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How to get fromSeattle to Portsmouthby plane, bus, or train

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There are 8 ways to get from Seattle to Portsmouth by plane, bus, or train

Select an option below to see step-by-step directions and to compare ticket prices and travel times in Rome2Rio's travel planner.

  1. Fly Seattle-Tacoma International Airport to London Heathrow Airport, bus

    best
    1. Fly from Seattle-Tacoma International Airport (SEA) to London Heathrow Airport (LHR)plane plane SEA - LHR
    2. Take the bus from Heathrow Central Bus Station to University of Portsmouthbus bus
    14h 55m
    £332–720

  2. Fly Seattle-Tacoma International Airport to London Gatwick Airport, train

    cheapest
    1. Fly from Seattle-Tacoma International Airport (SEA) to London Gatwick Airport (LGW)plane plane SEA - LGW
    2. Take the train from Gatwick Airport to Portsmouth & Southseatrain train
    16h 49m
    £178–417

  3. Fly Seattle-Tacoma International Airport to Southampton Airport

    1. Fly from Seattle-Tacoma International Airport (SEA) to Southampton Airport (SOU)plane plane SEA - SOU
    18h 32m
    £250–820

  4. Train to Vancouver International Airport, fly to London Gatwick Airport, train

    1. Take the train from Seattle to Vancouvertrain train
    2. Fly from Vancouver International Airport (YVR) to London Gatwick Airport (LGW)plane plane YVR - LGW
    3. Take the train from Gatwick Airport to Portsmouth & Southseatrain train
    17h 54m
    £372–951

  5. Train to Vancouver International Airport, fly to London Heathrow Airport, bus

    1. Take the train from Seattle to Vancouvertrain train
    2. Fly from Vancouver International Airport (YVR) to London Heathrow Airport (LHR)plane plane YVR - LHR
    3. Take the bus from Heathrow Central Bus Station to University of Portsmouthbus bus
    18h 55m
    £316–974

  6. Fly Seattle-Tacoma International Airport to Manchester Airport, train

    1. Fly from Seattle-Tacoma International Airport (SEA) to Manchester Airport (MAN)plane plane SEA - MAN
    2. Take the train from Manchester Piccadilly to London Eustontrain train
    3. Take the train from London Waterloo to Portsmouth & Southseatrain train
    18h 28m
    £232–525

  7. Fly Seattle-Tacoma International Airport to Luton Airport, train

    1. Fly from Seattle-Tacoma International Airport (SEA) to Luton Airport (LTN)plane plane SEA - LTN
    2. Take the train from Luton Airport Parkway to West Hampstead Thameslinktrain train
    3. Take the train from London Waterloo to Portsmouth & Southseatrain train
    16h 45m
    £234–733

  8. Fly King County International Airport to London Heathrow Airport, bus

    1. Fly from King County International Airport (BFI) to London Heathrow Airport (LHR)plane plane BFI - LHR
    2. Take the bus from Heathrow Central Bus Station to University of Portsmouthbus bus
    17h 39m
    £262–820

Seattle-Tacoma International Airport (SEA) to London Heathrow Airport (LHR) flights

Calendar42Weekly Planes
Duration10h 50mAverage Duration
Ticket£184Cheapest Price
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Comparing Your Travel Options

Map of how to get from Seattle to Portsmouth.ExpandLaunch map view
  • Distance: 4,867.4 mi
  • Duration: 14h 55m

What companies run services between Seattle, WA, USA and Portsmouth, England?

Aer Lingus, Delta, and seven other airlines fly from Seattle-Tacoma International Airport (SEA) to Southampton Airport (SOU) twice daily.

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