When did momondo last update prices for flights from Lambert-St Louis Airport to Hanoi Noibai Airport?

Prices for flights from Lambert-St Louis Airport to Hanoi Noibai Airport refresh daily.

How old do you have to be to fly from Lambert-St Louis Airport to Hanoi Noibai Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Hanoi Noibai Airport.

What documentation or ID do you need to fly to Hanoi Noibai Airport?

The necessary travel and health documents for your Hanoi Noibai Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$485 Cheap Flights from St. Louis to Hanoi in 2026

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Find the cheapest flights from St. Louis to Hanoi

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 am - 5:15 pm

STL

HAN

46h 15m

2 stops

12:35 pm - 2:51 pm

HAN

STL

38h 16m

2 stops

$1,115Multiple Airlines

Tue, Mar 10 - Tue, Mar 17

5:18 pm - 9:55 am

STL

HAN

28h 37m

2 stops

7:10 pm - 11:59 pm

HAN

STL

40h 49m

2 stops

$1,142Cathay Pacific

Wed, Jun 17 - Sun, Jun 21

7:56 pm - 10:10 am

STL

HAN

26h 14m

2 stops

11:20 pm - 12:41 pm

HAN

STL

25h 21m

2 stops

$1,283Multiple Airlines

Fri, May 15 - Thu, May 21

6:38 am - 10:05 am

STL

HAN

39h 27m

2 stops

11:05 am - 10:58 pm

HAN

STL

23h 53m

2 stops

$1,549Cathay Pacific

Wed, Mar 11 - Sat, Mar 21

6:38 am - 10:05 am

STL

HAN

39h 27m

2 stops

11:05 am - 10:58 pm

HAN

STL

23h 53m

2 stops

$1,561Cathay Pacific

Wed, Mar 11 - Sat, Mar 21

6:38 am - 10:05 am

STL

HAN

39h 27m

2 stops

7:30 pm - 10:58 pm

HAN

STL

39h 28m

2 stops

$1,568Cathay Pacific

Wed, Mar 11 - Sat, Mar 21

7:06 pm - 10:15 pm

STL

HAN

39h 09m

2 stops

11:35 pm - 3:46 pm

HAN

STL

52h 11m

3 stops

$1,615United Airlines

Wed, Jun 17 - Sun, Jun 21

6:38 am - 10:05 am

STL

HAN

39h 27m

2 stops

11:05 am - 10:58 pm

HAN

STL

23h 53m

2 stops

$1,702Cathay Pacific

Wed, Mar 11 - Sat, Mar 21

7:30 am - 4:45 am

STL

HAN

33h 15m

3 stops

8:45 pm - 8:04 pm

HAN

STL

35h 19m

3 stops

$1,882Multiple Airlines

Fri, May 15 - Thu, May 21

7:30 am - 11:45 pm

STL

HAN

28h 15m

2 stops

8:45 pm - 8:04 pm

HAN

STL

35h 19m

3 stops

$1,946Multiple Airlines

Fri, May 15 - Thu, May 21

Cathay Pacific flights from St. Louis to Hanoi

Our best Cathay Pacific deals on St. Louis to Hanoi flight tickets

Cathay Pacific

Jun 17

STL5:18 pmLambert-St Louis

28h 37m

2 stops

HAN9:55 amHanoi Noibai

Jun 21

HAN7:10 pmHanoi Noibai

40h 49m

2 stops

STL11:59 pmLambert-St Louis

$1,142

Cathay Pacific

Mar 11

STL6:38 amLambert-St Louis

39h 27m

2 stops

HAN10:05 amHanoi Noibai

Mar 21

HAN11:05 amHanoi Noibai

23h 53m

2 stops

STL10:58 pmLambert-St Louis

$1,549

Cathay Pacific

Mar 11

STL6:38 amLambert-St Louis

39h 27m

2 stops

HAN10:05 amHanoi Noibai

Mar 21

HAN11:05 amHanoi Noibai

23h 53m

2 stops

STL10:58 pmLambert-St Louis

$1,561

United Airlines flights from St. Louis to Hanoi

Our best United Airlines deals on St. Louis to Hanoi flight tickets

United Airlines

Jun 17

STL7:06 pmLambert-St Louis

39h 09m

2 stops

HAN10:15 pmHanoi Noibai

Jun 21

HAN11:35 pmHanoi Noibai

52h 11m

3 stops

STL3:46 pmLambert-St Louis

$1,615

United Airlines

Mar 11

STL6:00 amLambert-St Louis

29h 05m

2 stops

HAN11:05 pmHanoi Noibai

Mar 17

HAN12:25 amHanoi Noibai

34h 00m

2 stops

STL10:25 pmLambert-St Louis

$2,958

Fly from

Fly to

Route

Depart

Return

Price

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Tue 3/10

7:00 am-5:15 pm

2 stops46h 15m

Hanoi Noibai

Tue 3/17

12:35 pm-2:51 pm

2 stops38h 16m

$1,115

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Wed 6/17

5:18 pm-9:55 am

2 stops28h 37m

Hanoi Noibai

Sun 6/21

7:10 pm-11:59 pm

2 stops40h 49m

$1,142

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Fri 5/15

7:56 pm-10:10 am

2 stops26h 14m

Hanoi Noibai

Thu 5/21

11:20 pm-12:41 pm

2 stops25h 21m

$1,283

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Wed 3/11

6:38 am-10:05 am

2 stops39h 27m

Hanoi Noibai

Sat 3/21

11:05 am-10:58 pm

2 stops23h 53m

$1,549

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Wed 3/11

6:38 am-10:05 am

2 stops39h 27m

Hanoi Noibai

Sat 3/21

11:05 am-10:58 pm

2 stops23h 53m

$1,561

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Wed 3/11

6:38 am-10:05 am

2 stops39h 27m

Hanoi Noibai

Sat 3/21

7:30 pm-10:58 pm

2 stops39h 28m

$1,568

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Wed 6/17

7:06 pm-10:15 pm

2 stops39h 09m

Hanoi Noibai

Sun 6/21

11:35 pm-3:46 pm

3 stops52h 11m

$1,615

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Wed 3/11

6:38 am-10:05 am

2 stops39h 27m

Hanoi Noibai

Sat 3/21

11:05 am-10:58 pm

2 stops23h 53m

$1,702

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Fri 5/15

7:30 am-4:45 am

3 stops33h 15m

Hanoi Noibai

Thu 5/21

8:45 pm-8:04 pm

3 stops35h 19m

$1,882

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Fri 5/15

7:30 am-11:45 pm

2 stops28h 15m

Hanoi Noibai

Thu 5/21

8:45 pm-8:04 pm

3 stops35h 19m

$1,946

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis to Hanoi

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Lambert-St Louis to Hanoi Noibai?

Japan Airlines and Cathay Pacific are the most popular carriers operating from Lambert-St Louis to Hanoi Noibai

When to book flights from St. Louis to Hanoi

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Hanoi according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap St. Louis to Hanoi (STL to HAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Hanoi

Fastest flight time	26h 14m
Direct flights	None

The fastest flight from St. Louis to Hanoi takes 26h 14m

There are no direct flights from St. Louis to Hanoi. There are no popular flight routes from St. Louis to Hanoi.

Search flight deals

How far is Lambert-St Louis to Hanoi Noibai by plane?
There are 8181.5 mi between Lambert-St Louis and Hanoi Noibai. By plane, this route typically takes 26h 14m.
When did momondo last update prices for flights from Lambert-St Louis Airport to Hanoi Noibai Airport?
Prices for flights from Lambert-St Louis Airport to Hanoi Noibai Airport refresh daily.
How old do you have to be to fly from Lambert-St Louis Airport to Hanoi Noibai Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Hanoi Noibai Airport.
What documentation or ID do you need to fly to Hanoi Noibai Airport?
The necessary travel and health documents for your Hanoi Noibai Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Hanoi?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Hanoi. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from St. Louis to Hanoi with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Hanoi from St. Louis with this policy.

How can momondo help me find flights from St. Louis to Hanoi?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Hanoi.

I’m not ready to book a flight from St. Louis to Hanoi right now. Can momondo alert me if prices change?

Yes. momondo can track prices for St. Louis to Hanoi flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.