route Route

LHR → SEA

Q: How long is the flight from LHR to SEA?

Average flight time on the LHR–SEA route is 5h 2m , covering approximately 514 km (319 mi).

Q: What is the distance from LHR to SEA?

The great-circle distance from LHR to SEA is approximately 514 km (319 miles).

Q: How many flights per week from LHR to SEA?

We've observed ~2 flights per day on this route across our tracking data (4 total flights recorded).

514 km avg 5h 2m 1 airline

Local time: 10:29 GMT+1
Timezone: Europe/London
Type: Large Airport
Elevation: 83 ft
Coordinates: 51.4707, -0.4599

cloud Weather

Wind: 200° / 12 kt
Visibility: 6 SM
Ceiling: BKN 800 ft
Temp / Dew: 14°C / 12°C
Altimeter: 29.97 inHg

Obs: 2026-04-15T08:50:00.000Z

Raw METAR / TAF

METAR EGLL 150850Z COR AUTO 20012KT 170V250 9999 BKN008 14/12 Q1015 NOSIG

TAF EGLL 150458Z 1506/1612 18010KT 9999 BKN014 TEMPO 1506/1510 6000 -RA SCT007 BKN009 PROB30 TEMPO 1506/1508 2500 RADZ BKN004 BECMG 1510/1513 SCT025 TEMPO 1511/1519 6000 RA SHRA PROB40 TEMPO 1513/1518 21016G26KT 3000 +SHRA BKN014 PROB30 TEMPO 1602/1608 BKN012 BECMG 1609/1612 24011KT PROB30 TEMPO 1610/1612 7000 SHRA

flight Live Traffic

flight_takeoff 37 Departures

flight_land 36 Arrivals

Local time: 02:29 PDT
Timezone: America/Los_Angeles
Type: Large Airport
Elevation: 433 ft
Coordinates: 47.4479, -122.3103

cloud Weather

Wind: 20° / 8 kt
Visibility: 7 SM
Ceiling: BKN 1,000 ft, OVC 1,600 ft
Temp / Dew: 6°C / 4°C
Altimeter: 29.78 inHg
Wx: -RA

Obs: 2026-04-15T08:53:00.000Z

Raw METAR / TAF

METAR KSEA 150853Z 02008KT 7SM -RA BKN010 OVC016 06/04 A2978 RMK AO2 RAE0754B42 SLP091 P0000 60018 T00560044 53003

TAF KSEA 150855Z 1509/1612 23009KT P6SM VCSH FEW006 BKN011 OVC035 FM151500 21007KT P6SM VCSH SCT025 BKN035 FM151900 22010G18KT P6SM -SHRA SCT030 BKN040 PROB30 1521/1524 5SM -TSRA BKN040CB FM160000 23009KT P6SM -RA SCT025 BKN035 FM160200 03006KT P6SM -RA SCT025 BKN035

flight Live Traffic

flight_takeoff 163 Departures

flight_land 173 Arrivals

Flights tracked: 4
Avg duration: 5h 2m
Distance: 514 km

Live traffic

LHR → SEA. Live aircraft currently filed on this route.

Airlines 1

Airline	Flights shown
Delta Air Lines	4

Other connections

More destinations from LHR

SIN WSSS 51 flights
JFK KJFK 49 flights
DEL VIDP 29 flights
SFO KSFO 26 flights
HKG VHHH 24 flights
LAX KLAX 24 flights
BKK VTBS 22 flights
BOM VABB 22 flights
DOH OTHH 22 flights
EWR KEWR 18 flights

More origins to SEA

SJC KSJC 45 flights
LAX KLAX 27 flights
SNA KSNA 21 flights
JFK KJFK 20 flights
LAS KLAS 19 flights
BOS KBOS 18 flights
PHX KPHX 17 flights
OAK KOAK 16 flights
ORD KORD 14 flights
SFO KSFO 13 flights

Recent flights last 4

Date	Flight	Aircraft	Takeoff	Landing	Duration	Arr Δ
2026-04-13	DAL21	A4EE82	Apr 13, 21:20 UTC	Apr 13, 22:00 UTC	40m	-
2026-04-13	DAL21	A4EE82	Apr 13, 16:55 UTC	Apr 14, 02:02 UTC	9h 7m	+9m
2026-04-13	DAL21	A544EE	Apr 13, 01:45 UTC	Apr 13, 03:00 UTC	1h 15m	-
2026-04-12	DAL21	A544EE	Apr 12, 17:50 UTC	Apr 13, 02:56 UTC	9h 6m	+24m

LHR → SEA frequently asked

How long is the flight from LHR to SEA?

Average flight time on the LHR–SEA route is 5h 2m, covering approximately 514 km (319 mi).

What is the distance from LHR to SEA?

The great-circle distance from LHR to SEA is approximately 514 km (319 miles).

Which airlines fly from LHR to SEA?

1 airline operates this route in our records: Delta Air Lines.

How many flights per week from LHR to SEA?

We've observed ~2 flights per day on this route across our tracking data (4 total flights recorded).

Can I track LHR–SEA flights live?

Yes. The live tracker map above shows aircraft currently flying this route, filtered by departure and arrival airport.

LHR → SEA

London Heathrow Airport

cloud Weather

flight Live Traffic

Seattle–Tacoma International Airport

cloud Weather

flight Live Traffic

Live traffic

Airlines 1

Other connections

More destinations from LHR

More origins to SEA

Recent flights last 4

LHR → SEA frequently asked