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$73+ Cheap flights from Milwaukee to San Diego (MKE - 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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — SAN
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheapflights Tip: The best prices from Milwaukee-Mitchell to San Diego are usually found in November or August, booked 60 days in advance, depart on a Monday or Tuesday and return on a Monday

Cheap flight deals from Milwaukee to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Milwaukee (MKE) 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 July 29, 2025.

Round-trip from

$176
(CheapOair)

One-way from

$73
(Booking.com)

Popular in

June

Cheapest in

November

Average price

$433
From Milwaukee-Mitchell to San Diego
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One-way flight from Milwaukee-Mitchell to San Diego
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Highest demand for flights based on searches. 4% potential increase in price ($17 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Milwaukee to San Diego

Cheapest flights from Milwaukee to San Diego
Explore the most affordable flight options available from Milwaukee to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/149:25 pmMKE - SAN
1 stop11h 56mSpirit Airlines
Thu 8/216:15 amSAN - MKE
1 stop12h 15mSpirit Airlines
Deal found 7/29$176
This CheapOair deal was found by Cheapflights users on 7/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/29:59 pmMKE - SAN
1 stop11h 30mMultiple Airlines
Mon 10/610:20 amSAN - MKE
1 stop6h 59mMultiple Airlines
Deal found 7/28$217
This Southwest deal was found by Cheapflights users on 7/28. 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.
Fri 12/510:30 amMKE - SAN
2 stops8h 25mSouthwest
Fri 12/1212:15 pmSAN - MKE
Nonstop4h 05mSouthwest
Deal found 7/28$224
This Alaska Airlines deal was found by Cheapflights users on 7/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/43:20 pmMKE - SAN
1 stop8h 37mAlaska Airlines
Wed 9/101:45 pmSAN - MKE
1 stop8h 17mAlaska Airlines
Deal found 7/28$228
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/198:10 amMKE - SAN
1 stop7h 46mAmerican Airlines
Sat 8/236:15 amSAN - MKE
1 stop5h 41mAmerican Airlines
Deal found 7/27$229
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Sat 8/235:00 amMKE - SAN
1 stop6h 35mUnited Airlines
Sat 8/232:21 pmSAN - MKE
2 stops7h 38mUnited Airlines
Deal found 7/26$234
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/157:58 pmMKE - SAN
1 stop5h 54mFrontier
Fri 8/2210:17 amSAN - MKE
1 stop6h 55mFrontier
Deal found 7/27$255
This Delta deal was found by Cheapflights users on 7/28. 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.
Sun 8/319:38 amMKE - SAN
1 stop6h 20mDelta
Wed 9/1011:23 amSAN - MKE
1 stop8h 10mDelta
Deal found 7/28$257

Cheapflights Fare Finder

 
Customize your flight search to find flights from Milwaukee 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 July 29, 2025.
Use the filters below to find and compare flights from Milwaukee to San Diego that are best for you.

Fly from

Milwaukee

Fly to

San Diego

Route

Depart

Return

Price

MilwaukeeSan Diego

MKE - SAN

MKESAN

Milwaukee-Mitchell

Thu 8/14

9:25 pm-7:21 am

1 stop11h 56m

San Diego

Thu 8/21

6:15 am-8:30 pm

1 stop12h 15m

$176

MilwaukeeSan Diego

MKE - SAN

MKESAN

Milwaukee-Mitchell

Thu 10/2

9:59 pm-7:29 am

1 stop11h 30m

San Diego

Mon 10/6

10:20 am-7:19 pm

1 stop6h 59m

$217

MilwaukeeSan Diego

MKE - SAN

MKESAN

Milwaukee-Mitchell

Thu 9/4

3:20 pm-9:57 pm

1 stop8h 37m

San Diego

Wed 9/10

1:45 pm-12:02 am

1 stop8h 17m

$228

MilwaukeeSan Diego

MKE - SAN

MKESAN

Milwaukee-Mitchell

Tue 8/19

8:10 am-1:56 pm

1 stop7h 46m

San Diego

Sat 8/23

6:15 am-1:56 pm

1 stop5h 41m

$229

MilwaukeeSan Diego

MKE - SAN

MKESAN

Milwaukee-Mitchell

Sat 8/23

5:00 am-9:35 am

1 stop6h 35m

San Diego

Sat 8/23

2:21 pm-11:59 pm

2 stops7h 38m

$234

MilwaukeeSan Diego

MKE - SAN

MKESAN

Milwaukee-Mitchell

Fri 8/15

7:58 pm-11:52 pm

1 stop5h 54m

San Diego

Fri 8/22

10:17 am-7:12 pm

1 stop6h 55m

$255

MilwaukeeSan Diego

MKE - SAN

MKESAN

Milwaukee-Mitchell

Sun 8/31

9:38 am-1:58 pm

1 stop6h 20m

San Diego

Wed 9/10

11:23 am-9:33 pm

1 stop8h 10m

$257

MilwaukeeSan Diego

MKE - SAN

MKESAN

Milwaukee-Mitchell

Fri 10/17

1:35 pm-3:50 pm

Nonstop4h 15m

San Diego

Mon 10/20

9:10 pm-9:35 am

1 stop10h 25m

$264

MilwaukeeSan Diego

MKE - SAN

MKESAN

Milwaukee-Mitchell

Mon 10/20

11:28 am-6:42 pm

1 stop9h 14m

$73

MilwaukeeSan Diego

MKE - SAN

MKESAN

Milwaukee-Mitchell

Fri 10/3

1:35 pm-3:50 pm

Nonstop4h 15m

$105

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 17 results
1
2

Best time to book a flight from Milwaukee to San Diego

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

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

Use this chart to determine the optimal time to book a round-trip flight from Milwaukee to San Diego. Price data was last updated on July 25, 2025.

The price you pay for your flight from Milwaukee to San Diego may vary depending on when you book. For the best chance of a lower fare, look to book 60 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, August is the cheapest month in which you can book a flight from Milwaukee to San Diego (average of $286). Flying from Milwaukee to San Diego in March is currently the most expensive (average of $366). 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 MKE to SAN?

Find hourly flight availability from Milwaukee 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 July 29, 2025.

When flying from Milwaukee to San Diego, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 29% versus a flight at noon.

What is the cheapest day to fly from Milwaukee to San Diego?

Use this chart to determine the cheapest time to fly round-trip from Milwaukee to San Diego. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Milwaukee to San Diego flight should consider departing on Tuesday at noon when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 July 29, 2025.
Read through reviews of airlines operating flights from Milwaukee to San Diego, such as Alaska Airlines, Southwest, and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,238 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,977 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,605 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,899 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Milwaukee 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 are the cheapest airlines flying from Milwaukee to San Diego round-trip?

    Spirit Airlines, at $176, was found to be the cheapest airline from Milwaukee to San Diego.Alternate airlines to your destination round-trip include Alaska Airlines and American Airlines. Spirit Airlines is priced at 56% lower than the current average price of a flight leaving 3 months from now.

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

    For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $73. Users have also found prices from $105 and $113 on Southwest and American Airlines, respectively.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Milwaukee to San Diego (average of $286). Flying from Milwaukee to San Diego in March is currently the most expensive (average of $366). 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
Poway
National City
Lemon Grove
Imperial Beach
La Mesa
Alpine
Santee

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Milwaukee to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Milwaukee to San Diego

Discover the top 6 airlines that operate flights from Milwaukee 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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$112Average$241FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$161Average$258FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$219Average$411FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$259Average$433FlexibilityNo cancel feeOn-time69%
DeltaCheapest$278Average$423FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$326Average$443FlexibilityNo cancel feeOn-time63%

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