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Cheap flights from Milwaukee to Los Angeles from $162

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 7/28. 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.
Delta Logo
7:00 am - 12:10 pm
MKE
-
ONT
7h 10m
1 stop
Delta Logo
12:00 pm - 11:53 pm
ONT
-
MKE
9h 53m
1 stop
$323Delta
Tue, Jul 28 - Tue, Aug 18
Delta Logo
5:30 am - 11:07 am
MKE
-
ONT
7h 37m
1 stop
Delta Logo
10:00 pm - 9:06 am
ONT
-
MKE
9h 06m
1 stop
$325Delta
Wed, Sep 16 - Mon, Sep 21
American Airlines Logo
2:39 pm - 6:15 pm
MKE
-
ONT
5h 36m
1 stop
American Airlines Logo
6:15 am - 1:54 pm
ONT
-
MKE
5h 39m
1 stop
$326American Airlines
Thu, Aug 13 - Sat, Aug 22
Delta Logo
4:46 pm - 10:26 pm
MKE
-
ONT
7h 40m
1 stop
Delta Logo
10:00 pm - 9:06 am
ONT
-
MKE
9h 06m
1 stop
$327Delta
Thu, Sep 17 - Mon, Sep 21
Southwest Logo
3:10 pm - 8:55 pm
MKE
-
ONT
7h 45m
2 stops
Southwest Logo
6:40 am - 2:30 pm
ONT
-
MKE
5h 50m
1 stop
$328Southwest
Tue, Aug 11 - Tue, Aug 18
Southwest Logo
6:40 am - 12:40 pm
MKE
-
ONT
8h 00m
2 stops
Southwest Logo
9:40 am - 7:55 pm
ONT
-
MKE
8h 15m
2 stops
$333Southwest
Wed, Aug 12 - Wed, Aug 19
Southwest Logo
5:40 pm - 10:00 pm
MKE
-
ONT
6h 20m
1 stop
Southwest Logo
1:50 pm - 9:25 pm
ONT
-
MKE
5h 35m
1 stop
$341Southwest
Wed, Aug 12 - Wed, Aug 19
Southwest Logo
5:20 pm - 8:55 pm
MKE
-
ONT
5h 35m
1 stop
Southwest Logo
11:55 pm - 11:10 am
ONT
-
MKE
9h 15m
1 stop
$346Southwest
Wed, Aug 5 - Sat, Aug 8
American Airlines Logo
6:40 pm - 11:59 pm
MKE
-
ONT
7h 19m
1 stop
American Airlines Logo
12:33 pm - 10:57 pm
ONT
-
MKE
8h 24m
1 stop
$352American Airlines
Tue, Jul 28 - Tue, Aug 18
American Airlines Logo
5:02 am - 12:03 pm
MKE
-
ONT
9h 01m
2 stops
American Airlines Logo
12:33 pm - 10:57 pm
ONT
-
MKE
8h 24m
1 stop
$357American Airlines
Wed, Aug 5 - Sat, Aug 8

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Southwest flights from Milwaukee to Ontario

Our best Southwest deals on Milwaukee to Ontario flight tickets
Southwest
Aug 11
MKE3:10 pmMilwaukee-Mitchell
7h 45m
2 stops
ONT8:55 pmOntario
Aug 18
ONT6:40 amOntario
5h 50m
1 stop
MKE2:30 pmMilwaukee-Mitchell
$328
Southwest
Aug 12
MKE6:40 amMilwaukee-Mitchell
8h 00m
2 stops
ONT12:40 pmOntario
Aug 19
ONT9:40 amOntario
8h 15m
2 stops
MKE7:55 pmMilwaukee-Mitchell
$333
Southwest
Aug 12
MKE5:40 pmMilwaukee-Mitchell
6h 20m
1 stop
ONT10:00 pmOntario
Aug 19
ONT1:50 pmOntario
5h 35m
1 stop
MKE9:25 pmMilwaukee-Mitchell
$341

Delta flights from Milwaukee to Ontario

Our best Delta deals on Milwaukee to Ontario flight tickets
Delta
Jul 28
MKE7:00 amMilwaukee-Mitchell
7h 10m
1 stop
ONT12:10 pmOntario
Aug 18
ONT12:00 pmOntario
9h 53m
1 stop
MKE11:53 pmMilwaukee-Mitchell
$323
Delta
Sep 16
MKE5:30 amMilwaukee-Mitchell
7h 37m
1 stop
ONT11:07 amOntario
Sep 21
ONT10:00 pmOntario
9h 06m
1 stop
MKE9:06 amMilwaukee-Mitchell
$325
Delta
Sep 17
MKE4:46 pmMilwaukee-Mitchell
7h 40m
1 stop
ONT10:26 pmOntario
Sep 21
ONT10:00 pmOntario
9h 06m
1 stop
MKE9:06 amMilwaukee-Mitchell
$327

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 June 30, 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

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Tue 7/28

7:00 am-12:10 pm

1 stop7h 10m

Ontario

Tue 8/18

12:00 pm-11:53 pm

1 stop9h 53m

$323

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 9/16

5:30 am-11:07 am

1 stop7h 37m

Ontario

Mon 9/21

10:00 pm-9:06 am

1 stop9h 06m

$325
Quickest round-trip

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 8/13

2:39 pm-6:15 pm

1 stop5h 36m

Ontario

Sat 8/22

6:15 am-1:54 pm

1 stop5h 39m

$326

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 9/17

4:46 pm-10:26 pm

1 stop7h 40m

Ontario

Mon 9/21

10:00 pm-9:06 am

1 stop9h 06m

$327

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Tue 8/11

3:10 pm-8:55 pm

2 stops7h 45m

Ontario

Tue 8/18

6:40 am-2:30 pm

1 stop5h 50m

$328

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 8/12

6:40 am-12:40 pm

2 stops8h 00m

Ontario

Wed 8/19

9:40 am-7:55 pm

2 stops8h 15m

$333

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 8/12

5:40 pm-10:00 pm

1 stop6h 20m

Ontario

Wed 8/19

1:50 pm-9:25 pm

1 stop5h 35m

$341

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 8/5

5:20 pm-8:55 pm

1 stop5h 35m

Ontario

Sat 8/8

11:55 pm-11:10 am

1 stop9h 15m

$346

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Tue 7/28

6:40 pm-11:59 pm

1 stop7h 19m

Ontario

Tue 8/18

12:33 pm-10:57 pm

1 stop8h 24m

$352

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 8/5

5:02 am-12:03 pm

2 stops9h 01m

Ontario

Sat 8/8

12:33 pm-10:57 pm

1 stop8h 24m

$357

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 58m

Direct flights

None
The fastest flight from Milwaukee to Ontario takes 6h 58m
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 58m 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
SouthwestPriceFrom $316Free CancellationRating
7.9
4,247 reviews
Search Southwest flights
American AirlinesPriceFrom $344Free CancellationRating
7.1
11,762 reviews
Search American Airlines flights
United AirlinesPriceFrom $371Free CancellationRating
7.4
9,901 reviews
Search United 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. 4,247 users have rated Southwest on momondo, with an average score of 7.9/10.

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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