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Ontario

$338+ 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
Jun 19 — Jun 261
Fri 6/19
Fri 6/26
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 May 20, 2026.

This Delta deal was found by Cheapflights users on 5/16. 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.
Tue 7/146:00 am
MGM
-
ONT
1 stop6h 38m
Delta
Fri 7/2410:00 pm
ONT
-
MGM
1 stop9h 12m
Delta
Deal found 5/16$338
This Delta deal was found by Cheapflights users on 5/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/86:00 am
MGM
-
ONT
1 stop6h 42m
Delta
Thu 8/1310:00 pm
ONT
-
MGM
1 stop9h 15m
Delta
Deal found 5/17$349
This Delta deal was found by Cheapflights users on 5/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/282:49 pm
MGM
-
ONT
1 stop9h 01m
Delta
Tue 8/1112:32 pm
ONT
-
MGM
1 stop8h 36m
Delta
Deal found 5/20$358
This Delta deal was found by Cheapflights users on 5/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/72:43 pm
MGM
-
ONT
1 stop9h 09m
Delta
Mon 8/1710:00 pm
ONT
-
MGM
1 stop9h 15m
Delta
Deal found 5/17$363
This Delta deal was found by Cheapflights users on 5/15. 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 6/312:39 pm
MGM
-
ONT
1 stop7h 57m
Delta
Fri 6/1210:00 pm
ONT
-
MGM
1 stop9h 13m
Delta
Deal found 5/15$373
This Delta deal was found by Cheapflights users on 5/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/292:49 pm
MGM
-
ONT
1 stop9h 01m
Delta
Thu 8/610:00 pm
ONT
-
MGM
1 stop9h 15m
Delta
Deal found 5/20$393
This Delta deal was found by Cheapflights users on 5/15. 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.
Tue 6/26:00 am
MGM
-
ONT
1 stop6h 57m
Delta
Fri 6/1210:00 pm
ONT
-
MGM
1 stop9h 13m
Delta
Deal found 5/15$396
This Delta deal was found by Cheapflights users on 5/16. 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.
Fri 7/172:49 pm
MGM
-
ONT
1 stop9h 01m
Delta
Sun 7/1910:00 pm
ONT
-
MGM
1 stop9h 12m
Delta
Deal found 5/16$403
This United Airlines deal was found by Cheapflights users on 5/20. 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.
Thu 6/44:51 pm
MGM
-
ONT
1 stop7h 04m
United Airlines
Mon 6/85:45 am
ONT
-
MGM
1 stop8h 31m
United Airlines
Deal found 5/20$408
This Delta deal was found by Cheapflights users on 5/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/312:49 pm
MGM
-
ONT
1 stop9h 01m
Delta
Mon 8/1010:00 pm
ONT
-
MGM
1 stop9h 15m
Delta
Deal found 5/20$413
This American Airlines deal was found by Cheapflights users on 5/20. 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.
Thu 6/43:20 pm
MGM
-
ONT
1 stop9h 16m
American Airlines
Mon 6/811:59 pm
ONT
-
MGM
2 stops12h 56m
American Airlines
Deal found 5/20$414

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 May 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$338
(Delta)

Popular in

September

Cheapest in

November

Average price

$585
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. 13% potential increase in price ($88 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 20, 2026.
Use the filters below to find and compare flights from Montgomery to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MontgomeryOntario

MGM - ONT

MGMONT

Montgomery Dannelly Field

Sat 8/8

6:00 am-10:42 am

1 stop6h 42m

Ontario

Mon 8/17

10:00 pm-9:15 am

1 stop9h 15m

$349

MontgomeryOntario

MGM - ONT

MGMONT

Montgomery Dannelly Field

Thu 7/30

2:49 pm-9:50 pm

1 stop9h 01m

Ontario

Thu 8/6

10:00 pm-9:15 am

1 stop9h 15m

$358

MontgomeryOntario

MGM - ONT

MGMONT

Montgomery Dannelly Field

Wed 7/29

2:49 pm-9:50 pm

1 stop9h 01m

Ontario

Fri 8/7

10:00 pm-9:15 am

1 stop9h 15m

$393

MontgomeryOntario

MGM - ONT

MGMONT

Montgomery Dannelly Field

Sun 8/9

6:00 am-10:42 am

1 stop6h 42m

Ontario

Sun 8/16

10:00 pm-9:15 am

1 stop9h 15m

$403

MontgomeryOntario

MGM - ONT

MGMONT

Montgomery Dannelly Field

Sat 8/1

4:51 pm-9:55 pm

1 stop7h 04m

Ontario

Wed 8/5

5:45 am-4:16 pm

1 stop8h 31m

$438

MontgomeryOntario

MGM - ONT

MGMONT

Montgomery Dannelly Field

Wed 7/29

4:51 pm-9:55 pm

1 stop7h 04m

Ontario

Wed 8/5

5:45 am-4:16 pm

1 stop8h 31m

$438

MontgomeryOntario

MGM - ONT

MGMONT

Montgomery Dannelly Field

Sat 7/4

7:00 am-1:20 pm

1 stop8h 20m

Ontario

Sat 7/11

2:15 pm-11:28 pm

1 stop7h 13m

$449

MontgomeryOntario

MGM - ONT

MGMONT

Montgomery Dannelly Field

Tue 6/2

2:59 pm-9:48 pm

1 stop8h 49m

Ontario

Tue 6/9

11:50 am-11:12 pm

1 stop9h 22m

$454

MontgomeryOntario

MGM - ONT

MGMONT

Montgomery Dannelly Field

Sat 6/6

4:00 pm-9:48 pm

1 stop7h 48m

Ontario

Tue 6/9

11:50 am-11:12 pm

1 stop9h 22m

$454
Quickest round-trip

MontgomeryOntario

MGM - ONT

MGMONT

Montgomery Dannelly Field

Sat 7/4

12:44 pm-6:30 pm

1 stop7h 46m

Ontario

Sat 7/11

12:00 pm-8:26 pm

1 stop6h 26m

$463

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/17

Showing 1-10 of 15 resultsSorted by cheapest first
1
2
  • 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.

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 May 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
8,454 reviews

Boarding

8.1

Food

7.2

Crew

8.5

Overall

7.9

Entertainment

7.8

Comfort

7.8

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
8,454 reviews
Delta
7.9
Good
8,454 reviews

Boarding

8.1

Food

7.2

Crew

8.5

Overall

7.9

Entertainment

7.8

Comfort

7.8

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
7.1
Good
11,642 reviews
Delta
7.9
Good
8,454 reviews

Boarding

8.1

Food

7.2

Crew

8.5

Overall

7.9

Entertainment

7.8

Comfort

7.8

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 6h 42m. The time it takes to get you to your destination can typically vary by up to 22m. 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. Delta is currently priced 44% below the average price you’ll pay for this route.

  • 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.

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 May 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$298Average$433FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$370Average$585FlexibilityNo cancel feeOn-time71%

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