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Cheap flights from Milwaukee to Los Angeles from $169

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 11/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:00 am - 5:07 pmMKE-ONT
13h 07m2 stops
Delta Logo
7:30 am - 9:15 pmONT-MKE
11h 45m2 stops
$296Delta
Find Deal
Sat, Dec 13 - Sat, Jan 10
Delta Logo
5:11 pm - 11:04 pmMKE-ONT
7h 53m1 stop
Delta Logo
12:40 pm - 10:34 amONT-MKE
19h 54m2 stops
$316Delta
Find Deal
Tue, Dec 9 - Sat, Dec 13
Alaska Airlines Logo
3:47 pm - 10:44 pmMKE-ONT
8h 57m1 stop
Alaska Airlines Logo
4:02 pm - 2:51 pmONT-MKE
20h 49m1 stop
$323Alaska Airlines
Find Deal
Wed, Mar 4 - Tue, Mar 10
Alaska Airlines Logo
3:53 pm - 8:36 pmMKE-ONT
30h 43m1 stop
Alaska Airlines Logo
4:03 pm - 2:57 pmONT-MKE
20h 54m1 stop
$324Alaska Airlines
Find Deal
Fri, Jan 9 - Thu, Jan 15
Delta Logo
11:03 am - 10:51 pmMKE-ONT
13h 48m2 stops
Delta Logo
1:10 pm - 9:15 pmONT-MKE
6h 05m1 stop
$331Delta
Find Deal
Wed, Feb 4 - Tue, Feb 10
Alaska Airlines Logo
3:47 pm - 11:32 pmMKE-ONT
9h 45m1 stop
Alaska Airlines Logo
6:14 am - 2:51 pmONT-MKE
30h 37m1 stop
$333Alaska Airlines
Find Deal
Thu, Mar 5 - Tue, Mar 10
Alaska Airlines Logo
3:47 pm - 10:44 pmMKE-ONT
8h 57m1 stop
Alaska Airlines Logo
6:14 am - 2:51 pmONT-MKE
30h 37m1 stop
$334Alaska Airlines
Find Deal
Wed, Mar 4 - Sun, Mar 8
Delta Logo
3:17 pm - 10:05 pmMKE-ONT
8h 48m1 stop
Delta Logo
7:30 am - 9:15 pmONT-MKE
11h 45m2 stops
$336Delta
Find Deal
Sat, Dec 13 - Sat, Jan 10
Delta Logo
7:20 am - 12:18 pmMKE-ONT
6h 58m1 stop
Delta Logo
1:29 pm - 9:46 pmONT-MKE
6h 17m1 stop
$352Delta
Find Deal
Thu, Nov 27 - Wed, Dec 3
Alaska Airlines Logo
3:51 pm - 11:29 pmMKE-ONT
9h 38m1 stop
Alaska Airlines Logo
12:13 pm - 2:55 pmONT-MKE
24h 42m1 stop
$363Alaska Airlines
Find Deal
Fri, Dec 5 - Mon, Dec 8

Delta flights from Milwaukee to Ontario

Our best Delta deals on Milwaukee to Ontario flight tickets
Delta
Dec 13
MKE6:00 amMilwaukee-Mitchell
13h 07m
2 stops
ONT5:07 pmOntario
Jan 10
ONT7:30 amOntario
11h 45m
2 stops
MKE9:15 pmMilwaukee-Mitchell
$296
Find similar
Delta
Dec 9
MKE5:11 pmMilwaukee-Mitchell
7h 53m
1 stop
ONT11:04 pmOntario
Dec 13
ONT12:40 pmOntario
19h 54m
2 stops
MKE10:34 amMilwaukee-Mitchell
$316
Find similar
Delta
Feb 4
MKE11:03 amMilwaukee-Mitchell
13h 48m
2 stops
ONT10:51 pmOntario
Feb 10
ONT1:10 pmOntario
6h 05m
1 stop
MKE9:15 pmMilwaukee-Mitchell
$331
Find similar

Alaska Airlines flights from Milwaukee to Ontario

Our best Alaska Airlines deals on Milwaukee to Ontario flight tickets
Alaska Airlines
Mar 4
MKE3:47 pmMilwaukee-Mitchell
8h 57m
1 stop
ONT10:44 pmOntario
Mar 10
ONT4:02 pmOntario
20h 49m
1 stop
MKE2:51 pmMilwaukee-Mitchell
$323
Find similar
Alaska Airlines
Jan 9
MKE3:53 pmMilwaukee-Mitchell
30h 43m
1 stop
ONT8:36 pmOntario
Jan 15
ONT4:03 pmOntario
20h 54m
1 stop
MKE2:57 pmMilwaukee-Mitchell
$324
Find similar
Alaska Airlines
Mar 5
MKE3:47 pmMilwaukee-Mitchell
9h 45m
1 stop
ONT11:32 pmOntario
Mar 10
ONT6:14 amOntario
30h 37m
1 stop
MKE2:51 pmMilwaukee-Mitchell
$333
Find similar

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 November 17, 2025.
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

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Sat 12/13

6:00 am-5:07 pm

2 stops13h 07m

Ontario

Sat 1/10

7:30 am-9:15 pm

2 stops11h 45m

$296

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Tue 12/9

5:11 pm-11:04 pm

1 stop7h 53m

Ontario

Sat 12/13

12:40 pm-10:34 am

2 stops19h 54m

$316

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 3/4

3:47 pm-10:44 pm

1 stop8h 57m

Ontario

Tue 3/10

4:02 pm-2:51 pm

1 stop20h 49m

$323

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Fri 1/9

3:53 pm-8:36 pm

1 stop30h 43m

Ontario

Thu 1/15

4:03 pm-2:57 pm

1 stop20h 54m

$324

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 2/4

11:03 am-10:51 pm

2 stops13h 48m

Ontario

Tue 2/10

1:10 pm-9:15 pm

1 stop6h 05m

$331

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 3/5

3:47 pm-11:32 pm

1 stop9h 45m

Ontario

Tue 3/10

6:14 am-2:51 pm

1 stop30h 37m

$333

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 3/4

3:47 pm-10:44 pm

1 stop8h 57m

Ontario

Sun 3/8

6:14 am-2:51 pm

1 stop30h 37m

$334

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Sat 12/13

3:17 pm-10:05 pm

1 stop8h 48m

Ontario

Sat 1/10

7:30 am-9:15 pm

2 stops11h 45m

$336

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 11/27

7:20 am-12:18 pm

1 stop6h 58m

Ontario

Wed 12/3

1:29 pm-9:46 pm

1 stop6h 17m

$352

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Fri 12/5

3:51 pm-11:29 pm

1 stop9h 38m

Ontario

Mon 12/8

12:13 pm-2:55 pm

1 stop24h 42m

$363

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 cheapest month to fly to Ontario?

In general, September 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 $364. If you aren’t able to travel during the month of September, then book flights to Ontario from Milwaukee during August instead. Flights to Ontario in August, while not as cheap as those in September, still average around $376.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Wednesday when prices can be found for as low as $366. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Milwaukee to Ontario for around $642.

What is the cheapest time of day to depart on your flight to Ontario?

In the evening is the cheapest time of day to fly from Milwaukee to Ontario when you can find flight prices for as low as $307. Flying to Ontario in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $434 on average. Flights to Ontario from Milwaukee at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How have Milwaukee to Ontario flight prices changed over time?

As of November 2025, prices for Milwaukee to Ontario flights are approximately 101% more expensive when compared to flights at the same time last year.

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

Direct flights

None
There are no direct flights from Milwaukee to Ontario. There are no popular flight routes from Milwaukee to Ontario.
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  • How far is Milwaukee-Mitchell to Ontario by plane?

    There are 1710.4 mi between Milwaukee-Mitchell and Ontario. 6h 43m 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
American AirlinesPriceFrom $278Free CancellationRating
7.2
11,048 reviews
Search American Airlines flights
DeltaPriceFrom $326Free CancellationRating
7.9
8,008 reviews
Search Delta flights
SouthwestPriceFrom $342Free CancellationRating
8.0
4,245 reviews
Search Southwest flights
United AirlinesPriceFrom $344Free CancellationRating
7.4
9,014 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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