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

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      Travellers and cabin class, 1 Adult, Economy

      Compare Seattle / Tacoma International to London Stansted flight deals

      Find the cheapest month or even day of the year to fly to London Stansted

      Book the best London Stansted fare with no extra fees

      Flight deals from Seattle / Tacoma International to London Stansted

      Looking for a cheap last-minute deal or the best return flight from Seattle / Tacoma International Airport to London Stansted Airport? If you want to travel next month, return fares start from $895. Find the lowest prices on one-way and return tickets right here.
      London.$895 per passenger.Departing Fri, 13 Nov, returning Fri, 20 Nov.Return flight with Lufthansa and Ryanair.Outbound indirect flight with Lufthansa, departs from Seattle / Tacoma International on Fri, 13 Nov, arriving in London Stansted.Inbound indirect flight with Ryanair, departs from London Stansted on Fri, 20 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $895, select.
      London.$1,112 per passenger.Departing Fri, 27 Nov, returning Mon, 14 Dec.Return flight with Icelandair and Ryanair.Outbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Fri, 27 Nov, arriving in London Stansted.Inbound indirect flight with Ryanair, departs from London Stansted on Mon, 14 Dec, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,112, select.
      London.$1,238 per passenger.Departing Tue, 23 Mar, returning Tue, 30 Mar.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Seattle / Tacoma International on Tue, 23 Mar, arriving in London Stansted.Inbound indirect flight with Turkish Airlines, departs from London Stansted on Tue, 30 Mar, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,238, select.
      London.$1,240 per passenger.Departing Wed, 28 Oct, returning Wed, 11 Nov.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Seattle / Tacoma International on Wed, 28 Oct, arriving in London Stansted.Inbound indirect flight with Turkish Airlines, departs from London Stansted on Wed, 11 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,240, select.
      London.$1,242 per passenger.Departing Thu, 14 Jan, returning Wed, 27 Jan.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Seattle / Tacoma International on Thu, 14 Jan, arriving in London Stansted.Inbound indirect flight with Turkish Airlines, departs from London Stansted on Wed, 27 Jan, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,242, select.
      London.$1,242 per passenger.Departing Wed, 21 Oct, returning Fri, 30 Oct.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Seattle / Tacoma International on Wed, 21 Oct, arriving in London Stansted.Inbound indirect flight with Turkish Airlines, departs from London Stansted on Fri, 30 Oct, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,242, select.
      London.$1,243 per passenger.Departing Wed, 10 Feb, returning Tue, 16 Feb.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Seattle / Tacoma International on Wed, 10 Feb, arriving in London Stansted.Inbound indirect flight with Turkish Airlines, departs from London Stansted on Tue, 16 Feb, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,243, select.
      London.$1,243 per passenger.Departing Thu, 19 Aug, returning Wed, 1 Sep.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Seattle / Tacoma International on Thu, 19 Aug, arriving in London Stansted.Inbound indirect flight with Turkish Airlines, departs from London Stansted on Wed, 1 Sep, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,243, select.
      London.$1,244 per passenger.Departing Wed, 7 Apr, returning Tue, 13 Apr.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Seattle / Tacoma International on Wed, 7 Apr, arriving in London Stansted.Inbound indirect flight with Turkish Airlines, departs from London Stansted on Tue, 13 Apr, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,244, select.
      London.$1,249 per passenger.Departing Mon, 23 Aug, returning Tue, 31 Aug.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Seattle / Tacoma International on Mon, 23 Aug, arriving in London Stansted.Inbound indirect flight with Turkish Airlines, departs from London Stansted on Tue, 31 Aug, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,249, select.
      London.$1,250 per passenger.Departing Wed, 24 Mar, returning Fri, 2 Apr.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Seattle / Tacoma International on Wed, 24 Mar, arriving in London Stansted.Inbound indirect flight with Turkish Airlines, departs from London Stansted on Fri, 2 Apr, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,250, select.
      London.$1,250 per passenger.Departing Wed, 24 Feb, returning Wed, 3 Mar.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Seattle / Tacoma International on Wed, 24 Feb, arriving in London Stansted.Inbound indirect flight with Turkish Airlines, departs from London Stansted on Wed, 3 Mar, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,250, select.
      London.$1,253 per passenger.Departing Wed, 1 Sep, returning Wed, 15 Sep.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Seattle / Tacoma International on Wed, 1 Sep, arriving in London Stansted.Inbound indirect flight with Turkish Airlines, departs from London Stansted on Wed, 15 Sep, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,253, select.
      London.$1,255 per passenger.Departing Tue, 2 Mar, returning Tue, 4 May.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Seattle / Tacoma International on Tue, 2 Mar, arriving in London Stansted.Inbound indirect flight with Turkish Airlines, departs from London Stansted on Tue, 4 May, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,255, select.
      London.$1,255 per passenger.Departing Mon, 3 May, returning Wed, 12 May.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Seattle / Tacoma International on Mon, 3 May, arriving in London Stansted.Inbound indirect flight with Turkish Airlines, departs from London Stansted on Wed, 12 May, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,255, select.
      London.$1,255 per passenger.Departing Tue, 20 Jul, returning Tue, 31 Aug.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Seattle / Tacoma International on Tue, 20 Jul, arriving in London Stansted.Inbound indirect flight with Turkish Airlines, departs from London Stansted on Tue, 31 Aug, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,255, select.
      How did we find these deals? The deals you see here are the lowest prices for flight tickets from Seattle / Tacoma International to London Stansted found in the last 4 days, and are subject to change and availability.

      Find the cheapest month to fly from Seattle / Tacoma International to London Stansted

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle / Tacoma International to London Stansted flights are currently cheapest in November.
      Oct
      from $1,242
      Nov
      from $895
      Dec
      from $1,297
      Jan
      from $1,242
      Feb
      from $1,243
      Mar
      from $1,238
      Apr
      from $1,244
      May
      from $1,255
      Jun
      from $1,511
      Jul
      from $2,059
      Aug
      from $1,249
      Sep
      from $1,253

      Seattle / Tacoma International to London Stansted: Alternative routes

      Compare routes from Seattle / Tacoma International to London below. You may find an airport to fly into that's cheaper, faster, or easier than London Stansted.

      London City

      12km from central London
      Closest
      from $1,107
      Search flights

      London Heathrow

      23km from central London
      from $866
      Search flights

      London Gatwick

      40km from central London
      Cheapest
      from $861
      Search flights

      London Luton

      45km from central London
      from $1,019
      Search flights

      London Stansted

      49km from central London
      from $895
      Search flights

      London Southend

      57km from central London
      from $1,496
      Search flights

      Seattle to London: Flight information

      The things to know before you go.
      Cheapest flight found$895
      Cheapest month to flyNovember

      Finding cheap flights from Seattle / Tacoma International to London Stansted: Frequently asked questions

      The best price we found for a return flight from Seattle / Tacoma International to London Stansted is $895. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
      Currently, there are no airlines that fly direct from Seattle / Tacoma International to London Stansted. But we found flights with one or more stops from $899.
      As of October 2026, there are no flights flying from Seattle / Tacoma International to London Stansted.
      The cheapest month to fly from Seattle / Tacoma International to London Stansted is usually November.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Seattle / Tacoma International Airport to London Stansted Airport on Friday, 13 November 2026.
      No airlines currently offer direct flights between Seattle / Tacoma International Airport and London Stansted Airport. Most routes have one or more stops.
      We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to London Stansted but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

      We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to London is around 40 days in advance, so don’t leave your flight to the last minute.

      Currently, Lufthansa offers the cheapest flight tickets to London Stansted.

      Flying from Seattle / Tacoma International Airport (SEA) to London Stansted Airport (STN): what you need to know

      • London is eight hours ahead of Seattle and is in the UTC+0 timezone.

      • Leave plenty of time to catch your SEA to STN flight. It's generally best to arrive at least two hours before international departures and an hour ahead for domestic flights.

      • During popular months such as July, it's best to get to the airport earlier than usual. Plan to arrive two hours before domestic departures and four hours ahead for an international flight when you fly during peak periods in general.

      • We make it simple to book a flight with a stopover. To see all your options for tickets from Seattle / Tacoma International Airport to London Stansted Airport, uncheck 'Direct flights only.' Then, pick a flight offering a stop long enough to explore your chosen city. Top stopovers between SEA and STN include:

        • Amsterdam Schiphol Airport

        • Dublin Airport

        • Reykjavik Keflavik Airport

      How to find the cheapest flights from Seattle / Tacoma International Airport (SEA) to London Stansted Airport (STN)

      • The lowest price we've seen for a one-way Seattle / Tacoma International Airport to London Stansted Airport flight is $382. A round-trip ticket is currently $895. Depending on the availability and when you book, these fares may change.

      • To score cheap tickets from SEA to STN, book early. Airlines tend to offer their most competitively priced fares when flights are first made available.

      • The 'Whole month' search tool shows you the cheapest flights from Seattle / Tacoma International Airport to London Stansted Airport across each month. It's a good way to snap up a bargain if your trip dates aren't set in stone.

      • Picking up cheap flights from SEA to STN is a cinch with Price Alerts. Simply set up one of these automatic alerts and we'll let you know as soon as a new discounted fare appears.

      • Discover the ideal flight for you with the help of the filters. To see the 'Fastest,' 'Cheapest' or 'Best' flights from Seattle / Tacoma International Airport to London Stansted Airport, use the 'Sort by' function. You can also filter results by departure and arrival times, airline, and number of stops.

      Handy information about Seattle / Tacoma International Airport (SEA)

      • Seattle / Tacoma International Airport scores top marks for its on-time performance. 80% of flights that take off from SEA land on time.

      • To reach Seattle / Tacoma International Airport from central Seattle, it'll take about 25 minutes if you're travelling by car. This depends on traffic though. It's approximately 23 kilometres from the airport to the city centre.

      • Catching public transport? You can expect a journey time of around 35 minutes.

      • Looking for a convenient hotel close to SEA? If you're catching an early flight from Seattle / Tacoma International Airport to London Stansted Airport, these stays will have you sleeping moments from check-in:

      Arriving at London Stansted Airport (STN)

      Getting from London Stansted Airport (STN) to central London

      • London Stansted Airport to central London has a drive time of around 1 hour 5 minutes. It's approximately 56 kilometres away.

      • It'll take around 45 minutes if you're using public transport.

      When to fly to London Stansted Airport (STN)

      • The quietest month for a flight from Seattle / Tacoma International Airport to London Stansted Airport is March, while August is the most popular. Choose the ideal time to visit London based on whether you prefer a laid-back vibe or a more bustling atmosphere.

      • Lock in your flight from Seattle / Tacoma International Airport to London Stansted Airport for July if you want to visit London during its warmest month. You can expect temperatures of between 11ºC (52ºF) and 26ºC (79ºF).

      • Look for cheap tickets from SEA to STN in January if you like travelling in cooler conditions. Temperatures are at their lowest around then, ranging between 0ºC (32ºF) and 9ºC (48ºF) on average.

      Explore more of the United Kingdom

      • You've seen London, now it's time to discover other corners of the United Kingdom. Journey about 257 kilometres north-west to Manchester to check off its top sights. From Manchester United Museum & Stadium Tour to The Homes of Football and Museum of Science and Industry, there's plenty to keep you busy.

      • Birmingham is another must-experience destination in the United Kingdom and is around 161 kilometres north-west of London. No journey is complete without dropping by Birmingham Museum & Art Gallery, Birmingham Hippodrome Theatre and Bournville Experience.

      Plan smart, explore more

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      Plan the rest of your trip from Seattle to London

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.