Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Milwaukee to Los Angeles from $139

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 8/18. 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.
Delta Logo
7:15 am - 12:30 pm
MKE
-
ONT
7h 15m
1 stop
Delta Logo
12:00 pm - 9:09 pm
ONT
-
MKE
7h 09m
1 stop
$277Delta
Tue, Oct 13 - Wed, Oct 21
Southwest Logo
1:30 pm - 8:10 pm
MKE
-
ONT
8h 40m
1 stop
Southwest Logo
5:45 am - 1:25 pm
ONT
-
MKE
5h 40m
1 stop
$288Southwest
Sat, Aug 15 - Tue, Sep 15
Delta Logo
2:45 pm - 10:14 pm
MKE
-
ONT
9h 29m
1 stop
Delta Logo
12:00 pm - 11:49 pm
ONT
-
MKE
9h 49m
1 stop
$296Delta
Wed, Oct 14 - Sat, Oct 17
Delta Logo
4:15 pm - 10:14 pm
MKE
-
ONT
7h 59m
1 stop
Delta Logo
10:59 pm - 9:22 am
ONT
-
MKE
8h 23m
1 stop
$315Delta
Mon, Oct 19 - Mon, Nov 2
Delta Logo
4:15 pm - 10:14 pm
MKE
-
ONT
7h 59m
1 stop
Delta Logo
12:00 pm - 9:09 pm
ONT
-
MKE
7h 09m
1 stop
$323Delta
Wed, Oct 14 - Fri, Oct 16
Southwest Logo
7:05 pm - 11:05 pm
MKE
-
ONT
6h 00m
1 stop
Southwest Logo
6:50 am - 2:55 pm
ONT
-
MKE
6h 05m
1 stop
$328Southwest
Tue, Jul 28 - Tue, Aug 18
Southwest Logo
5:00 am - 11:30 am
MKE
-
ONT
8h 30m
2 stops
Southwest Logo
6:50 am - 2:55 pm
ONT
-
MKE
6h 05m
1 stop
$334Southwest
Tue, Jul 28 - Tue, Aug 18
Delta Logo
2:59 pm - 9:50 pm
MKE
-
ONT
8h 51m
1 stop
Delta Logo
12:00 pm - 11:53 pm
ONT
-
MKE
9h 53m
1 stop
$336Delta
Tue, Jul 28 - Tue, Aug 18
Southwest Logo
1:30 pm - 8:05 pm
MKE
-
ONT
8h 35m
2 stops
Southwest Logo
5:45 am - 1:25 pm
ONT
-
MKE
5h 40m
1 stop
$338Southwest
Sat, Aug 15 - Tue, Sep 15
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
$363Alaska Airlines
Tue, Aug 25 - Tue, Sep 1

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

American Airlines flights from Milwaukee to Ontario

Our best American Airlines deals on Milwaukee to Ontario flight tickets
American Airlines
Jul 11
MKE7:26 amMilwaukee-Mitchell
6h 36m
1 stop
ONT12:02 pmOntario
Jul 15
ONT12:35 pmOntario
8h 59m
1 stop
MKE11:34 pmMilwaukee-Mitchell
$403
American Airlines
Jul 28
MKE5:02 amMilwaukee-Mitchell
9h 00m
2 stops
ONT12:02 pmOntario
Aug 18
ONT6:15 amOntario
5h 39m
1 stop
MKE1:54 pmMilwaukee-Mitchell
$404
American Airlines
Jul 11
MKE7:21 amMilwaukee-Mitchell
6h 24m
1 stop
ONT11:45 amOntario
Jul 15
ONT1:11 pmOntario
8h 23m
2 stops
MKE11:34 pmMilwaukee-Mitchell
$408

Southwest flights from Milwaukee to Ontario

Our best Southwest deals on Milwaukee to Ontario flight tickets
Southwest
Aug 15
MKE1:30 pmMilwaukee-Mitchell
8h 40m
1 stop
ONT8:10 pmOntario
Sep 15
ONT5:45 amOntario
5h 40m
1 stop
MKE1:25 pmMilwaukee-Mitchell
$288
Southwest
Jul 28
MKE7:05 pmMilwaukee-Mitchell
6h 00m
1 stop
ONT11:05 pmOntario
Aug 18
ONT6:50 amOntario
6h 05m
1 stop
MKE2:55 pmMilwaukee-Mitchell
$328
Southwest
Jul 28
MKE5:00 amMilwaukee-Mitchell
8h 30m
2 stops
ONT11:30 amOntario
Aug 18
ONT6:50 amOntario
6h 05m
1 stop
MKE2:55 pmMilwaukee-Mitchell
$334

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 13, 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 10/13

7:15 am-12:30 pm

1 stop7h 15m

Ontario

Wed 10/21

12:00 pm-9:09 pm

1 stop7h 09m

$277

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Sat 8/15

1:30 pm-8:10 pm

1 stop8h 40m

Ontario

Tue 9/15

5:45 am-1:25 pm

1 stop5h 40m

$288

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 10/14

2:45 pm-10:14 pm

1 stop9h 29m

Ontario

Sat 10/17

12:00 pm-11:49 pm

1 stop9h 49m

$296

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Mon 10/19

4:15 pm-10:14 pm

1 stop7h 59m

Ontario

Mon 11/2

10:59 pm-9:22 am

1 stop8h 23m

$315

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 10/14

4:15 pm-10:14 pm

1 stop7h 59m

Ontario

Fri 10/16

12:00 pm-9:09 pm

1 stop7h 09m

$323
Quickest round-trip

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Tue 7/28

7:05 pm-11:05 pm

1 stop6h 00m

Ontario

Tue 8/18

6:50 am-2:55 pm

1 stop6h 05m

$328

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Tue 7/28

5:00 am-11:30 am

2 stops8h 30m

Ontario

Tue 8/18

6:50 am-2:55 pm

1 stop6h 05m

$334

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Tue 7/28

2:59 pm-9:50 pm

1 stop8h 51m

Ontario

Tue 8/18

12:00 pm-11:53 pm

1 stop9h 53m

$336

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Sat 8/15

1:30 pm-8:05 pm

2 stops8h 35m

Ontario

Tue 9/15

5:45 am-1:25 pm

1 stop5h 40m

$338

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Tue 8/25

7:02 am-2:09 pm

1 stop9h 07m

Ontario

Tue 9/1

12:00 pm-11:59 pm

1 stop9h 59m

$363

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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

7h 08m

Direct flights

None
The fastest flight from Milwaukee to Ontario takes 7h 08m
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. 7h 08m 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
9,815 reviews
Search United Airlines flights
SouthwestPriceFrom $316Free CancellationRating
7.9
4,235 reviews
Search Southwest flights
American AirlinesPriceFrom $341Free CancellationRating
7.1
11,648 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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 7/13
Mon 7/20
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States