HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Diego

$131+ Cheap flights from Appleton to San Diego (ATW - SAN)

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 1/26. Fares are subject to change and may not be available on all flights or dates of travel.
ATW — SAN
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Appleton to San Diego 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.

Cheapflights Tip: The best prices from Appleton Intl to San Diego are usually found in September or July, booked 69 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

Cheap flight deals from Appleton to San Diego

Cheapest flights from Appleton to San Diego
Explore the most affordable flight options available from Appleton to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This United Airlines deal was found by Cheapflights users on 12/11. 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 12/125:20 pmATW - SAN
1 stop7h 10mUnited Airlines
Mon 12/1510:52 amSAN - ATW
1 stop8h 40mUnited Airlines
Deal found 12/11$519
This American Airlines deal was found by Cheapflights users on 12/11. 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.
Fri 12/123:48 pmATW - SAN
1 stop6h 57mAmerican Airlines
Mon 12/1512:50 pmSAN - ATW
2 stops8h 44mAmerican Airlines
Deal found 12/11$564
This United Airlines deal was found by Cheapflights users on 12/10. 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 12/253:24 pmATW - SAN
1 stop9h 27mUnited Airlines
Mon 12/297:00 amSAN - ATW
1 stop7h 48mUnited Airlines
Deal found 12/10$567
This Kiwi.com deal was found by Cheapflights users on 12/11. 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 12/156:00 amATW - SAN
1 stop8h 38mMultiple Airlines
Sat 12/207:21 pmSAN - ATW
1 stop18h 03mMultiple Airlines
Deal found 12/11$579
This Delta deal was found by Cheapflights users on 12/10. 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 12/1611:13 amATW - SAN
1 stop9h 08mDelta
Mon 12/227:20 amSAN - ATW
1 stop7h 15mDelta
Deal found 12/10$629
This Kiwi.com deal was found by Cheapflights users on 12/11. 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 12/156:00 amATW - SAN
1 stop8h 38mMultiple Airlines
Fri 12/197:21 pmSAN - ATW
1 stop19h 17mMultiple Airlines
Deal found 12/11$638
This Delta deal was found by Cheapflights users on 12/11. 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 12/165:31 amATW - SAN
1 stop9h 31mDelta
Sat 12/2011:52 amSAN - ATW
1 stop9h 17mDelta
Deal found 12/11$657
This Delta deal was found by Cheapflights users on 12/11. 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.
Sun 12/146:00 amATW - SAN
1 stop9h 09mDelta
Sat 12/201:13 pmSAN - ATW
1 stop7h 56mDelta
Deal found 12/11$659

Find flight deals from Appleton to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Appleton (ATW) to San Diego (SAN). 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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$277
(Delta)

One-way from

$131
(Kiwi.com)

Popular in

March

Cheapest in

September

Average price

$441
Provider with most accurate pricing for Appleton Intl-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Appleton Intl-San Diego flights.
Search Deals
From Appleton Intl to San Diego
Search Deals
One-way flight from Appleton Intl to San Diego
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($50 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Appleton to San Diego 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 December 12, 2025.
Use the filters below to find and compare flights from Appleton to San Diego that are best for you.

Fly from

Appleton

Fly to

San Diego

Route

Depart

Return

Price

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Wed 1/14

4:20 pm-8:51 pm

1 stop6h 31m

San Diego

Sat 1/17

6:15 am-3:40 pm

1 stop7h 25m

$277

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Sat 1/24

8:20 am-3:04 pm

1 stop8h 44m

San Diego

Sat 1/31

7:00 am-4:48 pm

1 stop7h 48m

$277

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Thu 1/22

3:39 pm-10:33 pm

1 stop8h 54m

San Diego

Sat 1/24

7:00 am-4:48 pm

1 stop7h 48m

$283

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Sun 1/25

2:45 pm-10:33 pm

1 stop9h 48m

San Diego

Sat 1/31

7:00 am-3:04 pm

1 stop6h 04m

$283

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Fri 1/23

5:23 pm-10:33 pm

1 stop7h 10m

San Diego

Wed 2/4

6:30 am-4:48 pm

2 stops8h 18m

$288

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Sat 2/7

5:04 pm-10:26 pm

1 stop7h 22m

San Diego

Thu 2/12

3:23 pm-11:16 pm

1 stop5h 53m

$289

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Fri 1/30

3:39 pm-10:33 pm

1 stop8h 54m

San Diego

Wed 2/4

7:00 am-4:48 pm

1 stop7h 48m

$293

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Thu 1/15

3:39 pm-11:42 pm

2 stops10h 03m

San Diego

Thu 1/22

11:08 am-8:50 pm

2 stops7h 42m

$315

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Sun 1/25

3:10 pm-5:03 pm

1 stop27h 53m

$153

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Sat 1/24

4:20 pm-8:48 pm

1 stop6h 28m

$156

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 15 results
1
2

Compare providers for flights from Appleton to San Diego

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Appleton to San Diego in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Appleton-San Diego flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Appleton-San Diego flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Appleton-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Appleton-San Diego flights, Cheapflights users trust eDreams the most. eDreams 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-San Diego 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 San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego 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 San Diego

How far ahead should I book a flight from Appleton to San Diego?

Use this chart to determine the optimal time to book a round-trip flight from Appleton to San Diego. Price data was last updated on December 5, 2025.

Booking 69 days in advance of your planned departure date is, on average, the best time to get cheap flights from Appleton to San Diego. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, February is the cheapest month in which you can book a flight from Appleton to San Diego (average of $168). Flying from Appleton to San Diego in December is currently the most expensive (average of $256). 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 San Diego

Get insights into the airlines that provide service to San Diego. 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 San Diego. Reviews last updated December 12, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines, and American Airlines from Appleton to San Diego 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
7.9
Good
8,008 reviews

Boarding

8.1

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

7.9

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
7.9
Good
8,008 reviews
Delta
7.9
Good
8,008 reviews

Boarding

8.1

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

7.9

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
9,095 reviews
Delta
7.9
Good
8,008 reviews

Boarding

8.1

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

7.9

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
11,050 reviews
Delta
7.9
Good
8,008 reviews

Boarding

8.1

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

7.9

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 San Diego. 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 San Diego?

    Airlines like Delta and United Airlines fly from Appleton to San Diego in about 6h 31m. The time it takes to get you to your destination can typically vary by up to 2h 13m. The distance from Appleton to San Diego is about 1730 mi. This flight may include one or multiple stops.

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

    Cheapflights users have booked flights from Appleton to San Diego round-trip from $279. Other airlines that can offer you cheap pricing are American Airlines, from $283, and United Airlines, from $288. Delta is priced at 35% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Appleton to San Diego one-way?

    The cheapest airlines for a one-way flight from Appleton to San Diego are American Airlines ($114), United Airlines ($159), and Delta ($169).

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

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

  • How can I find direct flights from Appleton to San Diego?

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

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

    Yes. Cheapflights offers flight deals from Appleton to San Diego 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 San Diego?

    Currently, February is the cheapest month in which you can book a flight from Appleton to San Diego (average of $168). Flying from Appleton to San Diego in December is currently the most expensive (average of $256). 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

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
Coronado
La Mesa
Poway
Lemon Grove
Julian
National City

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 San Diego

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
Minneapolis to Las Vegas flights
O'Hare Intl to Ontario flights
O'Hare Intl to Santa Ana flights
O'Hare Intl to San Francisco flights
Minneapolis to Los Angeles flights
O'Hare Intl to San Diego flights
Minneapolis to San Diego flights
O'Hare Intl to Burbank flights
Milwaukee to Las Vegas flights
O'Hare Intl to Palm Springs flights
Minneapolis to San Francisco flights
Minneapolis to Ontario flights
O'Hare Intl to Reno flights
Minneapolis to Palm Springs flights
Minneapolis to Santa Ana flights
Madison to Las Vegas flights
O'Hare Intl to Long Beach flights
O'Hare Intl to San Jose flights
O'Hare Intl to Sacramento flights
Milwaukee to Los Angeles flights
Appleton to Las Vegas flights
Madison to Los Angeles flights
Milwaukee to Ontario flights
Milwaukee to San Diego flights
Minneapolis to Reno flights
Milwaukee to Santa Ana flights
O'Hare Intl to Oakland flights
Minneapolis to Sacramento flights
Milwaukee to Palm Springs flights
Madison to Santa Ana flights
Madison to Ontario flights
Milwaukee to San Francisco flights
Minneapolis to San Jose flights
Green Bay to Las Vegas flights
Madison to San Francisco flights
Minneapolis to Burbank flights
Milwaukee to Burbank flights
Madison to Palm Springs flights
Appleton to Los Angeles flights
O'Hare Intl to Santa Barbara flights
Madison to San Diego flights
Milwaukee to Long Beach flights
Minneapolis to Fresno flights
Madison to Reno flights
Minneapolis to Long Beach flights
Milwaukee to Reno flights
Milwaukee to San Jose flights

Top 3 airlines flying from Appleton to San Diego

Discover the top 3 airlines that operate flights from Appleton to San Diego. 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$281Average$378FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$283Average$438FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$288Average$464FlexibilityNo 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.