FI631Icelandair · KEF → BOS
live · 26m ago
Route confirmed Icelandair

FI631 ReykjavíkKEF · 17:00 BostonBOS · 17:50

FI631 by Icelandair flies from Reykjavík (KEF) to Boston (BOS) for the Mon, Nov 9 departure.

Right nowScheduled · gate D21 · as of 05:08
17:00

departs KEF · on schedule

Typical arrival−5 minmedian over 4 operations
Wins back in air~13 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 4 operations · gate push → arrival
0+30+60+90 min
11-09
−12 arrival
11-08
−2 gate · −12 arrival
11-07
+17 gate · +14 arrival
11-06
+2 arrival

The bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.

The route today

live boards
KEFReykjavíkModerate riskKEF delay board →
BOSBostonOn-time likelyBOS delay board →
KEF→BOSevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
36%Chance of 15+ min delay
2.9%Chance of cancellation
+4 minTypical airport delay in this weather

Conditions at KEF and BOS are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. These figures come from both airports' records under conditions like today's, over the last 90 days.

Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →

Tomorrow at Reykjavík

Forecast

Tue 10 Nov, local date

High6°Clikely 5°C to 8°C
Low0°Clikely −3°C to 2°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

Tomorrow at Boston

Forecast

Tue 10 Nov, local date

High14°Clikely 12°C to 16°C
Low7°Clikely 5°C to 9°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other Reykjavík to Boston flights today

same route · Icelandair
FI635departs 10:25
FI633departs 20:25

If FI631 is cancelled, these are the other Icelandair nonstop flights from Reykjavík to Boston on the same day, with scheduled departure times in KEF local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →

How FI631 actually runs

Pro Flight Search has tracked every published board update for FI631 across the KEF and BOS boards: schedule changes, gate pushes and actual clocks. Usually lands ~5 min early. Based on 4 confirmed landings · 4/4 within 15 min of schedule. Pushes back late but makes up time in the air.

The verdict above is that record speaking, so it reflects how FI631 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocks

Board log

scheduled → actual, per operation
11-09KEF 17:00BOS 17:50 17:38 (−12)
11-08KEF 17:00 16:58 (−2)BOS 17:50 17:38 (−12)
11-07KEF 17:00 17:17 (+17)BOS 17:50 18:04 (+14)
11-06KEF BOS 17:50 17:52 (+2)

Board clocks recorded as KEF and BOS published them.

Planning around FI631? 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: FI631 Reykjavík to Boston on-time performance, measured from the KEF and BOS airport boards.

Canonical URL
https://proflightsearch.com/flight/FI631
How we measure this →