$139+ Cheap flights from Milwaukee to Ontario (MKE - ONT)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — ONT
Sep 11 — Sep 181
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 August 12, 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 August 12, 2026.
This Southwest deal was found by Cheapflights users on 8/11. 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 9/295:00 pm -
1 stop6h 00m
Wed 9/301:50 pm -
1 stop5h 35m
Deal found 8/11![Southwest logo]()
$268
This Delta deal was found by Cheapflights users on 8/12. 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.
Sat 12/55:30 am -
1 stop7h 40m
Wed 12/161:25 pm -
1 stop6h 30m
Deal found 8/12![Delta logo]()
$277
This Delta deal was found by Cheapflights users on 8/12. 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.
Thu 12/37:25 am -
1 stop6h 45m
Wed 12/161:25 pm -
1 stop6h 30m
Deal found 8/12![Delta logo]()
$294
This Southwest deal was found by Cheapflights users on 8/11. 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 11/265:00 am -
1 stop8h 10m
Tue 12/13:20 pm -
1 stop5h 20m
Deal found 8/11![Southwest logo]()
$295
This Delta deal was found by Cheapflights users on 8/12. 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 10/215:30 am -
1 stop7h 36m
Fri 10/3012:18 pm -
1 stop9h 35m
Deal found 8/12![Delta logo]()
$300
This Delta deal was found by Cheapflights users on 8/12. 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.
Thu 12/37:25 am -
1 stop6h 45m
Mon 12/1411:10 pm -
1 stop8h 01m
Deal found 8/12![Delta logo]()
$311
This Delta deal was found by Cheapflights users on 8/12. 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 12/25:30 am -
1 stop7h 40m
Wed 12/161:25 pm -
1 stop6h 30m
Deal found 8/12![Delta logo]()
$312
This American Airlines deal was found by Cheapflights users on 8/10. 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 9/2912:22 pm -
1 stop8h 31m
Mon 10/57:34 pm -
2 stops10h 33m
Deal found 8/10![American Airlines logo]()
$316
This United Airlines deal was found by Cheapflights users on 8/11. 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 9/242:39 pm -
1 stop8h 19m
Tue 9/296:00 am -
1 stop9h 19m
Deal found 8/11![United Airlines logo]()
$319
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 August 12, 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 August 12, 2026.
This Delta deal was found by Cheapflights users on 8/12. 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 12/25:30 am -
1 stop7h 40m
Wed 12/161:25 pm -
1 stop6h 30m
Deal found 8/12![Delta logo]()
$312
This United Airlines deal was found by Cheapflights users on 8/11. 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 10/152:39 pm -
1 stop8h 19m
Tue 10/2011:10 am -
2 stops9h 49m
Deal found 8/11![United Airlines logo]()
$352
This Alaska Airlines deal was found by Cheapflights users on 8/11. 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.
Thu 10/295:17 pm -
1 stop8h 25m
Sun 11/16:00 am -
1 stop7h 33m
Deal found 8/11![Alaska Airlines logo]()
$399
This Southwest deal was found by Cheapflights users on 8/10. 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 9/16:50 am -
1 stop7h 50m
Mon 9/712:25 pm -
1 stop7h 00m
Deal found 8/10![Southwest logo]()
$448
This Delta deal was found by Cheapflights users on 8/12. 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 9/254:49 pm -
1 stop7h 35m
Mon 9/281:04 pm -
1 stop6h 07m
Deal found 8/12![Delta logo]()
$362
This United Airlines deal was found by Cheapflights users on 8/10. 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 11/172:35 pm -
1 stop8h 16m
Wed 11/185:00 am -
1 stop6h 34m
Deal found 8/10![United Airlines logo]()
$377
This United Airlines deal was found by Cheapflights users on 8/12. 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 10/205:00 am -
2 stops12h 22m
Tue 10/276:00 am -
2 stops12h 50m
Deal found 8/12![United Airlines logo]()
$387
This Southwest deal was found by Cheapflights users on 8/8. 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 10/225:20 am -
1 stop5h 45m
Sun 10/255:10 pm -
1 stop5h 10m
Deal found 8/8![Southwest logo]()
$482
This Delta deal was found by Cheapflights users on 8/8. 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.
Thu 9/105:30 am -
1 stop7h 35m
Wed 9/1612:17 pm -
1 stop7h 13m
Deal found 8/8![Delta logo]()
$451
This United Airlines deal was found by Cheapflights users on 8/8. 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.
Sun 8/238:15 am -
1 stop6h 35m
Wed 8/261:18 pm -
1 stop8h 41m
Deal found 8/8![United Airlines logo]()
$433
Last-minute flights from Milwaukee to OntarioDiscover last-minute flight deals from Milwaukee to Ontario. Data last updated August 12, 2026 and is based on user searches.
Discover last-minute flight deals from Milwaukee to Ontario. Data last updated August 12, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 8/12. 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.
Sat 8/297:00 am -
1 stop8h 53m
Wed 9/26:15 am -
1 stop5h 39m
Deal found 8/12![American Airlines logo]()
$323
This Delta deal was found by Cheapflights users on 8/10. 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 8/3112:51 pm -
1 stop9h 02m
Sat 9/512:00 pm -
1 stop9h 53m
Deal found 8/10![Delta logo]()
$335
This United Airlines deal was found by Cheapflights users on 8/10. 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 8/3110:35 am -
2 stops11h 26m
Sat 9/51:18 pm -
1 stop5h 45m
Deal found 8/10![United Airlines logo]()
$340
This United Airlines deal was found by Cheapflights users on 8/11. 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 9/242:39 pm -
1 stop8h 19m
Tue 9/296:00 am -
1 stop9h 19m
Deal found 8/11![United Airlines logo]()
$319
This Southwest deal was found by Cheapflights users on 8/11. 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 9/295:00 pm -
1 stop6h 00m
Wed 9/301:50 pm -
1 stop5h 35m
Deal found 8/11![Southwest logo]()
$268
This Delta deal was found by Cheapflights users on 8/10. 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 9/295:30 am -
1 stop7h 35m
Mon 10/51:04 pm -
1 stop6h 07m
Deal found 8/10![Delta logo]()
$294
This American Airlines deal was found by Cheapflights users on 8/10. 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 9/2912:22 pm -
1 stop8h 31m
Mon 10/57:34 pm -
2 stops10h 33m
Deal found 8/10![American Airlines logo]()
$316
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 August 12, 2026.
Search for one-way flight options from Milwaukee to Ontario. Find affordable one-way fares based on user searches. Data last updated August 12, 2026.
This Delta deal was found by Cheapflights users on 8/10. 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 9/95:30 am -
1 stop7h 35m
Deal found 8/10![Delta logo]()
$139
This Southwest deal was found by Cheapflights users on 8/11. 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.
Sat 9/55:30 am -
1 stop11h 45m
Deal found 8/11![Southwest logo]()
$140
This Southwest deal was found by Cheapflights users on 8/11. 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 9/66:30 am -
1 stop5h 35m
Deal found 8/11![Southwest logo]()
$162
This American Airlines deal was found by Cheapflights users on 8/11. 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.
Sat 9/55:00 am -
2 stops9h 03m
Deal found 8/11![American Airlines logo]()
$167
This United Airlines deal was found by Cheapflights users on 8/11. 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 9/172:40 pm -
1 stop8h 13m
Deal found 8/11![United Airlines logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 8/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1710:10 am -
2 stops33h 38m
Deal found 8/11![Frontier logo]()
$184
This Priceline deal was found by Cheapflights users on 8/11. 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 10/153:53 pm -
1 stop9h 49m
Deal found 8/11![Alaska Airlines logo]()
$189
This Delta deal was found by Cheapflights users on 8/10. 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 8/2512:51 pm -
1 stop9h 02m
Deal found 8/10![Delta logo]()
$190
This United Airlines deal was found by Cheapflights users on 8/10. 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 9/95:00 am -
2 stops9h 50m
Deal found 8/10![United Airlines logo]()
$194
This Delta deal was found by Cheapflights users on 8/8. 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 9/225:30 am -
1 stop7h 35m
Deal found 8/8![Delta logo]()
$207
This Delta deal was found by Cheapflights users on 8/11. 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.
Sat 8/297:30 am -
1 stop6h 46m
Deal found 8/11![Delta logo]()
$220
This United Airlines deal was found by Cheapflights users on 8/12. 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 9/35:17 pm -
1 stop7h 18m
Deal found 8/12![United Airlines logo]()
$224
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 August 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $268 (Southwest) |
One-way from | $139 (Delta) |
Popular in | February |
Cheapest in | September |
Average price | $437 |
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 2,558,603 searches. Data last updated August 12, 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 12/2
5:30 am-11:10 am
1 stop7h 40m
Ontario
Wed 12/16
1:25 pm-9:55 pm
1 stop6h 30m
$312
MilwaukeeOntario
MKE Milwaukee-Mitchell - ONT Ontario
MKEONT
Milwaukee-Mitchell
Thu 10/15
2:39 pm-8:58 pm
1 stop8h 19m
Ontario
Tue 10/20
11:10 am-10:59 pm
2 stops9h 49m
$352
MilwaukeeOntario
MKE Milwaukee-Mitchell - ONT Ontario
MKEONT
Milwaukee-Mitchell
Fri 9/25
4:49 pm-10:24 pm
1 stop7h 35m
Ontario
Mon 9/28
1:04 pm-9:11 pm
1 stop6h 07m
$362
MilwaukeeOntario
MKE Milwaukee-Mitchell - ONT Ontario
MKEONT
Milwaukee-Mitchell
Tue 11/17
2:35 pm-8:51 pm
1 stop8h 16m
Ontario
Wed 11/18
5:00 am-1:34 pm
1 stop6h 34m
$377
MilwaukeeOntario
MKE Milwaukee-Mitchell - ONT Ontario
MKEONT
Milwaukee-Mitchell
Tue 10/20
5:00 am-3:22 pm
2 stops12h 22m
Ontario
Tue 10/27
6:00 am-8:50 pm
2 stops12h 50m
$387
MilwaukeeOntario
MKE Milwaukee-Mitchell - ONT Ontario
MKEONT
Milwaukee-Mitchell
Thu 10/29
5:17 pm-11:42 pm
1 stop8h 25m
Ontario
Sun 11/1
6:00 am-3:33 pm
1 stop7h 33m
$399
MilwaukeeOntario
MKE Milwaukee-Mitchell - ONT Ontario
MKEONT
Milwaukee-Mitchell
Sun 8/23
8:15 am-12:50 pm
1 stop6h 35m
Ontario
Wed 8/26
1:18 pm-11:59 pm
1 stop8h 41m
$433
MilwaukeeOntario
MKE Milwaukee-Mitchell - ONT Ontario
MKEONT
Milwaukee-Mitchell
Tue 9/1
6:50 am-12:40 pm
1 stop7h 50m
Ontario
Mon 9/7
12:25 pm-9:25 pm
1 stop7h 00m
$448
MilwaukeeOntario
MKE Milwaukee-Mitchell - ONT Ontario
MKEONT
Milwaukee-Mitchell
Thu 9/10
5:30 am-11:05 am
1 stop7h 35m
Ontario
Wed 9/16
12:17 pm-9:30 pm
1 stop7h 13m
$451
Quickest round-trip
MilwaukeeOntario
MKE Milwaukee-Mitchell - ONT Ontario
MKEONT
Milwaukee-Mitchell
Thu 10/22
5:20 am-9:05 am
1 stop5h 45m
Ontario
Sun 10/25
5:10 pm-12:20 am
1 stop5h 10m
$482
Showing 1-10 of 22 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 August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 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, September is the cheapest month in which you can book a flight from Milwaukee to Ontario (average of $327). 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 $356 and $437 in September.The cheapest round-trip price found within the last 5 days was $268 on Southwest (Sep 29-Sep 30).
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 August 12, 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.
Boarding
8.1
Entertainment
7.5
Overall
8.0
Crew
8.6
Food
7.0
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Entertainment
7.5
Overall
8.0
Crew
8.6
Food
7.0
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Entertainment
7.5
Overall
8.0
Crew
8.6
Food
7.0
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Entertainment
7.5
Overall
8.0
Crew
8.6
Food
7.0
Comfort
8.0
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 August 12, 2026.
Milwaukee and Ontario flights
Browse other Milwaukee and Ontario flight options. Last updated on August 12, 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 August 12, 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 2,558,603 searches. Data last updated August 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$306 | Average$432 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$327 | Average$483 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$356 | Average$401 | FlexibilityNo cancel fee | On-time71% |