Does the Diggs Passenger fit Southwest Airlines?

No — the Diggs Passenger (17 × 12 × 10.5 in) does not fit Southwest Airlines's 18 × 10.5 × 10 in under-seat limit.

Diggs has discontinued this carrier. The Amazon link below goes to comparable carriers, not to this bag — so read the verdict above as a record of what this carrier measured, not as a buying recommendation.

Dimensions from the retailer listing — not yet confirmed against Diggs's published spec, so measure yours before you fly. The verdict above is computed from those figures.

Diggs publishes no pet-size limit for this carrier. The 17 × 12 × 10.5 in above is what Southwest Airlines measures, not the room your pet gets — measure your pet lying down before you buy. How →

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17 × 12 × 10.5 in is over the 18 × 10.5 × 10 in limit.

Last verified 2026-09-24 · matched to the published Southwest Airlines limit. Every fit is against the published maximum; real under-seat space varies by aircraft (why).

Full Southwest Airlines shortlist: all carriers that fit Southwest Airlines → · this carrier on other airlines: Diggs Passenger specs → · Southwest Airlines rules & fees: Southwest Airlines pet policy →