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Cheap flights from Milwaukee to Los Angeles from $126

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 4/24. 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
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
6:25 am - 10:15 am
MKE
-
ONT
5h 50m
1 stop
Southwest Logo
2:25 pm - 11:10 pm
ONT
-
MKE
6h 45m
1 stop
$387Southwest
Wed, May 13 - Wed, May 20
Southwest Logo
5:50 am - 11:55 am
MKE
-
ONT
8h 05m
2 stops
Southwest Logo
2:25 pm - 11:10 pm
ONT
-
MKE
6h 45m
1 stop
$392Southwest
Wed, May 13 - Wed, May 20
Delta Logo
6:45 am - 12:19 pm
MKE
-
ONT
7h 34m
1 stop
Delta Logo
1:29 pm - 9:33 pm
ONT
-
MKE
6h 04m
1 stop
$393Delta
Thu, May 7 - Tue, May 12
Southwest Logo
5:50 am - 11:55 am
MKE
-
ONT
8h 05m
2 stops
Southwest Logo
10:55 am - 9:35 pm
ONT
-
MKE
8h 40m
2 stops
$397Southwest
Wed, May 13 - Wed, May 20
American Airlines Logo
7:08 am - 1:18 pm
MKE
-
ONT
8h 10m
1 stop
American Airlines Logo
9:24 am - 10:27 pm
ONT
-
MKE
11h 03m
2 stops
$398American Airlines
Thu, May 7 - Wed, May 13
Alaska Airlines Logo
7:00 am - 2:32 pm
MKE
-
ONT
9h 32m
1 stop
Alaska Airlines Logo
12:04 pm - 11:59 pm
ONT
-
MKE
9h 55m
1 stop
$399Alaska Airlines
Thu, May 7 - Thu, May 14
American Airlines Logo
7:30 am - 11:34 am
MKE
-
ONT
6h 04m
1 stop
American Airlines Logo
6:15 am - 2:15 pm
ONT
-
MKE
6h 00m
1 stop
$402American Airlines
Thu, May 14 - Tue, May 19
Southwest Logo
6:10 am - 12:55 pm
MKE
-
ONT
8h 45m
2 stops
Southwest Logo
10:55 am - 9:35 pm
ONT
-
MKE
8h 40m
2 stops
$403Southwest
Thu, May 28 - Tue, Jun 2
Southwest Logo
2:00 pm - 9:20 pm
MKE
-
ONT
9h 20m
2 stops
Southwest Logo
10:55 am - 9:35 pm
ONT
-
MKE
8h 40m
2 stops
$407Southwest
Sat, May 23 - Wed, Jun 3
American Airlines Logo
7:30 am - 11:34 am
MKE
-
ONT
6h 04m
1 stop
American Airlines Logo
11:59 pm - 10:59 am
ONT
-
MKE
9h 00m
1 stop
$408American Airlines
Thu, May 14 - Mon, May 18

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American Airlines flights from Milwaukee to Ontario

Our best American Airlines deals on Milwaukee to Ontario flight tickets
American Airlines
May 7
MKE7:08 amMilwaukee-Mitchell
8h 10m
1 stop
ONT1:18 pmOntario
May 13
ONT9:24 amOntario
11h 03m
2 stops
MKE10:27 pmMilwaukee-Mitchell
$398
American Airlines
May 14
MKE7:30 amMilwaukee-Mitchell
6h 04m
1 stop
ONT11:34 amOntario
May 19
ONT6:15 amOntario
6h 00m
1 stop
MKE2:15 pmMilwaukee-Mitchell
$402
American Airlines
May 14
MKE7:30 amMilwaukee-Mitchell
6h 04m
1 stop
ONT11:34 amOntario
May 18
ONT11:59 pmOntario
9h 00m
1 stop
MKE10:59 amMilwaukee-Mitchell
$408

Southwest flights from Milwaukee to Ontario

Our best Southwest deals on Milwaukee to Ontario flight tickets
Southwest
May 13
MKE6:25 amMilwaukee-Mitchell
5h 50m
1 stop
ONT10:15 amOntario
May 20
ONT2:25 pmOntario
6h 45m
1 stop
MKE11:10 pmMilwaukee-Mitchell
$387
Southwest
May 13
MKE5:50 amMilwaukee-Mitchell
8h 05m
2 stops
ONT11:55 amOntario
May 20
ONT3:45 pmOntario
5h 25m
1 stop
MKE11:10 pmMilwaukee-Mitchell
$392
Southwest
May 13
MKE5:50 amMilwaukee-Mitchell
8h 05m
2 stops
ONT11:55 amOntario
May 20
ONT10:55 amOntario
8h 40m
2 stops
MKE9:35 pmMilwaukee-Mitchell
$397

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 April 19, 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

Wed 5/13

6:25 am-10:15 am

1 stop5h 50m

Ontario

Wed 5/20

2:25 pm-11:10 pm

1 stop6h 45m

$387

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 5/13

5:50 am-11:55 am

2 stops8h 05m

Ontario

Wed 5/20

2:25 pm-11:10 pm

1 stop6h 45m

$392

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 5/7

6:45 am-12:19 pm

1 stop7h 34m

Ontario

Tue 5/12

1:29 pm-9:33 pm

1 stop6h 04m

$393

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 5/13

5:50 am-11:55 am

2 stops8h 05m

Ontario

Wed 5/20

10:55 am-9:35 pm

2 stops8h 40m

$397

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 5/7

7:08 am-1:18 pm

1 stop8h 10m

Ontario

Wed 5/13

9:24 am-10:27 pm

2 stops11h 03m

$398

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 5/7

7:00 am-2:32 pm

1 stop9h 32m

Ontario

Thu 5/14

12:04 pm-11:59 pm

1 stop9h 55m

$399
Quickest round-trip

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 5/14

7:30 am-11:34 am

1 stop6h 04m

Ontario

Tue 5/19

6:15 am-2:15 pm

1 stop6h 00m

$402

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 5/28

6:10 am-12:55 pm

2 stops8h 45m

Ontario

Tue 6/2

10:55 am-9:35 pm

2 stops8h 40m

$403

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Sat 5/23

2:00 pm-9:20 pm

2 stops9h 20m

Ontario

Wed 6/3

10:55 am-9:35 pm

2 stops8h 40m

$407

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 5/14

7:30 am-11:34 am

1 stop6h 04m

Ontario

Mon 5/18

11:59 pm-10:59 am

1 stop9h 00m

$408

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
DeltaPriceFrom $300Free CancellationRating
7.9
8,422 reviews
Search Delta flights
SouthwestPriceFrom $316Free CancellationRating
8.0
4,327 reviews
Search Southwest flights
American AirlinesPriceFrom $324Free CancellationRating
7.1
11,620 reviews
Search American Airlines flights
United AirlinesPriceFrom $344Free CancellationRating
7.4
9,604 reviews
Search United 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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