$30+ Cheap flights from Fremont, CA to Ontario (ONT)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — ONT
Sep 7 — Sep 141
Round-trip
1 adult, Economy
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Find cheap flights from Fremont to Ontario with Cheapflights
1. Tell us where you want to go
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Fremont to Ontario are usually found in September or August, booked 70 days in advance, depart on a Monday or Wednesday and return on a Friday
Cheap flight deals from Fremont to Ontario
Cheapest
Best
Last-minute
One-way
Cheapest flights from Fremont to OntarioExplore the most affordable flight options available from Fremont to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 8, 2026.
Explore the most affordable flight options available from Fremont to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 8, 2026.
This Super.com deal was found by Cheapflights users on 8/4. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/299:33 am -
Nonstop1h 29m
Wed 9/23:13 pm -
Nonstop1h 27m
Deal found 8/4![Frontier logo]()
$59
This Frontier deal was found by Cheapflights users on 8/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2612:33 pm -
Nonstop1h 30m
Tue 9/13:13 pm -
Nonstop1h 27m
Deal found 8/3![Frontier logo]()
$60
This Frontier deal was found by Cheapflights users on 8/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:02 pm -
Nonstop1h 34m
Thu 9/2412:07 pm -
Nonstop1h 36m
Deal found 8/3![Frontier logo]()
$61
This Super.com deal was found by Cheapflights users on 8/5. 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.
Wed 9/212:57 pm -
Nonstop1h 30m
Sun 9/68:48 am -
Nonstop1h 27m
Deal found 8/5![Frontier logo]()
$62
This Frontier deal was found by Cheapflights users on 8/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:02 pm -
Nonstop1h 34m
Mon 9/1412:07 pm -
Nonstop1h 36m
Deal found 8/3![Frontier logo]()
$63
This Trip.com deal was found by Cheapflights users on 8/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/39:00 am -
Nonstop1h 29m
Mon 9/78:48 am -
Nonstop1h 27m
Deal found 8/3![Frontier logo]()
$65
This Frontier deal was found by Cheapflights users on 8/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/69:00 am -
Nonstop1h 29m
Fri 9/1112:07 pm -
Nonstop1h 36m
Deal found 8/4![Frontier logo]()
$66
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/249:33 am -
Nonstop1h 29m
Sat 8/298:48 am -
Nonstop1h 27m
Deal found 8/4![Frontier logo]()
$71
This Super.com deal was found by Cheapflights users on 8/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/127:19 pm -
Nonstop1h 29m
Mon 11/1611:38 am -
Nonstop1h 34m
Deal found 8/3![Frontier logo]()
$72
This Frontier deal was found by Cheapflights users on 8/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2612:33 pm -
Nonstop1h 30m
Mon 8/318:48 am -
Nonstop1h 27m
Deal found 8/4![Frontier logo]()
$73
Best flights from Fremont to OntarioDiscover carefully curated flight deals from Fremont to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 8, 2026.
Discover carefully curated flight deals from Fremont to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 8, 2026.
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Tue 10/137:00 pm -
Nonstop1h 31m
Thu 11/56:00 am -
Nonstop1h 30m
Deal found 8/5![United Airlines logo]()
$151
This Southwest deal was found by Cheapflights users on 8/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/275:10 am -
1 stop4h 45m
Thu 8/275:45 pm -
1 stop5h 40m
Deal found 8/3![Southwest logo]()
$171
This Southwest deal was found by Cheapflights users on 8/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/35:00 am -
1 stop3h 45m
Mon 10/55:15 pm -
2 stops7h 20m
Deal found 8/5![Southwest logo]()
$176
This United Airlines deal was found by Cheapflights users on 8/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1210:37 am -
Nonstop1h 35m
Sat 9/191:56 pm -
Nonstop1h 29m
Deal found 8/7![United Airlines logo]()
$221
This Southwest deal was found by Cheapflights users on 8/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/287:00 am -
1 stop6h 25m
Mon 8/312:40 pm -
2 stops7h 00m
Deal found 8/7![Southwest logo]()
$218
This United Airlines deal was found by Cheapflights users on 8/4. 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.
Sat 9/124:40 pm -
Nonstop1h 31m
Mon 9/149:01 am -
Nonstop1h 29m
Deal found 8/4![United Airlines logo]()
$222
This United Airlines deal was found by Cheapflights users on 8/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1110:37 am -
Nonstop1h 35m
Mon 9/149:01 am -
Nonstop1h 29m
Deal found 8/7![United Airlines logo]()
$225
This Southwest deal was found by Cheapflights users on 8/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/210:40 am -
2 stops10h 15m
Thu 9/38:00 am -
2 stops6h 40m
Deal found 8/3![Southwest logo]()
$244
This Southwest deal was found by Cheapflights users on 8/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/245:10 am -
1 stop6h 15m
Sun 9/272:30 pm -
2 stops7h 10m
Deal found 8/7![Southwest logo]()
$293
This United Airlines deal was found by Cheapflights users on 8/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/178:40 am -
Nonstop1h 43m
Sun 10/1811:10 am -
Nonstop1h 33m
Deal found 8/7![United Airlines logo]()
$305
This Southwest deal was found by Cheapflights users on 8/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/234:10 pm -
2 stops6h 10m
Wed 8/265:45 am -
1 stop5h 20m
Deal found 8/4![Southwest logo]()
$300
Last-minute flights from Fremont to OntarioDiscover last-minute flight deals from Fremont to Ontario. Data last updated August 8, 2026 and is based on user searches.
Discover last-minute flight deals from Fremont to Ontario. Data last updated August 8, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/249:33 am -
Nonstop1h 29m
Sat 8/298:48 am -
Nonstop1h 27m
Deal found 8/4![Frontier logo]()
$71
This Super.com deal was found by Cheapflights users on 8/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/249:33 am -
Nonstop1h 29m
Thu 9/38:48 am -
Nonstop1h 27m
Deal found 8/3![Frontier logo]()
$72
This Frontier deal was found by Cheapflights users on 8/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2612:33 pm -
Nonstop1h 30m
Tue 9/13:13 pm -
Nonstop1h 27m
Deal found 8/3![Frontier logo]()
$60
This Booking.com deal was found by Cheapflights users on 8/6. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2612:33 pm -
Nonstop1h 30m
Mon 8/318:48 am -
Nonstop1h 27m
Deal found 8/6![Frontier logo]()
$74
This Super.com deal was found by Cheapflights users on 8/4. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/112:57 pm -
Nonstop1h 30m
Tue 9/83:13 pm -
Nonstop1h 27m
Deal found 8/4![Frontier logo]()
$59
This Super.com deal was found by Cheapflights users on 8/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/212:57 pm -
Nonstop1h 30m
Sun 9/68:48 am -
Nonstop1h 27m
Deal found 8/3![Frontier logo]()
$62
This Trip.com deal was found by Cheapflights users on 8/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/39:00 am -
Nonstop1h 29m
Mon 9/78:48 am -
Nonstop1h 27m
Deal found 8/3![Frontier logo]()
$65
This Frontier deal was found by Cheapflights users on 8/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/69:00 am -
Nonstop1h 29m
Fri 9/1112:07 pm -
Nonstop1h 36m
Deal found 8/4![Frontier logo]()
$66
This Frontier deal was found by Cheapflights users on 8/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:02 pm -
Nonstop1h 34m
Mon 9/1412:07 pm -
Nonstop1h 36m
Deal found 8/3![Frontier logo]()
$63
This Frontier deal was found by Cheapflights users on 8/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:02 pm -
Nonstop1h 34m
Thu 9/2412:07 pm -
Nonstop1h 36m
Deal found 8/3![Frontier logo]()
$61
One-way flights from Fremont to OntarioSearch for one-way flight options from Fremont to Ontario. Find affordable one-way fares based on user searches. Data last updated August 8, 2026.
Search for one-way flight options from Fremont to Ontario. Find affordable one-way fares based on user searches. Data last updated August 8, 2026.
This Frontier deal was found by Cheapflights users on 8/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/812:57 pm -
Nonstop1h 30m
Deal found 8/3![Frontier logo]()
$30
This Frontier deal was found by Cheapflights users on 8/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:02 pm -
Nonstop1h 34m
Deal found 8/3![Frontier logo]()
$31
This Super.com deal was found by Cheapflights users on 8/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:02 pm -
Nonstop1h 34m
Deal found 8/3![Frontier logo]()
$33
This CheapOair deal was found by Cheapflights users on 8/4. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1212:31 pm -
Nonstop1h 29m
Deal found 8/4![Frontier logo]()
$35
This Trip.com deal was found by Cheapflights users on 8/7. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1612:11 pm -
Nonstop1h 29m
Deal found 8/7![Frontier logo]()
$37
This Super.com deal was found by Cheapflights users on 8/7. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/69:00 am -
Nonstop1h 29m
Deal found 8/7![Frontier logo]()
$42
This Frontier deal was found by Cheapflights users on 8/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:41 am -
Nonstop1h 29m
Deal found 8/4![Frontier logo]()
$43
This Super.com deal was found by Cheapflights users on 8/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1912:11 pm -
Nonstop1h 29m
Deal found 8/3![Frontier logo]()
$46
This Frontier deal was found by Cheapflights users on 8/6. 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.
Thu 12/107:41 am -
Nonstop1h 29m
Deal found 8/6![Frontier logo]()
$47
This Super.com deal was found by Cheapflights users on 8/6. 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.
Fri 10/3012:11 pm -
Nonstop1h 29m
Deal found 8/6![Frontier logo]()
$48
Find flight deals from Fremont to Ontario
Keep the following information in mind while searching for Fremont to Ontario flight deals. Data was last updated August 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $59 (Super.com) |
One-way from | $30 (Frontier) |
Popular in | February |
Cheapest in | September |
Average price | $169 |
Cheapflights Fare Finder
Customize your flight search to find flights from Fremont 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 August 8, 2026.
Use the filters below to find and compare flights from Fremont to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San FranciscoOntario
SFO San Francisco - ONT Ontario
SFOONT
San Francisco
Tue 10/13
7:00 pm-8:31 pm
Nonstop1h 31m
Ontario
Thu 11/5
6:00 am-7:30 am
Nonstop1h 30m
$151
San FranciscoOntario
SFO San Francisco - ONT Ontario
SFOONT
San Francisco
Thu 8/27
5:10 am-9:55 am
1 stop4h 45m
Ontario
Thu 8/27
5:45 pm-11:25 pm
1 stop5h 40m
$171
San FranciscoOntario
SFO San Francisco - ONT Ontario
SFOONT
San Francisco
Sat 10/3
5:00 am-8:45 am
1 stop3h 45m
Ontario
Mon 10/5
5:15 pm-12:35 am
2 stops7h 20m
$176
San FranciscoOntario
SFO San Francisco - ONT Ontario
SFOONT
San Francisco
Fri 8/28
7:00 am-1:25 pm
1 stop6h 25m
Ontario
Mon 8/31
2:40 pm-9:40 pm
2 stops7h 00m
$218
San FranciscoOntario
SFO San Francisco - ONT Ontario
SFOONT
San Francisco
Sat 9/12
10:37 am-12:12 pm
Nonstop1h 35m
Ontario
Sat 9/19
1:56 pm-3:25 pm
Nonstop1h 29m
$221
Quickest round-trip
San FranciscoOntario
SFO San Francisco - ONT Ontario
SFOONT
San Francisco
Sat 9/12
4:40 pm-6:11 pm
Nonstop1h 31m
Ontario
Mon 9/14
9:01 am-10:30 am
Nonstop1h 29m
$222
San FranciscoOntario
SFO San Francisco - ONT Ontario
SFOONT
San Francisco
Fri 9/11
10:37 am-12:12 pm
Nonstop1h 35m
Ontario
Mon 9/14
9:01 am-10:30 am
Nonstop1h 29m
$225
San FranciscoOntario
SFO San Francisco - ONT Ontario
SFOONT
San Francisco
Wed 9/2
10:40 am-8:55 pm
2 stops10h 15m
Ontario
Thu 9/3
8:00 am-2:40 pm
2 stops6h 40m
$244
San FranciscoOntario
SFO San Francisco - ONT Ontario
SFOONT
San Francisco
Thu 9/24
5:10 am-11:25 am
1 stop6h 15m
Ontario
Sun 9/27
2:30 pm-9:40 pm
2 stops7h 10m
$293
San FranciscoOntario
SFO San Francisco - ONT Ontario
SFOONT
San Francisco
Sun 8/23
4:10 pm-10:20 pm
2 stops6h 10m
Ontario
Wed 8/26
5:45 am-11:05 am
1 stop5h 20m
$300
Showing 1-10 of 22 resultsSorted by cheapest first
Best time to book a flight from Fremont to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Fremont with our price prediction graph.
SFO-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.
Cheapflights Insights
Everything you need to know about your flight from Fremont to Ontario
FR8-ONT
SFO-ONT
What is the cheapest time of day to fly from FR8 to ONT?
Find hourly flight availability from Fremont to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 8, 2026.
One of the essential ways to save on airfare from Fremont to Ontario is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 15% on airfare.
Weekly flight availability from Fremont to Ontario
Explore weekly flight availability from Fremont to Ontario. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated August 8, 2026.
The most flights from FR8 to ONT are scheduled on a Wednesday (10 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).
How much does it cost to fly round-trip from Fremont to Ontario?
Airfare is below average for this route at the moment.
Fremont to Ontario flights typically cost between $89 and $263 in September.The cheapest round-trip price found within the last 5 days was $59 on Frontier (Sep 1-Sep 8).
What is the cheapest day to fly from Fremont to Ontario?
Use this chart to determine the cheapest time to fly round-trip from Fremont to Ontario. Price data was last updated on August 8, 2026.
Travelers seeking maximum savings on their Fremont to Ontario flight should consider departing on Sunday evenings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
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 August 8, 2026.
See what other customers who have flown with Alaska Airlines,Delta, andUnited Airlines from Fremont 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.
Entertainment
7.0
Food
7.0
Comfort
7.8
Crew
8.5
Overall
7.9
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Entertainment
7.0
Food
7.0
Comfort
7.8
Crew
8.5
Overall
7.9
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Entertainment
7.0
Food
7.0
Comfort
7.8
Crew
8.5
Overall
7.9
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Entertainment
7.0
Food
7.0
Comfort
7.8
Crew
8.5
Overall
7.9
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Entertainment
7.0
Food
7.0
Comfort
7.8
Crew
8.5
Overall
7.9
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Entertainment
7.0
Food
7.0
Comfort
7.8
Crew
8.5
Overall
7.9
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Related info for your journey
Find useful and relevant information for your journey from Fremont 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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Alternative routes for Fremont to Ontario
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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.
Search flights from Fremont to Ontario by cabin class
Find flights from Fremont 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 August 8, 2026.
Fremont and Ontario flights
Browse other Fremont and Ontario flight options. Last updated on August 8, 2026.
Popular flight searches
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Fremont to Ontario flights
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Top 6 airlines flying from Fremont to Ontario
Discover the top 6 airlines that operate flights from Fremont 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 August 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$39 | Average$160 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$66 | Average$241 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$109 | Average$247 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$117 | Average$247 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$137 | Average$283 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$142 | Average$302 | FlexibilityNo cancel fee | On-time62% |