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Cheap flights from Milwaukee to Los Angeles from $74

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 2/20. 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

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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.
Delta Logo
12:11 pm - 9:05 pm
MKE
-
ONT
10h 54m1 stop
Delta Logo
10:30 pm - 9:10 am
ONT
-
MKE
8h 40m1 stop
$334Delta
mar., ene. 13 - mar., ene. 20
Delta Logo
11:03 am - 10:51 pm
MKE
-
ONT
13h 48m2 stops
Delta Logo
10:30 pm - 9:10 am
ONT
-
MKE
8h 40m1 stop
$337Delta
mar., ene. 13 - mar., ene. 20
American Airlines Logo
9:30 am - 6:20 pm
MKE
-
ONT
10h 50m2 stops
American Airlines Logo
9:59 am - 11:23 pm
ONT
-
MKE
11h 24m2 stops
$344American Airlines
mar., ene. 13 - mar., ene. 20
Delta Logo
5:30 am - 11:31 am
MKE
-
ONT
8h 01m1 stop
Delta Logo
12:41 pm - 11:28 pm
ONT
-
MKE
8h 47m1 stop
$352Delta
jue., ene. 8 - mar., ene. 13
Delta Logo
5:30 am - 11:31 am
MKE
-
ONT
8h 01m1 stop
Delta Logo
10:30 pm - 9:15 am
ONT
-
MKE
8h 45m1 stop
$361Delta
jue., ene. 8 - lun., ene. 12
United Airlines Logo
11:30 am - 9:58 pm
MKE
-
ONT
12h 28m2 stops
United Airlines Logo
5:05 am - 2:22 pm
ONT
-
MKE
7h 17m1 stop
$381United Airlines
mié., ene. 14 - lun., ene. 19
Alaska Airlines Logo
3:47 pm - 11:32 pm
MKE
-
ONT
9h 45m1 stop
Alaska Airlines Logo
6:14 am - 2:51 pm
ONT
-
MKE
30h 37m1 stop
$382Alaska Airlines
jue., feb. 26 - mié., mar. 4
Alaska Airlines Logo
7:00 am - 3:42 pm
MKE
-
ONT
10h 42m1 stop
Alaska Airlines Logo
4:03 pm - 2:57 pm
ONT
-
MKE
20h 54m1 stop
$389Alaska Airlines
mar., ene. 6 - mié., ene. 7
Delta Logo
12:17 pm - 9:05 pm
MKE
-
ONT
10h 48m1 stop
Delta Logo
10:30 pm - 9:10 am
ONT
-
MKE
8h 40m1 stop
$393Delta
vie., feb. 6 - lun., feb. 9
United Airlines Logo
2:32 pm - 10:53 pm
MKE
-
ONT
10h 21m2 stops
United Airlines Logo
5:05 am - 2:22 pm
ONT
-
MKE
7h 17m1 stop
$398United Airlines
vie., feb. 6 - lun., feb. 9

Delta flights from Milwaukee to Ontario

Our best Delta deals on Milwaukee to Ontario flight tickets
Delta
Jan 17
MKE7:45 amMilwaukee-Mitchell
6h 31m
1 stop
ONT12:16 pmOntario
Jan 24
ONT7:30 amOntario
11h 45m
2 stops
MKE9:15 pmMilwaukee-Mitchell
$318
Find similar
Delta
Jan 13
MKE12:11 pmMilwaukee-Mitchell
10h 54m
1 stop
ONT9:05 pmOntario
Jan 20
ONT10:30 pmOntario
8h 40m
1 stop
MKE9:10 amMilwaukee-Mitchell
$334
Find similar
Delta
Jan 13
MKE11:03 amMilwaukee-Mitchell
13h 48m
2 stops
ONT10:51 pmOntario
Jan 20
ONT12:41 pmOntario
9h 05m
1 stop
MKE11:46 pmMilwaukee-Mitchell
$337
Find similar

United Airlines flights from Milwaukee to Ontario

Our best United Airlines deals on Milwaukee to Ontario flight tickets
United Airlines
Jan 10
MKE8:00 amMilwaukee-Mitchell
6h 47m
1 stop
ONT12:47 pmOntario
Jan 18
ONT5:05 amOntario
8h 38m
2 stops
MKE3:43 pmMilwaukee-Mitchell
$339
Find similar
United Airlines
Jan 14
MKE11:30 amMilwaukee-Mitchell
12h 28m
2 stops
ONT9:58 pmOntario
Jan 19
ONT5:05 amOntario
7h 17m
1 stop
MKE2:22 pmMilwaukee-Mitchell
$381
Find similar
United Airlines
Feb 6
MKE2:32 pmMilwaukee-Mitchell
10h 21m
2 stops
ONT10:53 pmOntario
Feb 9
ONT5:05 amOntario
7h 17m
1 stop
MKE2:22 pmMilwaukee-Mitchell
$398
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 diciembre 8, 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

mar. 1/13

12:11 pm-9:05 pm

1 stop10h 54m

Ontario

mar. 1/20

10:30 pm-9:10 am

1 stop8h 40m

$334

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

mar. 1/13

11:03 am-10:51 pm

2 stops13h 48m

Ontario

mar. 1/20

10:30 pm-9:10 am

1 stop8h 40m

$337

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

mar. 1/13

9:30 am-6:20 pm

2 stops10h 50m

Ontario

mar. 1/20

9:59 am-11:23 pm

2 stops11h 24m

$344

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

jue. 1/8

5:30 am-11:31 am

1 stop8h 01m

Ontario

mar. 1/13

12:41 pm-11:28 pm

1 stop8h 47m

$352

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

jue. 1/8

5:30 am-11:31 am

1 stop8h 01m

Ontario

lun. 1/12

10:30 pm-9:15 am

1 stop8h 45m

$361

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

mié. 1/14

11:30 am-9:58 pm

2 stops12h 28m

Ontario

lun. 1/19

5:05 am-2:22 pm

1 stop7h 17m

$381

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

jue. 2/26

3:47 pm-11:32 pm

1 stop9h 45m

Ontario

mié. 3/4

6:14 am-2:51 pm

1 stop30h 37m

$382

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

mar. 1/6

7:00 am-3:42 pm

1 stop10h 42m

Ontario

mié. 1/7

4:03 pm-2:57 pm

1 stop20h 54m

$389

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

vie. 2/6

12:17 pm-9:05 pm

1 stop10h 48m

Ontario

lun. 2/9

10:30 pm-9:10 am

1 stop8h 40m

$393

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

vie. 2/6

2:32 pm-10:53 pm

2 stops10h 21m

Ontario

lun. 2/9

5:05 am-2:22 pm

1 stop7h 17m

$398

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 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 December 2025, prices for Milwaukee to Ontario flights are approximately 61% 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

Fastest flight time

6h 31m

Direct flights

None
The fastest flight from Milwaukee to Ontario takes 6h 31m
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. 6h 30m 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
11,045 reviews
Search American Airlines flights
DeltaPriceFrom $326Free CancellationRating
7.9
8,011 reviews
Search Delta flights
SouthwestPriceFrom $342Free CancellationRating
8.0
4,254 reviews
Search Southwest flights
United AirlinesPriceFrom $344Free CancellationRating
7.4
9,089 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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