docs(trip): choose UA1333 / AC573 for MS & LK flights

9:47 AM out Sep 20 (lands SFO 12:11 PM), 7:30 PM back Oct 4. Book
via United, ~CA$1,470 all-in for 2 with one checked bag. Sep 20
becomes an afternoon-start SF day.

bookings/flights-ms.md

@@ -3,17 +3,16 @@
 LK flies with MS on both legs (YVR ↔ SFO). She leaves the group Sep 22
 and rejoins Sep 27 around 5 PM in LA.
 
+**Chosen — to book** (selected Aug 31, 2026; not purchased yet):
+
 ## Vancouver → San Francisco
 
 | | |
 |---|---|
 | **Route** | Vancouver (YVR) → San Francisco (SFO) |
 | **Date** | Sep 20, 2026 |
-| **Airline** | TBC |
-| **Flight** | TBC |
-| **Arrival time** | TBC — needed before finalizing the Sep 20 SF plan and rental pickup |
-
----
+| **Flight** | **UA1333** (United-operated, AC codeshare) |
+| **Times** | Depart 9:47 AM → arrive SFO **12:11 PM** |
 
 ## San Francisco → Vancouver
 
@@ -21,10 +20,15 @@ and rejoins Sep 27 around 5 PM in LA.
 |---|---|
 | **Route** | San Francisco (SFO) → Vancouver (YVR) |
 | **Date** | Oct 4, 2026 |
-| **Airline** | TBC |
-| **Flight** | TBC |
-| **Departure time** | TBC — coordinate with the SFO rental-car return |
+| **Flight** | **AC573** (Air Canada-operated, UA codeshare) |
+| **Times** | Depart 7:30 PM → arrive YVR 9:50 PM |
 
-**Tickets needed:** Round trip, YVR ↔ SFO, Sep 20–Oct 4, for MS and LK.
+**Booking:** through **United** (Economy, not Basic) — CA$1,370 for 2 + CA$100 one checked
+bag (fee covers the whole trip) ≈ **CA$1,470 all-in**. Free seat selection and changes,
+no refunds (refundable fare +CA$100/person). Prices checked Aug 31 — re-verify at checkout,
+and set passenger count to 2.
+
+**Consequence for Sep 20:** SFO arrival 12:11 PM → rental pickup ~1 PM; the Golden Gate /
+waterfront day starts mid-afternoon — trim the [Sep 20 plan](../itinerary.md) accordingly.
 
 **Not included:** No LA → Las Vegas flight is needed; that leg will be driven in the rental car.

itinerary.md

@@ -28,7 +28,7 @@
 | [🎰 Las Vegas stay — candidates](vegas_stay_options.md) | Sep 30–Oct 3 (3 nights) | US$500–1,392+ | Shortlist only; resort fees may be extra |
 | [🚗 Car Rental](bookings/car-rental.md) | Sep 20–Oct 4 (14 days) | ⚠️ TBC | SFO round trip; rent and return by MS |
 | [✈️ Flights — KT & VT](bookings/flights-kt-vt.md) | Sep 19 / Oct 3 | — | ✅ Dates confirmed (details later) |
-| [✈️ Flights — MS & LK](bookings/flights-ms.md) | Sep 20 / Oct 4 | — | Round trip YVR ↔ SFO needed · LK away from group Sep 22–27 |
+| [✈️ Flights — MS & LK](bookings/flights-ms.md) | Sep 20 / Oct 4 | ~CA$1,470 | Chosen: UA1333 / AC573 — **to book via United** · LK away from group Sep 22–27 |
 
 **Expense split:** [`expenses.md`](expenses.md) · [Tricount](https://tricount.com/tOMVasoAGxPeQkMAJP) (opens in the app).
 
@@ -39,7 +39,7 @@
 | Date | Day | Location | Notes |
 |------|-----|----------|-------|
 | Sep 19 | Sat | Daly City (SF area) | ✅ Airbnb check-in after 3 PM · KT & VT land SFO 1 PM · public transit / taxi · confirm they can check in without MS |
-| Sep 20 | Sun | San Francisco | MS flies YVR → SFO and picks up rental car (arrival time TBC) · KT & VT use public transit / taxi until then · [See plan ↓](#sep-20--san-francisco-golden-gate--waterfront) |
+| Sep 20 | Sun | San Francisco | MS & LK fly YVR → SFO (UA1333, lands **12:11 PM**), rental pickup ~1 PM · KT & VT use public transit / taxi until then · afternoon start — trim [plan ↓](#sep-20--san-francisco-golden-gate--waterfront) |
 | Sep 21 | Mon | San Francisco | [See plan ↓](#sep-21--san-francisco-downtown--classic-sf) · Downtown, cable cars, Chinatown (BART day) |
 | Sep 22 | Tue | Yosemite | LK leaves the group (until Sep 27) · Check-out SF by 11 AM · Depart 7 AM · [See plan ↓](#sep-22--sf--yosemite-valley) · Wawona check-in (flexible) |
 | Sep 23 | Wed | Yosemite | [See plan ↓](#sep-23--yosemite--glacier-point--mariposa-grove) |