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Cheap flights from Milwaukee to Los Angeles from $198

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 7/7. 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

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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
Tue, Sep 1 - Wed, Sep 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
Thu, Sep 10 - Thu, Sep 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
Thu, Sep 10 - Thu, Sep 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
Thu, Sep 10 - Thu, Sep 17
Southwest Logo
6:20 pm - 10:20 pm
MKE
-
ONT
6h 00m
1 stop
Southwest Logo
2:50 pm - 10:20 pm
ONT
-
MKE
5h 30m
1 stop
$391Southwest
Wed, Jul 15 - Tue, Jul 21
Delta Logo
10:25 am - 6:18 pm
MKE
-
ONT
9h 53m
1 stop
Delta Logo
10:59 pm - 9:22 am
ONT
-
MKE
8h 23m
1 stop
$395Delta
Wed, Oct 7 - Wed, Oct 21
Southwest Logo
6:25 am - 12:55 pm
MKE
-
ONT
8h 30m
2 stops
Southwest Logo
4:10 pm - 12:55 am
ONT
-
MKE
6h 45m
1 stop
$396Southwest
Wed, Jul 15 - Tue, Jul 21
American Airlines Logo
5:06 am - 11:27 am
MKE
-
ONT
8h 21m
2 stops
American Airlines Logo
7:20 am - 5:00 pm
ONT
-
MKE
7h 40m
1 stop
$400American Airlines
Wed, Oct 7 - Wed, Oct 21
Southwest Logo
6:25 am - 12:55 pm
MKE
-
ONT
8h 30m
2 stops
Southwest Logo
5:30 am - 3:00 pm
ONT
-
MKE
7h 30m
2 stops
$401Southwest
Wed, Jul 15 - Tue, Jul 21
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
Thu, Sep 17 - Sun, Sep 20

Alaska Airlines flights from Milwaukee to Ontario

Our best Alaska Airlines deals on Milwaukee to Ontario flight tickets
Alaska Airlines
Sep 1
MKE7:02 amMilwaukee-Mitchell
9h 07m
1 stop
ONT2:09 pmOntario
Sep 2
ONT12:00 pmOntario
9h 59m
1 stop
MKE11:59 pmMilwaukee-Mitchell
$331
Alaska Airlines
Oct 28
MKE5:00 pmMilwaukee-Mitchell
8h 42m
1 stop
ONT11:42 pmOntario
Nov 2
ONT6:00 amOntario
7h 48m
1 stop
MKE3:48 pmMilwaukee-Mitchell
$410
Alaska Airlines
Sep 1
MKE8:20 amMilwaukee-Mitchell
12h 43m
2 stops
ONT7:03 pmOntario
Sep 2
ONT12:00 pmOntario
9h 59m
1 stop
MKE11:59 pmMilwaukee-Mitchell
$496

Delta flights from Milwaukee to Ontario

Our best Delta deals on Milwaukee to Ontario flight tickets
Delta
Oct 7
MKE10:25 amMilwaukee-Mitchell
9h 53m
1 stop
ONT6:18 pmOntario
Oct 21
ONT10:59 pmOntario
8h 23m
1 stop
MKE9:22 amMilwaukee-Mitchell
$395
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

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 2, 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 9/1

7:02 am-2:09 pm

1 stop9h 07m

Ontario

Wed 9/2

12:00 pm-11:59 pm

1 stop9h 59m

$331

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 9/10

7:00 am-1:25 pm

1 stop8h 25m

Ontario

Thu 9/17

7:11 pm-8:01 am

2 stops10h 50m

$336

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 9/10

5:43 pm-11:36 pm

1 stop7h 53m

Ontario

Thu 9/17

12:37 pm-9:48 pm

1 stop7h 11m

$359

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 9/10

12:22 pm-10:43 pm

2 stops12h 21m

Ontario

Thu 9/17

7:11 pm-8:01 am

2 stops10h 50m

$370
Quickest round-trip

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 7/15

6:20 pm-10:20 pm

1 stop6h 00m

Ontario

Tue 7/21

2:50 pm-10:20 pm

1 stop5h 30m

$391

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 10/7

10:25 am-6:18 pm

1 stop9h 53m

Ontario

Wed 10/21

10:59 pm-9:22 am

1 stop8h 23m

$395

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 7/15

6:25 am-12:55 pm

2 stops8h 30m

Ontario

Tue 7/21

4:10 pm-12:55 am

1 stop6h 45m

$396

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 10/7

5:06 am-11:27 am

2 stops8h 21m

Ontario

Wed 10/21

7:20 am-5:00 pm

1 stop7h 40m

$400

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 7/15

6:25 am-12:55 pm

2 stops8h 30m

Ontario

Tue 7/21

5:30 am-3:00 pm

2 stops7h 30m

$401

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 9/17

4:36 pm-10:26 pm

1 stop7h 50m

Ontario

Sun 9/20

7:05 am-5:33 pm

1 stop8h 28m

$404

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Los Angeles from

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 50m

Direct flights

None
The fastest flight from Milwaukee to Ontario takes 5h 50m
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 50m 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
9,778 reviews
Search United Airlines flights
SouthwestPriceFrom $316Free CancellationRating
8.0
4,257 reviews
Search Southwest flights
American AirlinesPriceFrom $341Free CancellationRating
7.1
11,640 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.

An easier way to manage your Ontario trip

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