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$432+ Cheap flights from Montgomery, AL to Ontario (MGM - 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 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
MGM — ONT
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Montgomery to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Montgomery (MGM) 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 September 15, 2025.

Round-trip from

$432
(Delta)

Popular in

June

Cheapest in

January

Average price

$438
From Montgomery Dannelly Field to Ontario
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($34 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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Find flight deals from Montgomery to Ontario

Cheapest flights from Montgomery to Ontario
Explore the most affordable flight options available from Montgomery to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Delta deal was found by Cheapflights users on 9/14. 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 10/86:05 amMGM - ONT
1 stop6h 21mDelta
Wed 10/1510:00 pmONT - MGM
1 stop8h 49mDelta
Deal found 9/14$432
This American Airlines deal was found by Cheapflights users on 9/14. 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.
Wed 10/86:19 amMGM - ONT
2 stops12h 09mAmerican Airlines
Wed 10/1512:47 pmONT - MGM
1 stop8h 22mAmerican Airlines
Deal found 9/14$464
This Delta deal was found by Cheapflights users on 9/14. 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 11/176:23 pmMGM - ONT
1 stop6h 41mDelta
Fri 11/2110:25 pmONT - MGM
1 stop8h 02mDelta
Deal found 9/14$586
This American Airlines deal was found by Cheapflights users on 9/14. 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.
Mon 11/171:05 pmMGM - ONT
2 stops10h 54mAmerican Airlines
Fri 11/2112:49 pmONT - MGM
1 stop8h 14mAmerican Airlines
Deal found 9/14$592

Cheapflights Fare Finder

 
Customize your flight search to find flights from Montgomery 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 September 15, 2025.
Use the filters below to find and compare flights from Montgomery to Ontario that are best for you.

Fly from

Montgomery

Fly to

Ontario

Route

Depart

Return

Price

MontgomeryOntario

MGM - ONT

MGMONT

Montgomery Dannelly Field

Wed 10/8

6:05 am-10:26 am

1 stop6h 21m

Ontario

Wed 10/15

10:00 pm-8:49 am

1 stop8h 49m

$432

MontgomeryOntario

MGM - ONT

MGMONT

Montgomery Dannelly Field

Wed 10/8

6:19 am-4:28 pm

2 stops12h 09m

Ontario

Wed 10/15

12:47 pm-11:09 pm

1 stop8h 22m

$464

MontgomeryOntario

MGM - ONT

MGMONT

Montgomery Dannelly Field

Mon 11/17

6:23 pm-11:04 pm

1 stop6h 41m

Ontario

Fri 11/21

10:25 pm-8:27 am

1 stop8h 02m

$586

MontgomeryOntario

MGM - ONT

MGMONT

Montgomery Dannelly Field

Mon 11/17

1:05 pm-9:59 pm

2 stops10h 54m

Ontario

Fri 11/21

12:49 pm-11:03 pm

1 stop8h 14m

$592

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Best time to book a flight from Montgomery to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Montgomery 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.

Cheapflights Insights

Everything you need to know about your flight from Montgomery to Ontario

What is the cheapest month to book a flight from Montgomery, Alabama to Ontario?

Currently, August is the cheapest month in which you can book a flight from Montgomery, Alabama to Ontario (average of $246). Flying from Montgomery, Alabama to Ontario in March is currently the most expensive (average of $328). 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.

What is the cheapest time of day to fly from MGM to ONT?

Find hourly flight availability from Montgomery to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

When flying from Montgomery, Alabama to Ontario, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 18% versus a flight in the morning.

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 September 15, 2025.
See what other customers who have flown with Delta and American Airlines from Montgomery to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,954 reviews

Overall

8.0

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,954 reviews
Delta
8.0
Very good
7,954 reviews

Overall

8.0

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,954 reviews

Overall

8.0

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Montgomery to Ontario. 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 Montgomery, Alabama to Ontario?

    Airlines like Delta and American Airlines fly from Montgomery, Alabama to Ontario in about 6h 21m. The time it takes to get you to your destination can typically vary by up to 5h 48m. Montgomery, Alabama and Ontario are separated by a distance of 1800 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Montgomery, Alabama to Ontario round-trip?

    Cheapflights users have booked flights from Montgomery, Alabama to Ontario round-trip from $323. Another airline that can offer you cheap pricing is American Airlines.

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

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

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

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

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

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

  • What is the cheapest month to book a flight from Montgomery, Alabama to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Montgomery, Alabama to Ontario (average of $246). Flying from Montgomery, Alabama to Ontario in March is currently the most expensive (average of $328). 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.

See more FAQs

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Top 2 airlines flying from Montgomery to Ontario

Discover the top 2 airlines that operate flights from Montgomery 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$323Average$536FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$358Average$529FlexibilityNo cancel feeOn-time71%

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