$126 Cheap Flights from San Diego (SAN) to Milwaukee (MKE)

View $126 flight on Wed, Oct 8, 2025Opens in a new window

Popular airlines from San Diego Intl. Airport (SAN) to General Mitchell Intl. Airport (MKE)

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Cheap Flights from San Diego to Milwaukee (SAN-MKE)

Prices were available within the past 7 days and start at $126 for one-way flights and $219 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Tue, Oct 28 - Sat, Nov 1
SAN
San Diego
MKE
Milwaukee
$219 Roundtrip, found 4 days ago
$219
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Tue, Oct 28 from San Diego to Milwaukee, returning Sat, Nov 1, priced at $219 found 4 days ago
Southwest Airlines
Fri, Nov 14 - Tue, Nov 18
SAN
San Diego
MKE
Milwaukee
$224 Roundtrip, found 5 days ago
$224
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Fri, Nov 14 from San Diego to Milwaukee, returning Tue, Nov 18, priced at $224 found 5 days ago
American Airlines
Tue, Oct 28 - Sat, Nov 1
SAN
San Diego
MKE
Milwaukee
$229 Roundtrip, found 4 days ago
$229
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Oct 28 from San Diego to Milwaukee, returning Sat, Nov 1, priced at $229 found 4 days ago
American Airlines
Tue, Sep 2 - Wed, Sep 3
SAN
San Diego
MKE
Milwaukee
$231 Roundtrip, found 4 days ago
$231
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Sep 2 from San Diego to Milwaukee, returning Wed, Sep 3, priced at $231 found 4 days ago
United
Wed, Sep 3 - Tue, Sep 16
SAN
San Diego
MKE
Milwaukee
$236 Roundtrip, found 4 days ago
$236
Roundtrip
found 4 days ago
Select United flight, departing Wed, Sep 3 from San Diego to Milwaukee, returning Tue, Sep 16, priced at $236 found 4 days ago
Spirit Airlines
Sun, Aug 31 - Wed, Oct 1
SAN
San Diego
MKE
Milwaukee
$237 Roundtrip, found 6 days ago
$237
Roundtrip
found 6 days ago
Select Spirit Airlines flight, departing Sun, Aug 31 from San Diego to Milwaukee, returning Wed, Oct 1, priced at $237 found 6 days ago
Delta
Sat, Sep 20 - Tue, Sep 23
SAN
San Diego
MKE
Milwaukee
$246 Roundtrip, found 4 days ago
$246
Roundtrip
found 4 days ago
Select Delta flight, departing Sat, Sep 20 from San Diego to Milwaukee, returning Tue, Sep 23, priced at $246 found 4 days ago
United
Tue, Sep 23 - Thu, Oct 2
SAN
San Diego
MKE
Milwaukee
$249 Roundtrip, found 3 days ago
$249
Roundtrip
found 3 days ago
Select United flight, departing Tue, Sep 23 from San Diego to Milwaukee, returning Thu, Oct 2, priced at $249 found 3 days ago
Spirit Airlines
Sun, Aug 24 - Sun, Sep 7
SAN
San Diego
MKE
Milwaukee
$251 Roundtrip, found 1 hour ago
$251
Roundtrip
found 1 hour ago
Select Spirit Airlines flight, departing Sun, Aug 24 from San Diego to Milwaukee, returning Sun, Sep 7, priced at $251 found 1 hour ago
Alaska Airlines
Tue, Sep 23 - Thu, Oct 2
SAN
San Diego
MKE
Milwaukee
$251 Roundtrip, found 3 days ago
$251
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Tue, Sep 23 from San Diego to Milwaukee, returning Thu, Oct 2, priced at $251 found 3 days ago

Find the cheapest month to fly from San Diego (SAN) to Milwaukee (MKE)

October is typically the cheapest month to fly

From $130 - $427 per traveler.

Graph displaying average flight prices per month

Alternative airports near Milwaukee

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to General Mitchell Intl. MKE. Cheapest and Closest option available. Average driving time to city center is 13 minutes. Flights from $334
MKE
General Mitchell Intl.
CheapestClosest
Average driving time to city center13 min
Flights from $334
Flights from Carlsbad (CLD) to Milwaukee (MKE)
Origin airport
McClellan-Palomar
Destination airport
General Mitchell Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$158
Distance
1725 mi
Average flight time
9 hours 20 mins

San Diego to Milwaukee Flights

The cheapest times to fly from San Diego to Milwaukee

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Diego to Milwaukee are during the month of October. You can find some of the cheapest flights from San Diego to Milwaukee with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Diego to Milwaukee

Sunday is one of the best days to book for cheap flights from San Diego to Milwaukee: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Diego to Milwaukee

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Diego to Milwaukee in 2025. You can also book with separate airlines for your outbound and return journeys, from $126 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Diego to Milwaukee flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Diego to Milwaukee airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from San Diego Intl. Airport (SAN) to General Mitchell Intl. Airport (MKE) cost?
Pick up cheap return fares starting at $256 from San Diego Intl. Airport (SAN) to General Mitchell Intl. Airport (MKE). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Southwest Airlines flight leaving SAN on July 26 2025 and touching down at MKE. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from SAN to MKE?
The cheapest flights from SAN to MKE are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from SAN to MKE?
With prices as low as $105 for a one-way journey from SAN to MKE, Southwest Airlines is currently the cheapest carrier operating this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SAN on October 18 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from San Diego Intl. Airport (SAN) to General Mitchell Intl. Airport (MKE)?
Direct flights from San Diego Intl. Airport (SAN) to General Mitchell Intl. Airport (MKE) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SAN to MKE?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from San Diego Intl. Airport (SAN) to General Mitchell Intl. Airport (MKE)?
Book a flight from San Diego Intl. Airport (SAN) to General Mitchell Intl. Airport (MKE) that takes off before 3 PM to reduce the likelihood of delays. Departures after this hour have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from San Diego Intl. Airport (SAN) to General Mitchell Intl. Airport (MKE) last-minute?
Waiting until just before your departure to book a ticket from SAN to MKE often results in higher prices. While you may find some last-minute offers, they're not always guaranteed. Allow some flexibility in your schedule to maximize your chances of landing a bargain.
Is it cheaper to book a SAN to MKE flight and hotel package?
Opting for a SAN to MKE flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Choose from our impressive range of accommodations and then add activities, car rentals and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from San Diego Intl. Airport (SAN) to General Mitchell Intl. Airport (MKE)?
It's generally possible to reschedule or cancel your SAN to MKE flight. However, if it's been more than 24 hours since booking, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.