$140+ Cheap flights from Milwaukee to Ontario (MKE - ONT)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — ONT
Nov 25 — Dec 21
Round-trip
1 adult, Economy
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Find cheap flights from Milwaukee to Ontario with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Milwaukee to Ontario
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Cheapest flights from Milwaukee to OntarioExplore the most affordable flight options available from Milwaukee to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 26, 2026.
Explore the most affordable flight options available from Milwaukee to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 26, 2026.
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/153:12 pm -
1 stop7h 46m
Tue 1/51:00 pm -
1 stop6h 25m
Deal found 10/23![Delta logo]()
$279
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/109:33 am -
2 stops10h 28m
Thu 11/125:00 am -
1 stop6h 34m
Deal found 10/21![United Airlines logo]()
$284
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2510:48 am -
2 stops11h 02m
Tue 12/15:00 am -
1 stop6h 24m
Deal found 10/22![United Airlines logo]()
$300
This Southwest deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/45:55 pm -
1 stop5h 50m
Tue 12/83:50 pm -
1 stop5h 25m
Deal found 10/23![Southwest logo]()
$308
This Delta deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/157:30 am -
1 stop6h 47m
Wed 11/181:15 pm -
1 stop6h 40m
Deal found 10/22![Delta logo]()
$336
This American Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/256:46 am -
1 stop8h 45m
Thu 12/319:35 am -
2 stops10h 01m
Deal found 10/21![American Airlines logo]()
$341
This Priceline deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/34:25 pm -
1 stop8h 34m
Mon 12/76:00 am -
1 stop7h 27m
Deal found 10/22![Alaska Airlines logo]()
$355
This Southwest deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/258:00 pm -
1 stop5h 55m
Tue 12/13:20 pm -
1 stop5h 25m
Deal found 10/22![Southwest logo]()
$356
Best flights from Milwaukee to OntarioDiscover carefully curated flight deals from Milwaukee to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 26, 2026.
Discover carefully curated flight deals from Milwaukee to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 26, 2026.
This Southwest deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/45:55 pm -
1 stop5h 50m
Tue 12/83:50 pm -
1 stop5h 25m
Deal found 10/23![Southwest logo]()
$308
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/102:35 pm -
1 stop8h 16m
Wed 11/115:00 am -
1 stop6h 34m
Deal found 10/23![United Airlines logo]()
$399
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/95:20 am -
1 stop7h 43m
Mon 11/1611:10 pm -
1 stop8h 05m
Deal found 10/21![Delta logo]()
$464
This Southwest deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/315:45 am -
1 stop6h 25m
Mon 1/45:20 pm -
1 stop5h 25m
Deal found 10/23![Southwest logo]()
$393
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/1310:45 am -
2 stops11h 47m
Sat 3/205:00 am -
1 stop6h 23m
Deal found 10/25![United Airlines logo]()
$438
This Southwest deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/176:25 pm -
2 stops16h 25m
Sun 12/205:10 am -
2 stops7h 15m
Deal found 10/25![Southwest logo]()
$409
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/228:40 am -
2 stops13h 45m
Mon 1/251:42 pm -
1 stop5h 31m
Deal found 10/21![United Airlines logo]()
$442
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/103:59 pm -
1 stop7h 12m
Sun 12/137:00 am -
1 stop6h 03m
Deal found 10/22![United Airlines logo]()
$456
This Southwest deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/85:50 am -
2 stops9h 10m
Thu 11/125:20 pm -
1 stop5h 25m
Deal found 10/23![Southwest logo]()
$468
Last-minute flights from Milwaukee to OntarioDiscover last-minute flight deals from Milwaukee to Ontario. Data last updated October 26, 2026 and is based on user searches.
Discover last-minute flight deals from Milwaukee to Ontario. Data last updated October 26, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/105:15 am -
1 stop8h 55m
Thu 11/122:45 pm -
1 stop5h 25m
Deal found 10/21![Southwest logo]()
$279
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/109:33 am -
2 stops10h 28m
Thu 11/125:00 am -
1 stop6h 34m
Deal found 10/21![United Airlines logo]()
$284
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/102:35 pm -
1 stop8h 16m
Wed 11/115:00 am -
1 stop6h 34m
Deal found 10/21![United Airlines logo]()
$399
This Delta deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/157:30 am -
1 stop6h 47m
Wed 11/181:15 pm -
1 stop6h 40m
Deal found 10/22![Delta logo]()
$336
This American Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:05 am -
1 stop6h 47m
Sat 11/216:30 am -
1 stop5h 29m
Deal found 10/25![American Airlines logo]()
$393
This Delta deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/235:20 am -
1 stop7h 43m
Tue 12/112:20 pm -
1 stop9h 39m
Deal found 10/22![Delta logo]()
$430
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2510:48 am -
2 stops11h 02m
Tue 12/15:00 am -
1 stop6h 24m
Deal found 10/22![United Airlines logo]()
$300
This Southwest deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/258:00 pm -
1 stop5h 55m
Tue 12/13:20 pm -
1 stop5h 25m
Deal found 10/22![Southwest logo]()
$356
One-way flights from Milwaukee to OntarioSearch for one-way flight options from Milwaukee to Ontario. Find affordable one-way fares based on user searches. Data last updated October 26, 2026.
Search for one-way flight options from Milwaukee to Ontario. Find affordable one-way fares based on user searches. Data last updated October 26, 2026.
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:30 am -
1 stop6h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Delta logo]()
$140
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1112:03 pm -
2 stops10h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![United Airlines logo]()
$145
This Southwest deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/175:20 am -
1 stop7h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Southwest logo]()
$163
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1112:42 pm -
1 stop10h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Delta logo]()
$170
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/135:20 am -
1 stop7h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Delta logo]()
$178
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2212:42 pm -
1 stop10h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Delta logo]()
$197
This Mytrip deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:37 pm -
2 stops26h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Multiple Airlines logo]()
$200
This American Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/17:00 am -
2 stops10h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![American Airlines logo]()
$202
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/146:00 am -
2 stops11h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![United Airlines logo]()
$205
This Alaska Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/256:00 am -
1 stop11h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Alaska Airlines logo]()
$208
This Mytrip deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/236:11 pm -
2 stops19h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Frontier logo]()
$214
Find flight deals from Milwaukee to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from Milwaukee (MKE) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $279 (Delta) |
One-way from | $140 (Delta) |
Popular in | February |
Cheapest in | April |
Average price | $436 |
Cheapflights 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, Cheapflights users made 7,457,451 searches. Data last updated October 26, 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
Cheapest round-trip
MilwaukeeOntario
MKE Milwaukee-Mitchell - ONT Ontario
MKEONT
Milwaukee-Mitchell
Wed 11/11
12:03 pm-8:15 pm
2 stops10h 12m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$145
MilwaukeeOntario
MKE Milwaukee-Mitchell - ONT Ontario
MKEONT
Milwaukee-Mitchell
Thu 12/17
6:25 pm-8:50 am
2 stops16h 25m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$174
MilwaukeeOntario
MKE Milwaukee-Mitchell - ONT Ontario
MKEONT
Milwaukee-Mitchell
Sat 11/21
4:33 pm-11:31 pm
1 stop8h 58m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$178
Quickest round-trip
MilwaukeeOntario
MKE Milwaukee-Mitchell - ONT Ontario
MKEONT
Milwaukee-Mitchell
Tue 12/1
6:50 am-11:55 am
1 stop7h 05m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$197
MilwaukeeOntario
MKE Milwaukee-Mitchell - ONT Ontario
MKEONT
Milwaukee-Mitchell
Mon 12/14
6:00 am-3:35 pm
2 stops11h 35m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$205
MilwaukeeOntario
MKE Milwaukee-Mitchell - ONT Ontario
MKEONT
Milwaukee-Mitchell
Fri 12/25
6:00 am-3:03 pm
1 stop11h 03m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$208
MilwaukeeOntario
MKE Milwaukee-Mitchell - ONT Ontario
MKEONT
Milwaukee-Mitchell
Mon 1/4
6:00 am-3:03 pm
1 stop11h 03m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$215
MilwaukeeOntario
MKE Milwaukee-Mitchell - ONT Ontario
MKEONT
Milwaukee-Mitchell
Tue 1/5
5:30 am-11:55 am
1 stop8h 25m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$227
MilwaukeeOntario
MKE Milwaukee-Mitchell - ONT Ontario
MKEONT
Milwaukee-Mitchell
Sat 11/14
5:04 am-6:17 pm
2 stops15h 13m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$233
MilwaukeeOntario
MKE Milwaukee-Mitchell - ONT Ontario
MKEONT
Milwaukee-Mitchell
Fri 11/13
5:04 am-6:17 pm
2 stops15h 13m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$233
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Milwaukee to Ontario
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Milwaukee to Ontario in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Milwaukee-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Milwaukee-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Milwaukee-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Milwaukee-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Milwaukee-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Milwaukee to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Milwaukee with our price prediction graph.
MKE-ONT
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Milwaukee to Ontario
What is the cheapest month to book a flight from Milwaukee to Ontario?
Currently, April is the cheapest month in which you can book a flight from Milwaukee to Ontario (average of $371). Flying from Milwaukee to Ontario in February is currently the most expensive (average of $625). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Milwaukee to Ontario?
Airfare is below average for this route at the moment.
Milwaukee to Ontario flights typically cost between $410 and $496 in January.The cheapest round-trip price found within the last 5 days was $279 on Delta (Jan 6-Jan 13).
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated October 26, 2026.
Read through reviews of airlines operating flights from Milwaukee to Ontario, such as Southwest,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.4
Food
7.0
Overall
7.9
Comfort
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Entertainment
7.4
Food
7.0
Overall
7.9
Comfort
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Entertainment
7.4
Food
7.0
Overall
7.9
Comfort
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Entertainment
7.4
Food
7.0
Overall
7.9
Comfort
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Related info for your journey
Find useful and relevant information for your journey from Milwaukee to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for Milwaukee to Ontario
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Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Milwaukee to Ontario by cabin class
Find flights from Milwaukee to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 26, 2026.
Milwaukee and Ontario flights
Browse other Milwaukee and Ontario flight options. Last updated on October 26, 2026.
Other flights from Milwaukee
Browse through other flights departing from Milwaukee. Flights are based on user searches made on Cheapflights and were last updated on October 26, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Milwaukee to Ontario
Discover the top 3 airlines that operate flights from Milwaukee to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$306 | Average$436 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$340 | Average$467 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$368 | Average$489 | FlexibilityNo cancel fee | On-time71% |