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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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
MGM — ONT
Mar 22 — Mar 291
Sun 3/22
Sun 3/29
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 February 20, 2026.

This United Airlines deal was found by Cheapflights users on 2/20. 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.
Tue 7/144:51 pm
MGM
-
ONT
1 stop7h 04m
United Airlines
Wed 7/225:45 am
ONT
-
MGM
1 stop8h 31m
United Airlines
Deal found 2/20$298
This Delta deal was found by Cheapflights users on 2/18. 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.
Thu 3/52:47 pm
MGM
-
ONT
1 stop8h 18m
Delta
Mon 3/910:25 pm
ONT
-
MGM
1 stop8h 30m
Delta
Deal found 2/18$328
This United Airlines deal was found by Cheapflights users on 2/18. 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 5/44:55 pm
MGM
-
ONT
1 stop7h 03m
United Airlines
Sat 5/96:00 am
ONT
-
MGM
1 stop8h 20m
United Airlines
Deal found 2/18$388
This United Airlines deal was found by Cheapflights users on 2/20. 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.
Sat 9/124:55 pm
MGM
-
ONT
1 stop6h 26m
United Airlines
Sat 9/196:02 am
ONT
-
MGM
1 stop8h 20m
United Airlines
Deal found 2/20$403
This American Airlines deal was found by Cheapflights users on 2/18. 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 3/185:27 pm
MGM
-
ONT
1 stop8h 32m
American Airlines
Wed 3/2511:58 pm
ONT
-
MGM
2 stops10h 15m
American Airlines
Deal found 2/18$438
This United Airlines deal was found by Cheapflights users on 2/17. 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.
Thu 5/214:51 pm
MGM
-
ONT
1 stop7h 04m
United Airlines
Thu 5/285:45 am
ONT
-
MGM
1 stop8h 31m
United Airlines
Deal found 2/17$448
This American Airlines deal was found by Cheapflights users on 2/20. 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.
Tue 7/147:14 pm
MGM
-
ONT
1 stop6h 45m
American Airlines
Tue 7/2112:59 am
ONT
-
MGM
2 stops11h 48m
American Airlines
Deal found 2/20$461

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 February 20, 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

$190
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. 7% potential increase in price ($36 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 20, 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

Thu 3/5

2:47 pm-9:05 pm

1 stop8h 18m

Ontario

Mon 3/9

5:09 pm-8:55 am

2 stops13h 46m

$334

MontgomeryOntario

MGM - ONT

MGMONT

Montgomery Dannelly Field

Mon 5/4

4:55 pm-9:58 pm

1 stop7h 03m

Ontario

Sat 5/9

6:00 am-4:20 pm

1 stop8h 20m

$388

MontgomeryOntario

MGM - ONT

MGMONT

Montgomery Dannelly Field

Thu 5/21

4:51 pm-9:55 pm

1 stop7h 04m

Ontario

Thu 5/28

5:45 am-4:16 pm

1 stop8h 31m

$448

MontgomeryOntario

MGM - ONT

MGMONT

Montgomery Dannelly Field

Fri 5/15

4:55 pm-9:58 pm

1 stop7h 03m

Ontario

Sun 5/17

6:00 am-4:20 pm

1 stop8h 20m

$483

MontgomeryOntario

MGM - ONT

MGMONT

Montgomery Dannelly Field

Wed 3/18

5:27 pm-11:59 pm

1 stop8h 32m

Ontario

Wed 3/25

11:58 pm-12:13 pm

2 stops10h 15m

$486

MontgomeryOntario

MGM - ONT

MGMONT

Montgomery Dannelly Field

Thu 3/19

6:00 am-11:47 am

1 stop7h 47m

Ontario

Mon 3/23

10:25 pm-8:55 am

1 stop8h 30m

$538

MontgomeryOntario

MGM - ONT

MGMONT

Montgomery Dannelly Field

Fri 4/10

5:00 pm-9:50 pm

1 stop6h 50m

Ontario

Sat 4/11

6:05 am-4:25 pm

1 stop8h 20m

$543

MontgomeryOntario

MGM - ONT

MGMONT

Montgomery Dannelly Field

Fri 7/10

4:55 pm-9:40 pm

1 stop6h 45m

$347

MontgomeryOntario

MGM - ONT

MGMONT

Montgomery Dannelly Field

Tue 3/10

2:59 pm-9:00 pm

1 stop8h 01m

$347

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/17

  • 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, February is the cheapest month in which you can book a flight from Montgomery, Alabama to Ontario (average of $140). 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 February 20, 2026.
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
7.9
Good
8,215 reviews

Crew

8.5

Entertainment

7.8

Overall

7.9

Boarding

8.1

Food

7.2

Comfort

7.9

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
7.9
Good
8,215 reviews
Delta
7.9
Good
8,215 reviews

Crew

8.5

Entertainment

7.8

Overall

7.9

Boarding

8.1

Food

7.2

Comfort

7.9

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
11,320 reviews
Delta
7.9
Good
8,215 reviews

Crew

8.5

Entertainment

7.8

Overall

7.9

Boarding

8.1

Food

7.2

Comfort

7.9

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 United Airlines fly from Montgomery, Alabama to Ontario in about 7h 03m. The time it takes to get you to your destination can typically vary by up to 1h 15m. 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 $298. 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, February is the cheapest month in which you can book a flight from Montgomery, Alabama to Ontario (average of $140). 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.

See more FAQs

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Alternative routes for Montgomery to Ontario

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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 February 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$298Average$402FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$320Average$648FlexibilityNo cancel feeOn-time71%

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