ONT - MLU

$558 Find Cheap Flights from Ontario to Monroe - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$558
Typical prices: $487-$707
Delta
Sun 2/11Sun 2/18
ONT - MLU • 1 stop
When to travel
July
Cheapest • 36% price drop
April
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Atlanta Hartsfield-Jackson (ATL)
Cheapest • Avg $427 (round-trip)
Dallas/Fort Worth (DFW)
Shortest trip • 6h 41m (one-way)
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Insights
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Flight Deals

Cheap Flights from Ontario to Monroe (ONT-MLU)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Monroe

Thu, Feb 11 - Thu, Feb 18
Delta Logo
7:00 am - 4:37 pmONT  Ontario-MLU Monroe Huenefeld
7h 37m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:02 am - 11:27 amMLU  Monroe Huenefeld-ONT Ontario
7h 25m1 stop Atlanta Hartsfield-Jackson
$558Delta
Fri, Nov 13 - Tue, Nov 17
Delta Logo
12:18 pm - 10:58 pmONT  Ontario-MLU Monroe Huenefeld
8h 40m1 stop Atlanta Hartsfield-Jackson
Delta Logo
1:06 pm - 8:54 pmMLU  Monroe Huenefeld-ONT Ontario
9h 48m1 stop Atlanta Hartsfield-Jackson
$604Delta
Fri, Nov 13 - Tue, Nov 17
Delta Logo
12:18 pm - 10:58 pmONT  Ontario-MLU Monroe Huenefeld
8h 40m1 stop Atlanta Hartsfield-Jackson
Delta Logo
1:06 pm - 11:49 pmMLU  Monroe Huenefeld-ONT Ontario
12h 43m2 stops Atlanta Hartsfield-Jackson Salt Lake City
$610Delta
Fri, Nov 13 - Tue, Nov 17
American Airlines Logo
1:23 pm - 10:36 pmONT  Ontario-MLU Monroe Huenefeld
7h 13m2 stops Phoenix Sky Harbor Intl Dallas/Fort Worth
American Airlines Logo
10:08 am - 6:10 pmMLU  Monroe Huenefeld-ONT Ontario
10h 02m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl
$768American Airlines
Thu, Feb 11 - Thu, Feb 18
Delta Logo
7:00 am - 4:37 pmONT  Ontario-MLU Monroe Huenefeld
7h 37m1 stop Atlanta Hartsfield-Jackson
Delta Logo
12:40 pm - 11:48 pmMLU  Monroe Huenefeld-ONT Ontario
13h 08m2 stops Atlanta Hartsfield-Jackson Salt Lake City
$1,002Delta
Booking Insights

Price, demand and travel trends for Ontario to Monroe flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Ontario to Monroe?

Round-trip flights from Ontario to Monroe typically range from $487 to $707. The lowest price found in the past 5 days was $558, on Delta.

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Key details for Ontario to Monroe flights

Low season

January

Cheapest flight

$558
Beat the crowds with an average 82% drop in travelers.
The most popular month to fly with an average 62% increase in travelers.
Round-trip flight from Ontario to Monroe

When to book flights from Ontario to Monroe

Are your dates flexible? Find out the best times to travel from Ontario to Monroe based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Ontario to Monroe flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Ontario to Monroe?

    Only Economy Class is available on flights from Ontario to Monroe.

  • How long is a flight from Ontario to Monroe?

    There are currently no nonstop flights available from Ontario to Monroe. Flights with 1 layover take between 6h 41m and 7h 27m in total, depending on the connection.

  • Do I need a passport to fly from Ontario to Monroe?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • How much should I expect to pay for a Ontario to Monroe flight?

    Round-trip flights from Ontario to Monroe range from $487 to $707, with an average of $620 over the past 12 months. Anything below $487 counts as a good deal.

  • Have flight prices from Ontario to Monroe changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route varied from about $558 to $1,002. That means the highest observed fare was about 79% higher than the lowest one.

  • What car rental options are available at Monroe Huenefeld Airport (MLU)?

    Monroe Huenefeld Airport (MLU) hosts 5 major car rental companies, with daily rates averaging $108 for economy cars. Top options include:

    • Enterprise Rent-A-Car
    • National
    • Avis
    • Hertz
    • Budget

  • Which airports can I use when flying from Ontario to Monroe?

    Flights from Ontario to Monroe usually depart from Ontario (ONT) and arrive at Monroe Huenefeld (MLU).

  • Which airports do connecting flights from Ontario to Monroe pass through?

    Connecting flights from Ontario to Monroe most commonly pass through:

    • Dallas/Fort Worth (DFW) - 94% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 6% of one-stop connections

  • Can I save money by using flexible dates for flights from Ontario to Monroe?

    Yes. Flexible dates can save you up to 54% on flights from Ontario to Monroe. Tuesday is the cheapest departure day at $398 round-trip on average, while Wednesday is the most expensive at $865, a difference of $467.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from Ontario to Monroe?

    Flying via Dallas/Fort Worth (DFW) gives the shortest average 1-stop total travel time at 6h 41m, compared with 7h 27m via Atlanta Hartsfield-Jackson (ATL).

  • What is the time difference between Ontario and Monroe?

    Monroe is 2 hours ahead of Ontario (Central Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

Your guide to booking Ontario to Monroe flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Tuesday departure and avoid flying on Wednesday. On this route, Tuesday flights average $398, about $467 less than Wednesday fares (54% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Ontario to Monroe trip for July. Fares historically average $398 round-trip in that month - typically $467 less than the most expensive month, which is May (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Monroe Huenefeld Airport.

    • Hampton Inn and Suites Monroe
    • Courtyard by Marriott Monroe Airport
    • TownePlace Suites by Marriott Monroe

More options for your flight from Ontario to Monroe

Complete your trip to Monroe with a hotel stay or car rental

Car rentals in Monroe
Hotels in Monroe