KEF → BOSReykjavík to Boston

live

Direct flights from Reykjavík (KEF) to Boston (BOS): 7 nonstop departures observed each week across 1 airline. The median arrival is 9 minutes late. No cancellations were recorded across the 4 tracked flights. The nonstop covers 3,874 km, an estimated 5 hours 28 minutes in the air. Measured by Pro Flight Search from live flight boards at Reykjavík and Boston. Updated 24 October 2026 at 05:35 UTC.

Today, KEF → BOS

Sat 24 Oct · local times
  1. 17:10 FI631Icelandair On scheduleGate D21 ·

Checked KEF board 05:35 · BOS board 01:47

KEF Reykjavík smooth · +14
BOS Boston smooth · +0
3,874 km · ~5h 28m est.
dep bank 17:10–19:557x weekly
Running clean · 1 airline · 7x weekly · nonstop
91 / 100

route health from live KEF and BOS delay boards

Median arrival delay is +9 min. 0 of 4 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival+9 minacross the last 4 operated legs
Flight time~5h 28mestimated from route distance
Weekly departures7x1 direct airline on the leg

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Icelandair

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
IcelandairFI

Flights FI631 17:10 daily · FI633 19:55 Mo We Fr Su

History

operated legs · board outcomes
10-23FI631dep −2 → arr−22
10-23FI633dep −4 → arr−47
10-22FI631dep +2 → arr+21
10-21FI631arrived+9

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
KEFReykjavík +14 min smooth 🌤 clear · ENE 6 kt Full KEF delay board →
BOSBoston +0 min smooth 🌤 clear · N 0 kt Full BOS delay board →

Weather lens

Current conditions put the pressure at BOS: 40% odds of a 15+ minute delay and around +9 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the Reykjavík to Boston route actually runs

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

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

KEF to BOS questions

Is KEF–BOS running on time right now?

Smooth skies ahead. The departure side at KEF is the weaker end, route health score 91/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on KEF–BOS?

Operators schedule evening departures around 17:10 from KEF. Earlier flights typically land before destination-airport delays accumulate later in the day; check the BOS delay card to confirm conditions when you'd arrive.

How long is the flight from KEF to BOS?

Great-circle distance is 3,874 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 303–362 min gate-to-gate on this route.

How often does KEF–BOS fly?

Icelandair runs the route with about 11 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.