Aer LingusEI
Flights EI134 18:30 daily
live
Direct flights from Boston (BOS) to Shannon (SNN): 7 nonstop departures observed each week across 1 airline. The median arrival is 3 minutes late. No cancellations were recorded across the 4 tracked flights. The nonstop covers 4,646 km, an estimated 6 hours 27 minutes in the air. Measured by Pro Flight Search from live flight boards at Boston and Shannon. Updated 10 September 2026 at 21:56 UTC.
BOS
Boston
busy · +19
SNN
Shannon
tracking
4,646 km · ~6h 27m est.
Running clean · 1 airline · 7x weekly · nonstop
74 / 100
route health from live BOS and SNN delay boards
Median arrival delay is +3 min. 0 of 4 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival+3 minacross the last 4 operated legs
Flight time~6h 27mestimated from route distance
Weekly departures7x1 direct airline on the leg
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Aer Lingus
Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.
Who flies it
observed on the boards · 7 daysHistory
operated legs · board outcomesActual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsnext sweep in 120s
How the Boston to Shannon route actually runs
Pro Flight Search records official board updates for nonstop BOS to SNN flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.
Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Cite this data
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Suggested citation
Pro Flight Search — Boston (BOS) to Shannon (SNN) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/BOS-SNN
BOS to SNN questions
Is BOS–SNN running on time right now?
Mostly on schedule. The departure side at BOS is the weaker end, route health score 74/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from BOS to SNN?
Great-circle distance is 4,646 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 358–428 min gate-to-gate on this route.
How often does BOS–SNN fly?
Aer Lingus runs the route with about 7 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.
What does the route health score measure?
A blend of departure-side delay at BOS and arrival-side delay at SNN, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.
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