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Cheap flights from Milwaukee to Los Angeles from $80

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
1 adult, Economy, 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.
Frontier Logo
6:29 pm - 11:55 pm
MKE
-
ONT
7h 26m
1 stop
Frontier Logo
5:33 pm - 5:34 pm
ONT
-
MKE
22h 01m
1 stop
$180Frontier
Fri, Apr 17 - Thu, Apr 23
Frontier Logo
6:29 pm - 11:55 pm
MKE
-
ONT
7h 26m
1 stop
Frontier Logo
12:59 am - 4:10 pm
ONT
-
MKE
13h 11m
1 stop
$196Frontier
Fri, Apr 24 - Sun, Apr 26
Frontier Logo
6:29 pm - 11:55 pm
MKE
-
ONT
7h 26m
1 stop
Frontier Logo
12:59 am - 4:10 pm
ONT
-
MKE
13h 11m
1 stop
$216Frontier
Fri, Apr 24 - Sun, Apr 26
Frontier Logo
6:29 pm - 11:55 pm
MKE
-
ONT
7h 26m
1 stop
Frontier Logo
12:59 am - 4:10 pm
ONT
-
MKE
13h 11m
1 stop
$221Frontier
Fri, Apr 24 - Sun, Apr 26
Frontier Logo
6:29 pm - 11:55 pm
MKE
-
ONT
7h 26m
1 stop
Frontier Logo
12:59 am - 4:10 pm
ONT
-
MKE
13h 11m
1 stop
$237Frontier
Fri, Apr 17 - Sun, Apr 19
Frontier Logo
6:29 pm - 11:55 pm
MKE
-
ONT
7h 26m
1 stop
Frontier Logo
5:12 pm - 4:10 pm
ONT
-
MKE
20h 58m
1 stop
$261Frontier
Fri, Apr 24 - Sun, Apr 26
Frontier Logo
6:29 pm - 11:55 pm
MKE
-
ONT
7h 26m
1 stop
Frontier Logo
12:59 am - 4:10 pm
ONT
-
MKE
13h 11m
1 stop
$263Frontier
Fri, Apr 17 - Sun, Apr 19
Frontier Logo
5:05 pm - 11:55 pm
MKE
-
ONT
8h 50m
1 stop
Frontier Logo
5:12 pm - 4:10 pm
ONT
-
MKE
20h 58m
1 stop
$282Frontier
Mon, Apr 20 - Sun, Apr 26
Frontier Logo
6:29 pm - 11:55 pm
MKE
-
ONT
7h 26m
1 stop
Frontier Logo
5:12 pm - 4:10 pm
ONT
-
MKE
20h 58m
1 stop
$351Frontier
Fri, Apr 17 - Sun, Apr 19
Delta Logo
2:55 pm - 9:48 pm
MKE
-
ONT
8h 53m
1 stop
Delta Logo
1:29 pm - 9:33 pm
ONT
-
MKE
6h 04m
1 stop
$357Delta
Wed, May 13 - Wed, May 20

Frontier flights from Milwaukee to Ontario

Our best Frontier deals on Milwaukee to Ontario flight tickets
Frontier
Apr 17
MKE6:29 pmMilwaukee-Mitchell
7h 26m
1 stop
ONT11:55 pmOntario
Apr 23
ONT5:33 pmOntario
22h 01m
1 stop
MKE5:34 pmMilwaukee-Mitchell
$180
Frontier
Apr 24
MKE6:29 pmMilwaukee-Mitchell
7h 26m
1 stop
ONT11:55 pmOntario
Apr 26
ONT12:59 amOntario
13h 11m
1 stop
MKE4:10 pmMilwaukee-Mitchell
$196
Frontier
Apr 24
MKE6:29 pmMilwaukee-Mitchell
7h 26m
1 stop
ONT11:55 pmOntario
Apr 26
ONT12:59 amOntario
13h 11m
1 stop
MKE4:10 pmMilwaukee-Mitchell
$216

American Airlines flights from Milwaukee to Ontario

Our best American Airlines deals on Milwaukee to Ontario flight tickets
American Airlines
May 7
MKE5:46 pmMilwaukee-Mitchell
6h 13m
1 stop
ONT9:59 pmOntario
May 13
ONT6:15 amOntario
6h 00m
1 stop
MKE2:15 pmMilwaukee-Mitchell
$367
American Airlines
May 7
MKE5:46 pmMilwaukee-Mitchell
6h 13m
1 stop
ONT9:59 pmOntario
May 13
ONT9:24 amOntario
11h 03m
2 stops
MKE10:27 pmMilwaukee-Mitchell
$372
American Airlines
May 13
MKE7:08 amMilwaukee-Mitchell
11h 14m
2 stops
ONT4:22 pmOntario
May 20
ONT12:19 pmOntario
9h 21m
2 stops
MKE11:40 pmMilwaukee-Mitchell
$375

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 4, 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

Fri 4/17

6:29 pm-11:55 pm

1 stop7h 26m

Ontario

Thu 4/23

5:33 pm-5:34 pm

1 stop22h 01m

$180

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Fri 4/24

6:29 pm-11:55 pm

1 stop7h 26m

Ontario

Sun 4/26

12:59 am-4:10 pm

1 stop13h 11m

$196

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Fri 4/24

6:29 pm-11:55 pm

1 stop7h 26m

Ontario

Sun 4/26

12:59 am-4:10 pm

1 stop13h 11m

$216

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Fri 4/24

6:29 pm-11:55 pm

1 stop7h 26m

Ontario

Sun 4/26

12:59 am-4:10 pm

1 stop13h 11m

$221

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Fri 4/17

6:29 pm-11:55 pm

1 stop7h 26m

Ontario

Sun 4/19

12:59 am-4:10 pm

1 stop13h 11m

$237

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Fri 4/24

6:29 pm-11:55 pm

1 stop7h 26m

Ontario

Sun 4/26

5:12 pm-4:10 pm

1 stop20h 58m

$261

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Fri 4/17

6:29 pm-11:55 pm

1 stop7h 26m

Ontario

Sun 4/19

12:59 am-4:10 pm

1 stop13h 11m

$263

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Mon 4/20

5:05 pm-11:55 pm

1 stop8h 50m

Ontario

Sun 4/26

5:12 pm-4:10 pm

1 stop20h 58m

$282

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Fri 4/17

6:29 pm-11:55 pm

1 stop7h 26m

Ontario

Sun 4/19

5:12 pm-4:10 pm

1 stop20h 58m

$351
Quickest round-trip

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 5/13

2:55 pm-9:48 pm

1 stop8h 53m

Ontario

Wed 5/20

1:29 pm-9:33 pm

1 stop6h 04m

$357

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
DeltaPriceFrom $300Free CancellationRating
7.9
8,383 reviews
Search Delta flights
SouthwestPriceFrom $316Free CancellationRating
8.0
4,343 reviews
Search Southwest flights
American AirlinesPriceFrom $324Free CancellationRating
7.1
11,555 reviews
Search American Airlines flights
United AirlinesPriceFrom $344Free CancellationRating
7.4
9,541 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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