SEA - LON Price | C$ 687 - C$ 1,174 |
---|---|
LON Temperature | 4 - 17 °C |
LON Rainfall | 40 - 70 mm |
Popular in | July | High demand for flights, 21% potential price rise |
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Cheapest in | February | Best time to find cheap flights, 26% potential price drop |
Round-trip from | C$ 943 | From Seattle/Tacoma Intl to London (LON) |
One-way from | C$ 477 | One-way flight from Seattle/Tacoma Intl to London (LON) |
Wednesday is generally a great day to depart. Flying on this day could help you save up to 36%.
To save up to 44% on this flight, we recommend booking at least 27 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Seattle to London from C$ 1,513 1-2 weeks out and tickets from C$ 2,021 for flights departing within the next 72 hours.
February is one of the best times of the year to fly to London from Seattle. Prices for February average C$ 1,270 per person but you can even find prices for as low as C$ 788. The most expensive prices can be found in the month of July. Opting for a February flight can save you 26% on your journey compared to booking in July
It’s optimal to fly from Seattle to London at noon. By choosing this option you can save up to 20% on the cost of your flight, compared to a flight in the morning.
Fly from
Fly to
Budget
C$ 931 - C$ 1,037
Route
Depart
Return
Price
Seattle/Tacoma IntlLondon Heathrow
SEA - LHR
SEALHR
Seattle/Tacoma Intl
2023-04-16
1 stop14h 30m
London Heathrow
2023-04-28
1 stop17h 25m
Seattle/Tacoma IntlLondon Heathrow
SEA - LHR
SEALHR
Seattle/Tacoma Intl
2023-04-18
Nonstop9h 45m
London Heathrow
2023-04-27
1 stop12h 50m
Seattle/Tacoma IntlLondon Heathrow
SEA - LHR
SEALHR
Seattle/Tacoma Intl
2023-04-17
Nonstop9h 26m
London Heathrow
2023-04-28
Nonstop10h 00m
Seattle/Tacoma IntlLondon Heathrow
SEA - LHR
SEALHR
Seattle/Tacoma Intl
2023-04-17
1 stop13h 58m
London Heathrow
2023-04-28
1 stop12h 50m
Seattle/Tacoma IntlLondon Heathrow
SEA - LHR
SEALHR
Seattle/Tacoma Intl
2023-09-10
1 stop17h 25m
London Heathrow
2023-09-27
1 stop12h 35m
Seattle/Tacoma IntlLondon Heathrow
SEA - LHR
SEALHR
Seattle/Tacoma Intl
2023-04-17
1 stop15h 19m
London Heathrow
2023-04-25
2 stops19h 45m
Seattle/Tacoma IntlLondon Heathrow
SEA - LHR
SEALHR
Seattle/Tacoma Intl
2023-04-17
2 stops20h 33m
London Heathrow
2023-04-25
2 stops41h 21m
Seattle/Tacoma IntlLondon Heathrow
SEA - LHR
SEALHR
Seattle/Tacoma Intl
2023-04-18
1 stop17h 20m
London Heathrow
2023-04-28
1 stop13h 50m
Seattle/Tacoma IntlLondon Heathrow
SEA - LHR
SEALHR
Seattle/Tacoma Intl
2023-09-12
Nonstop9h 30m
London Heathrow
2023-09-27
Nonstop9h 45m
Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to London. On average, Seattle/Tacoma Intl has 20 outbound flights to London per day from 3 airlines. Seattle/Tacoma Intl is conveniently located just 18.4 km from Seattle’s city centre.
Virgin Atlantic, British Airways, and Icelandair are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.
Yes, there are multiple flights from Seattle to London for under C$ 1,000. The cheapest flight booked recently is on Aer Lingus for just C$ 931, but on average you can expect to pay C$ 975.
Cheapflights has 20 direct flights from Seattle to London under C$ 1,000. A good price for a direct flight from Seattle to London is less than C$ 1,160.
There are currently 20+ open flights from Seattle to London within the next 7 days for less than C$ 1,200.
Days when direct flights are available for this flight are: Monday, Friday.
11 flight departures from Seattle to London per day on average.
Afternoon (Noon - 6pm) - 55% of flight departures
Evening (6pm - Midnight) - 45% of flight departures
Aer Lingus, Delta, and Finnair can get you from Seattle to London in just under 9h 26m. Your travel time can differ by up to 5h 04m. The distance between Seattle and London is about 7744 km. This flight may include one or multiple stops.
According to our current data, Aer Lingus (C$ 931), Delta (C$ 950), and Finnair (C$ 954) offers the cheapest pricing from Seattle to London. These flights start at 26% lower than the current average price 3 months from now.
Consider British Airways, Icelandair or Virgin Atlantic when booking your flight. These represent the most popular airlines when flying from Seattle to London.
The top 3 most reliable airlines when flying from Seattle to London are Alaska Airlines (88%), Aeromexico (86%) and Singapore Airlines (86%).
Looking at all options, your cheapest flight can be booked for C$ 911. While the most popular route (Seattle/Tacoma Intl - London Heathrow) can be booked for C$ 931 on average our data indicates C$ 1,792 when flying from Seattle to London.
SEA and LHR are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. SEA to LHR refers to a flight route from Seattle/Tacoma Intl Airport to London Heathrow Airport. London Gatwick Airport (LGW), London Stansted Airport (STN), London City Airport (LCY), London Luton Airport (LTN), London Southend Airport (SEN) are other airports near this flight route and their unique identifiers/IATA codes.
1%of flight departures | Early morningMidnight to 6 am |
---|---|
0%of flight departures | Morning6 am to noon |
59%of flight departures | AfternoonNoon to 6 pm |
40%of flight departures | Evening6 pm to midnight |
Sunday | 20daily flights |
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Monday | 20daily flights |
Tuesday | 19daily flights |
Wednesday | 20daily flights |
Thursday | 25daily flights |
Friday | 20daily flights |
Saturday | 20daily flights |