Cheap flights from Chicago, IL to Sidney, MT
Choose between Cape Air, Frontier Airlines, or Allegiant Air to find the best price
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Tips to know when travelling to Sidney
Cheapest nonstop round-trip | £459 |
---|---|
Most popular airline | Cape Air |
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Travelers usually depart from O Hare International, Chicago Midway International, or Chicago Rockford International when they travel from Chicago to Sidney. The most popular airlines for this route are Cape Air, Frontier Airlines, Allegiant Air, Alaska Airlines, and Spirit Airlines. Chicago and Sidney have 25 direct flights per week.
Check-in for a flight from Chicago to Sidney
Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
---|---|---|---|---|
Cape Air | KAP | 9K | Yes | No |
Frontier Airlines | FFT | F9 | 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 |
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 |
Weather in Sidney
Average Weather
Month | Average monthly max temperature | Average monthly min temperature |
January | -3°C | -12°C |
February | -3°C | -12°C |
March | 4°C | -5°C |
April | 11°C | 0°C |
May | 18°C | 7°C |
June | 25°C | 13°C |
July | 29°C | 17°C |
August | 28°C | 16°C |
September | 23°C | 11°C |
October | 13°C | 3°C |
November | 4°C | -4°C |
December | -3°C | -10°C |
14 day forecast
Frequently asked questions
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Airports near Chicago
- O Hare International
- Chicago Midway International
- General Mitchell International
- Gerald R. Ford International
- Dane County Regional
- General Wayne A. Downing Peoria International
- Chicago Rockford International
- South Bend International
- Fort Wayne International
- Quad City International