Beginning of main content
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.

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





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, 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.