Find cheap American Airlines flights to Ontario
CMH — ONT
Aug 26 — Sep 21
Round-trip
1 adult, Economy
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Cheapest American Airlines flights from USA to OntarioExplore the most affordable American Airlines flight options available from USA to Ontario. Find the lowest fares with prices last updated on July 27, 2026.
Explore the most affordable American Airlines flight options available from USA to Ontario. Find the lowest fares with prices last updated on July 27, 2026.
This American Airlines deal was found by Cheapflights users on 7/26. 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 8/208:29 am
DEN
- ONT
1 stop4h 34m
American Airlines
Mon 8/244:07 pm
ONT
- DEN
1 stop4h 35m
American Airlines
Deal found 7/26![American Airlines logo]()
$177
This American Airlines deal was found by Cheapflights users on 7/22. 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 8/136:00 am
IAH
- ONT
1 stop5h 34m
American Airlines
Wed 8/192:27 pm
ONT
- IAH
1 stop5h 53m
American Airlines
Deal found 7/22![American Airlines logo]()
$225
This American Airlines deal was found by Cheapflights users on 7/25. 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 8/1512:52 pm
DFW
- ONT
Nonstop3h 01m
American Airlines
Sat 8/222:43 pm
ONT
- DFW
Nonstop3h 16m
American Airlines
Deal found 7/25![American Airlines logo]()
$255
Best American Airlines flights from USA to OntarioDiscover carefully curated American Airlines flight deals from USA to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 27, 2026.
Discover carefully curated American Airlines flight deals from USA to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 27, 2026.
This American Airlines deal was found by Cheapflights users on 7/26. 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 8/278:29 am
DEN
- ONT
1 stop4h 34m
American Airlines
Mon 8/314:07 pm
ONT
- DEN
1 stop4h 35m
American Airlines
Deal found 7/26![American Airlines logo]()
$177
This American Airlines deal was found by Cheapflights users on 7/27. 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 8/208:29 am
DEN
- ONT
1 stop4h 34m
American Airlines
Mon 8/244:07 pm
ONT
- DEN
1 stop4h 35m
American Airlines
Deal found 7/27![American Airlines logo]()
$177
This American Airlines deal was found by Cheapflights users on 7/22. 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 9/58:29 am
DEN
- ONT
1 stop4h 34m
American Airlines
Sun 9/610:00 am
ONT
- DEN
1 stop4h 07m
American Airlines
Deal found 7/22![American Airlines logo]()
$182
Direct American Airlines flights from USA to OntarioExplore non-stop American Airlines flight options from USA to Ontario based on user searches, and compare prices and availability for your desired travel dates. Data last updated July 27, 2026.
Explore non-stop American Airlines flight options from USA to Ontario based on user searches, and compare prices and availability for your desired travel dates. Data last updated July 27, 2026.
This American Airlines deal was found by Cheapflights users on 7/25. 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 8/1512:52 pm
DFW
- ONT
Nonstop3h 01m
American Airlines
Sat 8/222:43 pm
ONT
- DFW
Nonstop3h 16m
American Airlines
Deal found 7/25![American Airlines logo]()
$255
This American Airlines deal was found by Cheapflights users on 7/23. 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 9/68:30 am
DFW
- ONT
Nonstop3h 04m
American Airlines
Sun 9/62:27 pm
ONT
- DFW
Nonstop3h 16m
American Airlines
Deal found 7/23![American Airlines logo]()
$265
This American Airlines deal was found by Cheapflights users on 7/23. 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 8/2010:41 am
DFW
- ONT
Nonstop3h 02m
American Airlines
Thu 8/276:00 am
ONT
- DFW
Nonstop3h 09m
American Airlines
Deal found 7/23![American Airlines logo]()
$291
Last-minute American Airlines flights from USA to OntarioDiscover last-minute American Airlines flight deals from USA to Ontario. Data last updated July 27, 2026 and is based on user searches.
Discover last-minute American Airlines flight deals from USA to Ontario. Data last updated July 27, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 7/26. 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 8/208:29 am
DEN
- ONT
1 stop4h 34m
American Airlines
Mon 8/244:07 pm
ONT
- DEN
1 stop4h 35m
American Airlines
Deal found 7/26![American Airlines logo]()
$177
This American Airlines deal was found by Cheapflights users on 7/22. 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 8/136:00 am
IAH
- ONT
1 stop5h 34m
American Airlines
Wed 8/192:27 pm
ONT
- IAH
1 stop5h 53m
American Airlines
Deal found 7/22![American Airlines logo]()
$225
This American Airlines deal was found by Cheapflights users on 7/25. 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 8/1512:52 pm
DFW
- ONT
Nonstop3h 01m
American Airlines
Sat 8/222:43 pm
ONT
- DFW
Nonstop3h 16m
American Airlines
Deal found 7/25![American Airlines logo]()
$255
One-way American Airlines flights to OntarioSearch for one-way American Airlines flight options to Ontario. Find affordable one-way fares based on user searches. Data last updated July 27, 2026.
Search for one-way American Airlines flight options to Ontario. Find affordable one-way fares based on user searches. Data last updated July 27, 2026.
This American Airlines deal was found by Cheapflights users on 7/26. 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 9/58:29 am
DEN
- ONT
1 stop4h 34m
American Airlines
Deal found 7/26![American Airlines logo]()
$89
This American Airlines deal was found by Cheapflights users on 7/23. 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 9/267:15 am
DEN
- ONT
1 stop5h 48m
American Airlines
Deal found 7/23![American Airlines logo]()
$90
This American Airlines deal was found by Cheapflights users on 7/22. 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 9/306:00 am
IAH
- ONT
1 stop7h 47m
American Airlines
Deal found 7/22![American Airlines logo]()
$113
Flights to Ontario with American Airlines at a glance
Find detailed information about American Airlines flights from USA to Ontario. Explore the options provided by American Airlines to plan your journey from USA to Ontario. Data last updated July 27, 2026.
Cheapflights Insights
Find cheap American Airlines flights to Ontario
US0-ONT
DFW-ONT
DEN-ONT
IAH-ONT
How long is the flight to Ontario with American Airlines?
On average, American Airlines flights from the United States to Ontario take 3 hours 20 minutes. Flights to Ontario from other popular cities in the United States will vary in length. Below are a few examples of popular routes and their flight times.
American Airlines weekly flight availability to Ontario
The most flights to Ontario operated by American Airlines are scheduled on a Monday (10 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 on average).
When is the best time to book a flight to Ontario with American Airlines?
The best time to book a flight to Ontario with American Airlines is 89 days before departure. On average, fares are higher if you book 8 days before departure.
FAQs about flights to Ontario with American Airlines
Reviews of American Airlines
See what Cheapflights users have to say about their American Airlines experience.
Overview
Reviews
American Airlines
10,000 reviews
Overview
Boarding
7.5
Crew
7.9
Food
6.4
Comfort
7.2
Entertainment
6.8
Recent reviews
10.0
|Jul 2026Awesome staff friendly and curtious
10.0
|Jul 2026Very helpful and friendly people who pushed me where I needed to go
6.0
|Jul 2026We got delayed because of filling up more gas then a storm hit after that so we sat in the plane for 1.5 hours more. It was hot while we waited.
8.0
|Jul 2026The flight was great overall. But we need better food on flights and the baggage fees are too high.
10.0
|May 2026Very modern and confortable plane. Dinner was delicious. Whole crew were polite and perfect.
1 out of 3334
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