

8.1

Entertainment

8.0

Food

7.5

Crew

8.6

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

6.3
Okay
4,175 reviews
8.1
Very good
11,136 reviews

Overall

8.1

Entertainment

8.0

Food

7.5

Crew

8.6

Comfort

7.9

Boarding

8.2

Reviews

1 / 10

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

Related info for your journey

Find useful and relevant information for your journey from Ontario to Green Bay. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • Can I find flights from Ontario to Green Bay for under $300 on Cheapflights?

    Yes, there are multiple flights from Ontario to Green Bay for under $300. The cheapest flight booked recently is on Frontier for just $238, but on average you can expect to pay $352.

  • Are there last-minute flights available from Ontario to Green Bay for under $600?

    There are currently 1+ open flights from Ontario to Green Bay within the next 7 days for less than $600.

  • What are the cheapest airlines flying from Ontario to Green Bay round-trip?

    Frontier, at $238, was found to be the cheapest airline from Ontario to Green Bay.Alternate airlines to your destination round-trip include United Airlines and Delta. You may be able to fly from Ontario to Green Bay for 58% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Ontario to Green Bay one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $95. Users have also found prices from $204 and $284 on Delta and United Airlines, respectively.

  • What are the most popular airlines that fly from Ontario to Green Bay?

  • What does ONT to GRB mean?

    Ontario Airport is ONT and Green Bay Austin-Straubel Airport is GRB. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service.

  • Can I find deals for flights from Ontario to Green Bay that include extra baggage allowance?

    The amount of baggage you can bring on your Ontario to Green Bay flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Ontario to Green Bay with specific airlines?

    Yes, Cheapflights allows you to browse and filter Ontario to Green Bay flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Ontario to Green Bay that include hotel bookings?

    Yes. In addition to deals on Ontario to Green Bay flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Green Bay?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Green Bay.

  • Can I find deals for business class flights from Ontario to Green Bay?

    Yes. Cheapflights offers flight deals from Ontario to Green Bay by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Ontario to Green Bay that allow pets onboard?

    Many airlines flying from Ontario to Green Bay offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Ontario to Green Bay?

    Yes, you can often find last-minute deals on Ontario to Green Bay flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Ontario to Green Bay flight deals updated?

    The Ontario to Green Bay flight deals you see on this page were last updated on 4/17.

See more FAQs

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Alternative routes for Ontario to Green Bay
See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from Ontario to Green Bay

Discover the top 4 airlines that operate flights from Ontario to Green Bay. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 3,192,047 searches. Data last updated April 17, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$179Average$265FlexibilityNo cancel feeOn-time62%
Search Frontier flights
United AirlinesCheapest$394Average$684FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapest$408Average$642FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapest$427Average$661FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Search flights from Ontario to Green Bay by cabin class

Find flights from Ontario to Green Bay, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ontario to Green Bay?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Green Bay from Ontario today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Ontario to Green Bay?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Ontario to Green Bay for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Ontario to Green Bay with no change fees?

Need flexible booking options for your flight to Green Bay from Ontario? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Ontario to Green Bay become cheaper?

Of course! You can now track prices for flights from Ontario to Green Bay and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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