Sorry for one more move, and I will PM the OP - but as this is about earning Alaska Airlines Miles Plan miles whilst flying LAN, it needs to exist in the Alaska Airlines | Mileage Plan Forum, so I will move it there.
JDiver
senior moderator
The Mileage Plan earnings scheme says:
Earning on LAN
Economy Class Cabin: Earn actual flight miles* flown in Y, B, H, K, M, L, V, S, or N** classes of service.
Premium Economy Class Cabin: Earn actual flight miles* flown in W class of service.
Premium Business Class Cabin: Earn actual flight miles* flown in J, D, or I classes of service, plus 25% Bonus Miles.
First Class Cabin: Earn actual flight miles* flown in F class of service, plus 50% Bonus Miles. Earn actual flight miles* flown in R class of service, plus 100% Bonus Miles.
Elite Qualifying Flight Miles: Yes
*Earn 500 minimum miles on flights less than 500 miles. Actual miles flown = 1 mile per flight mile flown. Miles may not be earned on Q or G class of service on flights within Ecuador, and M, L, V, Q or S classes of service on flights within Peru. **Miles may not be earned on M, L, V, S, N, O, Q or G classes of service on flights within Argentina, and N, O, Q or G classes of service on flights within Chile. Some deeply discounted, and industry fares are ineligible to earn miles.
LAN
Eligible Flight Numbers
1 - 1343
1400 - 1943
2000 - 2943
4000 - 4943
To ensure flight credit, the two letter airline code (LA) must precede the flight number (for example, LA XXXX) on your ticket receipt or boarding pass.
So, your flight number needs to fall withing the eligible flight numbers. The rubric states Q is not a miles-earning fare bucket within Argentina and Chile; it does not say it is ineligible for miles-earning transpacific or international. OTOH, Q is
not one of the fares shown as earning in Economy at any time, so that probably means it is ineligible.
You should, IMO, call Alaska to determine if you will earn miles.