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$219+ Cheap flights from Appleton to Ontario (ATW - ONT)

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 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
ATW — ONT
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Appleton to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Appleton (ATW) to Ontario (ONT). 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 September 17, 2025.

Round-trip from

$289
(United Airlines)

One-way from

$219
(American Airlines)

Popular in

March

Cheapest in

May

Average price

$541
From Appleton Intl to Ontario
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One-way flight from Appleton Intl to Ontario
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Highest demand for flights based on searches. 18% potential increase in price ($111 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Appleton to Ontario

Cheapest flights from Appleton to Ontario
Explore the most affordable flight options available from Appleton to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/152:32 pmATW - ONT
1 stop9h 59mUnited Airlines
Sat 1/177:00 amONT - ATW
1 stop7h 48mUnited Airlines
Deal found 9/14$289
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/512:05 pmATW - ONT
2 stops11h 15mDelta
Sun 11/96:00 amONT - ATW
2 stops9h 22mDelta
Deal found 9/15$299
This Delta deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/512:05 pmATW - ONT
2 stops11h 15mDelta
Tue 11/1111:45 amONT - ATW
1 stop8h 23mDelta
Deal found 9/17$344
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/308:20 amATW - ONT
2 stops8h 42mUnited Airlines
Sat 10/45:05 amONT - ATW
2 stops9h 44mUnited Airlines
Deal found 9/15$349
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/222:45 pmATW - ONT
1 stop9h 45mUnited Airlines
Sat 10/257:02 amONT - ATW
1 stop7h 47mUnited Airlines
Deal found 9/16$379
This Delta deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/412:05 pmATW - ONT
2 stops11h 15mDelta
Sat 11/811:36 amONT - ATW
1 stop7h 59mDelta
Deal found 9/17$394
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/75:21 pmATW - ONT
1 stop7h 10mUnited Airlines
Sun 11/167:00 amONT - ATW
1 stop7h 42mUnited Airlines
Deal found 9/16$404
This United Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/42:32 pmATW - ONT
2 stops10h 19mUnited Airlines
Tue 11/117:00 amONT - ATW
1 stop7h 42mUnited Airlines
Deal found 9/17$409

Cheapflights Fare Finder

 
Customize your flight search to find flights from Appleton to Ontario 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 2,558,603 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Appleton to Ontario that are best for you.

Fly from

Appleton

Fly to

Ontario

Route

Depart

Return

Price

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Sat 11/15

2:32 pm-10:31 pm

1 stop9h 59m

Ontario

Sat 1/17

7:00 am-4:48 pm

1 stop7h 48m

$289

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Wed 11/5

12:05 pm-9:20 pm

2 stops11h 15m

Ontario

Sun 11/9

6:00 am-5:22 pm

2 stops9h 22m

$299

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Wed 11/5

12:05 pm-9:20 pm

2 stops11h 15m

Ontario

Tue 11/11

11:45 am-10:08 pm

1 stop8h 23m

$344

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Wed 11/5

12:05 pm-9:20 pm

2 stops11h 15m

Ontario

Sat 11/8

11:36 am-9:35 pm

1 stop7h 59m

$344

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Wed 11/5

5:21 pm-10:31 pm

1 stop7h 10m

Ontario

Tue 11/11

7:00 am-4:42 pm

1 stop7h 42m

$379

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Sat 1/17

2:45 pm-10:53 pm

2 stops10h 08m

Ontario

Wed 1/21

7:00 am-4:48 pm

1 stop7h 48m

$384

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Wed 11/5

5:21 pm-10:31 pm

1 stop7h 10m

Ontario

Mon 11/10

7:00 am-4:42 pm

1 stop7h 42m

$404

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Tue 11/4

12:05 pm-9:20 pm

2 stops11h 15m

Ontario

Sun 11/9

6:00 am-5:22 pm

2 stops9h 22m

$404

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Wed 11/5

3:42 pm-10:31 pm

1 stop8h 49m

Ontario

Sun 11/9

7:00 am-3:07 pm

1 stop6h 07m

$404

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Fri 11/7

5:21 pm-10:31 pm

1 stop7h 10m

Ontario

Sun 11/16

7:00 am-4:42 pm

1 stop7h 42m

$404

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 17 results
1
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Best time to book a flight from Appleton to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Appleton 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.

Cheapflights Insights

Everything you need to know about your flight from Appleton to Ontario

What is the cheapest month to book a flight from Appleton to Ontario?

Currently, August is the cheapest month in which you can book a flight from Appleton to Ontario (average of $246). Flying from Appleton to Ontario in March is currently the most expensive (average of $327). 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.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated September 17, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines, and American Airlines from Appleton to Ontario to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,961 reviews
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,926 reviews
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Appleton to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Appleton to Ontario?

    For as low as $289, United Airlines can have you in Ontario from Appleton in 9h 59m. The distance from Appleton to Ontario is about 1697 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Currently priced at $288, Delta will fly you from Appleton to Ontario and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and United Airlines - these airlines can fly you to your destination from $288 and $304, respectively. Delta is 42% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Appleton to Ontario (average of $246). Flying from Appleton to Ontario in March is currently the most expensive (average of $327). 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 Appleton to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Appleton to Ontario

Discover the top 3 airlines that operate flights from Appleton to Ontario. 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 2,558,603 searches. Data last updated September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$288Average$344FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$288Average$500FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$304Average$483FlexibilityNo cancel feeOn-time69%

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