$348+ Cheap flights from Montgomery 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 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
MGM — ONT
Oct 5 — Oct 121
Round-trip
1 adult, Economy
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Find cheap flights from Montgomery to Ontario with Cheapflights
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Montgomery to OntarioExplore 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 5, 2026.
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 5, 2026.
This Delta deal was found by Cheapflights users on 9/2. 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 12/112:46 pm -
1 stop9h 10m
Sun 12/1311:08 pm -
1 stop7h 52m
Deal found 9/2![Delta logo]()
$348
This United Airlines deal was found by Cheapflights users on 9/3. 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 10/244:53 pm -
1 stop7h 06m
Sat 10/315:00 am -
2 stops9h 20m
Deal found 9/3![United Airlines logo]()
$354
This Delta deal was found by Cheapflights users on 9/2. 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 12/42:46 pm -
2 stops11h 12m
Sun 12/65:04 pm -
2 stops13h 56m
Deal found 9/2![Delta logo]()
$359
This United Airlines deal was found by Cheapflights users on 9/2. 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 11/144:55 pm -
1 stop6h 45m
Tue 11/176:00 am -
1 stop8h 20m
Deal found 9/2![United Airlines logo]()
$448
This United Airlines deal was found by Cheapflights users on 9/4. 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 10/304:55 pm -
1 stop6h 45m
Mon 11/26:00 am -
1 stop8h 20m
Deal found 9/4![United Airlines logo]()
$468
This Delta deal was found by Cheapflights users on 8/31. 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 9/112:30 pm -
1 stop9h 23m
Sat 9/55:05 pm -
2 stops14h 07m
Deal found 8/31![Delta logo]()
$470
This Delta deal was found by Cheapflights users on 8/31. 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 9/51:10 pm -
2 stops11h 13m
Tue 9/85:15 pm -
2 stops13h 48m
Deal found 8/31![Delta logo]()
$475
This Delta deal was found by Cheapflights users on 8/31. 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 9/112:30 pm -
1 stop9h 23m
Mon 9/710:00 pm -
1 stop9h 03m
Deal found 8/31![Delta logo]()
$486
Best flights from Montgomery to OntarioDiscover carefully curated flight deals from Montgomery to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 5, 2026.
Discover carefully curated flight deals from Montgomery to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 5, 2026.
This Delta deal was found by Cheapflights users on 9/2. 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 12/112:46 pm -
1 stop9h 10m
Sun 12/1311:08 pm -
1 stop7h 52m
Deal found 9/2![Delta logo]()
$348
This United Airlines deal was found by Cheapflights users on 9/3. 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 10/244:53 pm -
1 stop7h 06m
Sat 10/315:00 am -
2 stops9h 20m
Deal found 9/3![United Airlines logo]()
$354
This Delta deal was found by Cheapflights users on 9/2. 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 12/42:46 pm -
2 stops11h 12m
Sun 12/65:04 pm -
2 stops13h 56m
Deal found 9/2![Delta logo]()
$359
This United Airlines deal was found by Cheapflights users on 9/2. 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 11/144:55 pm -
1 stop6h 45m
Tue 11/176:00 am -
1 stop8h 20m
Deal found 9/2![United Airlines logo]()
$448
This United Airlines deal was found by Cheapflights users on 8/31. 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 10/164:53 pm -
1 stop7h 06m
Tue 10/206:00 am -
1 stop8h 17m
Deal found 8/31![United Airlines logo]()
$448
This United Airlines deal was found by Cheapflights users on 9/4. 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 10/14:53 pm -
1 stop7h 06m
Mon 10/56:00 am -
1 stop8h 17m
Deal found 9/4![United Airlines logo]()
$448
This United Airlines deal was found by Cheapflights users on 9/4. 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 10/304:55 pm -
1 stop6h 45m
Mon 11/26:00 am -
1 stop8h 20m
Deal found 9/4![United Airlines logo]()
$468
This United Airlines deal was found by Cheapflights users on 9/3. 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 10/224:53 pm -
1 stop7h 06m
Sun 10/256:00 am -
1 stop8h 20m
Deal found 9/3![United Airlines logo]()
$524
Last-minute flights from Montgomery to OntarioDiscover last-minute flight deals from Montgomery to Ontario. Data last updated September 5, 2026 and is based on user searches.
Discover last-minute flight deals from Montgomery to Ontario. Data last updated September 5, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/2. 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 9/37:09 am -
1 stop8h 22m
Sat 9/512:33 pm -
1 stop7h 58m
Deal found 9/2![American Airlines logo]()
$521
This Delta deal was found by Cheapflights users on 8/31. 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 9/312:30 pm -
1 stop8h 00m
Sat 9/55:05 pm -
2 stops14h 07m
Deal found 8/31![Delta logo]()
$527
This Delta deal was found by Cheapflights users on 8/31. 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 9/36:00 am -
1 stop6h 42m
Mon 9/710:00 pm -
1 stop9h 03m
Deal found 8/31![Delta logo]()
$543
This Delta deal was found by Cheapflights users on 8/31. 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 9/51:10 pm -
2 stops11h 13m
Tue 9/85:15 pm -
2 stops13h 48m
Deal found 8/31![Delta logo]()
$475
This Delta deal was found by Cheapflights users on 8/31. 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 9/51:10 pm -
2 stops11h 13m
Mon 9/710:00 pm -
1 stop9h 03m
Deal found 8/31![Delta logo]()
$492
This Delta deal was found by Cheapflights users on 8/31. 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.
Sun 9/66:00 am -
2 stops12h 24m
Tue 9/85:15 pm -
2 stops13h 48m
Deal found 8/31![Delta logo]()
$532
This United Airlines deal was found by Cheapflights users on 9/4. 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 10/14:53 pm -
1 stop7h 06m
Mon 10/56:00 am -
1 stop8h 17m
Deal found 9/4![United Airlines logo]()
$448
This United Airlines deal was found by Cheapflights users on 9/3. 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 10/224:53 pm -
1 stop7h 06m
Sun 10/256:00 am -
1 stop8h 20m
Deal found 9/3![United Airlines logo]()
$524
This United Airlines deal was found by Cheapflights users on 9/3. 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 10/244:53 pm -
1 stop7h 06m
Sat 10/316:00 am -
1 stop8h 20m
Deal found 9/3![United Airlines logo]()
$348
This United Airlines deal was found by Cheapflights users on 9/4. 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 10/304:55 pm -
1 stop6h 45m
Mon 11/26:00 am -
1 stop8h 20m
Deal found 9/4![United Airlines logo]()
$468
One-way flights from Montgomery to OntarioSearch for one-way flight options from Montgomery to Ontario. Find affordable one-way fares based on user searches. Data last updated September 5, 2026.
Search for one-way flight options from Montgomery to Ontario. Find affordable one-way fares based on user searches. Data last updated September 5, 2026.
This United Airlines deal was found by Cheapflights users on 9/1. 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 9/281:17 pm -
1 stop10h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![United Airlines logo]()
$367
This United Airlines deal was found by Cheapflights users on 9/1. 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 9/124:53 pm -
1 stop7h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![United Airlines logo]()
$437
This American Airlines deal was found by Cheapflights users on 9/1. 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 9/107:11 am -
1 stop8h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![American Airlines logo]()
$462
This United Airlines deal was found by Cheapflights users on 9/1. 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 9/101:17 pm -
2 stops9h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![United Airlines logo]()
$468
This American Airlines deal was found by Cheapflights users on 9/1. 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 9/117:11 am -
1 stop8h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![American Airlines logo]()
$491
This American Airlines deal was found by Cheapflights users on 9/1. 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.
Sat 9/127:00 am -
2 stops13h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![American Airlines logo]()
$515
This American Airlines deal was found by Cheapflights users on 9/1. 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.
Sun 9/1312:31 pm -
2 stops12h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![American Airlines logo]()
$668
This United Airlines deal was found by Cheapflights users on 9/1. 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 9/144:53 pm -
3 stops23h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![United Airlines logo]()
$723
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 September 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $348 (Delta) |
Popular in | January |
Cheapest in | February |
Average price | $348 |
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 7,457,451 searches. Data last updated September 5, 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
Cheapest round-trip
MontgomeryOntario
MGM Montgomery Dannelly Field - ONT Ontario
MGMONT
Montgomery Dannelly Field
Fri 12/11
2:46 pm-9:56 pm
1 stop9h 10m
Ontario
Sun 12/13
11:08 pm-9:00 am
1 stop7h 52m
$348
MontgomeryOntario
MGM Montgomery Dannelly Field - ONT Ontario
MGMONT
Montgomery Dannelly Field
Sat 10/24
4:53 pm-9:59 pm
1 stop7h 06m
Ontario
Sat 10/31
5:00 am-4:20 pm
2 stops9h 20m
$354
MontgomeryOntario
MGM Montgomery Dannelly Field - ONT Ontario
MGMONT
Montgomery Dannelly Field
Fri 12/4
2:46 pm-11:58 pm
2 stops11h 12m
Ontario
Sun 12/6
5:04 pm-9:00 am
2 stops13h 56m
$359
MontgomeryOntario
MGM Montgomery Dannelly Field - ONT Ontario
MGMONT
Montgomery Dannelly Field
Mon 9/28
4:53 pm-3:22 pm
2 stops24h 29m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$372
Quickest round-trip
MontgomeryOntario
MGM Montgomery Dannelly Field - ONT Ontario
MGMONT
Montgomery Dannelly Field
Sat 9/12
4:53 pm-9:59 pm
1 stop7h 06m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$437
MontgomeryOntario
MGM Montgomery Dannelly Field - ONT Ontario
MGMONT
Montgomery Dannelly Field
Sat 11/14
4:55 pm-9:40 pm
1 stop6h 45m
Ontario
Tue 11/17
6:00 am-4:20 pm
1 stop8h 20m
$448
MontgomeryOntario
MGM Montgomery Dannelly Field - ONT Ontario
MGMONT
Montgomery Dannelly Field
Fri 10/16
4:53 pm-9:59 pm
1 stop7h 06m
Ontario
Tue 10/20
6:00 am-4:17 pm
1 stop8h 17m
$448
MontgomeryOntario
MGM Montgomery Dannelly Field - ONT Ontario
MGMONT
Montgomery Dannelly Field
Thu 10/1
4:53 pm-9:59 pm
1 stop7h 06m
Ontario
Mon 10/5
6:00 am-4:17 pm
1 stop8h 17m
$448
MontgomeryOntario
MGM Montgomery Dannelly Field - ONT Ontario
MGMONT
Montgomery Dannelly Field
Mon 9/14
12:31 pm-6:07 pm
1 stop7h 36m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$462
MontgomeryOntario
MGM Montgomery Dannelly Field - ONT Ontario
MGMONT
Montgomery Dannelly Field
Sun 9/13
4:53 pm-9:59 pm
1 stop7h 06m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$462
Showing 1-10 of 14 resultsSorted by cheapest first
- Most accurate provider: When it comes to deals on Montgomery-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Montgomery-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Montgomery-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Montgomery-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-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.
MGM-ONT
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 September 5, 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.
Food
6.4
Overall
7.1
Entertainment
6.8
Crew
7.9
Comfort
7.2
Boarding
7.5
Reviews
1 / 20
2.0
MediocreAnonymous,Mar 2026
MIA - SFO
Food
6.4
Overall
7.1
Entertainment
6.8
Crew
7.9
Comfort
7.2
Boarding
7.5
Reviews
1 / 20
2.0
MediocreAnonymous,Mar 2026
MIA - SFO
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.
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Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from Montgomery to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 5, 2026.
Montgomery and Ontario flights
Browse other Montgomery and Ontario flight options. Last updated on September 5, 2026.
Other flights from Montgomery
Browse through other flights departing from Montgomery. Flights are based on user searches made on Cheapflights and were last updated on September 5, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 7,457,451 searches. Data last updated September 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$320 | Average$585 | FlexibilityNo cancel fee | On-time71% |