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Monroe

$458+ Cheap flights from Ontario to Monroe (ONT - MLU)

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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MLU
Aug 5 — Aug 121
Wed 8/5
Wed 8/12
1 adult, Economy
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Cheap flight deals from Ontario to Monroe

Cheapest flights from Ontario to Monroe
Explore the most affordable flight options available from Ontario to Monroe. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 6, 2026.

This American Airlines deal was found by Cheapflights users on 7/5. 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 10/22:22 pm
ONT
-
MLU
1 stop6h 15m
American Airlines
Tue 10/66:00 am
MLU
-
ONT
1 stop5h 35m
American Airlines
Deal found 7/5$458
This Delta deal was found by Cheapflights users on 7/5. 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 10/27:05 am
ONT
-
MLU
1 stop7h 57m
Delta
Tue 10/612:55 pm
MLU
-
ONT
2 stops12h 51m
Delta
Deal found 7/5$542
This American Airlines deal was found by Cheapflights users on 7/1. 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 7/175:34 am
ONT
-
MLU
1 stop5h 39m
American Airlines
Mon 7/206:44 pm
MLU
-
ONT
1 stop5h 48m
American Airlines
Deal found 7/1$640

Find flight deals from Ontario to Monroe

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Monroe (MLU). 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 July 6, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$458
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$590
Provider with most accurate pricing for Ontario-Monroe Huenefeld flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Monroe Huenefeld flights.
Search Deals
From Ontario to Monroe Huenefeld
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($128 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Monroe 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 July 6, 2026.
Use the filters below to find and compare flights from Ontario to Monroe that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioMonroe

ONT - MLU

ONTMLU

Ontario

Fri 10/2

2:22 pm-10:37 pm

1 stop6h 15m

Monroe Huenefeld

Tue 10/6

6:00 am-9:35 am

1 stop5h 35m

$458

OntarioMonroe

ONT - MLU

ONTMLU

Ontario

Fri 10/2

7:05 am-5:02 pm

1 stop7h 57m

Monroe Huenefeld

Tue 10/6

12:55 pm-11:46 pm

2 stops12h 51m

$542
Quickest round-trip

OntarioMonroe

ONT - MLU

ONTMLU

Ontario

Fri 7/17

5:34 am-1:13 pm

1 stop5h 39m

Monroe Huenefeld

Mon 7/20

6:44 pm-10:32 pm

1 stop5h 48m

$640

OntarioMonroe

ONT - MLU

ONTMLU

Ontario

Fri 7/24

1:11 pm-11:57 pm

2 stops8h 46m

Monroe Huenefeld

Mon 7/27

6:44 pm-10:32 pm

1 stop5h 48m

$767

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/5

Sorted by cheapest first

Compare providers for flights from Ontario to Monroe

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 Ontario to Monroe in July.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Monroe flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Monroe flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Monroe flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Monroe 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 Ontario-Monroe 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 Ontario to Monroe

Have a flexible travel schedule? Discover the best time to fly to Monroe from Ontario with our price prediction graph.
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.

Reviews of airlines servicing Monroe

Get insights into the airlines that provide service to Monroe. 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 Monroe. Reviews last updated July 6, 2026.
Get a feel of what it's like to fly with American Airlines from Ontario to Monroe by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.1
Good
11,782 reviews

Overall

7.1

Boarding

7.5

Comfort

7.2

Crew

7.9

Food

6.4

Entertainment

6.8

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
American Airlines
7.1
Good
11,782 reviews
American Airlines
7.1
Good
11,782 reviews

Overall

7.1

Boarding

7.5

Comfort

7.2

Crew

7.9

Food

6.4

Entertainment

6.8

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac

Related info for your journey

Find useful and relevant information for your journey from Ontario to Monroe. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Ontario to Monroe?

    For as low as $458, American Airlines can have you in Monroe from Ontario in 6h 15m. Airlines will cover a distance of 1475 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Ontario to Monroe round-trip?

    According to our current data, American Airlines ($378), offers the cheapest pricing from Ontario to Monroe.

  • Can I find deals for flights from Ontario to Monroe that include hotel bookings?

    Yes. In addition to deals on Ontario to Monroe flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Monroe?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Monroe.

  • Can I find deals for business class flights from Ontario to Monroe?

    Yes. Cheapflights offers flight deals from Ontario to Monroe by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Monroe?

Book flights to Monroe if you plan to visit one of these locations
Ruston
West Monroe

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Top airline flying from Ontario to Monroe

Discover the top airline that operate flights from Ontario to Monroe. 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 July 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$378Average$448FlexibilityNo cancel feeOn-time71%

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