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Cheap flights from Milwaukee to Los Angeles from $178

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 7/14. 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

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Find the cheapest flights from Milwaukee to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
7:02 am - 2:09 pm
MKE
-
ONT
9h 07m
1 stop
Alaska Airlines Logo
12:00 pm - 11:59 pm
ONT
-
MKE
9h 59m
1 stop
$331Alaska Airlines
週二, 9月 1 - 週三, 9月 2
American Airlines Logo
7:00 am - 1:25 pm
MKE
-
ONT
8h 25m
1 stop
American Airlines Logo
7:11 pm - 8:01 am
ONT
-
MKE
10h 50m
2 stops
$336American Airlines
週四, 9月 10 - 週四, 9月 17
American Airlines Logo
5:43 pm - 11:36 pm
MKE
-
ONT
7h 53m
1 stop
American Airlines Logo
12:37 pm - 9:48 pm
ONT
-
MKE
7h 11m
1 stop
$359American Airlines
週四, 9月 10 - 週四, 9月 17
American Airlines Logo
12:22 pm - 10:43 pm
MKE
-
ONT
12h 21m
2 stops
American Airlines Logo
7:11 pm - 8:01 am
ONT
-
MKE
10h 50m
2 stops
$370American Airlines
週四, 9月 10 - 週四, 9月 17
Alaska Airlines Logo
7:02 am - 2:09 pm
MKE
-
ONT
9h 07m
1 stop
Alaska Airlines Logo
12:00 pm - 11:59 pm
ONT
-
MKE
9h 59m
1 stop
$395Alaska Airlines
週二, 9月 1 - 週三, 9月 2
Alaska Airlines Logo
4:44 pm - 10:54 pm
MKE
-
ONT
8h 10m
1 stop
Alaska Airlines Logo
6:00 am - 3:48 pm
ONT
-
MKE
7h 48m
1 stop
$396Alaska Airlines
週二, 11月 3 - 週六, 11月 7
Southwest Logo
6:25 am - 11:30 am
MKE
-
ONT
7h 05m
1 stop
Southwest Logo
6:30 am - 6:25 pm
ONT
-
MKE
9h 55m
2 stops
$400Southwest
週三, 7月 1 - 週三, 7月 8
Delta Logo
4:36 pm - 10:26 pm
MKE
-
ONT
7h 50m
1 stop
Delta Logo
7:05 am - 5:33 pm
ONT
-
MKE
8h 28m
1 stop
$404Delta
週四, 9月 17 - 週日, 9月 20
Southwest Logo
4:10 pm - 10:45 pm
MKE
-
ONT
8h 35m
2 stops
Southwest Logo
8:05 am - 6:25 pm
ONT
-
MKE
8h 20m
2 stops
$405Southwest
週三, 7月 1 - 週三, 7月 8
United Airlines Logo
5:00 am - 12:50 pm
MKE
-
ONT
9h 50m
2 stops
United Airlines Logo
5:00 am - 1:26 pm
ONT
-
MKE
6h 26m
1 stop
$409United Airlines
週三, 9月 23 - 週四, 9月 24

American Airlines flights from Milwaukee to Ontario

Our best American Airlines deals on Milwaukee to Ontario flight tickets
American Airlines
Sep 10
MKE7:00 amMilwaukee-Mitchell
8h 25m
1 stop
ONT1:25 pmOntario
Sep 17
ONT7:11 pmOntario
10h 50m
2 stops
MKE8:01 amMilwaukee-Mitchell
$336
American Airlines
Sep 10
MKE5:43 pmMilwaukee-Mitchell
7h 53m
1 stop
ONT11:36 pmOntario
Sep 17
ONT12:37 pmOntario
7h 11m
1 stop
MKE9:48 pmMilwaukee-Mitchell
$359
American Airlines
Sep 10
MKE12:22 pmMilwaukee-Mitchell
12h 21m
2 stops
ONT10:43 pmOntario
Sep 17
ONT7:11 pmOntario
10h 50m
2 stops
MKE8:01 amMilwaukee-Mitchell
$370

Delta flights from Milwaukee to Ontario

Our best Delta deals on Milwaukee to Ontario flight tickets
Delta
Sep 17
MKE4:36 pmMilwaukee-Mitchell
7h 50m
1 stop
ONT10:26 pmOntario
Sep 20
ONT7:05 amOntario
8h 28m
1 stop
MKE5:33 pmMilwaukee-Mitchell
$404
Delta
Jul 1
MKE6:35 amMilwaukee-Mitchell
7h 35m
1 stop
ONT12:10 pmOntario
Jul 14
ONT10:00 pmOntario
9h 07m
1 stop
MKE9:07 amMilwaukee-Mitchell
$427
Delta
Sep 24
MKE7:30 amMilwaukee-Mitchell
6h 40m
1 stop
ONT12:10 pmOntario
Sep 27
ONT10:00 pmOntario
9h 06m
1 stop
MKE9:06 amMilwaukee-Mitchell
$451

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 6月 4, 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

週二 9/1

7:02 am-2:09 pm

1 stop9h 07m

Ontario

週三 9/2

12:00 pm-11:59 pm

1 stop9h 59m

$331

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

週四 9/10

7:00 am-1:25 pm

1 stop8h 25m

Ontario

週四 9/17

7:11 pm-8:01 am

2 stops10h 50m

$336
Quickest round-trip

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

週四 9/10

5:43 pm-11:36 pm

1 stop7h 53m

Ontario

週四 9/17

12:37 pm-9:48 pm

1 stop7h 11m

$359

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

週四 9/10

12:22 pm-10:43 pm

2 stops12h 21m

Ontario

週四 9/17

7:11 pm-8:01 am

2 stops10h 50m

$370

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

週二 9/1

7:02 am-2:09 pm

1 stop9h 07m

Ontario

週三 9/2

12:00 pm-11:59 pm

1 stop9h 59m

$395

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

週二 11/3

4:44 pm-10:54 pm

1 stop8h 10m

Ontario

週六 11/7

6:00 am-3:48 pm

1 stop7h 48m

$396

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

週三 7/1

6:25 am-11:30 am

1 stop7h 05m

Ontario

週三 7/8

6:30 am-6:25 pm

2 stops9h 55m

$400

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

週四 9/17

4:36 pm-10:26 pm

1 stop7h 50m

Ontario

週日 9/20

7:05 am-5:33 pm

1 stop8h 28m

$404

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

週三 7/1

4:10 pm-10:45 pm

2 stops8h 35m

Ontario

週三 7/8

8:05 am-6:25 pm

2 stops8h 20m

$405

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

週三 9/23

5:00 am-12:50 pm

2 stops9h 50m

Ontario

週四 9/24

5:00 am-1:26 pm

1 stop6h 26m

$409

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 $364.

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

5h 40m

Direct flights

None
The fastest flight from Milwaukee to Ontario takes 5h 40m
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. 5h 40m 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
9,773 reviews
Search United Airlines flights
SouthwestPriceFrom $316Free CancellationRating
8.0
4,256 reviews
Search Southwest flights
American AirlinesPriceFrom $341Free CancellationRating
7.1
11,641 reviews
Search American Airlines flights

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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