Find cheap Alaska Airlines flights to Ontario
ICT — ONT
Aug 27 — Sep 31
Round-trip
1 adult, Economy
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Cheapest Alaska Airlines flights from USA to OntarioExplore the most affordable Alaska Airlines flight options available from USA to Ontario. Find the lowest fares with prices last updated on July 28, 2026.
Explore the most affordable Alaska Airlines flight options available from USA to Ontario. Find the lowest fares with prices last updated on July 28, 2026.
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/138:33 am
SEA
- ONT
Nonstop2h 41m
Alaska Airlines
Sun 8/165:26 pm
ONT
- SEA
Nonstop2h 40m
Alaska Airlines
Deal found 7/23![Alaska Airlines logo]()
$217
This iWofly 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/58:33 am
SEA
- ONT
Nonstop2h 41m
Alaska Airlines
Wed 8/55:54 pm
ONT
- SEA
Nonstop2h 40m
Alaska Airlines
Deal found 7/26![Alaska Airlines logo]()
$219
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/156:59 pm
SEA
- ONT
1 stop4h 53m
Alaska Airlines
Tue 8/2512:00 pm
ONT
- SEA
Nonstop2h 43m
Alaska Airlines
Deal found 7/23![Alaska Airlines logo]()
$227
Best Alaska Airlines flights from USA to OntarioDiscover carefully curated Alaska 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 28, 2026.
Discover carefully curated Alaska 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 28, 2026.
This Alaska Airlines deal was found by Cheapflights users on 7/24. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/208:43 pm
SEA
- ONT
Nonstop2h 41m
Alaska Airlines
Mon 8/2412:00 pm
ONT
- SEA
Nonstop2h 43m
Alaska Airlines
Deal found 7/24![Alaska Airlines logo]()
$217
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/145:49 pm
SEA
- ONT
Nonstop2h 41m
Alaska Airlines
Fri 8/217:59 pm
ONT
- SEA
Nonstop2h 42m
Alaska Airlines
Deal found 7/23![Alaska Airlines logo]()
$217
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/207:18 am
SEA
- ONT
1 stop8h 52m
Alaska Airlines
Fri 8/287:12 am
ONT
- SEA
1 stop5h 38m
Alaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$237
Direct Alaska Airlines flights from USA to OntarioExplore non-stop Alaska 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 28, 2026.
Explore non-stop Alaska 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 28, 2026.
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/138:33 pm
SEA
- ONT
Nonstop2h 38m
Alaska Airlines
Fri 8/217:59 pm
ONT
- SEA
Nonstop2h 42m
Alaska Airlines
Deal found 7/23![Alaska Airlines logo]()
$217
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/88:23 am
SEA
- ONT
Nonstop2h 53m
Alaska Airlines
Tue 9/156:02 am
ONT
- SEA
Nonstop2h 43m
Alaska Airlines
Deal found 7/25![Alaska Airlines logo]()
$227
This Vliegwinkel 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1211:29 am
SEA
- ONT
Nonstop2h 47m
Alaska Airlines
Sun 9/136:02 am
ONT
- SEA
Nonstop2h 43m
Alaska Airlines
Deal found 7/23![Alaska Airlines logo]()
$236
Last-minute Alaska Airlines flights from USA to OntarioDiscover last-minute Alaska Airlines flight deals from USA to Ontario. Data last updated July 28, 2026 and is based on user searches.
Discover last-minute Alaska Airlines flight deals from USA to Ontario. Data last updated July 28, 2026 and is based on user searches.
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/138:33 am
SEA
- ONT
Nonstop2h 41m
Alaska Airlines
Sun 8/165:26 pm
ONT
- SEA
Nonstop2h 40m
Alaska Airlines
Deal found 7/23![Alaska Airlines logo]()
$217
This iWofly 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/58:33 am
SEA
- ONT
Nonstop2h 41m
Alaska Airlines
Wed 8/55:54 pm
ONT
- SEA
Nonstop2h 40m
Alaska Airlines
Deal found 7/26![Alaska Airlines logo]()
$219
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/156:59 pm
SEA
- ONT
1 stop4h 53m
Alaska Airlines
Tue 8/2512:00 pm
ONT
- SEA
Nonstop2h 43m
Alaska Airlines
Deal found 7/23![Alaska Airlines logo]()
$227
One-way Alaska Airlines flights to OntarioSearch for one-way Alaska Airlines flight options to Ontario. Find affordable one-way fares based on user searches. Data last updated July 28, 2026.
Search for one-way Alaska Airlines flight options to Ontario. Find affordable one-way fares based on user searches. Data last updated July 28, 2026.
This Alaska Airlines deal was found by Cheapflights users on 7/24. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1510:12 am
SEA
- ONT
1 stop5h 26m
Alaska Airlines
Deal found 7/24![Alaska Airlines logo]()
$119
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2410:58 am
SEA
- ONT
1 stop6h 07m
Alaska Airlines
Deal found 7/26![Alaska Airlines logo]()
$124
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/126:02 am
DEN
- ONT
1 stop8h 07m
Alaska Airlines
Deal found 7/23![Alaska Airlines logo]()
$127
Flights to Ontario with Alaska Airlines at a glance
Find detailed information about Alaska Airlines flights from USA to Ontario. Explore the options provided by Alaska Airlines to plan your journey from USA to Ontario. Data last updated July 28, 2026.
Cheapflights Insights
Find cheap Alaska Airlines flights to Ontario
US0-ONT
SEA-ONT
DEN-ONT
How long is the flight to Ontario with Alaska Airlines?
On average, Alaska Airlines flights from the United States to Ontario take 3 hours 44 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.
Alaska Airlines weekly flight availability to Ontario
The most flights to Ontario operated by Alaska Airlines are scheduled on a Friday (18 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (12 on average).
When is the best time to book a flight to Ontario with Alaska Airlines?
The best time to book a flight to Ontario with Alaska Airlines is 55 days before departure. On average, fares are higher if you book on the same day as departure.
When is the cheapest time to fly to Ontario with Alaska Airlines?
Users looking for the cheapest Alaska Airlines fares to Ontario should consider flying on Tuesday afternoons, when prices are typically cheapest. Budget-minded travellers will want to avoid Sunday afternoons, when prices are usually at their highest.
FAQs about flights to Ontario with Alaska Airlines
Reviews of Alaska Airlines
See what Cheapflights users have to say about their Alaska Airlines experience.
Overview
Reviews
Alaska Airlines
10,000 reviews
Overview
Crew
8.5
Entertainment
7.0
Comfort
7.8
Boarding
8.1
Food
7.0
Recent reviews
10.0
|Jul 2026Excellent service as usual
6.0
|Jul 2026Alaska has a brilliant crew. And the seats are good. As much as i loved my trip from Heathrow to Seattle, i definitely did not feel the same on the return flight. A lot was due to feeling very cramped and unfortunately for me, i had a kicker behind me and a passenger who did not stop moving (but constantly) next to me. The good was not good and i noticed that most people around me left most of their meal. The ice cream was very nice. I did not have breakfast. However the food was very nice on the way to Seattle
10.0
|Jun 2026Comfortable seats and friendly crew.
10.0
|Jun 2026It's my first time flying with Alaska Airlines. All in all it was very good. Excellent crew and the meal was really good .. best mashed potato!! Black point: not waking me up for breakfast. Having departed late from London and arriving in Seattle late at night, it would have been nice to have found a meal on the table when i woke up. Although the crew was very lovely, kind and helpful, I did find it a little regimented in their approach. Also the constant interruptions announcing what we were eating next and unnecessary announcements.
4.0
|Jun 2026There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.
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