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$94+ 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 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — SAN
Aug 31 — Sep 71
Mon 8/31
Mon 9/7
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 August 1, 2026.

This Frontier deal was found by Cheapflights users on 7/30. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:53 pm
MSN
-
SAN
1 stop6h 06m
Frontier
Fri 11/136:25 am
SAN
-
MSN
1 stop10h 33m
Frontier
Deal found 7/30$240
This Alaska Airlines deal was found by Cheapflights users on 7/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/184:44 pm
MKE
-
SAN
1 stop8h 47m
Alaska Airlines
Mon 12/77:00 am
SAN
-
MKE
1 stop28h 52m
Alaska Airlines
Deal found 7/27$242
This CheapOair deal was found by Cheapflights users on 7/31. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/237:55 pm
MSN
-
SAN
1 stop5h 56m
Frontier
Sat 9/124:54 pm
SAN
-
MSN
1 stop24h 21m
Frontier
Deal found 7/31$262
This Frontier deal was found by Cheapflights users on 8/1. 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.
Thu 8/202:41 pm
ORD
-
SAN
1 stop11h 10m
Frontier
Thu 9/109:03 pm
SAN
-
ORD
1 stop6h 35m
Frontier
Deal found 8/1$264
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 8/199:20 am
ORD
-
SAN
1 stop8h 21m
Multiple Airlines
Wed 8/261:03 pm
SAN
-
ORD
Nonstop4h 18m
Multiple Airlines
Deal found 7/31$265
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/199:20 am
ORD
-
SAN
1 stop8h 21m
Multiple Airlines
Tue 9/87:03 am
SAN
-
ORD
Nonstop4h 19m
Multiple Airlines
Deal found 8/1$266
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/167:20 am
ORD
-
SAN
Nonstop4h 36m
Alaska Airlines
Tue 10/207:00 am
SAN
-
ORD
Nonstop4h 25m
Alaska Airlines
Deal found 7/29$267
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/305:29 pm
ATW
-
SAN
1 stop24h 12m
Multiple Airlines
Mon 11/26:25 am
SAN
-
ATW
1 stop14h 42m
Multiple Airlines
Deal found 7/29$267
This Delta deal was found by Cheapflights users on 7/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/229:30 am
ORD
-
SAN
1 stop7h 40m
Delta
Sat 8/2912:34 pm
SAN
-
ORD
1 stop9h 23m
Delta
Deal found 7/31$268
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:01 am
ORD
-
SAN
Nonstop4h 31m
Alaska Airlines
Thu 8/201:03 pm
SAN
-
ORD
Nonstop4h 18m
Alaska Airlines
Deal found 7/29$269
This Frontier deal was found by Cheapflights users on 7/27. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/181:01 pm
ORD
-
SAN
1 stop6h 59m
Frontier
Mon 9/219:03 pm
SAN
-
ORD
1 stop6h 35m
Frontier
Deal found 7/27$270
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/199:20 am
ORD
-
SAN
1 stop8h 21m
Frontier
Mon 9/78:59 pm
SAN
-
ORD
1 stop19h 22m
Frontier
Deal found 8/1$271

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 August 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$240
(Frontier)

One-way from

$94
(Alaska Airlines)

Popular in

March

Cheapest in

January

Average price

$355

Good round-trip deal

$432 or less

Good one-way deal

$229 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. 7% potential increase in price ($30 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 August 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 August 1, 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

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Wed 8/19

11:22 am-6:14 pm

1 stop8h 52m

San Diego

Mon 8/24

10:17 pm-7:56 am

1 stop7h 39m

$269

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Thu 9/24

2:18 pm-4:55 pm

Nonstop4h 37m

San Diego

Sun 9/27

7:03 am-1:22 pm

Nonstop4h 19m

$277

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Mon 8/17

5:20 pm-10:16 pm

1 stop6h 56m

San Diego

Mon 8/24

10:17 pm-7:56 am

1 stop7h 39m

$277

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Sat 9/5

6:00 am-2:44 pm

1 stop10h 44m

San Diego

Sat 9/12

7:03 am-1:22 pm

Nonstop4h 19m

$277

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Wed 9/23

8:00 am-5:13 pm

1 stop11h 13m

San Diego

Wed 9/30

1:03 pm-7:21 pm

Nonstop4h 18m

$289

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Thu 9/10

7:20 am-10:00 am

Nonstop4h 40m

San Diego

Tue 9/15

9:31 am-11:59 pm

1 stop12h 28m

$297

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Fri 10/9

2:21 pm-5:01 pm

Nonstop4h 40m

San Diego

Sun 10/11

5:46 pm-11:59 pm

Nonstop4h 13m

$297

MilwaukeeSan Diego

MKE - SAN

MKESAN

Milwaukee-Mitchell

Thu 10/8

5:00 pm-11:45 pm

1 stop8h 45m

San Diego

Mon 10/12

10:40 pm-9:50 am

1 stop9h 10m

$307

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Sun 9/13

5:30 am-11:25 am

1 stop7h 55m

San Diego

Sun 9/20

6:15 am-4:13 pm

1 stop7h 58m

$317

MilwaukeeSan Diego

MKE - SAN

MKESAN

Milwaukee-Mitchell

Fri 9/11

3:05 pm-5:10 pm

Nonstop4h 05m

San Diego

Tue 9/15

11:55 am-8:35 pm

1 stop6h 40m

$322

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

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, August is the cheapest month in which you can book a flight from Wisconsin to San Diego (average of $373). Flying from Wisconsin to San Diego in March is currently the most expensive (average of $535). 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 August 1, 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?

Airfare is below average for this route at the moment.
Wisconsin to San Diego flights typically cost between $311 and $395 in November.
The cheapest round-trip price found within the last 5 days was $247 on Alaska Airlines (Nov 18-Dec 7).

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

Booking 47 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 $277, Delta can have you in San Diego from Wisconsin in 4h 37m. 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 $104. Delta flights start at $121 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 $161. While the most popular route (Chicago O'Hare Intl - San Diego) can be booked for $198 on average, our data indicates $402 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, August is the cheapest month in which you can book a flight from Wisconsin to San Diego (average of $373). Flying from Wisconsin to San Diego in March is currently the most expensive (average of $535). 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
National City
Chula Vista
Poway
La Mesa
Coronado
Santee
San Ysidro
Julian
Lemon Grove

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Alternative routes for Wisconsin to San Diego

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Top 7 airlines flying from Wisconsin to San Diego

Discover the top 7 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 August 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$93Average$524FlexibilityNo cancel feeOn-time75%
FrontierCheapest$135Average$336FlexibilityNo cancel feeOn-time62%
DeltaCheapest$199Average$406FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$235Average$394FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$236Average$456FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$276Average$428FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$286Average$303FlexibilityNo cancel feeOn-time62%

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