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

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There are 6 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 39m
    £214–787

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

    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 9m
    £221–657

  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
    17h 49m
    £281–1,023

  4. Fly Seattle-Tacoma International Airport to Bristol Airport, train

    1. Fly from Seattle-Tacoma International Airport (SEA) to Bristol Airport (BRS)plane plane SEA - BRS
    2. Take the train from Bristol Temple Meads to Portsmouth & Southseatrain train
    17h 25m
    £404–735

  5. Fly Seattle-Tacoma International Airport to Birmingham Airport, train

    1. Fly from Seattle-Tacoma International Airport (SEA) to Birmingham Airport (BHX)plane plane SEA - BHX
    2. Take the train from Birmingham International to Winchestertrain train
    3. Take the train from Winchester to Portsmouth & Southseatrain train
    19h 11m
    £233–667

  6. 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
    16h 54m
    £284–1,137

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

Calendar59Weekly Planes
Duration11h 7mAverage Duration
Ticket£198Cheapest Price
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Questions & Answers

Map of how to get from Seattle to Portsmouth.ExpandLaunch map view
  • Distance: 4,867.4 mi
  • Duration: 14h 39m

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

Aer Lingus, Delta, and two other airlines fly from Seattle-Tacoma International Airport (SEA) to Southampton Airport (SOU) 4 times a day.

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