Cheap flights from St. Louis, MO to Hanoi, Vietnam
Flights starting at $514. Choose between Frontier Airlines, Spirit Airlines, or VietJet Air to find the best price.
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Tips to know when travelling to Hanoi
Cheapest one-way trip | $716 |
---|---|
Cheapest round-trip | $1,093 |
Average round-trip | $1,182 |
Includes rare itinerary | |
Most popular airline | Frontier Airlines |
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The most popular airlines for this route are Frontier Airlines, Spirit Airlines, VietJet Air, ZIPAIR, and Korean Air. St. Louis and Hanoi have 128 direct flights per week. When you arrive at Hanoi, consider visiting Hanoi's Old Quarter, and Halong Bay.
Check-in for a flight from St. Louis to Hanoi
Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
---|---|---|---|---|
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 |
VietJet Air | VJC | VJ | Yes | No |
ZIPAIR | TZP | ZG | Yes | No |
Korean Air | KAL | KE | Yes | 0 0 |
Weather in Hanoi
Average Weather
Month | Average monthly max temperature | Average monthly min temperature |
January | 20°C | 14°C |
February | 23°C | 16°C |
March | 26°C | 19°C |
April | 29°C | 22°C |
May | 32°C | 24°C |
June | 34°C | 26°C |
July | 33°C | 26°C |
August | 32°C | 25°C |
September | 31°C | 24°C |
October | 28°C | 22°C |
November | 26°C | 19°C |
December | 21°C | 15°C |
14 day forecast
Frequently asked questions
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