Cheap flights from Trondheim to Seattle, WA
Flights starting at $403. Choose between SAS, Alaska Airlines, or Norwegian to find the best price.
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Book your trip to arrive at Seattle–Tacoma International, or Kenmore Air Harbor Seaplane Base. The most popular airlines for this route are SAS, Alaska Airlines, Norwegian, Icelandair, and WestJet. Trondheim and Seattle have 298 direct flights per week.
Check-in for a flight from Trondheim to Seattle
Name | Carrier code | IATA Code | Passport needed during booking | |
---|---|---|---|---|
SAS | SAS | SK | No | |
Alaska Airlines | ASA | AS | No | |
Norwegian | NAX | DY | No | |
Icelandair | ICE | FI | Yes | |
WestJet | WJA | WS | No |
Online check-in is not available for these airlines.
Weather in Seattle
Average Weather
Month | Average monthly max temperature | Average monthly min temperature |
January | 7°C | 2°C |
February | 8°C | 1°C |
March | 10°C | 3°C |
April | 13°C | 4°C |
May | 18°C | 8°C |
June | 21°C | 10°C |
July | 25°C | 13°C |
August | 26°C | 14°C |
September | 22°C | 11°C |
October | 15°C | 7°C |
November | 10°C | 4°C |
December | 6°C | 1°C |
14 day forecast
Frequently asked questions
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