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Cheap flights from Ontario to Monroe from $458

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Monroe departing on 9/15. 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
1 adult, Economy, 0 bags

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Find the cheapest flights from Ontario to Monroe

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
10:25 am - 6:14 pm
ONT
-
MLU
5h 49m
1 stop
American Airlines Logo
1:44 pm - 6:53 pm
MLU
-
ONT
7h 09m
1 stop
$458American Airlines
Tue, Sep 15 - Sun, Sep 27
American Airlines Logo
6:15 am - 6:14 pm
ONT
-
MLU
9h 59m
2 stops
American Airlines Logo
6:00 am - 9:29 am
MLU
-
ONT
5h 29m
1 stop
$571American Airlines
Tue, Sep 15 - Sun, Sep 27
American Airlines Logo
5:34 am - 1:13 pm
ONT
-
MLU
5h 39m
1 stop
American Airlines Logo
6:44 pm - 10:32 pm
MLU
-
ONT
5h 48m
1 stop
$640American Airlines
Fri, Jul 17 - Mon, Jul 20
American Airlines Logo
6:15 am - 6:14 pm
ONT
-
MLU
9h 59m
2 stops
American Airlines Logo
1:44 pm - 10:43 pm
MLU
-
ONT
10h 59m
2 stops
$743American Airlines
Tue, Sep 15 - Sun, Sep 27
American Airlines Logo
7:15 pm - 9:49 am
ONT
-
MLU
12h 34m
2 stops
American Airlines Logo
6:44 pm - 10:32 pm
MLU
-
ONT
5h 48m
1 stop
$767American Airlines
Fri, Jul 17 - Mon, Jul 20
American Airlines Logo
1:11 pm - 11:57 pm
ONT
-
MLU
8h 46m
2 stops
American Airlines Logo
10:19 am - 6:18 pm
MLU
-
ONT
9h 59m
2 stops
$803American Airlines
Fri, Jul 17 - Mon, Jul 20

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American Airlines flights from Ontario to Monroe

Our best American Airlines deals on Ontario to Monroe flight tickets
American Airlines
Sep 15
ONT10:25 amOntario
5h 49m
1 stop
MLU6:14 pmMonroe Huenefeld
Sep 27
MLU1:44 pmMonroe Huenefeld
7h 09m
1 stop
ONT6:53 pmOntario
$458
American Airlines
Sep 15
ONT6:15 amOntario
9h 59m
2 stops
MLU6:14 pmMonroe Huenefeld
Sep 27
MLU6:00 amMonroe Huenefeld
5h 29m
1 stop
ONT9:29 amOntario
$571
American Airlines
Jul 9
ONT11:59 pmOntario
7h 50m
1 stop
MLU9:49 amMonroe Huenefeld
Jul 13
MLU6:44 pmMonroe Huenefeld
5h 48m
1 stop
ONT10:32 pmOntario
$640

momondo 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, momondo users made 832,500 searches. Data last updated July 3, 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

Tue 9/15

10:25 am-6:14 pm

1 stop5h 49m

Monroe Huenefeld

Sun 9/27

1:44 pm-6:53 pm

1 stop7h 09m

$458

OntarioMonroe

ONT - MLU

ONTMLU

Ontario

Tue 9/15

6:15 am-6:14 pm

2 stops9h 59m

Monroe Huenefeld

Sun 9/27

6:00 am-9:29 am

1 stop5h 29m

$571
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

Tue 9/15

6:15 am-6:14 pm

2 stops9h 59m

Monroe Huenefeld

Sun 9/27

1:44 pm-10:43 pm

2 stops10h 59m

$743

OntarioMonroe

ONT - MLU

ONTMLU

Ontario

Fri 7/17

7:15 pm-9:49 am

2 stops12h 34m

Monroe Huenefeld

Mon 7/20

6:44 pm-10:32 pm

1 stop5h 48m

$767

OntarioMonroe

ONT - MLU

ONTMLU

Ontario

Fri 7/17

1:11 pm-11:57 pm

2 stops8h 46m

Monroe Huenefeld

Mon 7/20

10:19 am-6:18 pm

2 stops9h 59m

$803

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Monroe from

How to get the cheapest flight ticket from Ontario to Monroe

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 airlines fly to Monroe?

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Monroe from Ontario according to our data. American Airlines is the first choice among our users, with 74% of people opting to fly with this airline when traveling to Monroe. Keep in mind that there are 3 different airlines that fly to Monroe on a routine basis, so you have a few additional options to choose from.

When to book flights from Ontario to Monroe

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Monroe according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Monroe (ONT to MLU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Monroe

Fastest flight time

5h 39m

Direct flights

None
The fastest flight from Ontario to Monroe takes 5h 39m
There are no direct flights from Ontario to Monroe. There are no popular flight routes from Ontario to Monroe.
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Frequently asked questions about flying from Ontario to Monroe

  • How far is Ontario to Monroe Huenefeld by plane?

    Ontario and Monroe Huenefeld are 1473.7 mi apart from one another. Flights usually cover this in 5h 39m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Ontario Airport to Monroe Huenefeld Airport?

    Prices for flights from Ontario Airport to Monroe Huenefeld Airport are updated daily.

  • How many operators does momondo search for flights from Ontario Airport to Monroe Huenefeld Airport?

  • How old do you have to be to fly from Ontario Airport to Monroe Huenefeld Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Monroe Huenefeld Airport.

  • What documentation or ID do you need to fly to Monroe Huenefeld Airport?

    The travel and health documents required for your trip to Monroe Huenefeld 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 Monroe Huenefeld 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 Ontario to Monroe?

Best airlines flying from Ontario to Monroe

Compare and see reviews for airlines that fly from Ontario to Monroe with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $378Free CancellationRating
7.1
11,766 reviews
Search American Airlines flights

Traveling to a place near Monroe?

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

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Monroe?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Monroe. momondo saves you time and could save you money on your trip.

Can I find flights from Ontario to Monroe with flexible booking policies on momondo?

momondo does allow users to show only those flights to Monroe from Ontario which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Ontario to Monroe?

Once you have performed a search for Ontario to Monroe flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Ontario to Monroe right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Monroe, momondo offers a useful price alert feature which will track prices for flights to Monroe from Ontario and alert you when they change.

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