Cheap flights from St. Louis, MO to Sidney, MT
Flights starting at £156. Choose between Alaska Airlines, Cape Air, or Japan Airlines to find the best price.
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Tips to know when travelling to Sidney
Cheapest one-way trip | £156 |
---|---|
Cheapest round-trip | £283 |
Average round-trip | £699 |
Includes rare itinerary | |
Most popular airline | Alaska Airlines |
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The most popular airlines for this route are Alaska Airlines, Cape Air, Japan Airlines, and Qantas. St. Louis and Sidney have 9 direct flights per week.
Check-in for a flight from St. Louis to Sidney
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 |
Cape Air | KAP | 9K | Yes | No |
Japan Airlines | JAL | JL | No | 0 0 |
Qantas | QFA | QF | Yes | 0 0 |
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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