American · ONT
What gates does American use at Ontario Airport (ONT)?
American uses gates 408, 409, 410 and 411 at Ontario Airport (ONT), mainly in Terminal 4, with about 9 departures a day (Oct 3–5, 2026). It is the main airline at all 4.
Based on 296 American flights at ONT, Oct 3–5, 2026 (full days)
How American compares at ONT
- 4th of the 10 airlines with regular flights at ONT by departures: 11% of them (9 departures a day of about 79 a day).
- 13% of the seats leaving ONT: about 1,572 a day, 175 per departure.
- 1.9 turns a day at each gate it turns planes at, 35% fewer than the airport’s 2.9.
- Median turn at the gate: 58 min, 4 min longer than the airport median (54 min).
- At ONT, American’s 9 departures a day compare with Delta’s 9 and Alaska’s 9-10. American has 4 gates of its own; Delta 3; Alaska 2.
Where American flies nonstop from ONT
3 nonstop destinations. Nonstop routes seen Oct 3–5, 2026; a few days of data can miss weekly or seasonal routes.
| Destination | Flights | Other airlines on this route |
|---|---|---|
| Dallas/Fort WorthDFW | 5-6/day | Frontier (1/day) |
| PhoenixPHX | 3-4/day | Southwest (4-5/day) |
| CharlotteCLT | 2-3/week | none seen |
When American flies at ONT
- First departure of the day usually around 6:00 am, the last around 11:00 pm.
- Busiest hour: 12:00 pm–1:00 pm, with about 2 of its arrivals and departures.
- About 3 of its aircraft spend the night at ONT (arrive in the evening, leave the next morning).
American’s aircraft at ONT
| Aircraft | Departures | Seats each |
|---|---|---|
| A321 | 3-4/day | 190 |
| 737-800 | 3-4/day | 172 |
| A320 | 4-5/week | 150 |
| 737 MAX 8 | 4-5/week | 172 |
| E170 | 2-3/week | 65 |
| A321neo | 2-3/week | 196 |
About 1,572 seats leave ONT on American each day. Of the gates it holds, 4 have taken a narrow-body. Seats are capacity from each airline’s seat map per aircraft type, not passengers.
American’s gates at ONT
Terminal 4 408, 409, 410, 411
Held = the airline flying the gate most (regional partners count as their brand).
About this data
Based on 3 full days of flights at ONT, Oct 3–5, 2026. Gates of its own are the gates where American flies the most (regional partners count as their brand). Every one of its departures has a seat count.
American at ONT: questions
What terminal is American at Ontario Airport (ONT)?
American flies from Terminal 4 at Ontario Airport (ONT).
What gates does American use at ONT?
American has 4 gates at ONT (the airline flying each one most): 408, 409, 410 and 411. It used 4 gates in all over Oct 3–5, 2026.
How many flights a day does American have from ONT?
About 9 departures a day and 1,572 seats, averaged over Oct 3–5, 2026.
Where does American fly nonstop from ONT?
American flies nonstop to 3 cities from ONT, the most often to Dallas/Fort Worth, Phoenix and Charlotte. Routes seen Oct 3–5, 2026.
When is American’s first flight out of ONT?
Usually around 6:00 am; the last leaves around 11:00 pm.
Other airlines at ONT
All of ONT’s gates by airline · American at every airport we map · Nonstop routes from ONT