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Cheap flights from Milwaukee to Los Angeles from $164

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 8/13. 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
$323American Airlines
Tue, Aug 4 - Tue, Aug 11
Southwest Logo
6:20 pm - 10:05 pm
MKE
-
ONT
5h 45m
1 stop
Southwest Logo
5:45 am - 1:25 pm
ONT
-
MKE
5h 40m
1 stop
$325Southwest
Thu, Aug 20 - Wed, Aug 26
American Airlines Logo
2:39 pm - 6:15 pm
MKE
-
ONT
5h 36m
1 stop
American Airlines Logo
7:05 am - 5:00 pm
ONT
-
MKE
7h 55m
1 stop
$327American Airlines
Wed, Aug 12 - Wed, Aug 19
Southwest Logo
6:20 am - 12:40 pm
MKE
-
ONT
8h 20m
2 stops
Southwest Logo
5:45 am - 1:25 pm
ONT
-
MKE
5h 40m
1 stop
$328Southwest
Wed, Aug 12 - Wed, Aug 19
Southwest Logo
3:10 pm - 8:55 pm
MKE
-
ONT
7h 45m
2 stops
Southwest Logo
10:55 am - 9:25 pm
ONT
-
MKE
8h 30m
2 stops
$333Southwest
Tue, Aug 18 - Tue, Aug 25
Southwest Logo
11:45 am - 7:25 pm
MKE
-
ONT
9h 40m
2 stops
Southwest Logo
5:45 am - 1:25 pm
ONT
-
MKE
5h 40m
1 stop
$346Southwest
Thu, Aug 20 - Wed, Aug 26
Southwest Logo
3:40 pm - 10:00 pm
MKE
-
ONT
8h 20m
2 stops
Southwest Logo
1:10 pm - 9:25 pm
ONT
-
MKE
6h 15m
1 stop
$357Southwest
Tue, Aug 4 - Tue, Aug 11
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
$359Alaska Airlines
Tue, Nov 17 - Wed, Nov 18
Southwest Logo
6:25 am - 11:30 am
MKE
-
ONT
7h 05m
1 stop
Southwest Logo
1:10 pm - 9:25 pm
ONT
-
MKE
6h 15m
1 stop
$361Southwest
Tue, Jul 28 - Tue, Aug 4
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
2 stops
$362Southwest
Wed, Aug 12 - Wed, Aug 19

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Southwest flights from Milwaukee to Ontario

Our best Southwest deals on Milwaukee to Ontario flight tickets
Southwest
Aug 20
MKE6:20 pmMilwaukee-Mitchell
5h 45m
1 stop
ONT10:05 pmOntario
Aug 26
ONT5:45 amOntario
5h 40m
1 stop
MKE1:25 pmMilwaukee-Mitchell
$325
Southwest
Aug 12
MKE6:20 amMilwaukee-Mitchell
8h 20m
2 stops
ONT12:40 pmOntario
Aug 19
ONT5:45 amOntario
5h 40m
1 stop
MKE1:25 pmMilwaukee-Mitchell
$328
Southwest
Aug 18
MKE3:10 pmMilwaukee-Mitchell
7h 45m
2 stops
ONT8:55 pmOntario
Aug 25
ONT10:55 amOntario
8h 30m
2 stops
MKE9:25 pmMilwaukee-Mitchell
$333

Alaska Airlines flights from Milwaukee to Ontario

Our best Alaska Airlines deals on Milwaukee to Ontario flight tickets
Alaska Airlines
Nov 17
MKE4:44 pmMilwaukee-Mitchell
8h 10m
1 stop
ONT10:54 pmOntario
Nov 18
ONT6:00 amOntario
7h 48m
1 stop
MKE3:48 pmMilwaukee-Mitchell
$359
Alaska Airlines
Jul 28
MKE7:26 amMilwaukee-Mitchell
17h 45m
2 stops
ONT11:11 pmOntario
Aug 18
ONT5:26 pmOntario
12h 23m
2 stops
MKE7:49 amMilwaukee-Mitchell
$451
Alaska Airlines
Jul 20
MKE2:59 pmMilwaukee-Mitchell
10h 12m
1 stop
ONT11:11 pmOntario
Jul 21
ONT2:05 pmOntario
7h 54m
1 stop
MKE11:59 pmMilwaukee-Mitchell
$568

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 6, 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

$323
Quickest round-trip

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 8/20

6:20 pm-10:05 pm

1 stop5h 45m

Ontario

Wed 8/26

5:45 am-1:25 pm

1 stop5h 40m

$325

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 8/12

2:39 pm-6:15 pm

1 stop5h 36m

Ontario

Wed 8/19

7:05 am-5:00 pm

1 stop7h 55m

$327

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 8/12

6:20 am-12:40 pm

2 stops8h 20m

Ontario

Wed 8/19

5:45 am-1:25 pm

1 stop5h 40m

$328

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Tue 8/18

3:10 pm-8:55 pm

2 stops7h 45m

Ontario

Tue 8/25

10:55 am-9:25 pm

2 stops8h 30m

$333

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 8/20

11:45 am-7:25 pm

2 stops9h 40m

Ontario

Wed 8/26

5:45 am-1:25 pm

1 stop5h 40m

$346

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Tue 8/4

3:40 pm-10:00 pm

2 stops8h 20m

Ontario

Tue 8/11

1:10 pm-9:25 pm

1 stop6h 15m

$357

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Tue 11/17

4:44 pm-10:54 pm

1 stop8h 10m

Ontario

Wed 11/18

6:00 am-3:48 pm

1 stop7h 48m

$359

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Tue 7/28

6:25 am-11:30 am

1 stop7h 05m

Ontario

Tue 8/4

1:10 pm-9:25 pm

1 stop6h 15m

$361

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 8/12

6:20 am-12:40 pm

2 stops8h 20m

Ontario

Wed 8/19

10:55 am-9:25 pm

2 stops8h 30m

$362

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 00m

Direct flights

None
The fastest flight from Milwaukee to Ontario takes 6h 00m
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 00m 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
4,251 reviews
Search Southwest flights
American AirlinesPriceFrom $344Free CancellationRating
7.1
11,782 reviews
Search American Airlines flights
United AirlinesPriceFrom $371Free CancellationRating
7.4
9,938 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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