Petersburg (PSG) to Ontario (ONT) economy award flights
In economy from Petersburg (PSG) to Ontario (ONT), no seat was read in the last 3 days; at the last read the best value was 17,500 Atmos points plus $6 on Alaska Airlines through Atmos Rewards (checked 30 Oct 2026).
Atmos RewardsAirline
Alaska AirlinesDepartingTue, Dec 8Which program and airline costs you least
Petersburg to Ontario in economy: is 17.5K Atmos points + $5.60 — Alaska Airlines through Atmos Rewards.
| Airline | |
|---|---|
| Alaska AirlinesBest valuevia SEAlast seen 30 Oct, not re-checked sinceAtmos Rewards | 17.5K Atmos pointsplus $5.60 |
Where the space is over the next 60 days
Dashed days are prices last seen more than 3 days ago and not re-checked since.
PSG to ONT in economy: the facts
Over the next 60 days we hold economy seats from Petersburg to Ontario on 57 of the 57 departure days we have checked so far (3 days are not checked yet), through 1 program. These figures are counted from the seats stored for those dates, not from a price history; the typical day is the median of each day's cheapest seat. Data updated .
- Atmos Rewards
- Days with space
- 57 of 57 checked
- Lowest
- 17,500 Atmos points
- Typical day
- 22,500 Atmos points
- Cash on top
- $6 to $26
Nonstop or with a connection
No nonstop seats in the window. With a connection on Alaska Airlines.
How to book it
- Atmos Rewards books on alaskaair.com: sign in there, search PSG to ONT in economy on a date with space, and pay in Atmos points with the cash on top (from $6).
MilesZone finds the seat; it does not book it or take payment.
More routes
Get told when a PSG → ONT seat is cheap.
We re-check that exact seat seconds before the email leaves, so what you open is still there.
Email only. Alerts and search are Pro.