JetBlue Airways· Callsign JBU1621

B61621 Flight Status: London to Boston

JetBlue Airways between London and Boston: 5,240 km west, long-haul, tracked live here whenever it is transmitting.

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Status on this page means observed ADS-B activity inside available receiver coverage. Confirm official delay, cancellation, gate and booking status with JetBlue Airways.

LHR
London
London Heathrow Airport
5,240 km · 3,256 mi
Non-stop
BOS
Boston
Boston Logan International Airport
Aircraft
Not yet observed
fills in once we log the airframe
Distance
5,240 km
2,830 nautical miles
Heading
288°
tracks west
Clock change
-5 h
on arrival
Length rank
#170
of 267 tracked routes

Follow B61621 in real time

The aircraft appears below whenever it is airborne and inside receiver coverage. Its planned route is drawn between the two airports.

B61621 is not transmitting right now. It may be between rotations, on the ground, or out of receiver range - Check back near departure time. The full map has the rest of the sky, and what is flying over me will name whatever is above you instead.

B61621 at a glance

  • The trip: 5,240 km (3,256 miles) from London to Boston, flying west.
  • How long: no published block time for this service yet.
  • Your watch: set it 5 hours back on arrival.
  • Window seat tip: the left (south-facing) side gets the sun on a daytime flight.

B61621 route overview: LHR to BOS

B61621 distance and great-circle path

B61621 covers 5,240 km, or 3,256 miles. That makes it a long-haul flight, a widebody route with a full night's flying time. Of the 267 routes we track, it ranks 170 by distance.

London to Boston is 5,240 km (3,256 miles) on an initial heading of 288°, which is broadly west. Watches move 5 hours back between the two gates. It links United Kingdom with United States.

Our guide explains how the LHR-BOS route appears on a tracker map.

What to know about B61621

  • Time change: you land 5 hours behind the time you left. That is enough to cause jet lag. Here is how pilots handle it.

What we know about B61621

What flying LHR to BOS takes

It is a long-haul sector, a widebody route with a full night's flying time. JetBlue Airways needs a widebody twinjet: the sector needs long-range tanks and a cabin crew rest provision, which rules out most single-aisle types. Westbound, this route pushes into the prevailing winds aloft, which is why the eastbound leg is normally the quicker one. In daylight the sun sits on the left (south-facing) side of the cabin for most of the crossing.

How we verified this

The origin and destination on this page are the ones we verified for callsign JBU1621 through adsbdb, not a schedule copied from elsewhere. We have logged it airborne on 4 days between 2026-09-20 and 2026-09-23. Timings are observations, not an official operational status: always confirm with the airline before travelling.

This page was published from our own tracking record rather than a third-party schedule feed, so it grows as we see the flight again. The seven-day log below is the raw version of the same evidence.

B61621 activity in the past 7 days

Our database contains 4 observations of B61621 across 4 UTC dates in this window, most recently 2026-09-23. Those records contain 4 distinct transponder addresses. The most frequently resolved route was LHR-BOS (4 records).

The median recorded visibility was 443 minutes. That is time inside receiver coverage, not airborne duration or an on-time-performance measurement.

Date (UTC)RouteFirst trackedLast trackedTracked for
2026-09-23 LHR → BOS 07:47 UTC 15:05 UTC 7h 18m
2026-09-22 LHR → BOS 08:06 UTC 15:34 UTC 7h 28m
2026-09-21 LHR → BOS 08:00 UTC 15:13 UTC 7h 13m
2026-09-20 LHR → BOS 07:41 UTC 15:23 UTC 7h 42m

“First/last tracked” are when B61621 entered and left receiver coverage, in UTC.

Airports and aircraft on B61621

Every scheduled service we follow is listed in the tracker directory, including JetBlue Airways and other tracked flights grouped by airline.

LHR London Heathrow Airport London, United Kingdom · live radar → BOS Boston Logan International Airport Boston, United States · live radar →

Other tracked flights from London

FlightRouteTypical aircraft
BA117London (LHR) → New York (JFK) BA117 flight tracker →
BA302Paris (CDG) → London (LHR) BA302 flight tracker →
DL1New York (JFK) → London (LHR) Airbus A330-900neoDL1 flight tracker →
AA100New York (JFK) → London (LHR) Boeing 777-300ERAA100 flight tracker →
AA50Dallas/Fort Worth (DFW) → London (LHR) Boeing 777-300ERAA50 flight tracker →
B6007New York (JFK) → London (LHR) Airbus A321LRB6007 flight tracker →

Guides relevant to B61621

Chosen from this route's distance, timing, aircraft, airline and airports.

The science of jet lag Arrival shifts the clock by 5 hours. Narrowbody vs widebody aircraft A long-haul sector makes aircraft size, cabin layout and range especially relevant. The world's busiest airports LHR is a high-volume gateway where hub structure shapes the flight.

Data sources and review

Reviewed 2026-07-29 by Flight-Tracker.net Editorial Team

The route and typical schedule are maintained reference data. Live ADS-B observations are evidence of receiver coverage, not proof of on-time performance. Always confirm the operating date and times with the airline.

Read our schedule and observation review process, or inspect the machine-readable reference dataset.

Put B61621 on your own site

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B61621 frequently asked questions

How long is the B61621 flight?

London to Boston is 5,240 km (3,256 miles) in a straight line. Actual airborne time varies with winds, routing and holding.

What aircraft operates B61621?

Typically a .

Does B61621 fly every day?

Frequency varies by season. Always confirm with the airline before travelling.

Can I track B61621 live?

Yes. Whenever B61621 is airborne and in receiver coverage the map above follows it live, with altitude, ground speed and heading. Between rotations, the seven-day log above shows where it has been.

More JetBlue Airways flights to watch

FlightRouteTypical aircraft
B6007 New York (JFK) → London (LHR) Airbus A321LR B6007 flight tracker →
B61 New York (JFK) → Fort Lauderdale (FLL) Airbus A320 B61 flight tracker →
B6615 New York (JFK) → Los Angeles (LAX) Airbus A321 B6615 flight tracker →
B6703 New York (JFK) → San Juan (SJU) Airbus A320 B6703 flight tracker →
B6033 Boston (BOS) → Paris (CDG) Airbus A321LR B6033 flight tracker →