--- title: "Ontario to San Francisco flights: who flies ONT-SFO" description: "United Airlines and Frontier Airlines fly nonstop from ONT to SFO, about 51 flights a week, covering 364 miles. See the full timetable and who flies it on 2LNR." canonical: "https://2lnr.com/routes/ont-sfo" url: "https://2lnr.com/routes/ont-sfo.md" date_modified: "2026-10-18T05:10:47Z" --- # Ontario to San Francisco (ONT-SFO): nonstop flights and who flies them United Airlines and Frontier Airlines fly nonstop between Ontario (ONT) and San Francisco (SFO), roughly 51 times a week. The timetable below shows the nonstop scheduled at 1h 27m to 1h 47m for the 364 miles. Schedule last confirmed October 18, 2026. Departure times come from 2LNR's schedule data; confirm with the airline before you book. Updated October 23, 2026. See ONT to SFO on the interactive map [Get started free](https://2lnr.com/login) 51 Flights a week, 4-week average 1h 27m to 1h 47m Scheduled flight time 364 mi Nonstop distance Free To get started ## Ontario to San Francisco flight schedule Scheduled nonstop departures for ONT to SFO starting October 23, 2026, last checked against our schedule feed on October 18, 2026. Airlines retime and cancel flights, so confirm with the airline before you book. Scheduled nonstop departures from Ontario (ONT) to San Francisco (SFO) | Date | Flight | Airline | Departs ONT | Arrives SFO | Duration | Aircraft | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | Fri, Oct 23 | UA 2363 | United Airlines | 06:08 | 07:35 | 1h 27m | [Boeing 737-800](https://2lnr.com/seatmaps/ua/737-800.md) | | Fri, Oct 23 | UA 1387 | United Airlines | 09:25 | 10:54 | 1h 29m | [Airbus A319](https://2lnr.com/seatmaps/ua/a319.md) | | Fri, Oct 23 | F9 1159 | Frontier Airlines | 12:01 | 13:32 | 1h 31m | [Airbus A320neo](https://2lnr.com/seatmaps/f9/a320neo.md) | | Fri, Oct 23 | UA 1375 | United Airlines | 13:52 | 15:21 | 1h 29m | [Boeing 737 MAX 9](https://2lnr.com/seatmaps/ua/737-max-9.md) | | Fri, Oct 23 | UA 5483 | United Airlines | 16:03 | 17:50 | 1h 47m | [Embraer E175](https://2lnr.com/seatmaps/ua/e175.md) | | Fri, Oct 23 | UA 5396 | United Airlines | 18:32 | 20:19 | 1h 47m | Embraer E175 | | Sat, Oct 24 | UA 1387 | United Airlines | 08:03 | 09:30 | 1h 27m | Boeing 737-800 | | Sat, Oct 24 | UA 5330 | United Airlines | 11:10 | 12:43 | 1h 33m | Embraer E175 | | Sat, Oct 24 | UA 1375 | United Airlines | 13:52 | 15:21 | 1h 29m | Boeing 737 MAX 9 | | Sat, Oct 24 | UA 5483 | United Airlines | 16:03 | 17:50 | 1h 47m | Embraer E175 | | Sun, Oct 25 | UA 2363 | United Airlines | 06:08 | 07:35 | 1h 27m | Boeing 737-800 | | Sun, Oct 25 | UA 432 | United Airlines | 09:25 | 10:55 | 1h 30m | Airbus A319 | | Sun, Oct 25 | F9 1159 | Frontier Airlines | 12:01 | 13:32 | 1h 31m | Airbus A320neo | | Sun, Oct 25 | UA 1375 | United Airlines | 13:35 | 15:05 | 1h 30m | Boeing 737 MAX 9 | | Sun, Oct 25 | F9 2677 | Frontier Airlines | 14:26 | 15:56 | 1h 30m | [Airbus A321](https://2lnr.com/seatmaps/f9/a321.md) | | Sun, Oct 25 | UA 5577 | United Airlines | 16:04 | 17:37 | 1h 33m | Embraer E175 | | Sun, Oct 25 | UA 4699 | United Airlines | 18:36 | 20:09 | 1h 33m | Embraer E175 | | Sun, Oct 25 | UA 1665 | United Airlines | 19:13 | 20:56 | 1h 43m | Boeing 737-800 | | Mon, Oct 26 | UA 2363 | United Airlines | 06:08 | 07:35 | 1h 27m | Boeing 737-800 | | Mon, Oct 26 | UA 432 | United Airlines | 09:00 | 10:30 | 1h 30m | [Airbus A320](https://2lnr.com/seatmaps/ua/a320.md) | | Mon, Oct 26 | F9 1159 | Frontier Airlines | 12:01 | 13:32 | 1h 31m | Airbus A320neo | | Mon, Oct 26 | UA 1375 | United Airlines | 13:35 | 15:05 | 1h 30m | Boeing 737 MAX 9 | | Mon, Oct 26 | UA 5577 | United Airlines | 16:04 | 17:37 | 1h 33m | Embraer E175 | | Mon, Oct 26 | UA 4699 | United Airlines | 18:36 | 20:09 | 1h 33m | Embraer E175 | | Mon, Oct 26 | UA 1665 | United Airlines | 19:13 | 20:56 | 1h 43m | Boeing 737-800 | | Tue, Oct 27 | UA 2363 | United Airlines | 06:08 | 07:35 | 1h 27m | Boeing 737-800 | | Tue, Oct 27 | UA 432 | United Airlines | 09:25 | 10:55 | 1h 30m | Boeing 737-800 | | Tue, Oct 27 | UA 1375 | United Airlines | 13:35 | 15:05 | 1h 30m | Boeing 737 MAX 9 | | Tue, Oct 27 | UA 5577 | United Airlines | 16:17 | 17:50 | 1h 33m | Embraer E175 | | Tue, Oct 27 | UA 4699 | United Airlines | 18:36 | 20:09 | 1h 33m | Embraer E175 | | Tue, Oct 27 | UA 1665 | United Airlines | 18:53 | 20:22 | 1h 29m | [Boeing 737 MAX 8](https://2lnr.com/seatmaps/ua/737-max-8.md) | | Wed, Oct 28 | UA 2363 | United Airlines | 06:08 | 07:35 | 1h 27m | Boeing 737-800 | | Wed, Oct 28 | UA 432 | United Airlines | 09:25 | 10:55 | 1h 30m | Boeing 737-800 | | Wed, Oct 28 | UA 1375 | United Airlines | 13:35 | 15:05 | 1h 30m | Boeing 737 MAX 9 | | Wed, Oct 28 | UA 5577 | United Airlines | 16:17 | 17:50 | 1h 33m | Embraer E175 | | Wed, Oct 28 | UA 4699 | United Airlines | 18:36 | 20:09 | 1h 33m | Embraer E175 | | Wed, Oct 28 | UA 1665 | United Airlines | 18:53 | 20:22 | 1h 29m | Boeing 737 MAX 8 | | Thu, Oct 29 | UA 2363 | United Airlines | 06:08 | 07:35 | 1h 27m | Boeing 737-800 | | Thu, Oct 29 | UA 432 | United Airlines | 09:25 | 10:55 | 1h 30m | Boeing 737-800 | | Thu, Oct 29 | F9 1159 | Frontier Airlines | 11:38 | 13:12 | 1h 34m | Airbus A320neo | Showing the first 40 of 45 scheduled ONT to SFO departures across 7 days with service, starting October 23, 2026. Every remaining date is on the interactive map. Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure. See every ONT to SFO date on the interactive map ## Aircraft on the Ontario to San Francisco nonstop In the schedule table on this page, United Airlines flies the [Boeing 737-800](https://2lnr.com/seatmaps/ua/737-800.md), the [Embraer E175](https://2lnr.com/seatmaps/ua/e175.md), the [Boeing 737 MAX 9](https://2lnr.com/seatmaps/ua/737-max-9.md), the [Airbus A319](https://2lnr.com/seatmaps/ua/a319.md), the [Boeing 737 MAX 8](https://2lnr.com/seatmaps/ua/737-max-8.md), and the [Airbus A320](https://2lnr.com/seatmaps/ua/a320.md), and Frontier Airlines flies the [Airbus A320neo](https://2lnr.com/seatmaps/f9/a320neo.md) and the [Airbus A321](https://2lnr.com/seatmaps/f9/a321.md). Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure. ## The full ONT to SFO nonstop schedule This page carries the full ONT to SFO nonstop schedule, who operates each departure and how often it runs; the reverse direction is linked below. ### See the schedule Who operates each ONT to SFO nonstop and how often it runs, from 2LNR's schedule data. ### Plan on the map See ONT to SFO on the interactive route map, with schedules, connections, and route statistics. ## Airlines flying Ontario to San Francisco nonstop Carriers operating ONT to SFO nonstop in the current schedule. - [United Airlines (UA) route map](https://2lnr.com/routes/airlines/ua.md)\ [The aircraft UA flies](https://2lnr.com/seatmaps/ua.md) - [Frontier Airlines (F9) route map](https://2lnr.com/routes/airlines/f9.md)\ [The aircraft F9 flies](https://2lnr.com/seatmaps/f9.md) See ONT to SFO on the interactive map → ## Frequently asked questions about ONT to SFO **How long is the flight from Ontario (ONT) to San Francisco (SFO)?** Scheduled flight times from Ontario (ONT) to San Francisco (SFO) run from 1h 27m to 1h 47m across the departures in the schedule table on this page. The nonstop covers about 364 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book. **Which airlines fly nonstop from ONT to SFO?** United Airlines and Frontier Airlines fly ONT to SFO nonstop. 2LNR doesn't show award or upgrade space for any of them on ONT to SFO, so this page carries the schedule rather than a space claim. **How many flights a week are there from ONT to SFO?** About 51 nonstop flights a week run between Ontario (ONT) and San Francisco (SFO) in the current schedule, operated by United Airlines and Frontier Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next. **What time do flights from ONT to SFO depart?** Scheduled ONT to SFO nonstops in the next 7 days with service leave between 06:08 and 19:13, local time at Ontario. The schedule table on this page lists every departure by date, with its arrival time and aircraft. **Which flights operate ONT to SFO nonstop?** The schedule table on this page lists 12 flight numbers for ONT to SFO nonstops, including UA 432, UA 1375, UA 1387, UA 1665, UA 2363, UA 4699, and UA 5577 on United Airlines, and F9 1159 on Frontier Airlines. The table lists each departure by date with its times and aircraft. **Does 2LNR show upgrade or award space on ONT to SFO?** Not on this route: 2LNR doesn't show award or upgrade space for any airline flying ONT to SFO. The page carries the full ONT to SFO nonstop schedule and who flies each departure, and the reverse direction is linked below. Flying the other way? See [SFO to ONT nonstop flights](https://2lnr.com/routes/sfo-ont.md). Award seats rather than schedules? See [award availability by airline](https://2lnr.com/awards.md). Looking beyond this route? See [every route from Ontario (ONT)](https://2lnr.com/routes/ont.md), or [every route from San Francisco (SFO)](https://2lnr.com/routes/sfo.md). Nonstops to San Francisco (SFO) from other airports within 150 miles of Ontario (ONT): - [Santa Ana (SNA) to San Francisco (SFO)](https://2lnr.com/routes/sna-sfo.md), 30 miles from ONT - [Burbank (BUR) to San Francisco (SFO)](https://2lnr.com/routes/bur-sfo.md), 45 miles from ONT - [Los Angeles (LAX) to San Francisco (SFO)](https://2lnr.com/routes/lax-sfo.md), 48 miles from ONT - [Palm Springs (PSP) to San Francisco (SFO)](https://2lnr.com/routes/psp-sfo.md), 64 miles from ONT - [Carlsbad (CLD) to San Francisco (SFO)](https://2lnr.com/routes/cld-sfo.md), 67 miles from ONT Nonstops from Ontario (ONT) to other airports within 150 miles of San Francisco (SFO): - [Ontario (ONT) to Oakland (OAK)](https://2lnr.com/routes/ont-oak.md), 11 miles from SFO - [Ontario (ONT) to Santa Rosa (STS)](https://2lnr.com/routes/ont-sts.md), 65 miles from SFO - [Ontario (ONT) to Sacramento (SMF)](https://2lnr.com/routes/ont-smf.md), 85 miles from SFO Distances are great-circle between the airports, not driving distance. - [How to plan an upgrade by route](https://2lnr.com/guides/upgrade-strategy.md) ## See the full ONT to SFO nonstop schedule Every scheduled departure on this route, with who flies it. 2LNR shows upgrade and award space by date on the carriers it tracks, the next 14 days free on every product and the full horizon on Pro. [Get started free](https://2lnr.com/login)