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SEA to HPH: distance & flight time
Seattle (Seattle Tacoma International Airport) → Haiphong (Cat Bi International Airport)
6,825 mi
10,983 km · 5,931 nm
13h 51m
estimated nonstop flight time
+14h
time difference · heading northwest
See live SEA→HPH fares Phone-only fares on this route — call free
Flight time details
6,825 miles nonstop takes roughly 13h 51m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time gain when reading arrival times on your ticket.
The two airports
- SEA — Seattle Tacoma International Airport · Seattle, United States
- HPH — Cat Bi International Airport · Haiphong, Vietnam
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near SEA
- RNT · Renton Municipal Airport5 mi away
- BFI · Boeing Field King County International Airport6 mi away
- TIW · Tacoma Narrows Airport18 mi away
- PWT · Bremerton National Airport21 mi away
Near HPH
- HAN · Noi Bai International Airport65 mi away
Frequently asked questions
How far is SEA from HPH?
The flight distance from Seattle (SEA) to Haiphong (HPH) is 6,825 miles (10,983 km, 5,931 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SEA to HPH?
A nonstop flight takes about 13h 51m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Seattle and Haiphong?
Haiphong is 14 hours ahead of Seattle.
What is the cheapest way to fly from SEA to HPH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SEA–HPH that never appear on search engines, with no booking fees.