Delta Air Lines flights from London (LHR) to SeaTac (SEA)
Find comprehensive Delta Air Lines flight information, schedules, and booking details for direct flights from London (LHR), GB to SeaTac (SEA), US. Delta Air Lines operates 2-4 flights daily flights on this route.• Flight Duration: 9h 00m - 10h 38m (average flight time)• Distance: 4812 miles (7743 km) (air miles between airports)• Daily Flights: 2-4 flights (scheduled departures per day)
London (LHR)
GB
SeaTac (SEA)
US
FLIGHT TIME
9h 00m - 10h 38m
FLIGHT DISTANCE
4812 miles (7743 km)
10h 38m - 10h 38m
12:20
12:20
4812 miles (7743 km)
March
1 (Show)
21
Terminal 1 (SEA)
Delta Air Lines Flight Schedule from London (LHR) to SeaTac (SEA)
| Flight | Airline | Departure | Arrival | Aircraft |
|---|---|---|---|---|
DL21 |  Delta Air Lines | 12:20 | 14:58:00 | Airbus A330-200 |
Delta Air Lines Monthly Flight Calendar
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Route Insights
Pricing patterns: March typically offers lower prices due to reduced demand outside peak travel seasons.
Best departure times: Peak departure times are 12:00, offering more flight options and potentially better connections.
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Delta Air Lines Policy Highlights
Baggage Policy
Standard baggage allowance varies depending on the class of travel. Additional charges may apply for excess baggage.
For detailed baggage policies, visit Delta Air Lines airline page or Delta Air Lines official website.
Check-in Information
Online check-in available 24 hours before departure.
Delta Air Lines Terminal Information
Departure Terminal at London (LHR):
Arrival Terminal at SeaTac (SEA):
• Delta Air Lines flights to SeaTac (SEA) arrive at Terminal Terminal 1
• Terminal Terminal 1: Delta Air Lines operates from this terminal
Frequently Asked Questions about Delta Air Lines Flights
How many Delta Air Lines flights operate from London (LHR) to Seattle (SEA)?
Delta Air Lines operates 1 flight from London (LHR) to Seattle (SEA).
What city does Seattle (SEA) airport serve?
Seattle (SEA) airport serves SeaTac, US.
How long is the Delta Air Lines flight from London (LHR) to Seattle (SEA)?
The flight duration is approximately 9h 00m - 10h 38m.
What is the distance from London (LHR) to Seattle (SEA)?
The distance is 4812 miles (7743 km).
What aircraft does Delta Air Lines use on this route?
Delta Air Lines uses Airbus A330-200 on this route.
Which other airlines operate on this route?
2 other airlines operate on this route: Virgin Atlantic, British Airways.
Which terminal does Delta Air Lines use at Seattle (SEA)?
Delta Air Lines flights to Seattle (SEA) arrive at Terminal Terminal 1.
What is the cheapest month to fly Delta Air Lines from London (LHR) to Seattle (SEA)?
March is typically the cheapest month to fly Delta Air Lines on this route.
What is the average price for a Delta Air Lines flight from London (LHR) to Seattle (SEA)?
The average price for a round-trip Delta Air Lines flight on this route is approximately $828. Prices can vary based on booking time and demand.
How many Delta Air Lines flights operate per week on this route?
Delta Air Lines operates approximately 21 flights per week from London (LHR) to Seattle (SEA).