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$298+ 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 4/13. Fares are subject to change and may not be available on all flights or dates of travel.
MGM — ONT
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap 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 January 29, 2026.

This United Airlines deal was found by Cheapflights users on 1/28. 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 4/135:00 pm
MGM
-
ONT
1 stop6h 50m
United Airlines
Mon 4/206:05 am
ONT
-
MGM
1 stop8h 20m
United Airlines
Deal found 1/28$298
This Delta deal was found by Cheapflights users on 1/28. 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 3/182:59 pm
MGM
-
ONT
1 stop8h 01m
Delta
Wed 3/2510:25 pm
ONT
-
MGM
1 stop8h 30m
Delta
Deal found 1/28$377
This American Airlines deal was found by Cheapflights users on 1/28. 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 3/1812:38 pm
MGM
-
ONT
1 stop10h 46m
American Airlines
Wed 3/2511:58 pm
ONT
-
MGM
2 stops10h 15m
American Airlines
Deal found 1/28$423
This American Airlines deal was found by Cheapflights users on 1/28. 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 3/205:27 pm
MGM
-
ONT
1 stop8h 32m
American Airlines
Tue 3/243:19 pm
ONT
-
MGM
1 stop6h 04m
American Airlines
Deal found 1/28$525
This United Airlines deal was found by Cheapflights users on 1/28. 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.
Fri 5/14:55 pm
MGM
-
ONT
1 stop7h 03m
United Airlines
Sun 5/36:59 pm
ONT
-
MGM
2 stops15h 11m
United Airlines
Deal found 1/28$642

Find 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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$298
(United Airlines)

Popular in

November

Cheapest in

February

Average price

$653
Provider with most accurate pricing for Montgomery Dannelly Field-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Montgomery Dannelly Field-Ontario flights.
Search Deals
From Montgomery Dannelly Field to Ontario
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($23 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 29, 2026.
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

Mon 4/13

5:00 pm-9:50 pm

1 stop6h 50m

Ontario

Mon 4/20

6:05 am-4:25 pm

1 stop8h 20m

$298

MontgomeryOntario

MGM - ONT

MGMONT

Montgomery Dannelly Field

Wed 3/18

2:59 pm-9:00 pm

1 stop8h 01m

Ontario

Wed 3/25

10:25 pm-8:55 am

1 stop8h 30m

$377

MontgomeryOntario

MGM - ONT

MGMONT

Montgomery Dannelly Field

Wed 3/18

12:38 pm-9:24 pm

1 stop10h 46m

Ontario

Wed 3/25

11:58 pm-5:02 pm

1 stop15h 04m

$491

MontgomeryOntario

MGM - ONT

MGMONT

Montgomery Dannelly Field

Fri 3/20

5:27 pm-11:59 pm

1 stop8h 32m

Ontario

Tue 3/24

3:19 pm-11:23 pm

1 stop6h 04m

$525

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

  • Most accurate provider: When it comes to deals on Montgomery, Alabama-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Montgomery, Alabama-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Montgomery, Alabama-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Montgomery, Alabama-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 Montgomery, Alabama-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 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 $134). Flying from Montgomery, Alabama to Ontario in December is currently the most expensive (average of $345). 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.

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 January 29, 2026.
See what other customers who have flown with 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.
American Airlines
7.2
Good
11,205 reviews

Entertainment

6.9

Crew

8.0

Comfort

7.2

Overall

7.2

Boarding

7.5

Food

6.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2024

LHR - SAN

This was the best flight I have experienced in all the years I have been f doing this journey with BA. Flight, food and service A1. Well done BA.
American Airlines
7.2
Good
11,205 reviews
American Airlines
7.2
Good
11,205 reviews

Entertainment

6.9

Crew

8.0

Comfort

7.2

Overall

7.2

Boarding

7.5

Food

6.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2024

LHR - SAN

This was the best flight I have experienced in all the years I have been f doing this journey with BA. Flight, food and service A1. Well done BA.

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 United Airlines and Delta fly from Montgomery, Alabama to Ontario in about 6h 50m. The time it takes to get you to your destination can typically vary by up to 1h 11m. 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 is the cheapest airline to fly from Montgomery, Alabama to Ontario round-trip?

    Cheapflights users have booked flights from Montgomery, Alabama to Ontario round-trip from $320.

  • 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 $134). Flying from Montgomery, Alabama to Ontario in December is currently the most expensive (average of $345). 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.

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Top airline flying from Montgomery to Ontario

Discover the top airline 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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$320Average$629FlexibilityNo cancel feeOn-time71%

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