--- title: "Oakland (OAK) to Ontario (ONT) flights: who flies it" description: "Frontier Airlines flies nonstop from OAK to ONT, about 5 flights a week as F9 4222, scheduled at 1h 17m to 1h 20m. See the full timetable and who flies it on 2LNR." canonical: "https://2lnr.com/routes/oak-ont" url: "https://2lnr.com/routes/oak-ont.md" date_modified: "2026-10-18T05:10:47Z" --- # Oakland to Ontario (OAK-ONT): nonstop flights and who flies them Frontier Airlines flies the OAK to ONT nonstop about 5 times a week. In the timetable below it flies as F9 4222, scheduled at 1h 17m to 1h 20m for the 362 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 OAK to ONT on the interactive map [Get started free](https://2lnr.com/login) 5 Flights a week, 4-week average 1h 17m to 1h 20m Scheduled flight time 362 mi Nonstop distance Free To get started ## Oakland to Ontario flight schedule Scheduled nonstop departures for OAK to ONT 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 Oakland (OAK) to Ontario (ONT) | Date | Flight | Airline | Departs OAK | Arrives ONT | Duration | Aircraft | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | Sat, Nov 21 | F9 4222 | Frontier Airlines | 19:13 | 20:33 | 1h 20m | [Airbus A321neo family](https://2lnr.com/seatmaps/f9/a321neo.md) | | Sun, Nov 22 | F9 4222 | Frontier Airlines | 20:35 | 21:52 | 1h 17m | [Airbus A320neo](https://2lnr.com/seatmaps/f9/a320neo.md) | | Tue, Nov 24 | F9 4222 | Frontier Airlines | 19:13 | 20:33 | 1h 20m | [Airbus A320](https://2lnr.com/seatmaps/f9/a320.md) | | Thu, Nov 26 | F9 4222 | Frontier Airlines | 20:35 | 21:52 | 1h 17m | Airbus A320 | | Sat, Nov 28 | F9 4222 | Frontier Airlines | 20:42 | 21:59 | 1h 17m | Airbus A320neo | | Sun, Nov 29 | F9 4222 | Frontier Airlines | 20:35 | 21:52 | 1h 17m | Airbus A320 | Showing all 6 scheduled OAK to ONT departures across 6 days with service, starting October 23, 2026. Later dates are 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 OAK to ONT date on the interactive map ## Aircraft on the Oakland to Ontario nonstop Frontier Airlines flies the departures in the schedule table on this page with the [Airbus A320](https://2lnr.com/seatmaps/f9/a320.md), the [Airbus A320neo](https://2lnr.com/seatmaps/f9/a320neo.md), and the [Airbus A321neo family](https://2lnr.com/seatmaps/f9/a321neo.md). Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure. ## The full OAK to ONT nonstop schedule This page carries the full OAK to ONT nonstop schedule, who operates each departure and how often it runs; the reverse direction is linked below. ### See the schedule Who operates each OAK to ONT nonstop and how often it runs, from 2LNR's schedule data. ### Plan on the map See OAK to ONT on the interactive route map, with schedules, connections, and route statistics. ## Airlines flying Oakland to Ontario nonstop Carriers operating OAK to ONT nonstop in the current schedule. - [Frontier Airlines (F9) route map](https://2lnr.com/routes/airlines/f9.md)\ [The aircraft F9 flies](https://2lnr.com/seatmaps/f9.md) See OAK to ONT on the interactive map → ## Frequently asked questions about OAK to ONT **How long is the flight from Oakland (OAK) to Ontario (ONT)?** Scheduled flight times from Oakland (OAK) to Ontario (ONT) run from 1h 17m to 1h 20m across the departures in the schedule table on this page. The nonstop covers about 362 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book. **Which airlines fly nonstop from OAK to ONT?** Frontier Airlines is currently the only airline flying OAK to ONT nonstop. 2LNR doesn't show award or upgrade space for it on OAK to ONT, so this page carries the schedule rather than a space claim. **How many flights a week are there from OAK to ONT?** About 5 nonstop flights a week run between Oakland (OAK) and Ontario (ONT) in the current schedule, operated by Frontier Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next. **What time do flights from OAK to ONT depart?** Scheduled OAK to ONT nonstops in the next 6 days with service leave between 19:13 and 20:42, local time at Oakland. The schedule table on this page lists every departure by date, with its arrival time and aircraft. **Which flights operate OAK to ONT nonstop?** Frontier Airlines flies F9 4222 nonstop from Oakland (OAK) to Ontario (ONT), the only flight number in the schedule table on this page. The table lists each date with its departure and arrival times and aircraft. **Does 2LNR show upgrade or award space on OAK to ONT?** Not on this route: 2LNR doesn't show award or upgrade space for Frontier Airlines on OAK to ONT. The page carries the full OAK to ONT nonstop schedule and who flies each departure, and the reverse direction is linked below. Flying the other way? See [ONT to OAK nonstop flights](https://2lnr.com/routes/ont-oak.md). Award seats rather than schedules? See [award availability by airline](https://2lnr.com/awards.md). Looking beyond this route? See [every route from Oakland (OAK)](https://2lnr.com/routes/oak.md), or [every route from Ontario (ONT)](https://2lnr.com/routes/ont.md). Nonstops to Ontario (ONT) from other airports within 150 miles of Oakland (OAK): - [San Francisco (SFO) to Ontario (ONT)](https://2lnr.com/routes/sfo-ont.md), 11 miles from OAK - [Santa Rosa (STS) to Ontario (ONT)](https://2lnr.com/routes/sts-ont.md), 63 miles from OAK - [Sacramento (SMF) to Ontario (ONT)](https://2lnr.com/routes/smf-ont.md), 75 miles from OAK Nonstops from Oakland (OAK) to other airports within 150 miles of Ontario (ONT): - [Oakland (OAK) to Burbank (BUR)](https://2lnr.com/routes/oak-bur.md), 45 miles from ONT - [Oakland (OAK) to Santa Monica (SMO)](https://2lnr.com/routes/oak-smo.md), 49 miles from ONT - [Oakland (OAK) to Carlsbad (CLD)](https://2lnr.com/routes/oak-cld.md), 67 miles from ONT - [Oakland (OAK) to San Diego (SAN)](https://2lnr.com/routes/oak-san.md), 94 miles from ONT 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 OAK to ONT 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. 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