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Cheap flights from Milwaukee to Los Angeles from $162

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 8/11. 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.
Southwest Logo
6:10 am - 11:25 am
MKE
-
ONT
7h 15m
1 stop
Southwest Logo
12:35 pm - 9:25 pm
ONT
-
MKE
6h 50m
1 stop
$323Southwest
Thu, Aug 20 - Mon, Aug 24
Southwest Logo
4:20 pm - 10:05 pm
MKE
-
ONT
7h 45m
2 stops
Southwest Logo
5:15 am - 1:10 pm
ONT
-
MKE
5h 55m
1 stop
$328Southwest
Thu, Aug 20 - Mon, Aug 24
Delta Logo
2:55 pm - 8:05 pm
MKE
-
ONT
7h 10m
1 stop
Delta Logo
10:00 pm - 9:06 am
ONT
-
MKE
9h 06m
1 stop
$333Delta
Fri, Sep 11 - Mon, Sep 14
Southwest Logo
5:45 am - 1:25 pm
MKE
-
ONT
9h 40m
2 stops
Southwest Logo
5:15 am - 9:00 pm
ONT
-
MKE
13h 45m
2 stops
$339Southwest
Thu, Aug 20 - Mon, Aug 24
Southwest Logo
6:20 pm - 10:05 pm
MKE
-
ONT
5h 45m
1 stop
Southwest Logo
9:25 am - 6:45 pm
ONT
-
MKE
7h 20m
1 stop
$341Southwest
Mon, Aug 31 - Sat, Sep 5
Delta Logo
10:22 am - 6:30 pm
MKE
-
ONT
10h 08m
1 stop
Delta Logo
1:06 pm - 9:41 pm
ONT
-
MKE
6h 35m
1 stop
$342Delta
Thu, Aug 27 - Sat, Sep 5
Southwest Logo
5:45 am - 1:25 pm
MKE
-
ONT
9h 40m
2 stops
Southwest Logo
9:25 am - 6:45 pm
ONT
-
MKE
7h 20m
1 stop
$346Southwest
Mon, Aug 31 - Sat, Sep 5
Delta Logo
7:30 am - 12:16 pm
MKE
-
ONT
6h 46m
1 stop
Delta Logo
12:00 pm - 11:53 pm
ONT
-
MKE
9h 53m
1 stop
$351Delta
Sat, Aug 15 - Sat, Aug 22
Southwest Logo
6:25 pm - 10:10 pm
MKE
-
ONT
5h 45m
1 stop
Southwest Logo
5:15 am - 1:10 pm
ONT
-
MKE
5h 55m
1 stop
$359Southwest
Thu, Aug 13 - Mon, Aug 17
Southwest Logo
4:00 pm - 9:40 pm
MKE
-
ONT
7h 40m
2 stops
Southwest Logo
3:10 pm - 12:10 am
ONT
-
MKE
7h 00m
1 stop
$364Southwest
Wed, Oct 14 - Sat, Oct 17

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United Airlines flights from Milwaukee to Ontario

Our best United Airlines deals on Milwaukee to Ontario flight tickets
United Airlines
Aug 25
MKE2:35 pmMilwaukee-Mitchell
8h 18m
1 stop
ONT8:53 pmOntario
Aug 29
ONT5:00 amOntario
6h 29m
1 stop
MKE1:29 pmMilwaukee-Mitchell
$423
United Airlines
Aug 25
MKE3:15 pmMilwaukee-Mitchell
9h 20m
1 stop
ONT10:35 pmOntario
Aug 29
ONT5:00 amOntario
10h 25m
2 stops
MKE5:25 pmMilwaukee-Mitchell
$428
United Airlines
Aug 25
MKE10:35 amMilwaukee-Mitchell
9h 36m
2 stops
ONT6:11 pmOntario
Aug 29
ONT5:00 amOntario
10h 25m
2 stops
MKE5:25 pmMilwaukee-Mitchell
$433

Delta flights from Milwaukee to Ontario

Our best Delta deals on Milwaukee to Ontario flight tickets
Delta
Sep 11
MKE2:55 pmMilwaukee-Mitchell
7h 10m
1 stop
ONT8:05 pmOntario
Sep 14
ONT10:00 pmOntario
9h 06m
1 stop
MKE9:06 amMilwaukee-Mitchell
$333
Delta
Aug 27
MKE10:22 amMilwaukee-Mitchell
10h 08m
1 stop
ONT6:30 pmOntario
Sep 5
ONT1:06 pmOntario
6h 35m
1 stop
MKE9:41 pmMilwaukee-Mitchell
$342
Delta
Aug 15
MKE7:30 amMilwaukee-Mitchell
6h 46m
1 stop
ONT12:16 pmOntario
Aug 22
ONT12:00 pmOntario
9h 53m
1 stop
MKE11:53 pmMilwaukee-Mitchell
$351

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 21, 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

Thu 8/20

6:10 am-11:25 am

1 stop7h 15m

Ontario

Mon 8/24

12:35 pm-9:25 pm

1 stop6h 50m

$323

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 8/20

4:20 pm-10:05 pm

2 stops7h 45m

Ontario

Mon 8/24

5:15 am-1:10 pm

1 stop5h 55m

$328

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Fri 9/11

2:55 pm-8:05 pm

1 stop7h 10m

Ontario

Mon 9/14

10:00 pm-9:06 am

1 stop9h 06m

$333

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 8/20

5:45 am-1:25 pm

2 stops9h 40m

Ontario

Mon 8/24

5:15 am-9:00 pm

2 stops13h 45m

$339

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Mon 8/31

6:20 pm-10:05 pm

1 stop5h 45m

Ontario

Sat 9/5

9:25 am-6:45 pm

1 stop7h 20m

$341

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 8/27

10:22 am-6:30 pm

1 stop10h 08m

Ontario

Sat 9/5

1:06 pm-9:41 pm

1 stop6h 35m

$342

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Mon 8/31

5:45 am-1:25 pm

2 stops9h 40m

Ontario

Sat 9/5

9:25 am-6:45 pm

1 stop7h 20m

$346

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Sat 8/15

7:30 am-12:16 pm

1 stop6h 46m

Ontario

Sat 8/22

12:00 pm-11:53 pm

1 stop9h 53m

$351
Quickest round-trip

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 8/13

6:25 pm-10:10 pm

1 stop5h 45m

Ontario

Mon 8/17

5:15 am-1:10 pm

1 stop5h 55m

$359

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 10/14

4:00 pm-9:40 pm

2 stops7h 40m

Ontario

Sat 10/17

3:10 pm-12:10 am

1 stop7h 00m

$364

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

5h 45m

Direct flights

None
The fastest flight from Milwaukee to Ontario takes 5h 45m
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 45m 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
10,011 reviews
Search United Airlines flights
American AirlinesPriceFrom $327Free CancellationRating
7.1
11,836 reviews
Search American Airlines flights
SouthwestPriceFrom $334Free CancellationRating
8.0
4,239 reviews
Search Southwest flights

  • Southwest Flights From Milwaukee to Ontario

    Across 2 Southwest flights from Milwaukee to Ontario this week, the average price was $483, with the best Southwest deals starting from $334 round-trip. 4,238 users have rated Southwest on momondo, with an average score of 8.0/10.

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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