---
title: "Reykjavík to Boston (KEF → BOS): distance and flight time · Orbit"
description: "Reykjavík to Boston is 3,875 km (2,408 mi) great circle, an estimated 5h 19m in the air. The route, what it flies over, and why the short way is not the straight line on a map."
url: https://orbitflights.app/routes/kef-to-bos
---

KEF → BOS

# Reykjavík to Boston: distance, flight time and the route it really takes

Keflavik to Boston Logan is 3,875 km of great circle — 2,408 mi — and an estimated 5h 19m in the air. It crosses from Europe to North America.

**Great circle**
3,875 km
2,408 mi

**Estimated in the air**
5h 19m
block time

**Furthest from equator**
64.0°N
at 0% along

**One lap of Earth**
9.7%
of 40,075 km

Of the [292 routes catalogued here](https://orbitflights.app/routes), this is the 152nd longest.

The Reykjavík to Boston route drawn as a great circle arc on a globe

## What the aircraft actually flies over

From Reykjavík the path crosses 2,218 km of open water, then Canada, then the United States.

The furthest the great circle gets from the equator is 64.0°N, 0% of the way along.

Flying the line that looks straight on a Mercator map — one constant compass bearing — would cover 3,952 km. That is 77 km further, about 2% more, and roughly 6m of extra flying.

Leaving Reykjavík the aircraft points west (255°); it arrives into Boston heading south-west (215°). That is 40° of drift without a single turn — the compass moves because the path is a curve on a sphere, not because the aircraft does.

One economy seat on it is about 549 kg of CO₂e each way, counting non-CO₂ warming.

[KEF–BOS carbon footprint →](https://orbitflights.app/tools/flight-carbon-calculator?from=KEF&to=BOS) [Map this route →](https://orbitflights.app/tools/flight-route-map?r=KEF-BOS)

From

KEF

## Keflavik

Reykjavík, Iceland · Europe

64.0°N, 22.6°W

[KEF airport →](https://orbitflights.app/airports/kef)

To

BOS

## Boston Logan

Boston, United States · North America

42.4°N, 71.0°W

[BOS airport →](https://orbitflights.app/airports/bos)

## Reykjavík to Boston, asked and answered

**How far is Reykjavík to Boston?**
Reykjavík to Boston (KEF to BOS) is 3,875 km, or 2,408 mi, measured as great circle distance between the two airports.

**How long is the flight from Reykjavík to Boston?**
About 5h 19m in the air. That is an estimate from the distance at a typical airliner block speed, plus half an hour for taxi, climb and descent; published schedules vary with winds and routing.

**What route does a Reykjavík to Boston flight take?**
The great circle passes over 2,218 km of open water, then Canada, then the United States. It reaches 64.0°N at its furthest from the equator.

## Where these numbers come from

Distances are computed from the two airports’ own coordinates, not looked up from published routes. Times are estimates, not schedules.

[Why the shortest path is a curve →](https://orbitflights.app/blog/great-circle-routes-explained)

## Flown this one?

Orbit logs it in two taps and draws the arc on your own globe, along with every other flight you can remember. Free for your first 15.

[Download now](https://play.google.com/store/apps/details?id=com.qwertybit.orbit)

## Nearby routes

[KEF → JFK Reykjavík to New York 4,163 km](https://orbitflights.app/routes/kef-to-jfk) [DUB → BOS Dublin to Boston 4,804 km](https://orbitflights.app/routes/dub-to-bos) [LHR → BOS London to Boston 5,240 km](https://orbitflights.app/routes/lhr-to-bos) [CPH → KEF Copenhagen to Reykjavík 2,144 km](https://orbitflights.app/routes/cph-to-kef) [LHR → KEF London to Reykjavík 1,895 km](https://orbitflights.app/routes/lhr-to-kef) [JFK → SEA New York to Seattle 3,887 km](https://orbitflights.app/routes/jfk-to-sea)

## Further reading

[How many miles do you have to fly around the world?](https://orbitflights.app/blog/how-many-miles-to-fly-around-the-world) [What is on the exact opposite side of the world?](https://orbitflights.app/blog/opposite-side-of-the-world) [What's actually worth counting in a flight log](https://orbitflights.app/blog/what-is-worth-counting-in-a-flight-log)

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Markdown copy of https://orbitflights.app/routes/kef-to-bos for language models and agents. Site index: https://orbitflights.app/llms.txt