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$96+ 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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — SAN
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
1 adult, Economy
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Cheapflights Tip: The best prices from Milwaukee-Mitchell to San Diego are usually found in January or May, booked 60 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

Cheap 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 January 26, 2026.

This Expedia deal was found by Cheapflights users on 1/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/97:46 pm
MKE
-
SAN
1 stop27h 28m
Frontier
Thu 3/129:18 pm
SAN
-
MKE
1 stop19h 33m
Frontier
Deal found 1/24$228
This Frontier deal was found by Cheapflights users on 1/26. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/247:37 pm
MKE
-
SAN
1 stop6h 24m
Frontier
Mon 4/276:25 am
SAN
-
MKE
1 stop10h 34m
Frontier
Deal found 1/26$235
This Expedia deal was found by Cheapflights users on 1/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/233:09 pm
MKE
-
SAN
1 stop9h 27m
Multiple Airlines
Mon 4/276:25 am
SAN
-
MKE
1 stop10h 34m
Multiple Airlines
Deal found 1/26$241
This American Airlines deal was found by Cheapflights users on 1/24. 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 2/284:47 pm
MKE
-
SAN
1 stop7h 47m
American Airlines
Tue 3/37:10 am
SAN
-
MKE
1 stop7h 49m
American Airlines
Deal found 1/24$244
This Travelocity deal was found by Cheapflights users on 1/25. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/53:47 pm
MKE
-
SAN
1 stop9h 16m
Multiple Airlines
Mon 3/99:00 am
SAN
-
MKE
1 stop7h 51m
Multiple Airlines
Deal found 1/25$255
This American Airlines deal was found by Cheapflights users on 1/24. 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.
Wed 2/251:13 pm
MKE
-
SAN
1 stop9h 07m
American Airlines
Mon 3/210:43 pm
SAN
-
MKE
1 stop10h 20m
American Airlines
Deal found 1/24$257
This Frontier deal was found by Cheapflights users on 1/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/237:15 pm
MKE
-
SAN
1 stop6h 53m
Frontier
Mon 3/306:25 am
SAN
-
MKE
1 stop9h 55m
Frontier
Deal found 1/24$259
This United Airlines deal was found by Cheapflights users on 1/26. 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.
Sun 3/15:00 am
MKE
-
SAN
1 stop6h 47m
United Airlines
Tue 3/1011:28 am
SAN
-
MKE
2 stops8h 22m
United Airlines
Deal found 1/26$262
This Expedia deal was found by Cheapflights users on 1/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/67:46 pm
MKE
-
SAN
1 stop6h 22m
Frontier
Mon 3/96:25 am
SAN
-
MKE
1 stop10h 26m
Frontier
Deal found 1/25$268
This Delta deal was found by Cheapflights users on 1/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/2612:20 pm
MKE
-
SAN
1 stop10h 17m
Delta
Sun 3/110:20 pm
SAN
-
MKE
1 stop8h 49m
Delta
Deal found 1/26$271
This Delta deal was found by Cheapflights users on 1/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/251:35 pm
MKE
-
SAN
1 stop9h 00m
Delta
Thu 3/510:20 pm
SAN
-
MKE
1 stop8h 49m
Delta
Deal found 1/24$277
This United Airlines deal was found by Cheapflights users on 1/25. 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.
Mon 3/94:10 pm
MKE
-
SAN
1 stop6h 53m
United Airlines
Thu 3/1211:03 am
SAN
-
MKE
2 stops8h 18m
United Airlines
Deal found 1/25$282

Find 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 January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$228
(Expedia)

One-way from

$96
(Expedia)

Popular in

June

Cheapest in

January

Average price

$318

Good round-trip deal

$271 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 Milwaukee-Mitchell to San Diego
Search Deals
One-way flight from Milwaukee-Mitchell to San Diego
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($28 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 January 2026
Search Deals
Price to beat on a round-trip flight from Milwaukee-Mitchell to San Diego.
Search Deals

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 January 26, 2026.
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

Mon 3/16

3:55 pm-11:09 pm

1 stop9h 14m

San Diego

Tue 3/17

10:30 pm-9:04 am

1 stop8h 34m

$277

MilwaukeeSan Diego

MKE - SAN

MKESAN

Milwaukee-Mitchell

Wed 4/15

7:20 am-12:08 pm

1 stop6h 48m

San Diego

Mon 4/20

9:45 pm-9:22 am

1 stop9h 37m

$277

MilwaukeeSan Diego

MKE - SAN

MKESAN

Milwaukee-Mitchell

Fri 6/5

1:00 pm-6:23 pm

1 stop7h 23m

San Diego

Fri 6/12

9:40 pm-9:23 am

1 stop9h 43m

$277

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

$277

MilwaukeeSan Diego

MKE - SAN

MKESAN

Milwaukee-Mitchell

Sat 5/30

10:25 am-6:38 pm

1 stop10h 13m

San Diego

Wed 6/3

6:20 am-4:42 pm

1 stop8h 22m

$277

MilwaukeeSan Diego

MKE - SAN

MKESAN

Milwaukee-Mitchell

Sun 3/1

5:03 pm-11:02 pm

1 stop7h 59m

San Diego

Wed 3/4

1:20 pm-9:32 pm

1 stop6h 12m

$277

MilwaukeeSan Diego

MKE - SAN

MKESAN

Milwaukee-Mitchell

Tue 3/3

5:03 pm-11:02 pm

1 stop7h 59m

San Diego

Thu 3/5

6:25 am-4:08 pm

1 stop7h 43m

$277

MilwaukeeSan Diego

MKE - SAN

MKESAN

Milwaukee-Mitchell

Mon 6/1

4:42 pm-11:59 pm

1 stop9h 17m

San Diego

Thu 6/4

10:52 am-11:57 pm

1 stop11h 05m

$291

MilwaukeeSan Diego

MKE - SAN

MKESAN

Milwaukee-Mitchell

Mon 3/16

4:48 pm-10:59 pm

1 stop8h 11m

San Diego

Fri 3/20

9:55 pm-9:09 am

1 stop9h 14m

$308

MilwaukeeSan Diego

MKE - SAN

MKESAN

Milwaukee-Mitchell

Fri 3/13

4:48 pm-10:59 pm

1 stop8h 11m

San Diego

Fri 3/20

9:55 pm-9:09 am

1 stop9h 14m

$308

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 19 results
1
2

Compare providers for flights from Milwaukee 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 Milwaukee to San Diego in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*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 Milwaukee-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Milwaukee-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Milwaukee-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Milwaukee-San Diego flights, Cheapflights users trust FlightHub the most. FlightHub 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 Milwaukee-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 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 January 23, 2026.

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, April is the cheapest month in which you can book a flight from Milwaukee to San Diego (average of $84). Flying from Milwaukee to San Diego in May is currently the most expensive (average of $186). 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 January 26, 2026.

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

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 January 26, 2026.
Read through reviews of airlines operating flights from Milwaukee to San Diego, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,268 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,268 reviews
Southwest
8.0
Very good
4,268 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
7.9
Good
8,111 reviews
Southwest
8.0
Very good
4,268 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
9,199 reviews
Southwest
8.0
Very good
4,268 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
11,189 reviews
Southwest
8.0
Very good
4,268 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.7
Fair
3,058 reviews
Southwest
8.0
Very good
4,268 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

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.

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

    The Milwaukee-Mitchell to San Diego flight path was viewed by 2 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    For as low as $277, Delta can have you in San Diego from Milwaukee in 9h 14m. Airlines will cover a distance of 1735 mi.

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

    Frontier, at $140, was found to be the cheapest airline from Milwaukee to San Diego.Alternate airlines to your destination round-trip include Spirit Airlines and American Airlines. Frontier is priced at 64% 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 $79. Users have also found prices from $105 and $118 on Frontier and United Airlines, respectively.

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

    Looking for the cheapest flight from Milwaukee to San Diego? While on average our users pay $368, our data indicates the cheapest price to be $249. The most popular route (Milwaukee-Mitchell - San Diego), is priced around $234.

  • 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, April is the cheapest month in which you can book a flight from Milwaukee to San Diego (average of $84). Flying from Milwaukee to San Diego in May is currently the most expensive (average of $186). 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

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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 January 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$140Average$282FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$173Average$243FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$216Average$403FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$235Average$372FlexibilityNo cancel feeOn-time69%
DeltaCheapest$256Average$378FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$275Average$436FlexibilityNo cancel feeOn-time63%

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