Cheap flights from Allentown, PA to St. Louis, MO
Flights starting at $105. Choose between Allegiant Air, Frontier Airlines, or Spirit Airlines to find the best price.
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The most popular airlines for this route are Allegiant Air, Frontier Airlines, Spirit Airlines, United Airlines, and Southern Airways Express. Allentown and St. Louis have 68 direct flights per week.
Check-in for a flight from Allentown to St. Louis
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 |
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 |
United Airlines | UAL | UA | Yes | No |
Southern Airways Express | FDY | 9X | Yes | No |
Weather in St. Louis
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 | 24°C | 14°C |
June | 29°C | 19°C |
July | 31°C | 21°C |
August | 30°C | 20°C |
September | 27°C | 16°C |
October | 20°C | 10°C |
November | 12°C | 3°C |
December | 7°C | 0°C |
14 day forecast
Frequently asked questions
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Airports near Allentown
- John F. Kennedy International
- Newark Liberty International
- LaGuardia
- Philadelphia International
- Baltimore–Washington International
- Washington Dulles International
- New York Stewart International Airport
- Ronald Reagan Washington National
- Long Island MacArthur
- Lehigh Valley International