Sources
Each carrier page has a "What other sources say" section that cross-references 7 third-party comparison tables. The carrier's own page wins on conflict; aggregators exist for cross-validation, drift detection, and coverage of carriers we can't reach directly.
357 aggregator rows currently matched to 63 of 75 tracked carriers.
| Source | Scope | Rows | Extracted by | Last fetched |
|---|---|---|---|---|
| Upgraded Points Checked Luggage Size Chart | checked | 222 | claude-haiku-4-5 | 2026-05-10 |
| Upgraded Points Carry-On Size Chart | cabin | 64 | claude-haiku-4-5 | 2026-05-10 |
| Going.com Baggage Fees | both | 57 | claude-haiku-4-5 | 2026-05-10 |
| The Points Guy Carry-On Policies | cabin | 22 | claude-haiku-4-5 | 2026-05-10 |
| SmarterTravel Best Carry-On Bags by US Airline | cabin | 11 | claude-haiku-4-5 | 2026-05-10 |
| Skyscanner Best Carry-On Luggage for Major Airlines | cabin | 8 | claude-haiku-4-5 | 2026-05-10 |
| Simple Flying US LCC Cabin Baggage Guide | cabin | 5 | claude-haiku-4-5 | 2026-05-10 |
Why these and not others
Picked because each one publishes a structured per-airline table that extracts cleanly and updates often enough to catch policy changes. SeatGuru used to be on this list; TripAdvisor blocked the URL in early 2026.
Provenance hierarchy
- Carrier site — extracted directly from the airline's published baggage page.
- Aggregator consensus — for airlines whose own page is bot-blocked or 404, we synthesize the rule from agreement across the third-party sources above.
- Seed — hand-curated placeholder for carriers we haven't extracted yet. Conservative.
Each carrier page tells you which one its rule came from in the
Source: line.