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Cheap Flights from St Louis to Hanoi

Compare St Louis to Hanoi flight deals

Find the cheapest month or even day of the year to fly to Hanoi

Book the best Hanoi fare with no extra fees

Flight deals from St Louis to Hanoi

Looking for a cheap last-minute deal or the best return flight from St Louis Airport to Hanoi Airport? If you want to travel next month, return fares start from Rs352,420. Find the lowest prices on one-way and return tickets right here.
Hanoi.Rs161,332 per passenger.Departing Wed, 26 Aug.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Wed, 26 Aug, arriving in Hanoi.Price includes taxes and charges.From Rs161,332, select.
Hanoi.Rs167,755 per passenger.Departing Tue, 20 Oct.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Tue, 20 Oct, arriving in Hanoi.Price includes taxes and charges.From Rs167,755, select.
Hanoi.Rs168,538 per passenger.Departing Tue, 2 Mar.One-way flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from St Louis on Tue, 2 Mar, arriving in Hanoi.Price includes taxes and charges.From Rs168,538, select.
Hanoi.Rs170,189 per passenger.Departing Fri, 11 Sep.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Fri, 11 Sep, arriving in Hanoi.Price includes taxes and charges.From Rs170,189, select.
Hanoi.Rs176,272 per passenger.Departing Sun, 1 Nov.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Sun, 1 Nov, arriving in Hanoi.Price includes taxes and charges.From Rs176,272, select.
Hanoi.Rs201,549 per passenger.Departing Tue, 14 Jul.One-way flight with ANA (All Nippon Airways).Outbound indirect flight with ANA (All Nippon Airways), departs from St Louis on Tue, 14 Jul, arriving in Hanoi.Price includes taxes and charges.From Rs201,549, select.
Hanoi.Rs1,036,714 per passenger.Departing Wed, 6 Jan.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from St Louis on Wed, 6 Jan, arriving in Hanoi.Price includes taxes and charges.From Rs1,036,714, select.

Find the cheapest month to fly from St Louis to Hanoi

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like St Louis to Hanoi flights are currently cheapest in August.
Jul
from Rs201,549
Aug
from Rs161,332
Sep
from Rs170,189
Oct
from Rs167,755
Nov
from Rs176,272
Dec
Find prices
Jan
from Rs1,036,714
Feb
Find prices
Mar
from Rs168,538
Apr
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May
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Jun
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St Louis to Hanoi: Alternative routes

Compare routes from St Louis to Hanoi below. You may find an airport to fly into that's cheaper, faster, or easier than Hanoi.

Hanoi

21km from central Hanoi
ClosestCheapest
from Rs161,332
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St Louis to Hanoi: Flight information

The things to know before you go.
Cheapest flight foundRs161,332
Cheapest month to flyAugust

Finding cheap flights from St Louis to Hanoi: Frequently asked questions

The best price we found for a return flight from St Louis to Hanoi is Rs325,851. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from St Louis to Hanoi. But we found flights with one or more stops from Rs325,851.
As of July 2026, there are no flights flying from St Louis to Hanoi.
The cheapest month to fly from St Louis to Hanoi is usually September.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St Louis Airport to Hanoi Airport on Tuesday, 8 September 2026.
No airlines currently offer direct flights between St Louis Airport and Hanoi Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Hanoi but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Hanoi is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, Frontier Airlines offers the cheapest flight tickets to Hanoi.

Travelling from St Louis Airport (STL) to Hanoi Airport (HAN): what you need to know

  • The timezone in Hanoi is UTC+7, which is 13 hours ahead of St Louis.

  • For a stress-free journey, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This ensures you have enough time to board your STL to HAN flight.

  • You can expect longer queues during popular months like July. Arriving up to four hours ahead of international flights and two hours for domestic departures will help ensure a smooth travel experience.

Handy information about St Louis Airport (STL)

Arriving at Hanoi Airport (HAN)

  • If you're coming in on a late St Louis Airport to Hanoi Airport flight, nothing tops the convenience of staying close to the terminal. Collect your bags from the carousel and then be showered and sleeping shortly after at one of these accommodation options near HAN:

  • Pick up a Hanoi Airport rental car and discover corners of Hanoi that aren't on every traveller's list. Book your wheels with Dichung Car Rental.

  • To get the best possible deal, reserve your ride from Hanoi Airport several weeks in advance. Prices generally rise closer to your date of travel.

Getting from Hanoi Airport (HAN) to central Hanoi

  • From Hanoi Airport, Hanoi is approximately 31 kilometres away. It takes around 40 minutes to get to the centre driving.

  • Getting to the centre by public transport typically takes 1 hour.

When to fly to Hanoi Airport (HAN)

  • June is the most popular month for flights from St Louis Airport to Hanoi Airport. For smaller crowds, go to Hanoi in March.

  • The warmest month in Hanoi is June, with temperatures ranging between 25ºC and 36ºC. Lock in your flights from St Louis Airport to Hanoi Airport in this month if you like this kind of weather.

  • If you'd rather travel in cooler conditions, look for a cheap ticket from STL to HAN in January. Average temperatures are between 10ºC and 23ºC then.

Plan the rest of your trip from St Louis to Hanoi

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.