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Cheap flights from Ontario (ONT) to Oshkosh, WI from $343

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/5. 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
Jun 4 — Jun 111
From?
To?
Tue 6/4
Tue 6/11
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 30, 2024.

Popular in

May

Cheapest in

September

Average price

$921

Round-trip from

$321
High demand for flights, 36% potential price rise
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Best time to find cheap flights, 45% 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 69% 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 $429. For sooner than that we have options available in the next 3 days from $487.

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

Our data shows that February tends to be the cheapest month to fly to Oshkosh from Ontario. Users have commonly found prices around $516 for the month, but tickets can be as low as $324. Due to multiple factors, prepare for potentially higher prices in October.

What is the cheapest time of day to fly from ONT to 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 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 2,784,634 searches. Data last updated May 30, 2024.
Take a peek at the cheapest Delta flights we've detected traveling from Ontario to Oshkosh. Make sure to check back often as deals are often changing.
Fri 7/511:30 amONT - ATW
1 stop8h 32mDelta
Wed 7/1012:14 pmATW - ONT
2 stops12h 43mDelta
Deal found 5/29$343
Fri 7/55:35 amONT - ATW
2 stops14h 27mDelta
Wed 7/1012:14 pmATW - ONT
2 stops12h 43mDelta
Deal found 5/29$553

Cheap United Airlines flights from Ontario to Oshkosh

Explore cheap flight options specifically provided by United 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 2,784,634 searches. Data last updated May 30, 2024.
Browse through some of the cheapest United Airlines flights traveling from Ontario to Oshkosh. Check back soon if you're not seeing flights that suit your needs.
Sat 9/286:00 amONT - ATW
2 stops11h 01mUnited Airlines
Tue 10/11:05 pmATW - ONT
2 stops10h 41mUnited Airlines
Deal found 5/29$383
Thu 6/206:25 pmONT - ATW
1 stop24h 41mUnited Airlines
Thu 7/48:50 amATW - ONT
1 stop5h 43mUnited Airlines
Deal found 5/29$512
Thu 6/206:25 pmONT - ATW
1 stop24h 41mUnited Airlines
Thu 7/41:10 pmATW - ONT
2 stops10h 01mUnited Airlines
Deal found 5/29$517
Fri 7/56:00 amONT - ATW
2 stops11h 17mUnited Airlines
Wed 7/106:47 amATW - ONT
2 stops12h 41mUnited Airlines
Deal found 5/29$588
Fri 9/276:00 amONT - ATW
2 stops11h 01mUnited Airlines
Mon 9/301:05 pmATW - ONT
2 stops10h 41mUnited Airlines
Deal found 5/30$633
Tue 7/26:25 pmONT - ATW
2 stops15h 37mUnited Airlines
Sat 7/68:50 amATW - ONT
1 stop10h 38mUnited Airlines
Deal found 5/29$635
Mon 9/166:25 pmONT - ATW
1 stop24h 32mUnited Airlines
Sat 9/218:45 amATW - ONT
1 stop5h 47mUnited Airlines
Deal found 5/29$642
Sun 6/96:25 pmONT - ATW
1 stop24h 41mUnited Airlines
Sun 6/168:45 amATW - ONT
1 stop10h 43mUnited Airlines
Deal found 5/28$645
Sun 6/95:15 amONT - ATW
1 stop13h 51mUnited Airlines
Sun 6/165:22 pmATW - ONT
2 stops29h 26mUnited Airlines
Deal found 5/28$660

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 2,784,634 searches. Prices were last updated on May 30, 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.
Thu 5/301:29 pmONT - ATW
1 stop5h 37mUnited Airlines
Fri 5/318:45 amATW - ONT
1 stop5h 48mUnited Airlines
Deal found 5/29$380
Fri 5/316:00 amONT - ATW
2 stops13h 06mUnited Airlines
Mon 6/31:00 pmATW - ONT
2 stops11h 27mUnited Airlines
Deal found 5/28$498
Thu 5/306:00 amONT - ATW
2 stops13h 06mUnited Airlines
Fri 5/318:45 amATW - ONT
1 stop5h 48mUnited Airlines
Deal found 5/29$509
Thu 6/206:25 pmONT - ATW
1 stop24h 41mUnited Airlines
Thu 7/48:50 amATW - ONT
1 stop5h 43mUnited Airlines
Deal found 5/29$512
Thu 6/206:25 pmONT - ATW
1 stop24h 41mUnited Airlines
Thu 7/41:10 pmATW - ONT
2 stops10h 01mUnited Airlines
Deal found 5/29$517
Fri 5/311:29 pmONT - ATW
1 stop5h 37mUnited Airlines
Mon 6/31:00 pmATW - ONT
2 stops11h 27mUnited Airlines
Deal found 5/28$558
Sun 6/96:25 pmONT - ATW
1 stop24h 41mUnited Airlines
Sun 6/168:45 amATW - ONT
1 stop10h 43mUnited Airlines
Deal found 5/28$645
Sun 6/95:15 amONT - ATW
1 stop13h 51mUnited Airlines
Sun 6/165:22 pmATW - ONT
2 stops29h 26mUnited Airlines
Deal found 5/28$660
Thu 5/306:00 amONT - ATW
2 stops13h 06mUnited Airlines
Fri 5/311:00 pmATW - ONT
2 stops9h 48mUnited Airlines
Deal found 5/29$678

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 2,784,634 searches. Data last updated May 30, 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.
Fri 7/511:30 amONT - ATW
1 stop8h 32mDelta
Wed 7/1012:14 pmATW - ONT
2 stops12h 43mDelta
Deal found 5/29$343
Thu 5/301:29 pmONT - ATW
1 stop5h 37mUnited Airlines
Fri 5/318:45 amATW - ONT
1 stop5h 48mUnited Airlines
Deal found 5/29$380
Sat 9/286:00 amONT - ATW
2 stops11h 01mUnited Airlines
Tue 10/11:05 pmATW - ONT
2 stops10h 41mUnited Airlines
Deal found 5/29$383
Fri 5/316:00 amONT - ATW
2 stops13h 06mUnited Airlines
Mon 6/31:00 pmATW - ONT
2 stops11h 27mUnited Airlines
Deal found 5/28$498
Thu 5/306:00 amONT - ATW
2 stops13h 06mUnited Airlines
Fri 5/318:45 amATW - ONT
1 stop5h 48mUnited Airlines
Deal found 5/29$509
Thu 6/206:25 pmONT - ATW
1 stop24h 41mUnited Airlines
Thu 7/48:50 amATW - ONT
1 stop5h 43mUnited Airlines
Deal found 5/29$512
Thu 6/206:25 pmONT - ATW
1 stop24h 41mUnited Airlines
Thu 7/41:10 pmATW - ONT
2 stops10h 01mUnited Airlines
Deal found 5/29$517
Fri 7/512:43 pmONT - ATW
1 stop7h 27mAmerican Airlines
Wed 7/104:18 pmATW - ONT
1 stop8h 42mAmerican Airlines
Deal found 5/29$532
Fri 7/55:35 amONT - ATW
2 stops14h 27mDelta
Wed 7/1012:14 pmATW - ONT
2 stops12h 43mDelta
Deal found 5/29$553

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 2,784,634 searches. Data last updated May 30, 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.
Sun 6/96:25 pmONT - ATW
1 stop24h 41mUnited Airlines
Sun 6/168:45 amATW - ONT
1 stop10h 43mUnited Airlines
Deal found 5/28$645
Sun 6/95:15 amONT - ATW
1 stop13h 51mUnited Airlines
Sun 6/165:22 pmATW - ONT
2 stops29h 26mUnited Airlines
Deal found 5/28$660
Sun 6/96:25 pmONT - ATW
2 stops24h 26mUnited Airlines
Sun 6/165:22 pmATW - ONT
2 stops29h 26mUnited Airlines
Deal found 5/28$710

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 2,784,634 searches. Data last updated May 30, 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.
Wed 7/105:10 amONT - ATW
2 stops8h 01mUnited Airlines
Deal found 5/28$359
Sun 6/306:25 pmONT - ATW
1 stop24h 48mUnited Airlines
Deal found 5/28$383
Fri 7/1211:59 pmONT - ATW
2 stops9h 02mAmerican Airlines
Deal found 5/28$384
Thu 7/116:00 amONT - ATW
2 stops13h 16mDelta
Deal found 5/28$667
Sun 6/309:24 amONT - ATW
2 stops10h 40mAmerican Airlines
Deal found 5/28$679
Wed 7/106:05 amONT - ATW
1 stop14h 05mAmerican Airlines
Deal found 5/28$1,651

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 2,784,634 searches. Data last updated May 30, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$343 - $683

Route

Depart

Return

Price

OntarioAppleton Intl

ONT - ATW

ONTATW

Ontario

Fri 7/5

1 stop8h 32m

Appleton Intl

Wed 7/10

2 stops12h 43m

$343

OntarioAppleton Intl

ONT - ATW

ONTATW

Ontario

Sat 9/28

2 stops11h 01m

Appleton Intl

Tue 10/1

2 stops10h 41m

$383

OntarioAppleton Intl

ONT - ATW

ONTATW

Ontario

Thu 6/20

1 stop24h 41m

Appleton Intl

Thu 7/4

1 stop5h 43m

$512

OntarioAppleton Intl

ONT - ATW

ONTATW

Ontario

Thu 6/20

1 stop24h 41m

Appleton Intl

Thu 7/4

2 stops10h 01m

$517

OntarioAppleton Intl

ONT - ATW

ONTATW

Ontario

Fri 7/5

1 stop7h 27m

Appleton Intl

Wed 7/10

1 stop8h 42m

$532

OntarioAppleton Intl

ONT - ATW

ONTATW

Ontario

Fri 7/5

2 stops14h 27m

Appleton Intl

Wed 7/10

2 stops12h 43m

$553

OntarioAppleton Intl

ONT - ATW

ONTATW

Ontario

Fri 7/5

2 stops11h 17m

Appleton Intl

Wed 7/10

2 stops12h 41m

$588

OntarioAppleton Intl

ONT - ATW

ONTATW

Ontario

Sat 9/28

1 stop7h 17m

Appleton Intl

Tue 10/1

2 stops12h 18m

$653

OntarioAppleton Intl

ONT - ATW

ONTATW

Ontario

Thu 8/8

2 stops13h 34m

Appleton Intl

Sun 8/11

1 stop9h 03m

$683

Flights are sorted by cheapest first

Deals found on 5/29

What is the cheapest day 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 May 26, 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

Best time to book a flight from Ontario to Oshkosh

Have a flexible travel schedule? Discover the best time to fly to Oshkosh from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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 30, 2024.
Get a feel of what it's like to fly with Delta, United Airlines and American 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
8.0
Very good
10,457 reviews
Check prices

Food

7.4

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

8.0

Comfort

7.9

Reviews

1 / 10

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

Delta
8.0
Very good
10,457 reviews
Delta
8.0
Very good
10,457 reviews
Check prices

Food

7.4

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

8.0

Comfort

7.9

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
10,777 reviews
Delta
8.0
Very good
10,457 reviews
Check prices

Food

7.4

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

8.0

Comfort

7.9

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
14,284 reviews
Delta
8.0
Very good
10,457 reviews
Check prices

Food

7.4

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

8.0

Comfort

7.9

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 $400 on Cheapflights?

    Yes, there are multiple flights from Ontario to Oshkosh for under $400. The cheapest flight booked recently is on Delta for just $343, but on average you can expect to pay $608.

  • Are there last-minute flights available from Ontario to Oshkosh for under $700?

    There are currently 3+ open flights from Ontario to Oshkosh within the next 7 days for less than $700.

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

    $359 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on American Airlines and Delta, with prices starting from $384 and $667, respectively.

  • 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 5/29.

  • 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 is the cheapest month to book a flight from Ontario to Oshkosh?

    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 $375). 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.

See more FAQs

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

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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 2,784,634 searches. Data last updated May 30, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$131Average$231FlexibilityNo cancel feeOn-time62%
Search Frontier flights
Spirit AirlinesCheapest$185Average$303FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
United AirlinesCheapest$263Average$615FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapest$280Average$492FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapest$298Average$556FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
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Ontario to Osaka flights

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.
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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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