Cheap flights from Seattle, WA to Belleville, IL
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Tips to know when travelling to Belleville
Most popular airline | Allegiant Air |
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Travelers usually depart from Seattle–Tacoma International, or Kenmore Air Harbor Seaplane Base when they travel from Seattle to Belleville. The most popular airlines for this route are Allegiant Air, Alaska Airlines, Frontier Airlines, Spirit Airlines, and Sun Country Airlines. Seattle and Belleville have 101 direct flights per week.
Check-in for a flight from Seattle to Belleville
Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
---|---|---|---|---|
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 |
Frontier Airlines | FFT | F9 | 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 |
Sun Country Airlines | SCX | SY | Yes | No |
Weather in Belleville
Average Weather
Month | Average monthly max temperature | Average monthly min temperature |
January | 3°C | -3°C |
February | 6°C | -2°C |
March | 13°C | 3°C |
April | 18°C | 8°C |
May | 23°C | 14°C |
June | 29°C | 19°C |
July | 30°C | 20°C |
August | 29°C | 19°C |
September | 26°C | 16°C |
October | 19°C | 10°C |
November | 12°C | 3°C |
December | 7°C | 0°C |
14 day forecast
Frequently asked questions
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