Cheap First Class Flights from San Francisco to Ontario
SFO — ONT
Aug 16 — Aug 231
Round-trip
1 adult, First
We work with more than 300 partners to bring you better travel deals
Leverage Cheapflights for Your Next Trip
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.Essential info for First Class flights from San Francisco to Ontario
Find the latest flights to Ontario in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 2,558,603 searches and data were last updated on July 17, 2026.
Top Rated Airline | American Airlines |
|---|---|
No. of Airlines | 4 |
Arrival Airport | Los Angeles Airport |
Find First Class flight deals from San Francisco to Ontario
Cheapest
Best
One-way
Quickest
Cheapest first class flights to OntarioExplore the most affordable first class flight options available to Ontario. Find the lowest fares based on data from user searches, with prices last updated on July 17, 2026.
Explore the most affordable first class flight options available to Ontario. Find the lowest fares based on data from user searches, with prices last updated on July 17, 2026.
This United Airlines deal was found by Cheapflights users on 7/15. 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 8/222:10 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Tue 8/259:01 am
ONT
- SFO
Nonstop1h 29m
United Airlines
Deal found 7/15![United Airlines logo]()
$337
This United Airlines deal was found by Cheapflights users on 7/14. 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 9/291:40 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Tue 10/64:07 pm
ONT
- SFO
Nonstop1h 43m
United Airlines
Deal found 7/14![United Airlines logo]()
$339
This United Airlines deal was found by Cheapflights users on 7/13. 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 8/116:30 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Mon 8/246:00 am
ONT
- SFO
Nonstop1h 27m
United Airlines
Deal found 7/13![United Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 7/15. 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 10/89:25 pm
SFO
- ONT
Nonstop1h 34m
United Airlines
Sat 10/101:52 pm
ONT
- SFO
Nonstop1h 29m
United Airlines
Deal found 7/15![United Airlines logo]()
$387
This United Airlines deal was found by Cheapflights users on 7/17. 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 9/196:30 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Mon 9/216:08 am
ONT
- SFO
Nonstop1h 27m
United Airlines
Deal found 7/17![United Airlines logo]()
$399
This United Airlines deal was found by Cheapflights users on 7/17. 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 8/810:40 am
SFO
- ONT
Nonstop1h 32m
United Airlines
Sat 8/84:20 pm
ONT
- SFO
Nonstop1h 30m
United Airlines
Deal found 7/17![United Airlines logo]()
$401
Best first class flights to OntarioDiscover carefully curated first class flight deals to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 17, 2026.
Discover carefully curated first class flight deals to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 17, 2026.
This United Airlines deal was found by Cheapflights users on 7/15. 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 8/136:30 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Mon 8/177:13 pm
ONT
- SFO
Nonstop1h 43m
United Airlines
Deal found 7/15![United Airlines logo]()
$337
This United Airlines deal was found by Cheapflights users on 7/13. 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 9/196:30 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Mon 9/216:08 am
ONT
- SFO
Nonstop1h 27m
United Airlines
Deal found 7/13![United Airlines logo]()
$337
This United Airlines deal was found by Cheapflights users on 7/16. 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 8/296:30 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Mon 8/319:01 am
ONT
- SFO
Nonstop1h 29m
United Airlines
Deal found 7/16![United Airlines logo]()
$337
This United Airlines deal was found by Cheapflights users on 7/16. 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 9/56:30 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Tue 9/81:56 pm
ONT
- SFO
Nonstop1h 29m
United Airlines
Deal found 7/16![United Airlines logo]()
$337
This United Airlines deal was found by Cheapflights users on 7/16. 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 9/56:30 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Mon 9/76:08 am
ONT
- SFO
Nonstop1h 27m
United Airlines
Deal found 7/16![United Airlines logo]()
$337
This United Airlines deal was found by Cheapflights users on 7/13. 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 8/116:30 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Mon 8/246:00 am
ONT
- SFO
Nonstop1h 27m
United Airlines
Deal found 7/13![United Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 7/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/64:10 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Deal found 7/12![United Airlines logo]()
$169
This United Airlines deal was found by Cheapflights users on 7/13. 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 10/249:25 pm
SFO
- ONT
Nonstop1h 34m
United Airlines
Deal found 7/13![United Airlines logo]()
$169
This United Airlines deal was found by Cheapflights users on 7/16. 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 8/69:00 pm
SFO
- ONT
Nonstop1h 37m
United Airlines
Deal found 7/16![United Airlines logo]()
$169
This United Airlines deal was found by Cheapflights users on 7/14. 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 8/276:30 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Deal found 7/14![United Airlines logo]()
$169
This United Airlines deal was found by Cheapflights users on 7/13. 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 8/139:25 pm
SFO
- ONT
Nonstop1h 34m
United Airlines
Deal found 7/13![United Airlines logo]()
$169
This United Airlines deal was found by Cheapflights users on 7/14. 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 10/204:10 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Deal found 7/14![United Airlines logo]()
$169
One-way first class flights to OntarioSearch for one-way first class flight options to Ontario. Find affordable one-way fares based on user searches. Data last updated July 17, 2026.
Search for one-way first class flight options to Ontario. Find affordable one-way fares based on user searches. Data last updated July 17, 2026.
This United Airlines deal was found by Cheapflights users on 7/13. 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 10/64:10 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Deal found 7/13![United Airlines logo]()
$169
This United Airlines deal was found by Cheapflights users on 7/17. 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.
Sun 9/66:30 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Deal found 7/17![United Airlines logo]()
$189
This United Airlines deal was found by Cheapflights users on 7/17. 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 9/14:40 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Deal found 7/17![United Airlines logo]()
$199
This United Airlines deal was found by Cheapflights users on 7/17. 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 8/316:30 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Deal found 7/17![United Airlines logo]()
$209
This United Airlines deal was found by Cheapflights users on 7/16. 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.
Wed 10/77:00 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Deal found 7/16![United Airlines logo]()
$220
This United Airlines deal was found by Cheapflights users on 7/15. 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 1/58:20 am
SFO
- ONT
Nonstop1h 37m
United Airlines
Deal found 7/15![United Airlines logo]()
$235
Quickest first class flights to OntarioExplore quickest first class flight options to Ontario based on user searches, and compare prices and availability for your desired travel dates. Data last updated July 17, 2026.
Explore quickest first class flight options to Ontario based on user searches, and compare prices and availability for your desired travel dates. Data last updated July 17, 2026.
This United Airlines deal was found by Cheapflights users on 7/16. 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 11/210:37 am
SFO
- ONT
Nonstop1h 24m
United Airlines
Wed 11/114:04 pm
ONT
- SFO
Nonstop1h 33m
United Airlines
Deal found 7/16![United Airlines logo]()
$427
This United Airlines deal was found by Cheapflights users on 7/15. 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 8/222:10 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Tue 8/259:01 am
ONT
- SFO
Nonstop1h 29m
United Airlines
Deal found 7/15![United Airlines logo]()
$337
This United Airlines deal was found by Cheapflights users on 7/14. 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 9/291:40 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Tue 10/64:07 pm
ONT
- SFO
Nonstop1h 43m
United Airlines
Deal found 7/14![United Airlines logo]()
$339
This United Airlines deal was found by Cheapflights users on 7/13. 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 8/116:30 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Mon 8/246:00 am
ONT
- SFO
Nonstop1h 27m
United Airlines
Deal found 7/13![United Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 7/17. 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 9/196:30 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Mon 9/216:08 am
ONT
- SFO
Nonstop1h 27m
United Airlines
Deal found 7/17![United Airlines logo]()
$399
This United Airlines deal was found by Cheapflights users on 7/16. 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 8/254:40 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Thu 8/277:13 pm
ONT
- SFO
Nonstop1h 43m
United Airlines
Deal found 7/16![United Airlines logo]()
$408
This United Airlines deal was found by Cheapflights users on 7/13. 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 10/64:10 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Deal found 7/13![United Airlines logo]()
$169
This United Airlines deal was found by Cheapflights users on 7/17. 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.
Sun 9/66:30 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Deal found 7/17![United Airlines logo]()
$189
This United Airlines deal was found by Cheapflights users on 7/17. 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 9/14:40 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Deal found 7/17![United Airlines logo]()
$199
This United Airlines deal was found by Cheapflights users on 7/17. 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 8/316:30 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Deal found 7/17![United Airlines logo]()
$209
This United Airlines deal was found by Cheapflights users on 7/16. 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.
Wed 10/77:00 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Deal found 7/16![United Airlines logo]()
$220
This United Airlines deal was found by Cheapflights users on 7/14. 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.
Sun 10/47:00 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Deal found 7/14![United Airlines logo]()
$265
Travel insights for first class flights from San Francisco to Ontario
Get recent, data-driven insights about first class flights from San Francisco to Ontario including ideal travel times, pricing trends, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Complete your trip
Flights by cabin class
More first class flights
Nearby airports
Popular routes
Complete your trip
Complement your first class flight to Ontario by adding a car rental and/or hotel room to your itinerary.
Search flights to Ontario by cabin class
Expand your first class flight ticket search
Look further for the perfect first class travel experience if you are not set on Ontario
First class flights to New Yorkfrom $223/person
First class flights to Las Vegasfrom $253/person
First class flights to Los Angelesfrom $207/person
First class flights to Seattlefrom $188/person
First class flights to San Diegofrom $134/person
First class flights to Honolulufrom $249/person
First class flights to Austinfrom $407/person