Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Milwaukee to Los Angeles from $75

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 11/17. 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
0 bags

Discover deals from 900+ travel sites with momondo.

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

Find the cheapest flights from Milwaukee to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
8:04 pm - 9:27 pmMKE-ONT
27h 23m1 stop
Frontier Logo
12:58 am - 7:09 pmONT-MKE
16h 11m1 stop
$256Frontier
Find Deal
Mon, Nov 17 - Mon, Nov 24
Frontier Logo
8:04 pm - 11:50 pmMKE-ONT
5h 46m1 stop
Frontier Logo
6:53 am - 7:19 pmONT-MKE
10h 26m1 stop
$272Frontier
Find Deal
Fri, Nov 14 - Mon, Nov 17
United Airlines Logo
1:25 pm - 10:57 pmMKE-ONT
11h 32m2 stops
United Airlines Logo
5:00 am - 2:56 pmONT-MKE
7h 56m1 stop
$357United Airlines
Find Deal
Thu, Feb 19 - Sat, Feb 28
Southwest Logo
5:15 am - 12:15 pmMKE-ONT
9h 00m2 stops
Southwest Logo
5:45 am - 3:35 pmONT-MKE
7h 50m2 stops
$362Southwest
Find Deal
Thu, Feb 19 - Sat, Feb 28
Delta Logo
1:35 pm - 9:07 pmMKE-ONT
9h 32m1 stop
Delta Logo
10:20 pm - 9:21 amONT-MKE
9h 01m1 stop
$363Delta
Find Deal
Tue, Feb 24 - Sat, Feb 28
Delta Logo
7:20 am - 12:34 pmMKE-ONT
7h 14m1 stop
Delta Logo
1:04 pm - 11:30 pmONT-MKE
8h 26m1 stop
$367Delta
Find Deal
Sat, Dec 13 - Sat, Jan 10
United Airlines Logo
8:00 am - 12:47 pmMKE-ONT
6h 47m1 stop
United Airlines Logo
6:00 am - 2:55 pmONT-MKE
6h 55m1 stop
$369United Airlines
Find Deal
Thu, Jan 15 - Tue, Jan 27
Southwest Logo
5:10 am - 12:15 pmMKE-ONT
9h 05m2 stops
Southwest Logo
5:45 am - 3:35 pmONT-MKE
7h 50m2 stops
$373Southwest
Find Deal
Tue, Feb 24 - Sat, Feb 28
American Airlines Logo
2:53 pm - 9:11 pmMKE-ONT
8h 18m1 stop
American Airlines Logo
7:30 pm - 4:16 amONT-MKE
6h 46m1 stop
$386American Airlines
Find Deal
Wed, Nov 26 - Sat, Nov 29
American Airlines Logo
7:32 am - 4:05 pmMKE-ONT
10h 33m2 stops
American Airlines Logo
9:59 am - 9:59 pmONT-MKE
10h 00m2 stops
$389American Airlines
Find Deal
Mon, Jan 19 - Thu, Jan 22

Frontier flights from Milwaukee to Ontario

Our best Frontier deals on Milwaukee to Ontario flight tickets
Frontier
Nov 17
MKE8:04 pmMilwaukee-Mitchell
27h 23m
1 stop
ONT9:27 pmOntario
Nov 24
ONT7:06 pmOntario
22h 03m
1 stop
MKE7:09 pmMilwaukee-Mitchell
$246
Find similar
Frontier
Nov 17
MKE8:04 pmMilwaukee-Mitchell
27h 23m
1 stop
ONT9:27 pmOntario
Nov 24
ONT12:58 amOntario
16h 11m
1 stop
MKE7:09 pmMilwaukee-Mitchell
$256
Find similar
Frontier
Nov 14
MKE8:04 pmMilwaukee-Mitchell
5h 46m
1 stop
ONT11:50 pmOntario
Nov 17
ONT6:53 amOntario
10h 26m
1 stop
MKE7:19 pmMilwaukee-Mitchell
$272
Find similar

Delta flights from Milwaukee to Ontario

Our best Delta deals on Milwaukee to Ontario flight tickets
Delta
Feb 24
MKE1:35 pmMilwaukee-Mitchell
9h 32m
1 stop
ONT9:07 pmOntario
Feb 28
ONT10:20 pmOntario
9h 01m
1 stop
MKE9:21 amMilwaukee-Mitchell
$363
Find similar
Delta
Dec 13
MKE7:20 amMilwaukee-Mitchell
7h 14m
1 stop
ONT12:34 pmOntario
Jan 10
ONT1:04 pmOntario
8h 26m
1 stop
MKE11:30 pmMilwaukee-Mitchell
$367
Find similar
Delta
Feb 24
MKE1:21 pmMilwaukee-Mitchell
11h 19m
2 stops
ONT10:40 pmOntario
Feb 28
ONT10:20 pmOntario
9h 01m
1 stop
MKE9:21 amMilwaukee-Mitchell
$368
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 3, 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

Mon 11/17

8:04 pm-9:27 pm

1 stop27h 23m

Ontario

Mon 11/24

12:58 am-7:09 pm

1 stop16h 11m

$256

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Fri 11/14

8:04 pm-11:50 pm

1 stop5h 46m

Ontario

Mon 11/17

6:53 am-7:19 pm

1 stop10h 26m

$272

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 2/19

1:25 pm-10:57 pm

2 stops11h 32m

Ontario

Sat 2/28

5:00 am-2:56 pm

1 stop7h 56m

$357

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 2/19

5:15 am-12:15 pm

2 stops9h 00m

Ontario

Sat 2/28

5:45 am-3:35 pm

2 stops7h 50m

$362

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Tue 2/24

1:35 pm-9:07 pm

1 stop9h 32m

Ontario

Sat 2/28

10:20 pm-9:21 am

1 stop9h 01m

$363

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Sat 12/13

7:20 am-12:34 pm

1 stop7h 14m

Ontario

Sat 1/10

1:04 pm-11:30 pm

1 stop8h 26m

$367

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 1/15

8:00 am-12:47 pm

1 stop6h 47m

Ontario

Tue 1/27

6:00 am-2:55 pm

1 stop6h 55m

$369

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Tue 2/24

5:10 am-12:15 pm

2 stops9h 05m

Ontario

Sat 2/28

5:45 am-3:35 pm

2 stops7h 50m

$373

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 11/26

2:53 pm-9:11 pm

1 stop8h 18m

Ontario

Sat 11/29

7:30 pm-4:16 am

1 stop6h 46m

$386

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Mon 1/19

7:32 am-4:05 pm

2 stops10h 33m

Ontario

Thu 1/22

9:59 am-9:59 pm

2 stops10h 00m

$389

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 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 105% 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.
Search flight deals

  • How far is Milwaukee-Mitchell to Ontario by plane?

    There are 1710.4 mi between Milwaukee-Mitchell and Ontario. 5h 46m 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
11,038 reviews
Search American Airlines flights
DeltaPriceFrom $326Free CancellationRating
7.9
8,002 reviews
Search Delta flights
SouthwestPriceFrom $342Free CancellationRating
8.0
4,238 reviews
Search Southwest flights
United AirlinesPriceFrom $344Free CancellationRating
7.4
8,997 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.

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
Wed 12/3
Wed 12/10
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States