NZ$652 Cheap Flights Seattle to London (SEA-LON)

View NZ$652 flight on Sun, 29 Mar 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to London

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 35% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Seattle (SEA) to London (LON)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Mon, 23 Feb - Tue, 3 Mar
SEA
Seattle
LGW
London
NZ$924 Return, found 6 days ago
NZ$924
Return
found 6 days ago
Select Icelandair flight, departing Mon, 23 Feb from Seattle to London, returning Tue, 3 Mar, priced at NZ$924 found 6 days ago
Icelandair
Mon, 23 Feb - Tue, 3 Mar
SEA
Seattle
LHR
London
NZ$960 Return, found 6 days ago
NZ$960
Return
found 6 days ago
Select Icelandair flight, departing Mon, 23 Feb from Seattle to London, returning Tue, 3 Mar, priced at NZ$960 found 6 days ago
Aer Lingus
Sun, 29 Mar - Tue, 14 Apr
SEA
Seattle
LHR
London
NZ$1,040 Return, found 3 days ago
NZ$1,040
Return
found 3 days ago
Select Aer Lingus flight, departing Sun, 29 Mar from Seattle to London, returning Tue, 14 Apr, priced at NZ$1,040 found 3 days ago
Virgin Atlantic
Mon, 9 Mar - Tue, 24 Mar
SEA
Seattle
LHR
London
NZ$1,080 Return, found 6 days ago
NZ$1,080
Return
found 6 days ago
Select Virgin Atlantic flight, departing Mon, 9 Mar from Seattle to London, returning Tue, 24 Mar, priced at NZ$1,080 found 6 days ago
Air Canada
Sun, 29 Mar - Tue, 14 Apr
SEA
Seattle
LHR
London
NZ$1,096 Return, found 3 days ago
NZ$1,096
Return
found 3 days ago
Select Air Canada flight, departing Sun, 29 Mar from Seattle to London, returning Tue, 14 Apr, priced at NZ$1,096 found 3 days ago
Virgin Atlantic
Sun, 29 Mar - Tue, 14 Apr
SEA
Seattle
LCY
London
NZ$1,108 Return, found 3 days ago
NZ$1,108
Return
found 3 days ago
Select Virgin Atlantic flight, departing Sun, 29 Mar from Seattle to London, returning Tue, 14 Apr, priced at NZ$1,108 found 3 days ago
United
Sun, 29 Mar - Tue, 14 Apr
SEA
Seattle
LHR
London
NZ$1,111 Return, found 3 days ago
NZ$1,111
Return
found 3 days ago
Select United flight, departing Sun, 29 Mar from Seattle to London, returning Tue, 14 Apr, priced at NZ$1,111 found 3 days ago
KLM
Sun, 29 Mar - Tue, 14 Apr
SEA
Seattle
LHR
London
NZ$1,141 Return, found 3 days ago
NZ$1,141
Return
found 3 days ago
Select KLM flight, departing Sun, 29 Mar from Seattle to London, returning Tue, 14 Apr, priced at NZ$1,141 found 3 days ago
British Airways
Sun, 29 Mar - Tue, 14 Apr
SEA
Seattle
LHR
London
NZ$1,171 Return, found 3 days ago
NZ$1,171
Return
found 3 days ago
Select British Airways flight, departing Sun, 29 Mar from Seattle to London, returning Tue, 14 Apr, priced at NZ$1,171 found 3 days ago
Air France
Mon, 9 Mar - Tue, 24 Mar
SEA
Seattle
LHR
London
NZ$1,183 Return, found 6 days ago
NZ$1,183
Return
found 6 days ago
Select Air France flight, departing Mon, 9 Mar from Seattle to London, returning Tue, 24 Mar, priced at NZ$1,183 found 6 days ago

The Annual Holiday Sale

Members save up to 40% on hotels and homes. Plan this year’s big trip and save.
Book now

Alternative airports near London

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Heathrow LHR. Cheapest option available. Average driving time to city centre is 28 minutes. Flights from NZ$1,035
LHR
Heathrow
Cheapest
Average driving time to city centre28 min
Flights from NZ$1,035
Flight from Seattle to London route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Gatwick
Return price
NZ$924
Distance
7697 km

Perfect flights from Seattle to London

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Seattle to London. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Seattle - Tacoma Intl. to LON-All Airports ticket options cater to your travel preferences, with incredible one-way fares from NZ$652 and roundtrip prices from NZ$924. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at LON-All Airports and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in London.

Frequently asked questions

How much is a flight from Sea-Tac Airport to London (LON-All Airports)?
Round-trip journeys from Seattle - Tacoma Intl. Airport (SEA) to London (LON-All Airports) start from NZ$924. This is based on fares offered within the last 7 days on Expedia for flights departing within the next year — book now so you don't miss out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from SEA to London (LON-All Airports)?
Most flights can be cancelled online, but each air carrier has its own terms and conditions. If you do decide to cancel your flight, visit our Customer Service Portal and follow the instructions.
How do I find cheap flights from SEA to London (LON-All Airports) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for SEA to London (LON-All Airports) flights, you'll see a "no change fees" filter for you to select.
How many hours is the flight from Seattle - Tacoma Intl. Airport (SEA) to London (LON-All Airports)?
Make the 14 hours and 48 minutes between SEA and London (LON-All Airports) as comfortable as you can. Bring the essentials, like a water bottle, toothbrush and toiletries, and simply enjoy the flight!
How far is the flight from SEA to London (LON-All Airports)?
With around 7 700 kilometres separating SEA and London (LON-All Airports), your flight will be a long one. Pack wisely and make your time on board comfortable. Simple things like an eye mask and a good travel pillow can make a massive difference.
Which airlines fly direct from Seattle - Tacoma Intl. Airport (SEA) to London (LON-All Airports)?
You have lots of options when flying from SEA to London (LON-All Airports). Lock in your fare with one of these popular airlines:

  • Virgin Atlantic - (VS) with 30 monthly flights
  • American Airlines - (AA) with 30 monthly flights
  • British Airways - (BA) with 30 monthly flights
  • Delta Air Lines - (DL) with 17 monthly flights

Are Sea-Tac Airport to London (LON-All Airports) flight tickets cheaper when they're purchased at the last minute?
Booking last minute from SEA to London (LON-All Airports) can be hit-or-miss. It is possible to score a bargain, but you could also miss out entirely! If you'd prefer to play it safe and start planning early on, Expedia compares flight deals up to 12 months in advance. Just remember that not all airlines publish their prices that far in advance. Our suggestion? Check back often as updates are made regularly.

Explore a world of travel with Expedia

*Available to Expedia members.