Cheap First Class Flights from Ontario to San Francisco
ONT — SFO
Aug 18 — Aug 251
Round-trip
1 adult, First
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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 Ontario to San Francisco
Find the latest flights to San Francisco 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 19, 2026.
Top Rated Airline | American Airlines |
|---|---|
No. of Airlines | 5 |
Arrival Airport | San Francisco Airport |
Find First Class flight deals from Ontario to San Francisco
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Cheapest first class flights to San FranciscoExplore the most affordable first class flight options available to San Francisco. Find the lowest fares based on data from user searches, with prices last updated on July 19, 2026.
Explore the most affordable first class flight options available to San Francisco. Find the lowest fares based on data from user searches, with prices last updated on July 19, 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.
Wed 8/121:56 pm
ONT
- SFO
Nonstop1h 29m
United Airlines
Wed 8/126:30 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Deal found 7/15![United Airlines logo]()
$332
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 8/86:00 am
ONT
- SFO
Nonstop1h 25m
United Airlines
Sat 8/84:55 pm
SFO
- ONT
Nonstop1h 38m
United Airlines
Deal found 7/15![United Airlines logo]()
$337
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 9/86:08 am
ONT
- SFO
Nonstop1h 27m
United Airlines
Wed 9/1610:37 am
SFO
- ONT
Nonstop1h 35m
United Airlines
Deal found 7/15![United Airlines logo]()
$339
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 12/11:33 pm
ONT
- SFO
Nonstop1h 29m
United Airlines
Thu 12/310:50 am
SFO
- ONT
Nonstop1h 30m
United Airlines
Deal found 7/16![United Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 7/19. 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 8/2911:00 am
ONT
- SFO
Nonstop1h 29m
United Airlines
Sat 9/56:30 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Deal found 7/19![United Airlines logo]()
$387
This United Airlines deal was found by Cheapflights users on 7/19. 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 9/31:56 pm
ONT
- SFO
Nonstop1h 29m
United Airlines
Sun 9/66:30 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Deal found 7/19![United Airlines logo]()
$389
Best first class flights to San FranciscoDiscover carefully curated first class flight deals to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 19, 2026.
Discover carefully curated first class flight deals to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 19, 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.
Wed 8/121:56 pm
ONT
- SFO
Nonstop1h 29m
United Airlines
Wed 8/126:30 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Deal found 7/15![United Airlines logo]()
$332
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.
Sat 10/108:03 am
ONT
- SFO
Nonstop1h 27m
United Airlines
Mon 10/129:25 pm
SFO
- ONT
Nonstop1h 34m
United Airlines
Deal found 7/14![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.
Mon 8/101:50 pm
ONT
- SFO
Nonstop1h 24m
United Airlines
Tue 8/1110:37 am
SFO
- ONT
Nonstop1h 35m
United Airlines
Deal found 7/16![United Airlines logo]()
$337
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 9/86:08 am
ONT
- SFO
Nonstop1h 27m
United Airlines
Wed 9/1610:37 am
SFO
- ONT
Nonstop1h 35m
United Airlines
Deal found 7/15![United Airlines logo]()
$339
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 12/11:33 pm
ONT
- SFO
Nonstop1h 29m
United Airlines
Thu 12/310:50 am
SFO
- ONT
Nonstop1h 30m
United Airlines
Deal found 7/16![United Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 7/18. 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 9/31:56 pm
ONT
- SFO
Nonstop1h 29m
United Airlines
Sun 9/66:30 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Deal found 7/18![United Airlines logo]()
$389
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 8/2911:00 am
ONT
- SFO
Nonstop1h 29m
United Airlines
Deal found 7/16![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.
Wed 11/46:00 am
ONT
- SFO
Nonstop1h 30m
United Airlines
Deal found 7/16![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.
Tue 9/221:56 pm
ONT
- SFO
Nonstop1h 29m
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.
Sat 11/71:52 pm
ONT
- SFO
Nonstop1h 30m
United Airlines
Deal found 7/14![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 8/279:01 am
ONT
- SFO
Nonstop1h 29m
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.
Sat 10/31:52 pm
ONT
- SFO
Nonstop1h 29m
United Airlines
Deal found 7/14![United Airlines logo]()
$169
One-way first class flights to San FranciscoSearch for one-way first class flight options to San Francisco. Find affordable one-way fares based on user searches. Data last updated July 19, 2026.
Search for one-way first class flight options to San Francisco. Find affordable one-way fares based on user searches. Data last updated July 19, 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 8/66:00 am
ONT
- SFO
Nonstop1h 25m
United Airlines
Deal found 7/15![United Airlines logo]()
$169
This United Airlines deal was found by Cheapflights users on 7/18. 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 10/68:03 am
ONT
- SFO
Nonstop1h 27m
United Airlines
Deal found 7/18![United Airlines logo]()
$199
This United Airlines deal was found by Cheapflights users on 7/19. 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 am
ONT
- SFO
Nonstop1h 29m
United Airlines
Deal found 7/19![United Airlines logo]()
$201
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 1/56:53 pm
ONT
- SFO
Nonstop1h 29m
United Airlines
Deal found 7/15![United Airlines logo]()
$235
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.
Sun 8/166:08 am
ONT
- SFO
Nonstop1h 27m
United Airlines
Deal found 7/16![United Airlines logo]()
$265
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 8/36:00 am
ONT
- SFO
Nonstop1h 25m
United Airlines
Deal found 7/16![United Airlines logo]()
$305
Quickest first class flights to San FranciscoExplore quickest first class flight options to San Francisco based on user searches, and compare prices and availability for your desired travel dates. Data last updated July 19, 2026.
Explore quickest first class flight options to San Francisco based on user searches, and compare prices and availability for your desired travel dates. Data last updated July 19, 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 8/86:00 am
ONT
- SFO
Nonstop1h 25m
United Airlines
Sat 8/84:55 pm
SFO
- ONT
Nonstop1h 38m
United Airlines
Deal found 7/15![United Airlines logo]()
$337
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 9/86:08 am
ONT
- SFO
Nonstop1h 27m
United Airlines
Wed 9/1610:37 am
SFO
- ONT
Nonstop1h 35m
United Airlines
Deal found 7/15![United Airlines logo]()
$339
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 8/116:08 am
ONT
- SFO
Nonstop1h 27m
United Airlines
Thu 8/139:25 pm
SFO
- ONT
Nonstop1h 34m
United Airlines
Deal found 7/17![United Airlines logo]()
$407
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.
Wed 8/121:56 pm
ONT
- SFO
Nonstop1h 29m
United Airlines
Wed 8/126:30 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Deal found 7/15![United Airlines logo]()
$332
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 12/11:33 pm
ONT
- SFO
Nonstop1h 29m
United Airlines
Thu 12/310:50 am
SFO
- ONT
Nonstop1h 30m
United Airlines
Deal found 7/16![United Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 7/19. 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 8/2911:00 am
ONT
- SFO
Nonstop1h 29m
United Airlines
Sat 9/56:30 pm
SFO
- ONT
Nonstop1h 31m
United Airlines
Deal found 7/19![United Airlines logo]()
$387
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 8/66:00 am
ONT
- SFO
Nonstop1h 25m
United Airlines
Deal found 7/15![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.
Mon 8/36:00 am
ONT
- SFO
Nonstop1h 25m
United Airlines
Deal found 7/16![United Airlines logo]()
$305
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.
Fri 7/241:50 pm
ONT
- SFO
Nonstop1h 25m
United Airlines
Deal found 7/15![United Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 7/18. 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 10/68:03 am
ONT
- SFO
Nonstop1h 27m
United Airlines
Deal found 7/18![United Airlines logo]()
$199
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.
Sun 8/166:08 am
ONT
- SFO
Nonstop1h 27m
United Airlines
Deal found 7/16![United Airlines logo]()
$265
This United Airlines deal was found by Cheapflights users on 7/19. 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 am
ONT
- SFO
Nonstop1h 29m
United Airlines
Deal found 7/19![United Airlines logo]()
$201
Travel insights for first class flights from Ontario to San Francisco
Get recent, data-driven insights about first class flights from Ontario to San Francisco including ideal travel times, pricing trends, and more.
Browse thousands of different options on Cheapflights for your next trip
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