Find cheap Frontier flights to Ontario
ICT — ONT
Nov 11 — Nov 181
Round-trip
1 adult, Economy
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Cheapest Frontier flights from USA to OntarioExplore the most affordable Frontier flight options available from USA to Ontario. Find the lowest fares with prices last updated on October 12, 2026.
Explore the most affordable Frontier flight options available from USA to Ontario. Find the lowest fares with prices last updated on October 12, 2026.
This Trip.com deal was found by Cheapflights users on 10/10. 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.
Sat 11/79:17 am -
Nonstop2h 25m
Wed 11/1111:52 am -
Nonstop2h 21m
Deal found 10/10![Frontier logo]()
$71
This Frontier deal was found by Cheapflights users on 10/8. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/166:04 pm -
Nonstop1h 26m
Fri 11/208:31 pm -
Nonstop1h 33m
Deal found 10/8![Frontier logo]()
$75
This Super.com deal was found by Cheapflights users on 10/9. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/510:29 pm -
Nonstop2h 22m
Fri 11/611:52 am -
Nonstop2h 21m
Deal found 10/9![Frontier logo]()
$76
Best Frontier flights from USA to OntarioDiscover carefully curated Frontier 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 October 12, 2026.
Discover carefully curated Frontier 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 October 12, 2026.
This Super.com deal was found by Cheapflights users on 10/12. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2110:52 pm -
Nonstop2h 22m
Mon 11/236:45 am -
Nonstop2h 21m
Deal found 10/12![Frontier logo]()
$87
This Cheapflightsfares deal was found by Cheapflights users on 10/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/89:56 pm -
Nonstop1h 27m
Sat 12/127:26 pm -
Nonstop1h 35m
Deal found 10/12![Frontier logo]()
$93
This Frontier deal was found by Cheapflights users on 10/8. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/166:04 pm -
Nonstop1h 26m
Sun 11/2211:40 am -
1 stop13h 03m
Deal found 10/8![Frontier logo]()
$96
Direct Frontier flights from USA to OntarioExplore non-stop Frontier flight options from USA to Ontario based on user searches, and compare prices and availability for your desired travel dates. Data last updated October 12, 2026.
Explore non-stop Frontier flight options from USA to Ontario based on user searches, and compare prices and availability for your desired travel dates. Data last updated October 12, 2026.
This Trip.com deal was found by Cheapflights users on 10/10. 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.
Sat 11/79:17 am -
Nonstop2h 25m
Wed 11/1111:52 am -
Nonstop2h 21m
Deal found 10/10![Frontier logo]()
$71
This Kiwi.com deal was found by Cheapflights users on 10/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/39:56 pm -
Nonstop1h 23m
Fri 12/47:26 pm -
Nonstop1h 34m
Deal found 10/7![Frontier logo]()
$75
This Super.com deal was found by Cheapflights users on 10/9. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/510:29 pm -
Nonstop2h 22m
Fri 11/611:52 am -
Nonstop2h 21m
Deal found 10/9![Frontier logo]()
$76
Last-minute Frontier flights from USA to OntarioDiscover last-minute Frontier flight deals from USA to Ontario. Data last updated October 12, 2026 and is based on user searches.
Discover last-minute Frontier flight deals from USA to Ontario. Data last updated October 12, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 10/10. 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.
Sat 11/79:17 am -
Nonstop2h 25m
Wed 11/1111:52 am -
Nonstop2h 21m
Deal found 10/10![Frontier logo]()
$71
This Frontier deal was found by Cheapflights users on 10/8. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/166:04 pm -
Nonstop1h 26m
Fri 11/208:31 pm -
Nonstop1h 33m
Deal found 10/8![Frontier logo]()
$75
This Super.com deal was found by Cheapflights users on 10/9. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/510:29 pm -
Nonstop2h 22m
Fri 11/611:52 am -
Nonstop2h 21m
Deal found 10/9![Frontier logo]()
$76
One-way Frontier flights to OntarioSearch for one-way Frontier flight options to Ontario. Find affordable one-way fares based on user searches. Data last updated October 12, 2026.
Search for one-way Frontier flight options to Ontario. Find affordable one-way fares based on user searches. Data last updated October 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2610:52 pm -
Nonstop2h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/12![Frontier logo]()
$32
This Cheapflightsfares deal was found by Cheapflights users on 10/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/69:17 am -
Nonstop2h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/10![Frontier logo]()
$33
This Cheapflightsfares deal was found by Cheapflights users on 10/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/49:20 am -
Nonstop2h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/10![Frontier logo]()
$34
Flights to Ontario with Frontier at a glance
Find detailed information about Frontier flights from USA to Ontario. Explore the options provided by Frontier to plan your journey from USA to Ontario. Data last updated October 12, 2026.
Cheapflights Insights
Find cheap Frontier flights to Ontario
US0-ONT
DEN-ONT
SFO-ONT
How long is the flight to Ontario with Frontier?
On average, Frontier flights from the United States to Ontario take 3 hours 36 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.
Frontier weekly flight availability to Ontario
The most flights to Ontario operated by Frontier are scheduled on a Monday (15 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (6 on average).
When is the best time to book a flight to Ontario with Frontier?
The best time to book a flight to Ontario with Frontier is 43 days before departure. On average, fares are higher if you book 1 day before departure.
When is the cheapest time to fly to Ontario with Frontier?
Users looking for the cheapest Frontier fares to Ontario should consider flying on Monday evenings, when prices are typically cheapest. Budget-minded travellers will want to avoid Saturday at noon, when prices are usually at their highest.
FAQs about flights to Ontario with Frontier
Reviews of Frontier
See what Cheapflights users have to say about their Frontier experience.
Overview
Reviews
Frontier
2,542 reviews
Overview
Crew
6.5
Boarding
5.8
Entertainment
4.2
Comfort
5.4
Food
4.5
Recent reviews
2.0
|Sep 2026They charge $25 to check in with an agent and the only other option is to install the app, so I installed it just for this one flight. Then the app didn't find my reservation so they sent me to an agent anyway. The agent was unfriendly and printed my boarding pass without tsa pre check, so I had to go through the standard line. Also the flight was delayed two hours.
8.0
|Sep 2026I was traveling with a lap infant and got to TSA only to be turned around saying that something was wrong with my boarding pass. I went to an agent and said nothing was wrong, printed me a board pass and I had to rejoin the line. The when I get to the ticket counter I found out they changed my family seat even though I purchased it prior. I was told I got a refund so I’ll see
2.0
|Jul 2026Flight was delayed a whole day - no compensation on food or drinks. Gate staff gave an older gentleman a hard time about his confusion and concern regarding the overnight delay.
10.0
|Jul 2026Better Food and there was no entertainment . You guys could provide head phones and wifi for the passengers
2.0
|Jul 2026Flight delayed 3 hours
1 out of 848
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