Beginning of main content

Cheap Flights from London to Seattle from $353

Round Trip Icon
Trip Type
Flight 1
Flight 2
Flight 3
Flight 4
Flight 5

Search over 1,000,000 properties worldwide and 550 airlines worldwide.

Search over a million flights, hotels, packages, and more

No Expedia cancellation fee to change or cancel almost any hotel reservation.

Cheap LHR to SEA Flights

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Mon, Oct 28 - Tue, Oct 29
LHR
London
to
SEA
Seattle
$353

roundtrip

found 6 days ago

Open LHR to SEA flights search result page
Fri, Nov 8 - Sat, Nov 9
LHR
London
to
SEA
Seattle
$362

roundtrip

found 17 hours ago

Open LHR to SEA flights search result page
Mon, May 4 - Mon, May 4
LHR
London
to
SEA
Seattle
$364

roundtrip

found 14 hours ago

Open LHR to SEA flights search result page
Tue, Nov 19 - Tue, Nov 19
LHR
London
to
SEA
Seattle
$366

roundtrip

found 2 days ago

Open LHR to SEA flights search result page
Fri, Nov 15 - Fri, Nov 15
LHR
London
to
SEA
Seattle
$379

roundtrip

found 5 days ago

Open LHR to SEA flights search result page
Wed, Nov 13 - Wed, Nov 13
LHR
London
to
SEA
Seattle
$389

roundtrip

found 17 hours ago

Open LHR to SEA flights search result page
Mon, Nov 18 - Tue, Dec 24
LHR
London
to
SEA
Seattle
$391

roundtrip

found 2 days ago

Open LHR to SEA flights search result page
Fri, Mar 6 - Fri, May 1
LHR
London
to
SEA
Seattle
$404

roundtrip

found 17 hours ago

Open LHR to SEA flights search result page
Mon, Mar 9 - Tue, Mar 31
LHR
London
to
SEA
Seattle
$406

roundtrip

found 3 days ago

Open LHR to SEA flights search result page
Thu, Jan 9 - Wed, May 13
LHR
London
to
SEA
Seattle
$408

roundtrip

found 3 days ago

Open LHR to SEA flights search result page
Fri, Nov 1 - Sun, Nov 10
LHR
London
to
SEA
Seattle
$408

roundtrip

found 3 days ago

Open LHR to SEA flights search result page
Fri, Nov 15 - Mon, Nov 18
LHR
London
to
SEA
Seattle
$408

roundtrip

found 4 days ago

Open LHR to SEA flights search result page
Wed, Nov 13 - Thu, Nov 28
LHR
London
to
SEA
Seattle
$408

roundtrip

found 3 days ago

Open LHR to SEA flights search result page
Sun, Dec 8 - Mon, Dec 23
LHR
London
to
SEA
Seattle
$435

roundtrip

found 5 days ago

Open LHR to SEA flights search result page
Tue, Nov 26 - Sun, Dec 1
LHR
London
to
SEA
Seattle
$435

roundtrip

found 21 hours ago

Open LHR to SEA flights search result page
Mon, Oct 28 - Wed, Nov 13
LHR
London
to
SEA
Seattle
$437

roundtrip

found 6 days ago

Open LHR to SEA flights search result page
Wed, Oct 30 - Wed, Nov 20
LHR
London
to
SEA
Seattle
$549

roundtrip

found 6 days ago

Open LHR to SEA flights search result page
Tue, Feb 11 - Sat, Feb 22
LHR
London
to
SEA
Seattle
$598

roundtrip

found 2 days ago

Open LHR to SEA flights search result page
Fri, Jan 24 - Mon, Jan 27
LHR
London
to
SEA
Seattle
$1,336

roundtrip

found 6 days ago

Open LHR to SEA flights search result page
Tue, Aug 4 - Sun, Aug 16
LHR
London
to
SEA
Seattle
$4,163

roundtrip

found 1 day ago

Open LHR to SEA flights search result page

London to Seattle route information

Origin Airport Heathrow
Destination Airport Seattle - Tacoma Intl.
Airlines Serving Aer Lingus, Aeromexico, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, United, Virgin Atlantic
Flight Price $353
Distance 4,786 mi

London

LGW-Gatwick

$397.17

LCY-London City

$459.43

STN-Stansted

$1,304.34

Top Routes from London

Top Routes to Seattle

Cheap LHR to SEA Flights

  • How much is a plane ticket to Seattle (SEA) from London (LHR)?

    Cost can range anywhere from $394 to $12,120, prices for LHR to SEA do fluctuate a lot more than most routes from the United Kingdom. Prices are usually cheaper the further out you book.

  • How many flights are there per day from London to Seattle?

    Depending on the day of the week, the number of flight times will change, but on average there are four. You'll have more options on this route than most other routes departing the United Kingdom.

  • What is the cheapest day to fly to Seattle?

    Oct 24th has bookings (as of Sep 23rd) as cheap as $394. That comes in 64% below the average price for this route. Saving on booking fees gives you more money to spend on your trip.

  • Which airline has the least delays from London to Seattle?

    Booking with Delta Air Lines means you will arrive to Seattle pretty close to the time your ticket states. In fact, this timely airline has a 97% average for landing before the plane turns into a pumpkin. Of course, it never hurts to be prepared. If you're on Virgin Atlantic, be sure to sign up for the delay notifications to stay up to date with your flight's status.

  • Can I change the date of my flight?

    You sure can change your departure date and you may save money by changing it. The cheapest day to fly in October is Wednesday. Flexibility is key when booking travel to help keep costs down.

  • How long is the flight from LHR to SEA?

    If you're able to take the direct flight (which is offered by Virgin Atlantic), you will be able to leave LHR at 1:15 PM BST and get to SEA at 2:55 PM PDT (nine hours and 40 minutes). Remember, there is an eight-hour time difference.

  • What is the cheapest day to fly?

    The cheapest day to fly from London to Seattle is on Wednesday. If you are trying to save some money on your next trip look for flights on Wednesday.

London to Seattle Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from London to Seattle will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring Seattle.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with LHR to SEA flights that won’t make your bank account wince. Ready to temporarily leave behind London for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to SEA with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.