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$80+ 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 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — SAN
Mar 28 — Apr 41
Sat 3/28
Sat 4/4
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 February 26, 2026.

This American Airlines deal was found by Cheapflights users on 2/24. 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 4/119:00 pm
ORD
-
SAN
Nonstop4h 33m
American Airlines
Sat 4/1810:40 pm
SAN
-
ORD
Nonstop4h 05m
American Airlines
Deal found 2/24$168
This Kiwi.com deal was found by Cheapflights users on 2/22. 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 4/83:29 pm
ORD
-
SAN
1 stop10h 33m
Frontier
Wed 4/152:12 pm
SAN
-
ORD
1 stop13h 56m
Frontier
Deal found 2/22$169
This United Airlines deal was found by Cheapflights users on 2/23. 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.
Mon 3/308:20 pm
ORD
-
SAN
Nonstop4h 39m
United Airlines
Tue 4/710:30 pm
SAN
-
ORD
Nonstop4h 05m
United Airlines
Deal found 2/23$170
This Kiwi.com deal was found by Cheapflights users on 2/23. 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 4/35:05 am
ORD
-
SAN
1 stop20h 39m
Frontier
Sat 4/116:35 am
SAN
-
ORD
1 stop15h 24m
Frontier
Deal found 2/23$171
This United Airlines deal was found by Cheapflights users on 2/25. 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 4/16:25 am
ORD
-
SAN
1 stop7h 30m
United Airlines
Tue 4/710:30 pm
SAN
-
ORD
Nonstop4h 05m
United Airlines
Deal found 2/25$172
This Kiwi.com deal was found by Cheapflights users on 2/23. 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.
Sat 4/45:53 pm
ORD
-
SAN
2 stops15h 28m
Frontier
Sat 4/116:35 am
SAN
-
ORD
1 stop15h 24m
Frontier
Deal found 2/23$173
This Kiwi.com deal was found by Cheapflights users on 2/25. 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.
Sat 4/115:53 pm
ORD
-
SAN
1 stop8h 09m
Frontier
Sat 4/183:19 pm
SAN
-
ORD
2 stops16h 26m
Frontier
Deal found 2/25$174
This United Airlines deal was found by Cheapflights users on 2/24. 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 4/108:20 pm
ORD
-
SAN
Nonstop4h 39m
United Airlines
Mon 4/1310:30 pm
SAN
-
ORD
Nonstop4h 05m
United Airlines
Deal found 2/24$175
This Kiwi.com deal was found by Cheapflights users on 2/23. 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 4/158:25 am
ORD
-
SAN
2 stops16h 41m
Frontier
Sat 4/182:12 pm
SAN
-
ORD
1 stop13h 56m
Frontier
Deal found 2/23$176
This United Airlines deal was found by Cheapflights users on 2/23. 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 4/307:05 am
ORD
-
SAN
Nonstop4h 37m
United Airlines
Mon 5/44:49 pm
SAN
-
ORD
Nonstop4h 10m
United Airlines
Deal found 2/23$177
This Kiwi.com deal was found by Cheapflights users on 2/23. 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.
Sat 4/45:53 pm
ORD
-
SAN
1 stop8h 09m
Frontier
Wed 4/82:49 pm
SAN
-
ORD
2 stops12h 50m
Frontier
Deal found 2/23$178
This Kiwi.com deal was found by Cheapflights users on 2/25. 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 4/96:00 pm
ORD
-
SAN
2 stops32h 02m
Frontier
Mon 4/138:54 pm
SAN
-
ORD
1 stop7h 26m
Frontier
Deal found 2/25$179

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 February 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$168
(American Airlines)

One-way from

$80
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$363

Good round-trip deal

$407 or less

Good one-way deal

$185 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. 8% potential increase in price ($37 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 26, 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

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Wed 3/18

4:20 pm-7:00 pm

Nonstop4h 40m

San Diego

Tue 3/24

1:53 pm-11:08 pm

1 stop7h 15m

$227

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Wed 3/18

2:38 pm-11:09 pm

1 stop10h 31m

San Diego

Wed 4/15

8:00 am-8:16 pm

1 stop10h 16m

$237

Green BaySan Diego

GRB - SAN

GRBSAN

Green Bay Austin-Straubel

Wed 4/1

3:47 pm-10:59 pm

1 stop9h 12m

San Diego

Tue 4/7

7:40 pm-10:00 am

2 stops12h 20m

$284

Green BaySan Diego

GRB - SAN

GRBSAN

Green Bay Austin-Straubel

Wed 4/8

5:35 pm-10:59 pm

1 stop7h 24m

San Diego

Wed 4/15

9:45 pm-10:00 am

2 stops10h 15m

$284

MilwaukeeSan Diego

MKE - SAN

MKESAN

Milwaukee-Mitchell

Thu 4/2

12:15 pm-2:45 pm

Nonstop4h 30m

San Diego

Wed 4/8

10:10 pm-9:40 am

1 stop9h 30m

$288

Green BaySan Diego

GRB - SAN

GRBSAN

Green Bay Austin-Straubel

Thu 4/2

4:19 pm-11:40 pm

1 stop9h 21m

San Diego

Sat 4/11

6:15 am-3:38 pm

1 stop7h 23m

$289

MadisonSan Diego

MSN - SAN

MSNSAN

Madison Truax Field

Thu 7/9

1:45 pm-9:44 pm

1 stop9h 59m

San Diego

Tue 7/14

10:30 pm-8:46 am

1 stop8h 16m

$293

MinneapolisSan Diego

MSP - SAN

MSPSAN

Minneapolis St Paul

Fri 5/1

3:10 pm-4:58 pm

Nonstop3h 48m

San Diego

Thu 5/7

5:58 pm-11:37 pm

Nonstop3h 39m

$294

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Thu 4/30

2:43 pm-10:34 pm

1 stop9h 51m

San Diego

Sun 5/3

10:40 pm-8:54 am

1 stop8h 14m

$304

MilwaukeeSan Diego

MKE - SAN

MKESAN

Milwaukee-Mitchell

Tue 3/24

3:59 pm-8:45 pm

1 stop6h 46m

San Diego

Tue 3/31

10:30 pm-9:04 am

1 stop8h 34m

$305

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/25

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, June is the cheapest month in which you can book a flight from Wisconsin to San Diego (average of $165). Flying from Wisconsin to San Diego in February 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.

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 February 26, 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.

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 $288, United Airlines can have you in San Diego from Wisconsin in 4h 30m. The distance between Wisconsin and San Diego is about 1735 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 Spirit Airlines, which is currently one of the cheapest options available, starting at $79. Frontier flights start at $85 while deals on American Airlines start at $123 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 $152. While the most popular route (Chicago O'Hare Intl - San Diego) can be booked for $107 on average, our data indicates $350 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, June is the cheapest month in which you can book a flight from Wisconsin to San Diego (average of $165). Flying from Wisconsin to San Diego in February 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
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove

Browse thousands of different options on Cheapflights for your next trip

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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 February 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$89Average$250FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$173Average$241FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$216Average$459FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$235Average$406FlexibilityNo cancel feeOn-time69%
DeltaCheapest$256Average$412FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$275Average$436FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$372Average$691FlexibilityNo cancel feeOn-time75%

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