Cheap flights from Milwaukee to Ontario from $105
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 Ontario departing on 5/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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, May 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 $206. If you aren’t able to travel during the month of May, then book flights to Ontario from Milwaukee during July instead. Flights to Ontario in July, while not as cheap as those in May, still average around $331.
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 26 weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $414 when searching 26 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.
What is the cheapest airline that flies from Milwaukee-Mitchell to Ontario?
Frontier, Alaska Airlines, and Delta are the most popular carriers operating from Milwaukee-Mitchell to Ontario
What airlines fly to Ontario?
American Airlines, United Airlines and Spirit Airlines are the top three most popular airlines that fly to Ontario from Milwaukee according to our data. American Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 10 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.
When to book flights from Milwaukee to Ontario
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
How far is Milwaukee-Mitchell to Ontario by plane?
There are 1710.4 mi between Milwaukee-Mitchell and Ontario. 6h 02m 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?
As of April 2025, there are 5 operators available to choose from 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?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Milwaukee to Ontario is Southwest (34% of total bookings). The next most popular airlines are American Airlines (25%), Delta (18%), and United Airlines (13%).
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 | ||
|---|---|---|---|---|---|
| PriceFrom $138 | Free Cancellation | Rating 6.0 3,281 reviews | |||
| PriceFrom $276 | Free Cancellation | Rating 8.0 7,917 reviews | |||
| PriceFrom $291 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $326 | Free Cancellation | Rating 7.4 8,667 reviews | |||
| PriceFrom $330 | Free Cancellation | Rating 8.0 4,280 reviews |
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.