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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 10/21. 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
7:00 am - 11:47 am
MKE
-
ONT
6h 47m
1 stop
American Airlines Logo
12:37 pm - 9:48 pm
ONT
-
MKE
7h 11m
1 stop
$322American Airlines
Wed, Sep 9 - Wed, Sep 16
American Airlines Logo
5:50 pm - 10:59 pm
MKE
-
ONT
7h 09m
1 stop
American Airlines Logo
12:33 pm - 10:57 pm
ONT
-
MKE
8h 24m
1 stop
$323American Airlines
Sat, Aug 22 - Sat, Sep 5
Southwest Logo
8:00 pm - 11:45 pm
MKE
-
ONT
5h 45m
1 stop
Southwest Logo
1:35 pm - 9:55 pm
ONT
-
MKE
6h 20m
1 stop
$323Southwest
Thu, Oct 15 - Tue, Oct 20
Southwest Logo
6:55 am - 12:55 pm
MKE
-
ONT
8h 00m
1 stop
Southwest Logo
10:55 am - 9:25 pm
ONT
-
MKE
8h 30m
1 stop
$323Southwest
Tue, Oct 13 - Tue, Oct 20
Delta Logo
7:15 am - 12:22 pm
MKE
-
ONT
7h 07m
1 stop
Delta Logo
1:17 pm - 9:46 pm
ONT
-
MKE
6h 29m
1 stop
$323Delta
Tue, Nov 3 - Wed, Nov 4
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
$323Delta
Thu, Aug 20 - Wed, Aug 26
American Airlines Logo
5:50 pm - 10:59 pm
MKE
-
ONT
7h 09m
1 stop
American Airlines Logo
6:00 am - 4:53 pm
ONT
-
MKE
8h 53m
1 stop
$323American Airlines
Sat, Sep 5 - Sat, Sep 12
Southwest Logo
2:05 pm - 7:00 pm
MKE
-
ONT
6h 55m
1 stop
Southwest Logo
12:50 pm - 9:05 pm
ONT
-
MKE
6h 15m
1 stop
$323Southwest
Wed, Sep 9 - Thu, Sep 10
United Airlines Logo
5:17 pm - 10:35 pm
MKE
-
ONT
7h 18m
1 stop
United Airlines Logo
8:00 am - 9:03 pm
ONT
-
MKE
11h 03m
2 stops
$328United Airlines
Sat, Sep 5 - Sat, Sep 12
United Airlines Logo
1:19 pm - 8:53 pm
MKE
-
ONT
9h 34m
2 stops
United Airlines Logo
5:00 am - 4:09 pm
ONT
-
MKE
9h 09m
2 stops
$333United Airlines
Sat, Sep 5 - Sat, Sep 12

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Southwest flights from Milwaukee to Ontario

Our best Southwest deals on Milwaukee to Ontario flight tickets
Southwest
Sep 9
MKE2:05 pmMilwaukee-Mitchell
6h 55m
1 stop
ONT7:00 pmOntario
Sep 10
ONT12:50 pmOntario
6h 15m
1 stop
MKE9:05 pmMilwaukee-Mitchell
$323
Southwest
Sep 9
MKE11:40 amMilwaukee-Mitchell
8h 10m
2 stops
ONT5:50 pmOntario
Sep 16
ONT1:10 pmOntario
6h 15m
1 stop
MKE9:25 pmMilwaukee-Mitchell
$328
Southwest
Nov 26
MKE5:00 amMilwaukee-Mitchell
8h 30m
2 stops
ONT11:30 amOntario
Dec 1
ONT1:25 pmOntario
7h 40m
2 stops
MKE11:05 pmMilwaukee-Mitchell
$338

Alaska Airlines flights from Milwaukee to Ontario

Our best Alaska Airlines deals on Milwaukee to Ontario flight tickets
Alaska Airlines
Oct 28
MKE5:17 pmMilwaukee-Mitchell
19h 00m
1 stop
ONT10:17 amOntario
Nov 1
ONT7:10 pmOntario
18h 38m
1 stop
MKE3:48 pmMilwaukee-Mitchell
$405
Alaska Airlines
Dec 5
MKE2:50 pmMilwaukee-Mitchell
9h 49m
1 stop
ONT10:39 pmOntario
Dec 6
ONT6:10 pmOntario
17h 42m
2 stops
MKE1:52 pmMilwaukee-Mitchell
$463
Alaska Airlines
Aug 24
MKE7:02 amMilwaukee-Mitchell
9h 07m
1 stop
ONT2:09 pmOntario
Aug 27
ONT12:00 pmOntario
9h 59m
1 stop
MKE11:59 pmMilwaukee-Mitchell
$479

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 28, 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

Wed 9/9

7:00 am-11:47 am

1 stop6h 47m

Ontario

Wed 9/16

12:37 pm-9:48 pm

1 stop7h 11m

$322

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Sat 8/22

5:50 pm-10:59 pm

1 stop7h 09m

Ontario

Sat 9/5

12:33 pm-10:57 pm

1 stop8h 24m

$323
Quickest round-trip

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 10/15

8:00 pm-11:45 pm

1 stop5h 45m

Ontario

Tue 10/20

1:35 pm-9:55 pm

1 stop6h 20m

$323

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Tue 10/13

6:55 am-12:55 pm

1 stop8h 00m

Ontario

Tue 10/20

10:55 am-9:25 pm

1 stop8h 30m

$323

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Tue 11/3

7:15 am-12:22 pm

1 stop7h 07m

Ontario

Wed 11/4

1:17 pm-9:46 pm

1 stop6h 29m

$323

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 8/20

10:22 am-6:30 pm

1 stop10h 08m

Ontario

Wed 8/26

1:06 pm-9:41 pm

1 stop6h 35m

$323

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Sat 9/5

5:50 pm-10:59 pm

1 stop7h 09m

Ontario

Sat 9/12

6:00 am-4:53 pm

1 stop8h 53m

$323

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 9/9

2:05 pm-7:00 pm

1 stop6h 55m

Ontario

Thu 9/10

12:50 pm-9:05 pm

1 stop6h 15m

$323

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Sat 9/5

5:17 pm-10:35 pm

1 stop7h 18m

Ontario

Sat 9/12

8:00 am-9:03 pm

2 stops11h 03m

$328

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Sat 9/5

1:19 pm-8:53 pm

2 stops9h 34m

Ontario

Sat 9/12

5:00 am-4:09 pm

2 stops9h 09m

$333

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?

Prices are currently low for flights on this route.

Typical prices usually range from $356 to $437.
The lowest price recently found on this route was $322.

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 $327. If you aren’t able to travel during the month of September, then book flights to Ontario from Milwaukee during April instead. Flights to Ontario in April, while not as cheap as those in September, still average around $371.

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
10,048 reviews
Search United Airlines flights
SouthwestPriceFrom $334Free CancellationRating
8.0
4,228 reviews
Search Southwest flights
American AirlinesPriceFrom $356Free CancellationRating
7.1
11,839 reviews
Search American Airlines 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. 4,228 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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