
Cheap Flights from Seattle to the United Kingdom
Cheapest round-trip prices found by our users on KAYAK in the last 5 daysBook Cheap Seattle to the United Kingdom Plane Tickets
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KAYAK's insights & trends for Seattle to the United Kingdom flights
Get data-powered insights and trends into flights from Seattle to the United Kingdom to help you find the cheapest flights, the best time to fly and much more.
What is the cheapest Seattle to the United Kingdom flight route?
The cheapest ticket to the United Kingdom from Seattle found in the last 5 days was to London, at $632 round-trip. The most popular route is from Seattle (SEA) to London Heathrow Airport (LHR), and the cheapest round-trip airline ticket found on this route in the last 5 days was $632.
What is the cheapest time of day to fly to the United Kingdom?
The cheapest time of day to fly to the United Kingdom is generally in the afternoon, when round-trip flights cost $946 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to the United Kingdom is generally at night, which is peak travel time and where the average cost of a ticket is $981.
Can I save money by flying with a layover from Seattle to the United Kingdom?
No, with an average price for the route of $1,003, prices are generally cheapest when you fly direct.
What is the cheapest month to fly from Seattle to the United Kingdom?
The cheapest month for flights from Seattle to the United Kingdom is January, when tickets cost $680 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $1,222 and $1,050 respectively.
What’s the cheapest day of the week to fly from Seattle to United Kingdom?
Your flight ticket price will generally be cheaper if you fly to United Kingdom on a Monday and more expensive on a Friday. On your return trip to Seattle, you should consider flying back on a Monday, and avoid Fridays for better deals.
How far in advance should I book a flight from Seattle to the United Kingdom?
To get a below average price on the flight from Seattle to the United Kingdom, you should book around 3 weeks before departure, which saves you about 22% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.
Which airlines fly non-stop between Seattle and United Kingdom?
There are 10 airlines that fly nonstop from Seattle to the United Kingdom. They are: American Airlines, KLM, Alaska Airlines, Aer Lingus, Air France, Scandinavian Airlines, Delta, Finnair, Virgin Atlantic and British Airways. The cheapest price of all airlines flying this route was found with Aer Lingus at $535 for a round-trip flight to London Heathrow Airport (LHR). On average, Finnair offers the best prices for nonstop flights between Seattle and United Kingdom.
Which airlines fly most frequently between Seattle and United Kingdom?
Seattle and United Kingdom are connected by different airlines. The airlines that fly that route the most regularly are Alaska Airlines (21 flights per week), Air France (18 flights per week), and American Airlines (14 flights per week).
How long does a flight from Seattle to the United Kingdom take?
The duration of a flight to the United Kingdom depends on your arrival airport. The shortest routes to the United Kingdom from Seattle are to Glasgow, which takes 10h 15m, Edinburgh, which takes 10h 20m, and Manchester, which takes 12h 10m.
Which cabin class options are there for flights between Seattle and United Kingdom?
There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.
What’s the earliest departure time from Seattle to the United Kingdom?
The earliest flight from Seattle to the United Kingdom departs at 1:30 pm, landing in London at 6:45 am.
What’s the latest departure time from Seattle to the United Kingdom?
If you prefer to fly at night, the latest flight from Seattle to the United Kingdom jets off at 9:50 pm and lands in London at 3:35 pm.
Good to know
Low season | January |
|---|---|
High season | July |
Cheapest flight | $257 |
Flights from Seattle to the United Kingdom: the best tips from KAYAK users
FAQs - booking United Kingdom flights
Top tips for finding cheap flights to the United Kingdom
Reviews of the top 5 airlines serving from Seattle to the United Kingdom
Was OK but my seat was way in the back(on a premium economy itinerary)
Was OK but my seat was way in the back(on a premium economy itinerary)
Alaska did a great job of accommodating my needs and treating me fairly. I appreciate their willingness to smile and be caring.
Flight was way over-booked and the turn over too fast from the last flight to the next. We had delays both ways due to storms -- not our trip but the one the plane had taken before us. Just seemed like poor time management. Shouldn't there be a slight buffer built into the schedule? And every seat was full to the detriment of loading.
Delayed 2-3 hours. We boarded one plane, then had to deplane, and board another. Got to Houston 2 hours after the scheduled time at 2 am CST.
Other than delays by two-three hours it was good.
We were delayed a bit due to late arrival at SeaTac. All was well until we reached Dallas and suddenly a weather storm cause the air traffic control people to stop landing in Dallas so we eventually diverted to Oklahoma City due to fuel concerns. We were never off the plane in Oklahoma City, but just waited for refueling and an opening to go onto Dallas. They were pretty clear most of the time about what was going on how much time was going to be required for this problem to resolve. They were honest about not knowing the details yet. That actually is helpful to me.
Healthier snack options in first class. Offer fruits, proteins, etc
I was worried about traveling with my mom with her accessibility requirements but they were able to accomodate and made it more pleasant to fly.
It was a good experience because it was unremarkable. The exception was we were an hour delayed.
Room is great! Excellent value. Boarding & service extremely good. Food was the worst I’ve ever had on a plane.
I somehow thought my food preferences was saved to my account— everything had dairy and couldn’t eat anything.
Comfortable seats. Nice service online. Short flight, so not a lot of time to enjoy.
The flight was done by SkyWest only WIFI no entertainment center are available on the CRJ
Everything worked smoothly, never had a concern with the flight from start to finish.
My flight was delayed by 4 hours in 30 minute increments. The gate agents were amazing but the communication was not. We were told that there was a maintenance issue but they didn't know what it was. That didn't inspire confidence. Then they said they found it and it was fixed and the pilot just needed to sign off. Then the pilot needed to talk to the other pilot from the arriving flight and we'd be fine. Then we were waiting for the pilot to call back. Then the maintenance issue wasn't fixed. Then they decided we were getting a new plane (why didn't they decide this earlier??). Fine. But then they announced we were changing gates AND terminals. And we were boarding in 20 minutes. So we all had to run to the new terminal gate. We could have taken off at that time, but we then had to wait for all the people who rebooked on a different flight to book this flight again. That took 30+ minutes because there was only one gate agent. When everyone ditched this flight, I saw it as an opportunity to upgrade to comfort. Delta, the greedy jerks they are, charged me $121. After their delay, their fault, their issues, couldn't even discount an upgrade. They only handed out $12 meal vouchers for the delay. I can't even get a snack from starbucks for that.
Love me some Delta. One of the few airlines to recognize and support veterans. Easy boarding, flight was on time and arrived early and the flight attendants were excellent on this flight.
We sat on the runway for over an hour before departure. That was unwelcome.
The Boarding process was great. Particularly since my wife and I require assistance. The flight attendants were amazing. We travel frequently; they honestly were a cut above. 😀
Crew was nice, meal was good. Entertainment had to be rebooted 3 times and still did not work. Turns out there was residue on screen, it needed to be cleaned to prevent the touchscreen buttons from continuously activating. I had entertainment for the last 45 minutes of a 5 hour 45 minute flight. Really unacceptable for first class. Flight attendent indicated your cleaning solution creates this problem. Seems as if this is widely known, you should be using a different product or cleaning better. Really really disappointing which simply added to the wi fi on your planes with reliably never ever works.
The crew members were great. The food was good. Entertainment was average - Could use a wider and better selections of movies and series.
Selection of movies didn't include recent box office hits. Food was average not great. English sparkling wine is not drinkable. Otherwise, everything was great.
Check in at the desk was very slow pus Security, although not Virgin issue at JFK was a nightmare. 50 minuet wait no time to explore airport and get last minuet gifts. total wait 1.5hours
Great staff great experience, made a 2 hour delay very bearable
I was my pleasure to fly virgin on my birthday for my first solo trip ever 🫶🏼
Overall, flight was excellent but check in was very slow for Premium Economy. Economy queue was shorter but we weren't allowed to use it.
The crew was excellent as ever on Virgin. The special meal was poor unfortunately. More significantly when we arrived at Manchester Airport there was no air bridge provided and we had to exit the plane down a rickety stair case. This is unacceptable for a transatlantic flight. Whilst I understand that this is the airport’s fault at the end of the day the airline is responsible for our transportation and needs to do something.
Super friendly and helpful staff, from check-in desk to cabin crew.
Good overall. Cannot fault the airlines. I have had better entertainment systems before ie ice in Emirates but it was not too bad. Food was decent and staff were friendly.
Miami airport needs more thorough signage. It was a long walk from my transport point to the check in desk,
i saved my points for more than 10 years in anticipation of treating myself to an upper class fight to and from london on virgin atlantic. i was shocked to find what you consider “upper class” on the dreamliner. it was, at best, a mediocre business class accommodation. it was tight and not that comfortable, with nearly no personal storage. everything was cramped and just generally disappointing. once i lucked into a 1st class upgrade to europe on lufthansa - a magical experience that found me reluctant to sleep, lest i deprive myself the joy of their setup. i expected something similar from virgin atlantic, but i could not have been more wrong. it will be the same arrangement on my flight home, but at least i know what (not) to expect. to be clear, this is only in reaction to the physical accommodations. your people were, and always are fantastic.
Movies were old and third rate. Very poor on a seven hour flight. Food was OK but not business class caliber
Although the flight from JFK to Keflavik is not inexpensive, Iceland Air offers nothing but water, no soft drinks, to passengers without a charge. The seats are uncomfortable, there is no leg room, and there was no available internet to purchase.
I had no idea that my ticket only paid for my right to get on the plane. They charged me $130 for my carry-on bag because it was 1 inch too big she claimed but it wasn’t! Then they wanted another fee for everything. I had no idea that Icelandair had changed to such a bargain basement airline. I was very disappointed.
Screen didn't work, and neither did the button to tilt the seat even though the seat was comfortable
The staff was kind and helpful. There was no food, and you needed to bring your own earphones to use the entertainment, which I didn’t know.
Seat was hard and uncomfortable and the temperature too warm and uncomfortable.
Everything was good. Only issue comes from being vegan and flying. The food options are super limited.
Overall good for an economy fare. IMO the movie selection could be improved. Great that you can now connect bluetooth headphones to the entertainment system.
7 hours 15 min flight from SEA to Iceland with no inflight entertainment and no power to charge your own devices, also no meal service, not even any snacks/cookies. You have to buy food and the options are extremely limited (i.e. ham and cheese sandwich and spicy cup noodles). I didn't think Iceland air was a budget airline, maybe I was wrong, the cost of the ticket didn't feel like it though.
Very nice flight, easy connections in Keflavík, and friendly crew.
Meh. Lived the seat. The entertainment unit did not work and had to be reset 3 times. Service was SLOW taking over 90 min to be served. Crew forgot about my meal. Chicken was dry and almost inedible.
Flying on the Boeing 787 from Seattle to London was everything that I expected. Every thing was great.
Moved me away from my family and refused to fix it.
Connection at Hethrow was horrible..We couldn't get out of the plane for an hour as they were buying people to the airport and there were not enough busses. We had 2 and half hf between flights so it was very tight. After departing plane we had to go thru security again. People with less time in between connections missed their flights
Captain sick. Unable to get replacement so delayed me 30 hours, many others delayed 54 hours. TOTALLY DESTROYED ALL MY PLANS, including lost my rental car which would now cost over 5 times what I paid so stuck with buses n trains... lost hotel reservations.... HORRIBLE!!!
The BA business class cabin is excellent,very comfortable for sleeping but the service could be improved.
The flight from Seattle was delayed, which made me miss my connection to Florence. I was re-booked NINE HOURS LATER!!! That’s basically a vacation day lost. British Airways needs to partner with other airlines when possible to get a more realistic travel time, if delays occur. I realize there aren’t many flights to Florence from London, so I would book differently were I to return. The actual flight from Seattle was very comfortable and the crew was great, no faults there. I enjoy British Airways, this was an anomaly.
Could have done with a 2nd round of drinks even if it was only to distribute bottled water
The second leg of my flight unexpectedly got canceled. I was stuck at the airport for the whole day and instead of flying out that morning I flew out in the evening. For some of my fellow passengers it was the second cancellation and their original flight was supposed to go out the day before. There was no reason given though getting rebooked was quick even though I would have preferred if I would have been on one of the earlier flights that day. Compensation was a £10 voucher for some food at the airport. I eventually arrived without further incident but but due to the cancellation, it was one of my more frustrating travels of my life.
Due to a cyber attack at the SeaTac airport ALL of the airport computers at the airport were down. This seriously impacted every airline at the airport and the resulted in our flight leaving a hour later than scheduled. This delay caused us to miss our connecting flight from Heathrow to Edinburgh. I was amazed to have British Airways staff meet us at the gate as we left our flight. They quickly provided us with new boarding passes for a flight going to Edinburgh later the same day. Problems sometimes happen but they handled the situation in first class style.