Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Milwaukee to Los Angeles from $118

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 8/25. 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.

Find the cheapest flights from Milwaukee to Los Angeles

Cheap round-trip flights

Frontier Logo
7:58 pm - 9:09 amMKE-ONT
15h 11m1 stop
Frontier Logo
12:59 am - 7:12 pmONT-MKE
16h 13m1 stop
$237Frontier
Find Deal
Fri, Aug 15 - Sun, Aug 24
Frontier Logo
7:58 pm - 9:09 amMKE-ONT
15h 11m1 stop
Frontier Logo
12:59 am - 7:13 pmONT-MKE
16h 14m1 stop
$252Frontier
Find Deal
Fri, Aug 8 - Sun, Aug 10
Frontier Logo
7:58 pm - 9:09 amMKE-ONT
15h 11m1 stop
Frontier Logo
5:21 pm - 7:13 pmONT-MKE
23h 52m1 stop
$314Frontier
Find Deal
Fri, Aug 1 - Sun, Aug 3
American Airlines Logo
5:28 pm - 12:08 amMKE-ONT
8h 40m1 stop
American Airlines Logo
4:54 pm - 2:02 pmONT-MKE
19h 08m1 stop
$325American Airlines
Find Deal
Thu, Aug 28 - Tue, Sep 2
American Airlines Logo
2:36 pm - 9:39 pmMKE-ONT
9h 03m2 stops
American Airlines Logo
4:54 pm - 2:02 pmONT-MKE
19h 08m1 stop
$338American Airlines
Find Deal
Thu, Aug 28 - Tue, Sep 2
Southwest Logo
6:25 pm - 11:00 pmMKE-ONT
6h 35m1 stop
Southwest Logo
5:40 am - 3:10 pmONT-MKE
7h 30m1 stop
$343Southwest
Find Deal
Mon, Oct 20 - Wed, Oct 29
Delta Logo
4:57 pm - 10:20 pmMKE-ONT
7h 23m1 stop
Delta Logo
11:45 am - 11:36 pmONT-MKE
9h 51m1 stop
$344Delta
Find Deal
Thu, Aug 21 - Thu, Aug 28
Southwest Logo
7:15 pm - 11:05 pmMKE-ONT
5h 50m1 stop
Southwest Logo
5:40 am - 3:30 pmONT-MKE
7h 50m2 stops
$348Southwest
Find Deal
Mon, Oct 20 - Wed, Oct 29
United Airlines Logo
2:47 pm - 8:54 pmMKE-ONT
8h 07m1 stop
United Airlines Logo
7:00 am - 5:00 pmONT-MKE
8h 00m1 stop
$435United Airlines
Find Deal
Tue, Aug 5 - Sat, Aug 9
United Airlines Logo
2:47 pm - 10:52 pmMKE-ONT
10h 05m2 stops
United Airlines Logo
7:00 am - 3:10 pmONT-MKE
6h 10m1 stop
$440United Airlines
Find Deal
Tue, Aug 5 - Sat, Aug 9

Frontier flights from Milwaukee to Ontario

Our best Frontier deals on Milwaukee to Ontario flight tickets
Frontier
Aug 15
MKE7:58 pmMilwaukee-Mitchell
15h 11m
1 stop
ONT9:09 amOntario
Aug 24
ONT12:59 amOntario
16h 13m
1 stop
MKE7:12 pmMilwaukee-Mitchell
Frontier
Aug 8
MKE7:58 pmMilwaukee-Mitchell
15h 11m
1 stop
ONT9:09 amOntario
Aug 10
ONT12:59 amOntario
16h 14m
1 stop
MKE7:13 pmMilwaukee-Mitchell
Frontier
Aug 1
MKE7:58 pmMilwaukee-Mitchell
15h 11m
1 stop
ONT9:09 amOntario
Aug 3
ONT5:21 pmOntario
23h 52m
1 stop
MKE7:13 pmMilwaukee-Mitchell

American Airlines flights from Milwaukee to Ontario

Our best American Airlines deals on Milwaukee to Ontario flight tickets
American Airlines
Aug 28
MKE5:28 pmMilwaukee-Mitchell
8h 40m
1 stop
ONT12:08 amOntario
Sep 2
ONT4:54 pmOntario
19h 08m
1 stop
MKE2:02 pmMilwaukee-Mitchell
American Airlines
Aug 28
MKE2:36 pmMilwaukee-Mitchell
9h 03m
2 stops
ONT9:39 pmOntario
Sep 2
ONT4:54 pmOntario
19h 08m
1 stop
MKE2:02 pmMilwaukee-Mitchell
American Airlines
Aug 14
MKE2:31 pmMilwaukee-Mitchell
9h 08m
1 stop
ONT9:39 pmOntario
Aug 16
ONT12:22 pmOntario
9h 49m
2 stops
MKE12:11 amMilwaukee-Mitchell

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, December 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 $381. If you aren’t able to travel during the month of December, then book flights to Ontario from Milwaukee during November instead. Flights to Ontario in November, while not as cheap as those in December, still average around $386.

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 far in advance should I book a flight to Ontario?

You are more likely to see cheaper flights to Ontario from Milwaukee when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $440 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Milwaukee for as low as $276 on momondo.

How have Milwaukee to Ontario flight prices changed over time?

As of June 2025, prices for Milwaukee to Ontario flights are approximately 48% cheaper 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

Best Price Found

$118

Fastest flight time

5h 48m

Direct flights

None

Airports in Ontario

1 airport
The best one-way flight to Ontario from Milwaukee in the past 72 hours is $118. The best round-trip flight deal from Milwaukee to Ontario found on momondo in the last 72 hours is $237.
The fastest flight from Milwaukee to Ontario takes 5h 48m
There are no direct flights from Milwaukee to Ontario. Popular non-direct route for this connection is Milwaukee-Mitchell Airport - Ontario Airport.
There is 1 airport near Ontario: Ontario (ONT)

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

    There are 1710.4 mi between Milwaukee-Mitchell and Ontario. 5h 50m 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 $306Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $308Free CancellationRating
8.0
7,973 reviews
Search Delta flights
United AirlinesPriceFrom $332Free CancellationRating
7.4
8,852 reviews
Search United Airlines flights
SouthwestPriceFrom $336Free CancellationRating
8.0
4,278 reviews
Search Southwest 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 7/5
Sat 7/12

Find better results for your trip to the United States