How often is WN551 on time?

Across 57 flights on BOS → BWI from 2026-04-07 to 2026-06-03, WN551 arrived within 15 minutes of schedule 56% of the time. The median arrival delay was +10 min, and the worst 10% of flights arrived +69 min or later. 0% of flights were cancelled.

Delay distribution

Arrival delay for completed flights (excludes cancellations and diversions).

Performance by month

Performance by day of week

Other routes

• WN551 on SMF → EUG (7 flights)
• WN551 on BNA → LAX (20 flights)
• WN551 on LAX → SMF (4 flights)
• WN551 on AUS → BOS (32 flights)
• WN551 on BWI → MCO (24 flights)
• WN551 on BWI → RDU (7 flights)
• WN551 on ELP → DAL (1 flights)
• WN551 on DAL → AUS (1 flights)
• WN551 on ATL → LAS (33 flights)
• WN551 on TPA → AUS (42 flights)
• WN551 on BNA → MCO (11 flights)
• WN551 on MCI → DEN (5 flights)
• WN551 on AUS → ECP (35 flights)
• WN551 on STL → ATL (28 flights)
• WN551 on DAL → LAS (1 flights)
• WN551 on HOU → LAS (31 flights)
• WN551 on AUS → DEN (42 flights)
• WN551 on DAL → SAN (7 flights)
• WN551 on SJC → GEG (8 flights)
• WN551 on ATL → HOU (1 flights)
• WN551 on DAL → PHX (15 flights)
• WN551 on LAS → ONT (20 flights)
• WN551 on MCO → LAS (10 flights)
• WN551 on PHX → BUR (1 flights)

Related

• All Southwest Airlines flights on BOS → BWI
• Compare airlines on BOS → BWI
• Southwest Airlines on the return, BWI → BOS