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Cheap flights from Ontario (ONT) to Oshkosh, WI from $138

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 5/26. 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 — MKE
May 9 — May 161
From?
To?
Thu 5/9
Thu 5/16
1 adult, Economy
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Cheap flight deals from Ontario to Oshkosh

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Oshkosh (OS9). 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 May 4, 2024.

Popular in

May

Cheapest in

September

Average price

$994

Round-trip from

$321
High demand for flights, 40% potential price rise
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Best time to find cheap flights, 46% potential price drop
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Average for round-trip flights in May 2024
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From Ontario to Oshkosh
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How far in advance should I book a flight from Ontario to Oshkosh?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 49 days in advance, which can save you up to 179% on flights from Ontario to Oshkosh compared to booking the week you need them. Waiting 49 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $547. For sooner than that we have options available in the next 3 days from $687.

What is the cheapest month to fly from Ontario to Oshkosh?

Our data shows that May tends to be the cheapest month to fly to Oshkosh from Ontario. Users have commonly found prices around $587 for the month, but tickets can be as low as $396. Due to multiple factors, prepare for potentially higher prices in November.

When is the cheapest time to fly from Ontario to Oshkosh (ONT - OS9)?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Oshkosh as you normally would.

Cheap American Airlines flights from Ontario to Oshkosh

Explore cheap flight options specifically provided by American Airlines for the route between Ontario and Oshkosh. 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 2,795,183 searches. Data last updated May 4, 2024.
Take a peek at the cheapest American Airlines flights we've detected traveling from Ontario to Oshkosh. Make sure to check back often as deals are often changing.
Wed 5/156:45 amONT - ATW
2 stops10h 58mAmerican Airlines
Fri 5/174:33 pmATW - ONT
2 stops9h 23mAmerican Airlines
Deal found 5/2$428
Tue 5/2811:59 pmONT - ATW
2 stops14h 01mAmerican Airlines
Sat 6/155:40 amATW - ONT
2 stops10h 08mAmerican Airlines
Deal found 5/4$468
Tue 7/212:49 pmONT - ATW
1 stop7h 15mAmerican Airlines
Sat 7/66:45 amATW - ONT
1 stop9h 04mAmerican Airlines
Deal found 5/3$758
Sun 6/26:45 amONT - ATW
2 stops7h 15mAmerican Airlines
Sun 6/94:17 pmATW - ONT
1 stop8h 42mAmerican Airlines
Deal found 5/3$761
Sun 6/26:45 amONT - ATW
2 stops7h 15mAmerican Airlines
Sun 6/97:56 amATW - ONT
2 stops13h 01mAmerican Airlines
Deal found 5/3$768
Fri 5/2411:59 pmONT - ATW
2 stops9h 01mAmerican Airlines
Sun 5/269:20 amATW - ONT
2 stops11h 39mAmerican Airlines
Deal found 5/3$776
Thu 5/2312:59 amONT - ATW
2 stops8h 01mAmerican Airlines
Sun 5/269:20 amATW - ONT
2 stops11h 39mAmerican Airlines
Deal found 5/3$816
Fri 7/510:48 amONT - ATW
1 stop9h 22mAmerican Airlines
Fri 7/124:18 pmATW - ONT
1 stop8h 42mAmerican Airlines
Deal found 5/2$1,176
Sat 7/612:43 pmONT - ATW
1 stop7h 27mAmerican Airlines
Sat 7/136:45 amATW - ONT
1 stop7h 06mAmerican Airlines
Deal found 5/2$1,228

Cheap Delta flights from Ontario to Oshkosh

Explore cheap flight options specifically provided by Delta for the route between Ontario and Oshkosh. 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 2,795,183 searches. Data last updated May 4, 2024.
Browse through some of the cheapest Delta flights traveling from Ontario to Oshkosh. Check back soon if you're not seeing flights that suit your needs.
Fri 5/2412:50 pmONT - ATW
1 stop7h 30mDelta
Sun 5/266:25 amATW - ONT
2 stops7h 48mDelta
Deal found 5/3$443
Sat 9/1412:45 pmONT - ATW
1 stop7h 12mDelta
Wed 9/185:45 amATW - ONT
1 stop7h 37mDelta
Deal found 5/2$492
Fri 5/2412:50 pmONT - ATW
1 stop7h 30mDelta
Sun 5/265:28 amATW - ONT
1 stop8h 12mDelta
Deal found 5/3$498
Fri 5/245:45 amONT - ATW
2 stops8h 50mDelta
Sun 5/266:25 amATW - ONT
2 stops7h 48mDelta
Deal found 5/3$713
Wed 5/1512:50 pmONT - ATW
1 stop7h 30mDelta
Fri 5/175:28 amATW - ONT
1 stop8h 12mDelta
Deal found 5/2$728
Sat 7/65:35 amONT - ATW
2 stops9h 32mDelta
Fri 7/124:17 pmATW - ONT
2 stops9h 26mDelta
Deal found 5/2$1,598

Cheap Ontario to Oshkosh flights in May & June 2024

Find cheap flight options from Ontario to Oshkosh specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,795,183 searches. Prices were last updated on May 4, 2024.
The lowest fares we've come across on flights traveling from Ontario to Oshkosh in May and June 2024. For more flight deals, be sure to check back very soon.
Wed 5/156:45 amONT - ATW
2 stops10h 58mAmerican Airlines
Fri 5/174:33 pmATW - ONT
2 stops9h 23mAmerican Airlines
Deal found 5/2$428
Fri 5/2412:50 pmONT - ATW
1 stop7h 30mDelta
Sun 5/266:25 amATW - ONT
2 stops7h 48mDelta
Deal found 5/3$443
Tue 5/285:15 amONT - ATW
1 stop13h 51mUnited Airlines
Sat 6/151:00 pmATW - ONT
2 stops11h 27mUnited Airlines
Deal found 5/4$462
Tue 5/2811:59 pmONT - ATW
2 stops14h 01mAmerican Airlines
Sat 6/155:40 amATW - ONT
2 stops10h 08mAmerican Airlines
Deal found 5/4$468
Sun 5/56:00 amONT - ATW
2 stops8h 40mUnited Airlines
Fri 5/101:00 pmATW - ONT
2 stops12h 04mUnited Airlines
Deal found 5/4$498
Sat 5/116:00 amONT - ATW
2 stops13h 01mUnited Airlines
Wed 5/158:35 amATW - ONT
1 stop6h 05mUnited Airlines
Deal found 5/3$518
Tue 5/285:15 amONT - ATW
1 stop13h 51mUnited Airlines
Sat 6/158:45 amATW - ONT
1 stop13h 53mUnited Airlines
Deal found 5/4$531
Sun 5/56:00 amONT - ATW
2 stops8h 40mUnited Airlines
Fri 5/108:35 amATW - ONT
1 stop6h 05mUnited Airlines
Deal found 5/4$583
Wed 5/155:15 amONT - ATW
1 stop13h 46mUnited Airlines
Fri 5/175:27 pmATW - ONT
2 stops29h 26mUnited Airlines
Deal found 5/2$596

Ontario to Oshkosh 2024 flight deals

Discover exclusive flight deals for travel between Ontario and Oshkosh in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,795,183 searches. Data last updated May 4, 2024.
The lowest fares we've come across on flights traveling from Ontario to Oshkosh in May and June 2024. For more flight deals, be sure to check back very soon.
Wed 5/156:45 amONT - ATW
2 stops10h 58mAmerican Airlines
Fri 5/174:33 pmATW - ONT
2 stops9h 23mAmerican Airlines
Deal found 5/2$428
Fri 5/2412:50 pmONT - ATW
1 stop7h 30mDelta
Sun 5/266:25 amATW - ONT
2 stops7h 48mDelta
Deal found 5/3$443
Tue 5/285:15 amONT - ATW
1 stop13h 51mUnited Airlines
Sat 6/151:00 pmATW - ONT
2 stops11h 27mUnited Airlines
Deal found 5/4$462
Tue 5/2811:59 pmONT - ATW
2 stops14h 01mAmerican Airlines
Sat 6/155:40 amATW - ONT
2 stops10h 08mAmerican Airlines
Deal found 5/4$468
Sat 9/1412:45 pmONT - ATW
1 stop7h 12mDelta
Wed 9/185:45 amATW - ONT
1 stop7h 37mDelta
Deal found 5/2$492
Sun 5/56:00 amONT - ATW
2 stops8h 40mUnited Airlines
Fri 5/101:00 pmATW - ONT
2 stops12h 04mUnited Airlines
Deal found 5/4$498
Sat 5/116:00 amONT - ATW
2 stops13h 01mUnited Airlines
Wed 5/158:35 amATW - ONT
1 stop6h 05mUnited Airlines
Deal found 5/3$518
Tue 5/285:15 amONT - ATW
1 stop13h 51mUnited Airlines
Sat 6/158:45 amATW - ONT
1 stop13h 53mUnited Airlines
Deal found 5/4$531
Sat 9/146:00 amONT - ATW
2 stops11h 00mUnited Airlines
Wed 9/185:25 pmATW - ONT
2 stops33h 20mUnited Airlines
Deal found 5/2$556

Ontario to Oshkosh flights leaving soon

Find last-minute flight options from Ontario to Oshkosh 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 2,795,183 searches. Data last updated May 4, 2024.
Consider one of these great deals we found on last-minute flights from Ontario to Oshkosh. Users should be sure to double check the price, date, and time of their last-minute flight.
Sat 5/116:00 amONT - ATW
2 stops13h 01mUnited Airlines
Wed 5/158:35 amATW - ONT
1 stop6h 05mUnited Airlines
Deal found 5/3$518
Sat 5/1111:59 pmONT - ATW
2 stops9h 01mAmerican Airlines
Wed 5/157:58 amATW - ONT
2 stops13h 01mAmerican Airlines
Deal found 5/3$776
Sat 5/115:15 amONT - ATW
1 stop13h 46mUnited Airlines
Wed 5/158:35 amATW - ONT
1 stop14h 18mUnited Airlines
Deal found 5/3$1,046

One-way flights to Oshkosh from Ontario

Search for one-way flight options from Ontario to Oshkosh. 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 2,795,183 searches. Data last updated May 4, 2024.
Users traveling one-way from Ontario to Oshkosh can select one of these great deals. For those needing a return trip from Ontario, there is a search form available above.
Sun 5/2612:50 pmONT - ATW
1 stop7h 30mDelta
Deal found 5/4$138
Sat 5/2512:50 pmONT - ATW
1 stop7h 30mDelta
Deal found 5/4$181
Thu 6/137:05 amONT - ATW
2 stops12h 10mDelta
Deal found 5/4$186
Sat 5/1812:50 pmONT - ATW
1 stop7h 30mDelta
Deal found 5/3$229
Tue 5/146:00 amONT - ATW
2 stops8h 40mUnited Airlines
Deal found 5/4$269
Wed 8/145:20 amONT - ATW
2 stops9h 36mUnited Airlines
Deal found 5/2$304
Mon 5/275:45 amONT - ATW
2 stops7h 46mDelta
Deal found 5/4$324
Wed 8/141:30 pmONT - ATW
1 stop5h 43mUnited Airlines
Deal found 5/2$329
Wed 5/295:45 amONT - ATW
2 stops7h 46mDelta
Deal found 5/4$354

Find flights from Ontario to Oshkosh within your budget

Customize your flight search to find flights from Ontario to Oshkosh 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 2,795,183 searches. Data last updated May 4, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$428 - $583

Route

Depart

Return

Price

OntarioAppleton Intl

ONT - ATW

ONTATW

Ontario

Wed 5/15

2 stops10h 58m

Appleton Intl

Fri 5/17

2 stops9h 23m

$428

OntarioAppleton Intl

ONT - ATW

ONTATW

Ontario

Fri 5/24

1 stop7h 30m

Appleton Intl

Sun 5/26

2 stops7h 48m

$443

OntarioAppleton Intl

ONT - ATW

ONTATW

Ontario

Tue 5/28

1 stop13h 51m

Appleton Intl

Sat 6/15

2 stops11h 27m

$462

OntarioAppleton Intl

ONT - ATW

ONTATW

Ontario

Tue 5/28

2 stops14h 01m

Appleton Intl

Sat 6/15

2 stops10h 08m

$468

OntarioAppleton Intl

ONT - ATW

ONTATW

Ontario

Sat 9/14

1 stop7h 12m

Appleton Intl

Wed 9/18

1 stop7h 37m

$492

OntarioAppleton Intl

ONT - ATW

ONTATW

Ontario

Fri 5/24

1 stop7h 30m

Appleton Intl

Sun 5/26

1 stop8h 12m

$498

OntarioAppleton Intl

ONT - ATW

ONTATW

Ontario

Tue 5/28

1 stop13h 51m

Appleton Intl

Sat 6/15

1 stop13h 53m

$531

OntarioAppleton Intl

ONT - ATW

ONTATW

Ontario

Sat 9/14

2 stops11h 00m

Appleton Intl

Wed 9/18

2 stops33h 20m

$556

OntarioAppleton Intl

ONT - ATW

ONTATW

Ontario

Sat 9/14

2 stops11h 00m

Appleton Intl

Wed 9/18

1 stop5h 47m

$583

Flights are sorted by cheapest first

Deals found on 5/2

When is the cheapest time to fly from Ontario to Oshkosh?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Oshkosh. Price data was last updated on April 28, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Ontario to Oshkosh flight should consider departing on Saturday at noon when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Oshkosh by month

Plan your trip from Ontario to Oshkosh by taking into account the cheapest months to travel. The average price of a one-way flight from Ontario to Oshkosh is currently $257 while a round-trip flight costs $496. Price data was last updated on April 28, 2024.

Currently, December is the cheapest month in which you can book a flight from Ontario to Oshkosh (average of $263). Flying from Ontario to Oshkosh in June is currently the most expensive (average of $379). 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

$270

February

$277

March

$285

April

$306

May

$353

June

$379

July

$371

August

$341

September

$316

October

$296

November

$296

December

$263

Temperature and rainfall in Oshkosh by month

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

ATW

Temperature

17.6 - 71.6 °F

Reviews of airlines servicing Oshkosh

Get insights into the airlines that provide service to Oshkosh. 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 Oshkosh. Reviews last updated May 4, 2024.
Get a feel of what it's like to fly with American Airlines, Delta and United Airlines from Ontario to Oshkosh by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.1
Very good
10,838 reviews
Check prices

Entertainment

8.0

Boarding

8.2

Crew

8.6

Comfort

7.9

Food

7.4

Overall

8.1

Reviews

1 / 10

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

Delta
8.1
Very good
10,838 reviews
Delta
8.1
Very good
10,838 reviews
Check prices

Entertainment

8.0

Boarding

8.2

Crew

8.6

Comfort

7.9

Food

7.4

Overall

8.1

Reviews

1 / 10

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

United Airlines
7.4
Good
11,125 reviews
Delta
8.1
Very good
10,838 reviews
Check prices

Entertainment

8.0

Boarding

8.2

Crew

8.6

Comfort

7.9

Food

7.4

Overall

8.1

Reviews

1 / 10

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

American Airlines
7.3
Good
14,728 reviews
Delta
8.1
Very good
10,838 reviews
Check prices

Entertainment

8.0

Boarding

8.2

Crew

8.6

Comfort

7.9

Food

7.4

Overall

8.1

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 Oshkosh. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Oshkosh?

    Located just 3.1 mi from the city center, Ontario is the airport most travelers will use when flying to Oshkosh from Ontario. Booking flights from Ontario (ONT) to Oshkosh should be relatively easy as there are 0 daily outbound flights to Oshkosh from 5 different airlines.

  • Can I find flights from Ontario to Oshkosh for under $500 on Cheapflights?

    Yes, there are multiple flights from Ontario to Oshkosh for under $500. The cheapest flight booked recently is on American Airlines for just $428, but on average you can expect to pay $598.

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

    There are currently 3+ open flights from Ontario to Oshkosh within the next 7 days for less than $600.

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

    $138 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on United Airlines and American Airlines, with prices starting from $269 and $379, respectively.

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

    The most popular airlines flying from Ontario to Oshkosh are American Airlines, Delta and Frontier. Something to consider prior to booking your flight.

  • What does ONT to MKE mean?

    ONT stands for Ontario Airport, while MKE stands for Milwaukee-Mitchell Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry. Madison Truax Field Airport (MSN), Appleton Intl Airport (ATW), Green Bay Austin-Straubel Airport (GRB), Wausau Central Wisconsin Airport (CWA) are other airports near this flight route and their unique identifiers/IATA codes.

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

    The amount of baggage you can bring on your Ontario to Oshkosh 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 Oshkosh with specific airlines?

    Yes, Cheapflights allows you to browse and filter Ontario to Oshkosh 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 Oshkosh that include hotel bookings?

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

  • How can I find direct flights from Ontario to Oshkosh?

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

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

    Yes. Cheapflights offers flight deals from Ontario to Oshkosh 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 Oshkosh that allow pets onboard?

    Many airlines flying from Ontario to Oshkosh 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 Oshkosh?

    Yes, you can often find last-minute deals on Ontario to Oshkosh 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 Oshkosh flight deals updated?

    The Ontario to Oshkosh flight deals you see on this page were last updated on 5/4.

See more FAQs

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Top 5 airlines flying from Ontario to Oshkosh

Discover the top 5 airlines that operate flights from Ontario to Oshkosh. 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 2,795,183 searches. Data last updated May 4, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$131Average$226FlexibilityNo cancel feeOn-time62%
Search Frontier flights
Spirit AirlinesCheapest$185Average$303FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
United AirlinesCheapest$263Average$655FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapest$278Average$517FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapest$298Average$566FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
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Search flights from Ontario to Oshkosh by cabin class

Find flights from Ontario to Oshkosh, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

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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 Oshkosh?

Cheapflights helps you search for flights from Ontario to Oshkosh via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Ontario to Oshkosh.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Ontario to Oshkosh, users can toggle the no change fees filter when performing a flight search.

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

Yes! Start tracking prices for Ontario to Oshkosh flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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