Cheap flights from Sidney, MT to Portland, OR
Flights starting at $233. Choose between Cape Air, Alaska Airlines, or Spirit Airlines to find the best price.
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The most popular airlines for this route are Cape Air, Alaska Airlines, Spirit Airlines, Allegiant Air, and Frontier Airlines. Sidney and Portland have 55 direct flights per week.
Check-in for a flight from Sidney to Portland
Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
---|---|---|---|---|
Cape Air | KAP | 9K | Yes | No |
Alaska Airlines | ASA | AS | No | Opens 24 days before flight Closes 1 hours before flight |
Spirit Airlines | NKS | NK | No | Opens 24 days before flight Closes 1 hours before flight |
Allegiant Air | AAY | G4 | 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 |
Weather in Portland
Average Weather
Month | Average monthly max temperature | Average monthly min temperature |
January | 8°C | 2°C |
February | 8°C | 2°C |
March | 11°C | 3°C |
April | 14°C | 5°C |
May | 19°C | 8°C |
June | 23°C | 10°C |
July | 28°C | 13°C |
August | 28°C | 14°C |
September | 24°C | 12°C |
October | 17°C | 8°C |
November | 10°C | 4°C |
December | 7°C | 2°C |
14 day forecast
Frequently asked questions
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Airports near Sidney
- Minot International
- Williston Basin International Airport
- Sidney–Richland Municipal
- Dawson Community
- Dickinson Theodore Roosevelt Regional
- L. M. Clayton
- Glasgow