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$119+ Cheap flights from Wisconsin to San Diego (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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — SAN
Jul 2 — Jul 91
Thu 7/2
Thu 7/9
1 adult, Economy
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Cheap flight deals from Wisconsin to San Diego

Cheapest flights from Wisconsin to San Diego
Explore the most affordable flight options available from Wisconsin to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 2, 2026.

This deal was found by Cheapflights users on 5/29. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/253:59 pm
MKE
-
SAN
1 stop6h 17m
Delta
Wed 9/211:30 am
SAN
-
MKE
1 stop6h 48m
Delta
Deal found 5/29$237
This United Airlines deal was found by Cheapflights users on 5/31. 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 8/2510:19 am
MKE
-
SAN
2 stops8h 41m
United Airlines
Tue 9/110:40 pm
SAN
-
MKE
1 stop6h 27m
United Airlines
Deal found 5/31$242
This deal was found by Cheapflights users on 6/1. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/263:59 pm
MKE
-
SAN
1 stop6h 17m
Delta
Fri 8/2810:17 pm
SAN
-
MKE
1 stop8h 28m
Delta
Deal found 6/1$243
This Delta deal was found by Cheapflights users on 6/1. 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 8/243:59 pm
MKE
-
SAN
1 stop6h 17m
Delta
Fri 8/2810:17 pm
SAN
-
MKE
1 stop8h 28m
Delta
Deal found 6/1$249
This deal was found by Cheapflights users on 5/29. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:40 am
MKE
-
SAN
1 stop5h 58m
Delta
Mon 8/316:15 am
SAN
-
MKE
1 stop7h 47m
Delta
Deal found 5/29$261
This Southwest deal was found by Cheapflights users on 5/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:50 am
MKE
-
SAN
1 stop5h 45m
Southwest
Sat 8/156:20 am
SAN
-
MKE
1 stop8h 00m
Southwest
Deal found 5/28$263
This CheapOair deal was found by Cheapflights users on 6/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/249:57 pm
ORD
-
SAN
1 stop27h 54m
Frontier
Mon 7/278:51 pm
SAN
-
ORD
1 stop6h 46m
Frontier
Deal found 6/1$268
This Delta deal was found by Cheapflights users on 5/29. 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.
Wed 9/96:00 am
ORD
-
SAN
1 stop6h 46m
Delta
Sat 9/126:15 am
SAN
-
ORD
1 stop8h 21m
Delta
Deal found 5/29$270
This Kiwi.com deal was found by Cheapflights users on 5/31. 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.
Wed 11/411:06 am
ORD
-
SAN
1 stop14h 53m
Frontier
Sun 11/88:32 pm
SAN
-
ORD
1 stop11h 29m
Frontier
Deal found 5/31$271
This Priceline deal was found by Cheapflights users on 6/1. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/173:20 pm
MSP
-
SAN
Nonstop3h 47m
Multiple Airlines
Fri 7/36:25 am
SAN
-
MSP
1 stop7h 39m
Multiple Airlines
Deal found 6/1$274
This Kiwi.com deal was found by Cheapflights users on 5/30. 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.
Tue 9/19:48 pm
ORD
-
SAN
1 stop12h 54m
Frontier
Sun 9/66:25 am
SAN
-
ORD
1 stop12h 28m
Frontier
Deal found 5/30$274
This Frontier deal was found by Cheapflights users on 6/1. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/41:16 pm
MSP
-
SAN
1 stop12h 35m
Frontier
Thu 8/136:35 am
SAN
-
MSP
1 stop7h 33m
Frontier
Deal found 6/1$275

Find flight deals from Wisconsin to San Diego

Keep the following information in mind while searching for Wisconsin to San Diego flight deals. Data was last updated June 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$237
(American Airlines)

One-way from

$119
(American Airlines)

Popular in

March

Cheapest in

January

Average price

$447

Good round-trip deal

$407 or less

Good one-way deal

$249 or less
Provider with most accurate pricing for Milwaukee-Mitchell-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Milwaukee-Mitchell-San Diego flights.
Search Deals
From Wisconsin to San Diego
Search Deals
One-way flight from Wisconsin to San Diego
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($25 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from Wisconsin to San Diego.
Search Deals
Price to beat on a one-way flight from Wisconsin to San Diego.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Wisconsin 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 June 2, 2026.
Use the filters below to find and compare flights from Wisconsin to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MilwaukeeSan Diego

MKE - SAN

MKESAN

Milwaukee-Mitchell

Mon 8/17

4:47 pm-10:16 pm

1 stop7h 29m

San Diego

Fri 8/21

9:30 pm-9:12 am

1 stop9h 42m

$249

MilwaukeeSan Diego

MKE - SAN

MKESAN

Milwaukee-Mitchell

Mon 8/24

3:59 pm-8:16 pm

1 stop6h 17m

San Diego

Fri 8/28

10:17 pm-8:45 am

1 stop8h 28m

$249

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Wed 7/15

9:57 pm-11:51 pm

1 stop27h 54m

San Diego

Sun 7/19

6:25 am-8:52 pm

1 stop12h 27m

$315

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Mon 6/15

8:10 pm-10:39 pm

Nonstop4h 29m

San Diego

Sat 6/20

4:07 pm-12:44 am

1 stop6h 37m

$327

MilwaukeeSan Diego

MKE - SAN

MKESAN

Milwaukee-Mitchell

Tue 7/14

6:45 am-2:15 pm

2 stops9h 30m

San Diego

Tue 7/21

8:45 am-6:25 pm

2 stops7h 40m

$327

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Sat 8/22

5:28 am-12:33 pm

1 stop9h 05m

San Diego

Sat 9/12

10:30 pm-7:56 am

1 stop7h 26m

$327

RhinelanderSan Diego

RHI - SAN

RHISAN

Rhinelander Oneida County

Thu 10/29

6:31 am-10:53 am

1 stop6h 22m

San Diego

Mon 11/2

11:40 am-9:05 pm

1 stop7h 25m

$329

MadisonSan Diego

MSN - SAN

MSNSAN

Madison Truax Field

Wed 11/25

7:55 pm-11:55 pm

1 stop6h 00m

San Diego

Tue 12/1

10:30 pm-8:50 am

1 stop8h 20m

$333

MadisonSan Diego

MSN - SAN

MSNSAN

Madison Truax Field

Wed 9/23

1:30 pm-6:36 pm

1 stop7h 06m

San Diego

Sun 9/27

10:20 pm-8:48 am

1 stop8h 28m

$341

MadisonSan Diego

MSN - SAN

MSNSAN

Madison Truax Field

Fri 8/21

5:43 am-11:07 am

1 stop7h 24m

San Diego

Sat 8/29

10:17 pm-8:52 am

1 stop8h 35m

$341

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/1

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Wisconsin to San Diego

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

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

Currently, February is the cheapest month in which you can book a flight from Wisconsin to San Diego (average of $119). Flying from Wisconsin to San Diego in January is currently the most expensive (average of $214). 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.

What is the cheapest time of day to fly from WI to SAN?

Find hourly flight availability from Wisconsin to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 2, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Wisconsin to San Diego as you normally would.

How much does it cost to fly round-trip from Wisconsin to San Diego?

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

Booking 44 days in advance of your planned departure date is, on average, the best time to get cheap flights from Wisconsin to San Diego. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Related info for your journey

Find useful and relevant information for your journey from Wisconsin to San Diego. 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 into for flights to San Diego from Wisconsin?

    San Diego (SAN), located 2.6 mi from the city center, is the airport you fly into when you book flights from Wisconsin to San Diego.

  • How popular is this Wisconsin to San Diego flight route?

    Within the past month, 3 users have taken a look at flights from Wisconsin to San Diego.

  • How long is the flight from Wisconsin to San Diego?

    For as low as $327, Delta can have you in San Diego from Wisconsin in 4h 29m. The distance between Wisconsin and San Diego is about 1719 mi. This flight may include one or multiple stops.

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

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $82. American Airlines flights start at $123 while deals on United Airlines start at $128 one-way.

  • What are the most popular routes from Wisconsin to San Diego?

    The most popular route from Wisconsin to San Diego is Chicago O'Hare Intl - San Diego. You may also consider Minneapolis St Paul - San Diego or Milwaukee-Mitchell - San Diego.

  • What are the cheapest flights from Wisconsin to San Diego?

    Looking at all options, your cheapest flight can be booked for $198. While the most popular route (Chicago O'Hare Intl - San Diego) can be booked for $278 on average, our data indicates $409 when flying from Wisconsin to San Diego.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Wisconsin to San Diego (average of $119). Flying from Wisconsin to San Diego in January is currently the most expensive (average of $214). 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
National City
Poway
Coronado
La Mesa
Santee
Julian
Lemon Grove

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Alternative routes for Wisconsin to San Diego

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Top 6 airlines flying from Wisconsin to San Diego

Discover the top 6 airlines that operate flights from Wisconsin 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 June 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$135Average$296FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$225Average$463FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$235Average$393FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$247Average$537FlexibilityNo cancel feeOn-time75%
DeltaCheapest$256Average$414FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$276Average$430FlexibilityNo cancel feeOn-time63%

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