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Cheap flights from Milwaukee to Los Angeles from $132

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Milwaukee to Los Angeles departing on 8/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Milwaukee to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
5:40 pm - 10:00 pm
MKE
-
ONT
6h 20m
1 stop
Southwest Logo
7:05 am - 4:20 pm
ONT
-
MKE
7h 15m
1 stop
$262Southwest
Wed, Aug 19 - Sat, Aug 22
Southwest Logo
6:40 am - 12:40 pm
MKE
-
ONT
8h 00m
2 stops
Southwest Logo
7:05 am - 4:20 pm
ONT
-
MKE
7h 15m
1 stop
$267Southwest
Wed, Aug 19 - Sat, Aug 22
Southwest Logo
5:30 am - 9:55 am
MKE
-
ONT
6h 25m
1 stop
Southwest Logo
1:30 pm - 12:05 am
ONT
-
MKE
8h 35m
1 stop
$268Southwest
Thu, Oct 8 - Mon, Oct 12
Southwest Logo
5:45 am - 1:15 pm
MKE
-
ONT
9h 30m
2 stops
Southwest Logo
11:55 pm - 11:05 am
ONT
-
MKE
9h 10m
1 stop
$274Southwest
Thu, Oct 8 - Mon, Oct 12
Southwest Logo
6:20 am - 12:40 pm
MKE
-
ONT
8h 20m
2 stops
Southwest Logo
7:45 am - 6:30 pm
ONT
-
MKE
8h 45m
2 stops
$303Southwest
Wed, Sep 2 - Wed, Sep 16
Delta Logo
12:20 pm - 6:18 pm
MKE
-
ONT
7h 58m
1 stop
Delta Logo
10:59 pm - 9:22 am
ONT
-
MKE
8h 23m
1 stop
$323Delta
Thu, Dec 3 - Mon, Dec 7
Southwest Logo
6:20 am - 12:40 pm
MKE
-
ONT
8h 20m
2 stops
Southwest Logo
10:55 am - 9:25 pm
ONT
-
MKE
8h 30m
1 stop
$328Southwest
Wed, Aug 12 - Tue, Aug 18
Delta Logo
7:30 am - 12:16 pm
MKE
-
ONT
6h 46m
1 stop
Delta Logo
12:00 pm - 11:53 pm
ONT
-
MKE
9h 53m
1 stop
$334Delta
Sat, Aug 22 - Sat, Aug 29
United Airlines Logo
10:19 am - 6:16 pm
MKE
-
ONT
9h 57m
2 stops
United Airlines Logo
5:00 am - 3:47 pm
ONT
-
MKE
8h 47m
2 stops
$342United Airlines
Wed, Aug 19 - Sat, Aug 22
Delta Logo
4:17 pm - 9:52 pm
MKE
-
ONT
7h 35m
1 stop
Delta Logo
10:00 pm - 9:16 am
ONT
-
MKE
9h 16m
1 stop
$351Delta
Thu, Aug 20 - Mon, Aug 24

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Alaska Airlines flights from Milwaukee to Ontario

Our best Alaska Airlines deals on Milwaukee to Ontario flight tickets
Alaska Airlines
Nov 4
MKE4:44 pmMilwaukee-Mitchell
8h 10m
1 stop
ONT10:54 pmOntario
Nov 11
ONT6:00 amOntario
7h 48m
1 stop
MKE3:48 pmMilwaukee-Mitchell
$359
Alaska Airlines
Aug 18
MKE6:02 amMilwaukee-Mitchell
9h 07m
1 stop
ONT1:09 pmOntario
Aug 25
ONT12:00 pmOntario
9h 59m
1 stop
MKE11:59 pmMilwaukee-Mitchell
$396
Alaska Airlines
Aug 25
MKE7:02 amMilwaukee-Mitchell
9h 07m
1 stop
ONT2:09 pmOntario
Aug 31
ONT12:00 pmOntario
9h 59m
1 stop
MKE11:59 pmMilwaukee-Mitchell
$418

Southwest flights from Milwaukee to Ontario

Our best Southwest deals on Milwaukee to Ontario flight tickets
Southwest
Aug 19
MKE5:40 pmMilwaukee-Mitchell
6h 20m
1 stop
ONT10:00 pmOntario
Aug 22
ONT7:05 amOntario
7h 15m
1 stop
MKE4:20 pmMilwaukee-Mitchell
$262
Southwest
Aug 19
MKE6:40 amMilwaukee-Mitchell
8h 00m
2 stops
ONT12:40 pmOntario
Aug 22
ONT7:05 amOntario
7h 15m
1 stop
MKE4:20 pmMilwaukee-Mitchell
$267
Southwest
Oct 8
MKE5:30 amMilwaukee-Mitchell
6h 25m
1 stop
ONT9:55 amOntario
Oct 12
ONT1:30 pmOntario
8h 35m
1 stop
MKE12:05 amMilwaukee-Mitchell
$268

momondo Fare Finder

 
Customize your flight search to find flights from Milwaukee to Ontario 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, momondo users made 832,500 searches. Data last updated July 14, 2026.
Use the filters below to find and compare flights from Milwaukee to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 8/19

5:40 pm-10:00 pm

1 stop6h 20m

Ontario

Sat 8/22

7:05 am-4:20 pm

1 stop7h 15m

$262

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 8/19

6:40 am-12:40 pm

2 stops8h 00m

Ontario

Sat 8/22

7:05 am-4:20 pm

1 stop7h 15m

$267

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 10/8

5:30 am-9:55 am

1 stop6h 25m

Ontario

Mon 10/12

1:30 pm-12:05 am

1 stop8h 35m

$268

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 10/8

5:45 am-1:15 pm

2 stops9h 30m

Ontario

Mon 10/12

11:55 pm-11:05 am

1 stop9h 10m

$274

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 9/2

6:20 am-12:40 pm

2 stops8h 20m

Ontario

Wed 9/16

7:45 am-6:30 pm

2 stops8h 45m

$303

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 12/3

12:20 pm-6:18 pm

1 stop7h 58m

Ontario

Mon 12/7

10:59 pm-9:22 am

1 stop8h 23m

$323

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 8/12

6:20 am-12:40 pm

2 stops8h 20m

Ontario

Tue 8/18

10:55 am-9:25 pm

1 stop8h 30m

$328

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Sat 8/22

7:30 am-12:16 pm

1 stop6h 46m

Ontario

Sat 8/29

12:00 pm-11:53 pm

1 stop9h 53m

$334

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 8/19

10:19 am-6:16 pm

2 stops9h 57m

Ontario

Sat 8/22

5:00 am-3:47 pm

2 stops8h 47m

$342

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 8/20

4:17 pm-9:52 pm

1 stop7h 35m

Ontario

Mon 8/24

10:00 pm-9:16 am

1 stop9h 16m

$351

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Milwaukee to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Milwaukee and Ontario?

What is the cheapest month to fly to Ontario?

In general, January is the cheapest month to fly from Milwaukee to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $306. If you aren’t able to travel during the month of January, then book flights to Ontario from Milwaukee during September instead. Flights to Ontario in September, while not as cheap as those in January, still average around $327.

How have Milwaukee to Ontario flight prices changed over time?

When to book flights from Milwaukee to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Milwaukee to Ontario according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Milwaukee to Ontario (MKE to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Milwaukee to Ontario

Fastest flight time

6h 05m

Direct flights

None
The fastest flight from Milwaukee to Ontario takes 6h 05m
There are no direct flights from Milwaukee to Ontario. There are no popular flight routes from Milwaukee to Ontario.
Search flight deals

Frequently asked questions about flying from Milwaukee to Ontario

  • How far is Milwaukee-Mitchell to Ontario by plane?

    There are 1710.4 mi between Milwaukee-Mitchell and Ontario. 6h 05m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Milwaukee-Mitchell Airport to Ontario Airport?

    Prices for flights from Milwaukee-Mitchell Airport to Ontario Airport refresh daily.

  • How many operators does momondo search for flights from Milwaukee-Mitchell Airport to Ontario Airport?

  • How old do you have to be to fly from Milwaukee-Mitchell Airport to Ontario Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Milwaukee-Mitchell Airport to Ontario Airport.

  • What documentation or ID do you need to fly to Ontario Airport?

    The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Milwaukee to Ontario?

Best airlines flying from Milwaukee to Ontario

Compare and see reviews for airlines that fly from Milwaukee to Ontario with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $306Free CancellationRating
7.4
9,988 reviews
Search United Airlines flights
SouthwestPriceFrom $316Free CancellationRating
8.0
4,246 reviews
Search Southwest flights
American AirlinesPriceFrom $327Free CancellationRating
7.1
11,809 reviews
Search American Airlines flights

  • Southwest Flights From Milwaukee to Ontario

    Across 2 Southwest flights from Milwaukee to Ontario this week, the average price was $476, with the best Southwest deals starting from $316 round-trip. 4,246 users have rated Southwest on momondo, with an average score of 8.0/10.

Why use momondo?

Why should I use momondo to find a flight deal from Milwaukee to Ontario?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Milwaukee to Ontario for you.

Can I find flights from Milwaukee to Ontario with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Ontario from Milwaukee with this policy.

How can momondo help me find flights from Milwaukee to Ontario?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ontario from Milwaukee.

I’m not ready to book a flight from Milwaukee to Ontario right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Ontario from Milwaukee. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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