LIS → BOSLisbon to Boston

live

Direct flights from Lisbon (LIS) to Boston (BOS): 21 nonstop departures observed each week across 2 airlines. 100% of the last 6 tracked flights arrived within 15 minutes of schedule. The median arrival is 2 minutes early. No cancellations were recorded across the 10 tracked flights. The nonstop covers 5,124 km, an estimated 7 hours 4 minutes in the air. Measured by Pro Flight Search from live flight boards at Lisbon and Boston. Updated 29 October 2026 at 23:09 UTC.

Today, LIS → BOS

Thu 29 Oct · local times
TP217TAP-Air PortugalIn the air, 30 min late

Left LIS at 12:00, 30 min after its 11:30 slot.

Landing
15:09BOS board estimate · sched 15:30
Track TP217 →
TP215TAP-Air PortugalIn the air, 52 min late

Left LIS at 18:07, 52 min after its 17:15 slot.

Likely landing
about 21:30middle half 21:16 to 21:42 · sched 21:15

Landing estimate from 40,796 tracked flights of 8 hours or longer that left 30 to 59 min late. The BOS board has not posted a landing time yet. How planes make up time

Track TP215 →
  1. 11:15 DL125Delta Left 11:49 +34 Landed 15:00 +1
  2. 11:30 TP217TAP-Air Portugal Left 12:00 +30 BOS est. 15:09In the air · sched 15:30
  3. 17:15 TP215TAP-Air Portugal Left 18:07 +52 BOS about 21:30In the air · sched 21:15

Checked LIS board 23:08 · BOS board 19:09

LIS Lisbon smooth · +9
BOS Boston smooth · +0
5,124 km · ~7h 04m est.
dep bank 12:00–17:4021x weekly
Runs reliable · 2 airlines · 21x weekly · nonstop
100% on time

of the last 6 tracked LIS → BOS flights arrived within 15 minutes

Median arrival delay is −2 min. 0 of 10 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−2 minacross the last 6 arrivals
Flight time~7h 04mestimated from route distance
Weekly departures21x2 direct airlines on the leg
Cancelled0.0%recent route rate · 0 of 10

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Delta Air LinesTAP Air Portugal

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 days
Delta Air LinesDL

Flights DL125 12:45 daily

TAP Air PortugalTP

Flights TP217 varies daily · TP215 varies daily

History

operated legs · board outcomes
10-29DL125dep +34 → arr+1
10-29TP215departed+52
10-29TP217departed+30
10-28DL125dep +16 → arr−27
10-28TP217dep +17 → arr−23
10-27DL125dep +24 → arr+5
10-27TP217dep +24 → arr−2
10-26DL125departed+106
10-26TP215departed+66
10-26TP217dep +36 → arr−7

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
LISLisbon +9 min smooth 🌤 clear · NW 6 kt Full LIS delay board →
BOSBoston +0 min smooth 🌤 clear · SW 13 kt Full BOS delay board →

Weather lens

Conditions are tightest at BOS: a 41% chance of a 15+ minute delay. In this weather, the more delayed of the two airports is typically about +7 min. Both figures come from the two airports' delay records in similar weather. See live delays → · Weather risk by airport →

How the Lisbon to Boston route actually runs

Pro Flight Search records official board updates for nonstop LIS to BOS 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: Lisbon (LIS) to Boston (BOS) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/LIS-BOS
How we measure this →

LIS to BOS questions

Is LIS–BOS running on time right now?

Smooth skies ahead. The departure side at LIS is the weaker end, route health score 93/100. The airports section above carries the live status and delay window at both ends.

How long is the flight from LIS to BOS?

Great-circle distance is 5,124 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 392–469 min gate-to-gate on this route.

How often does LIS–BOS fly?

2 carriers operate this route, around 21 flights a week between them. Compare carrier days and times in the airline list above.

What does the route health score measure?

A blend of departure-side delay at LIS and arrival-side delay at BOS, 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.