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$200+ 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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
ATW — ONT
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
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 August 14, 2025.

Round-trip from

$294
(Delta)

One-way from

$200
(Delta)

Popular in

October

Cheapest in

May

Average price

$382
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. 14% potential increase in price ($88 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($43 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 14, 2025.

This Kiwi.com deal was found by Cheapflights users on 8/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/43:20 pmATW - ONT
1 stop6h 34mMultiple Airlines
Sat 9/68:59 pmONT - ATW
1 stop22h 02mMultiple Airlines
Deal found 8/12$287
This United Airlines deal was found by Cheapflights users on 8/12. 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 10/12:45 pmATW - ONT
1 stop9h 45mUnited Airlines
Tue 10/71:15 pmONT - ATW
1 stop5h 41mUnited Airlines
Deal found 8/12$289
This Delta deal was found by Cheapflights users on 8/13. 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.
Sat 9/274:16 pmATW - ONT
2 stops8h 25mDelta
Tue 9/3011:55 amONT - ATW
1 stop8h 45mDelta
Deal found 8/13$294
This United Airlines deal was found by Cheapflights users on 8/12. 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 9/56:41 amATW - ONT
2 stops12h 56mUnited Airlines
Tue 9/95:10 amONT - ATW
2 stops7h 59mUnited Airlines
Deal found 8/12$299
This United Airlines deal was found by Cheapflights users on 8/12. 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.
Thu 9/48:20 amATW - ONT
2 stops11h 09mUnited Airlines
Sat 9/67:00 amONT - ATW
1 stop6h 06mUnited Airlines
Deal found 8/12$313
This Delta deal was found by Cheapflights users on 8/13. 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 11/125:29 amATW - ONT
1 stop7h 55mDelta
Sat 11/1512:00 pmONT - ATW
1 stop7h 59mDelta
Deal found 8/13$314
This Delta deal was found by Cheapflights users on 8/12. 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.
Sat 8/306:28 amATW - ONT
2 stops7h 46mDelta
Sat 9/611:45 amONT - ATW
1 stop9h 08mDelta
Deal found 8/12$319
This United Airlines deal was found by Cheapflights users on 8/12. 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 8/278:20 amATW - ONT
2 stops11h 17mUnited Airlines
Wed 9/35:10 amONT - ATW
2 stops9h 39mUnited Airlines
Deal found 8/12$324
This Kiwi.com deal was found by Cheapflights users on 8/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/254:01 pmATW - ONT
2 stops33h 49mMultiple Airlines
Thu 9/46:00 amONT - ATW
1 stop8h 12mMultiple Airlines
Deal found 8/12$333
This Kiwi.com deal was found by Cheapflights users on 8/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/299:21 pmATW - ONT
1 stop20h 50mMultiple Airlines
Thu 9/46:00 amONT - ATW
1 stop8h 12mMultiple Airlines
Deal found 8/12$337
This Delta deal was found by Cheapflights users on 8/12. 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 10/111:10 amATW - ONT
2 stops13h 13mDelta
Tue 10/711:36 amONT - ATW
1 stop8h 06mDelta
Deal found 8/12$338

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 August 14, 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 9/27

4:16 pm-10:41 pm

2 stops8h 25m

Ontario

Tue 9/30

11:55 am-10:40 pm

1 stop8h 45m

$294

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Wed 10/1

6:33 am-1:54 pm

1 stop9h 21m

Ontario

Tue 10/7

10:09 am-11:43 pm

2 stops11h 34m

$294

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Sat 11/8

4:17 pm-9:20 pm

2 stops7h 03m

Ontario

Sat 11/15

12:00 pm-9:59 pm

1 stop7h 59m

$294

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Sat 11/8

12:05 pm-9:20 pm

2 stops11h 15m

Ontario

Tue 11/18

12:00 pm-9:59 pm

1 stop7h 59m

$294

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Wed 11/12

5:29 am-11:24 am

1 stop7h 55m

Ontario

Tue 11/18

12:00 pm-9:59 pm

1 stop7h 59m

$314

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Wed 11/12

5:29 am-11:24 am

1 stop7h 55m

Ontario

Sat 11/15

12:00 pm-9:59 pm

1 stop7h 59m

$314

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Fri 11/7

12:05 pm-9:20 pm

2 stops11h 15m

Ontario

Tue 11/18

12:00 pm-9:59 pm

1 stop7h 59m

$319

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Fri 11/7

12:05 pm-9:20 pm

2 stops11h 15m

Ontario

Sat 11/15

12:00 pm-9:59 pm

1 stop7h 59m

$319

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Wed 1/7

12:06 pm-10:38 pm

2 stops12h 32m

Ontario

Fri 2/27

10:30 pm-11:21 am

2 stops10h 51m

$324

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Wed 11/19

5:29 am-11:24 am

1 stop7h 55m

Ontario

Wed 11/26

12:00 pm-9:59 pm

1 stop7h 59m

$333

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 22 results
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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 $328). 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 August 14, 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
7,980 reviews

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.3

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
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.3

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
8,916 reviews
Delta
8.0
Very good
7,980 reviews

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.3

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
7,980 reviews

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Boarding

8.2

Food

7.3

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.

  • 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 44% 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 $328). 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$288Average$344FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$288Average$453FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$304Average$476FlexibilityNo cancel feeOn-time69%

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