KEF → IADReykjavík to Washington

live

Direct flights from Reykjavík (KEF) to Washington (IAD): 14 nonstop departures observed each week across 2 airlines. 95% of the last 19 operated flights arrived within 15 minutes of schedule. The median arrival is 20 minutes early. No cancellations were recorded across the 19 tracked flights. The nonstop covers 4,495 km, an estimated 6 hours 16 minutes in the air. Measured by Pro Flight Search from live flight boards at Reykjavík and Washington. Updated 7 September 2026 at 06:23 UTC.

KEF Reykjavík smooth · +4
IAD Washington smooth · +8
4,495 km · ~6h 16m est.
dep bank 11:30–19:5014x weekly
Runs reliable · 2 airlines · 14x weekly · nonstop
95% on time

of the last 19 operated KEF → IAD flights arrived within 15 minutes

Median arrival delay is −20 min. 0 of 19 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−20 minacross the last 19 operated legs
Flight time~6h 16mestimated from route distance
Weekly departures14x2 direct airlines on the leg
Cancelled0.0%recent route rate · 0 of 19

The week

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

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
IcelandairFI100% on time

Flights FI645 16:50 daily · FI649 19:50 Tu We Fr Sa

United AirlinesUA86% on time

Flights UA399 11:30 daily

History

operated legs · board outcomes
09-06FI645dep +14 → arr−31
09-06UA399dep −2 → arr−37
09-05FI645dep +24 → arr−17
09-05FI649dep −1 → arr−35
09-05UA399dep −3 → arr−43
09-04FI645dep +7 → arr−24
09-04FI649dep −8 → arr−34
09-04UA399dep +226 → arr+215
09-03FI645dep +26 → arr+10
09-03UA399dep −6 → arr−20
09-02FI645dep +3 → arr−13
09-02FI649dep −12 → arr−38
09-02UA399dep −2 → arr+5
09-01FI645dep +16 → arr−2
09-01FI649dep −6 → arr+4
09-01UA399dep −3 → arr−20
08-31FI645dep +3 → arr−29
08-31LXE401arrived+0
08-31UA399dep −1 → arr−25

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 +4 min smooth 🌤 few clouds · N 22 kt Full KEF delay board →
IADWashington +8 min smooth 🌤 clear · N 0 kt Full IAD delay board →

Weather lens

Current conditions put the pressure at KEF and IAD: 38% odds of a 15+ minute delay and around +6 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 Washington route actually runs

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

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

KEF to IAD questions

Is KEF–IAD running on time right now?

Smooth skies ahead. The arrival side at IAD is the weaker end, route health score 90/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on KEF–IAD?

Operators schedule morning departures around 11:30 and evening departures around 19:50 from KEF. Earlier flights typically land before destination-airport delays accumulate later in the day; check the IAD delay card to confirm conditions when you'd arrive.

How long is the flight from KEF to IAD?

Great-circle distance is 4,495 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 347–415 min gate-to-gate on this route.

How often does KEF–IAD fly?

2 carriers operate this route, around 18 flights a week between them. Compare carrier days and times in the airline list above.