HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$249+ 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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
ATW — ONT
Jun 1 — Jun 81
Mon 6/1
Mon 6/8
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Appleton to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 May 2, 2026.

This Delta deal was found by Cheapflights users on 4/29. 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.
Fri 8/215:29 am
ATW
-
ONT
1 stop7h 35m
Delta
Tue 9/112:00 pm
ONT
-
ATW
1 stop7h 57m
Delta
Deal found 4/29$349
This American Airlines deal was found by Cheapflights users on 5/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/232:04 pm
ATW
-
ONT
1 stop10h 32m
American Airlines
Fri 5/2911:59 pm
ONT
-
ATW
2 stops10h 56m
American Airlines
Deal found 5/1$354
This Delta deal was found by Cheapflights users on 5/1. 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 5/2312:32 pm
ATW
-
ONT
2 stops11h 16m
Delta
Fri 5/2910:00 pm
ONT
-
ATW
2 stops11h 51m
Delta
Deal found 5/1$359
This Delta deal was found by Cheapflights users on 4/27. 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 7/294:10 pm
ATW
-
ONT
2 stops9h 38m
Delta
Fri 8/711:48 am
ONT
-
ATW
1 stop8h 43m
Delta
Deal found 4/27$374
This Delta deal was found by Cheapflights users on 5/1. 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.
Mon 8/241:26 pm
ATW
-
ONT
2 stops12h 18m
Delta
Sat 8/2912:00 pm
ONT
-
ATW
1 stop7h 57m
Delta
Deal found 5/1$379
This Delta deal was found by Cheapflights users on 4/28. 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 5/274:13 pm
ATW
-
ONT
2 stops9h 21m
Delta
Sat 5/301:29 pm
ONT
-
ATW
2 stops7h 25m
Delta
Deal found 4/28$385
This Delta deal was found by Cheapflights users on 4/27. 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 7/294:10 pm
ATW
-
ONT
2 stops9h 38m
Delta
Thu 8/611:48 am
ONT
-
ATW
1 stop8h 43m
Delta
Deal found 4/27$399
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 5/282:28 pm
ATW
-
ONT
2 stops43h 36m
Multiple Airlines
Thu 6/43:30 pm
ONT
-
ATW
1 stop21h 41m
Multiple Airlines
Deal found 4/30$411
This Delta deal was found by Cheapflights users on 4/30. 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.
Thu 9/105:29 am
ATW
-
ONT
1 stop7h 35m
Delta
Fri 9/2512:00 pm
ONT
-
ATW
1 stop7h 57m
Delta
Deal found 4/30$414
This Delta deal was found by Cheapflights users on 4/30. 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 8/125:29 am
ATW
-
ONT
1 stop7h 35m
Delta
Sat 9/57:00 am
ONT
-
ATW
2 stops11h 40m
Delta
Deal found 4/30$419
This American Airlines deal was found by Cheapflights users on 4/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/282:04 pm
ATW
-
ONT
2 stops9h 53m
American Airlines
Thu 6/47:13 pm
ONT
-
ATW
2 stops13h 33m
American Airlines
Deal found 4/30$423

Find 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 May 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$349
(Delta)

One-way from

$249
(Delta)

Popular in

March

Cheapest in

December

Average price

$461
Provider with most accurate pricing for Appleton Intl-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Appleton Intl-Ontario flights.
Search Deals
From Appleton Intl to Ontario
Search Deals
One-way flight from Appleton Intl to Ontario
Search Deals
Highest demand for flights based on searches. 53% potential increase in price ($901 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 62% potential price decrease ($298 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

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 May 2, 2026.
Use the filters below to find and compare flights from Appleton to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Sat 5/23

12:32 pm-9:48 pm

2 stops11h 16m

Ontario

Fri 5/29

10:00 pm-11:51 am

2 stops11h 51m

$359

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Sat 8/1

6:00 am-12:10 pm

2 stops8h 10m

Ontario

Tue 8/4

11:48 am-10:31 pm

1 stop8h 43m

$424

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Fri 5/15

4:13 pm-11:34 pm

2 stops9h 21m

Ontario

Tue 5/19

12:08 pm-10:48 pm

1 stop8h 40m

$424

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Fri 5/15

2:43 pm-10:35 pm

1 stop9h 52m

Ontario

Tue 5/19

7:00 am-4:50 pm

1 stop7h 50m

$449
Quickest round-trip

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Thu 7/30

5:30 pm-10:51 pm

1 stop7h 21m

Ontario

Tue 8/4

1:18 pm-9:04 pm

1 stop5h 46m

$469

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Fri 7/31

5:30 pm-10:51 pm

1 stop7h 21m

Ontario

Tue 8/4

1:18 pm-9:04 pm

1 stop5h 46m

$469

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Sat 8/1

5:30 pm-10:51 pm

1 stop7h 21m

Ontario

Wed 8/5

6:30 am-4:54 pm

1 stop8h 24m

$469

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Sat 5/30

5:30 pm-10:51 pm

1 stop7h 21m

Ontario

Tue 6/2

5:45 am-7:16 pm

2 stops11h 31m

$474

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Wed 6/3

3:44 pm-10:51 pm

1 stop9h 07m

Ontario

Wed 6/10

6:05 am-4:54 pm

1 stop8h 49m

$519

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Tue 6/30

5:30 pm-10:51 pm

1 stop7h 21m

Ontario

Tue 7/7

1:18 pm-9:04 pm

1 stop5h 46m

$519

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3
  • Most accurate provider: When it comes to deals on Appleton-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Appleton-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Appleton-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Appleton-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Appleton-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, December is the cheapest month in which you can book a flight from Appleton to Ontario (average of $319). Flying from Appleton to Ontario in March is currently the most expensive (average of $4,044). 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.

How much does it cost to fly round-trip from Appleton to Ontario?

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 May 2, 2026.
Peruse reviews from past customers who have flown with 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.
United Airlines
7.4
Good
9,679 reviews

Food

6.6

Entertainment

7.1

Crew

8.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
9,679 reviews
United Airlines
7.4
Good
9,679 reviews

Food

6.6

Entertainment

7.1

Crew

8.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
American Airlines
7.1
Good
11,673 reviews
United Airlines
7.4
Good
9,679 reviews

Food

6.6

Entertainment

7.1

Crew

8.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

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 $349, Delta can have you in Ontario from Appleton in 7h 35m. The distance from Appleton to Ontario is about 1697 mi.

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

    Currently priced at $288, American Airlines will fly you from Appleton to Ontario and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on United Airlines for as low as $352. American Airlines is 62% 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, December is the cheapest month in which you can book a flight from Appleton to Ontario (average of $319). Flying from Appleton to Ontario in March is currently the most expensive (average of $4,044). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Appleton to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Las Vegas flights
O'Hare Intl to Los Angeles flights
O'Hare Intl to San Francisco flights
Minneapolis to Las Vegas flights
O'Hare Intl to San Diego flights
O'Hare Intl to Ontario flights
Minneapolis to San Francisco flights
Minneapolis to Los Angeles flights
Minneapolis to San Diego flights
O'Hare Intl to Santa Ana flights
Milwaukee to Las Vegas flights
O'Hare Intl to San Jose flights
O'Hare Intl to Reno flights
O'Hare Intl to Sacramento flights
Madison to Las Vegas flights
O'Hare Intl to Oakland flights
O'Hare Intl to Burbank flights
Minneapolis to Ontario flights
O'Hare Intl to Palm Springs flights
Appleton to Las Vegas flights
O'Hare Intl to Santa Barbara flights
Minneapolis to Santa Ana flights
Minneapolis to Sacramento flights
O'Hare Intl to Fresno flights
Milwaukee to San Diego flights
Minneapolis to San Jose flights
Madison to San Francisco flights
Milwaukee to Los Angeles flights
Minneapolis to Reno flights
Minneapolis to Burbank flights
Milwaukee to San Francisco flights
Minneapolis to Fresno flights
Madison to San Diego flights
Madison to Los Angeles flights
Minneapolis to Palm Springs flights
Green Bay to Las Vegas flights
O'Hare Intl to Long Beach flights
Milwaukee to Ontario flights
Appleton to San Diego flights
Minneapolis to Long Beach flights
Madison to Reno flights
Madison to Ontario flights
Milwaukee to Reno flights
O'Hare Intl to Monterey flights
Milwaukee to Oakland flights
Madison to Santa Ana flights
Appleton to San Francisco flights
Wausau to Las Vegas flights

Top 2 airlines flying from Appleton to Ontario

Discover the top 2 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 May 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$288Average$500FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$352Average$541FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.