Cheap flights from Portland, ME to Seattle, WA
Flights starting at $148. Choose between Alaska Airlines, Frontier Airlines, or United Airlines to find the best price.
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Cheapest one-way trip | $148 |
---|---|
Cheapest round-trip | $472 |
Includes rare itinerary | |
Most popular airline | Alaska Airlines |
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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 Alaska Airlines, Frontier Airlines, United Airlines, BREEZE, and Spirit Airlines. Portland and Seattle have 149 direct flights per week.
Check-in for a flight from Portland to Seattle
Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
---|---|---|---|---|
Alaska Airlines | ASA | AS | No | Opens 24 days before flight Closes 1 hours before flight |
Frontier Airlines | FFT | F9 | No | Opens 24 days before flight Closes 1 hours before flight |
United Airlines | UAL | UA | Yes | No |
BREEZE | MX | No | No | |
Spirit Airlines | NKS | NK | No | Opens 24 days before flight Closes 1 hours before flight |
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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