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Cheap SEA to LHR Flights

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

London

$395.56

$589.46

$751.76

$790.26

Southend-on-Sea

$823.16

Cheap SEA to LHR Flights

Question : Looking for the shortest flight from SEA to LHR?
Answer : British Airways can get you there in nine hours and 20 minutes. For example, if you were to leave Seattle at 1:45 PM PST, you would arrive in London at 7:05 AM GMT (remember, there is an eight-hour time difference).

Question : Over the coming months, which airline is getting their passengers to London Heathrow Airport (LHR) round-trip the cheapest?
Answer : Icelandair is the leader in keeping costs down for their passengers over the next three months. Bookings are being made at just $405, which is quite a deal when compared to the more expensive bookings of $11,309.

Question : Is this route your best bet for getting to London with minimal delays?
Answer : SEA to LHR currently scores 2 out of a possible 5 stars in promptness. This score combines both the number of delayed flights and total delay minutes. With 2 stars, you should feel rather worried about getting to London on time.

Question : If you’re booking SEA to LHR, how many different options of departure times do you have?
Answer : Of course the day of the week matters, but on average, five different flight times exist when you fly from SEA to LHR. The average route departing the United States currently has nine different flight times per day, so expect fewer choices than you're used to.

Question : Which airline has been on schedule from Seattle-Tacoma International Airport (SEA) to London Heathrow Airport (LHR) the most?
Answer : Delta Air Lines holds the best record for flights from SEA to LHR with an 88% on-time rate. Note that if they do have a delay, it usually lasts about 22 minutes.

Question : Is price more important than specific travel days for you?
Answer : The best day to fly on a budget this month is Thursday. Being flexible with your travel days garners even more savings during booking.

Question : What is the likelihood your flight will be delayed for this route?
Answer : Passengers are currently getting to their destination on schedule 70% of the time, which ranks in the 43rd percentile worldwide. When there is a delay, it averages less than half an hour.

Seattle to London 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 Seattle to London 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 London.

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 SEA to LHR flights that won’t make your bank account wince. Ready to temporarily leave behind Seattle 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 LHR 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.