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Cheap flights from Milwaukee to Los Angeles from $185

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.
American Airlines Logo
6:40 pm - 11:59 pm
MKE
-
ONT
7h 19m
1 stop
American Airlines Logo
2:27 pm - 10:57 pm
ONT
-
MKE
6h 30m
1 stop
$366American Airlines
Tue, Aug 4 - Tue, Aug 11
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
$369American Airlines
Tue, Jul 28 - Tue, Aug 18
American Airlines Logo
7:26 am - 12:02 pm
MKE
-
ONT
6h 36m
1 stop
American Airlines Logo
1:11 pm - 11:34 pm
ONT
-
MKE
8h 23m
2 stops
$374American Airlines
Wed, Jul 15 - Tue, Jul 21
Southwest Logo
5:00 am - 11:30 am
MKE
-
ONT
8h 30m
2 stops
Southwest Logo
5:30 am - 3:00 pm
ONT
-
MKE
7h 30m
2 stops
$379Southwest
Wed, Jul 15 - Tue, Jul 21
Southwest Logo
1:30 pm - 8:10 pm
MKE
-
ONT
8h 40m
1 stop
Southwest Logo
12:50 pm - 9:00 pm
ONT
-
MKE
6h 10m
1 stop
$386Southwest
Sat, Aug 15 - Mon, Aug 17
American Airlines Logo
7:21 am - 1:22 pm
MKE
-
ONT
8h 01m
1 stop
American Airlines Logo
1:11 pm - 11:34 pm
ONT
-
MKE
8h 23m
2 stops
$391American Airlines
Wed, Jul 8 - Wed, Jul 29
Delta Logo
2:59 pm - 9:50 pm
MKE
-
ONT
8h 51m
1 stop
Delta Logo
10:00 pm - 9:06 am
ONT
-
MKE
9h 06m
1 stop
$394Delta
Tue, Jul 14 - Wed, Jul 22
Southwest Logo
4:10 pm - 10:20 pm
MKE
-
ONT
8h 10m
2 stops
Southwest Logo
10:10 am - 9:55 pm
ONT
-
MKE
9h 45m
2 stops
$396Southwest
Tue, Jul 21 - Tue, Jul 28
Southwest Logo
6:45 am - 10:20 am
MKE
-
ONT
5h 35m
1 stop
Southwest Logo
12:50 pm - 9:00 pm
ONT
-
MKE
6h 10m
1 stop
$403Southwest
Mon, Sep 7 - Mon, Sep 14
Southwest Logo
6:45 am - 10:20 am
MKE
-
ONT
5h 35m
1 stop
Southwest Logo
5:15 am - 2:25 pm
ONT
-
MKE
7h 10m
2 stops
$408Southwest
Mon, Sep 7 - Mon, Sep 14

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United Airlines flights from Milwaukee to Ontario

Our best United Airlines deals on Milwaukee to Ontario flight tickets
United Airlines
Aug 26
MKE2:35 pmMilwaukee-Mitchell
8h 18m
1 stop
ONT8:53 pmOntario
Sep 1
ONT5:00 amOntario
6h 29m
1 stop
MKE1:29 pmMilwaukee-Mitchell
$469
United Airlines
Nov 17
MKE8:30 amMilwaukee-Mitchell
11h 25m
2 stops
ONT5:55 pmOntario
Nov 18
ONT6:46 amOntario
8h 52m
1 stop
MKE5:38 pmMilwaukee-Mitchell
$474
United Airlines
Nov 17
MKE7:50 amMilwaukee-Mitchell
12h 05m
2 stops
ONT5:55 pmOntario
Nov 18
ONT5:00 amOntario
10h 38m
2 stops
MKE5:38 pmMilwaukee-Mitchell
$479

Southwest flights from Milwaukee to Ontario

Our best Southwest deals on Milwaukee to Ontario flight tickets
Southwest
Jul 22
MKE5:00 amMilwaukee-Mitchell
8h 30m
2 stops
ONT11:30 amOntario
Jul 29
ONT4:10 pmOntario
6h 45m
1 stop
MKE12:55 amMilwaukee-Mitchell
$374
Southwest
Jul 15
MKE5:00 amMilwaukee-Mitchell
8h 30m
2 stops
ONT11:30 amOntario
Jul 21
ONT5:30 amOntario
7h 30m
2 stops
MKE3:00 pmMilwaukee-Mitchell
$379
Southwest
Aug 15
MKE1:30 pmMilwaukee-Mitchell
8h 40m
1 stop
ONT8:10 pmOntario
Aug 17
ONT12:50 pmOntario
6h 10m
1 stop
MKE9:00 pmMilwaukee-Mitchell
$386

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 23, 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 8/4

6:40 pm-11:59 pm

1 stop7h 19m

Ontario

Tue 8/11

2:27 pm-10:57 pm

1 stop6h 30m

$366

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

$369

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 7/15

7:26 am-12:02 pm

1 stop6h 36m

Ontario

Tue 7/21

1:11 pm-11:34 pm

2 stops8h 23m

$374

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 7/15

5:00 am-11:30 am

2 stops8h 30m

Ontario

Tue 7/21

5:30 am-3:00 pm

2 stops7h 30m

$379

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Sat 8/15

1:30 pm-8:10 pm

1 stop8h 40m

Ontario

Mon 8/17

12:50 pm-9:00 pm

1 stop6h 10m

$386

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 7/8

7:21 am-1:22 pm

1 stop8h 01m

Ontario

Wed 7/29

1:11 pm-11:34 pm

2 stops8h 23m

$391

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Tue 7/14

2:59 pm-9:50 pm

1 stop8h 51m

Ontario

Wed 7/22

10:00 pm-9:06 am

1 stop9h 06m

$394

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Tue 7/21

4:10 pm-10:20 pm

2 stops8h 10m

Ontario

Tue 7/28

10:10 am-9:55 pm

2 stops9h 45m

$396
Quickest round-trip

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Mon 9/7

6:45 am-10:20 am

1 stop5h 35m

Ontario

Mon 9/14

12:50 pm-9:00 pm

1 stop6h 10m

$403

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Mon 9/7

6:45 am-10:20 am

1 stop5h 35m

Ontario

Mon 9/14

5:15 am-2:25 pm

2 stops7h 10m

$408

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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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 April instead. Flights to Ontario in April, while not as cheap as those in January, still average around $371.

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 35m

Direct flights

None
The fastest flight from Milwaukee to Ontario takes 5h 35m
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 35m 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
9,875 reviews
Search United Airlines flights
SouthwestPriceFrom $316Free CancellationRating
7.9
4,242 reviews
Search Southwest flights
American AirlinesPriceFrom $341Free CancellationRating
7.1
11,746 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 $467, with the best Southwest deals starting from $316 round-trip. 4,242 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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