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.

$544 Cheap Flights from St. Louis to Hanoi in 2026

1 adult

0 bags

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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.

3:24 pm - 10:30 am

STL

HAN

31h 06m

2 stops

11:30 am - 1:50 am

HAN

STL

26h 20m

2 stops

$1,118Multiple Airlines

Sun, Sep 27 - Sun, Oct 18

6:14 am - 10:15 pm

STL

HAN

28h 01m

2 stops

11:35 pm - 11:50 pm

HAN

STL

36h 15m

2 stops

$1,197United Airlines

Wed, Sep 9 - Sun, Sep 13

8:50 am - 10:15 pm

STL

HAN

49h 25m

2 stops

11:35 pm - 3:38 pm

HAN

STL

52h 03m

3 stops

$1,221United Airlines

Sun, Sep 27 - Sun, Oct 18

6:14 am - 10:15 pm

STL

HAN

28h 01m

2 stops

11:35 pm - 9:22 pm

HAN

STL

33h 47m

2 stops

$1,237United Airlines

Sun, Sep 13 - Tue, Sep 15

6:14 am - 10:15 pm

STL

HAN

28h 01m

2 stops

11:35 pm - 11:50 pm

HAN

STL

36h 15m

2 stops

$1,247United Airlines

Wed, Sep 9 - Sun, Sep 13

7:23 pm - 10:15 pm

STL

HAN

38h 52m

2 stops

11:35 pm - 12:11 pm

HAN

STL

48h 36m

2 stops

$1,288United Airlines

Mon, Jul 13 - Sun, Jul 19

12:27 pm - 8:05 am

STL

HAN

31h 38m

2 stops

7:30 pm - 10:17 pm

HAN

STL

38h 47m

2 stops

$1,323Qatar Airways

Tue, Apr 21 - Tue, Apr 28

7:23 pm - 10:15 pm

STL

HAN

38h 52m

2 stops

11:35 pm - 12:11 pm

HAN

STL

48h 36m

2 stops

$1,331United Airlines

Sat, Jul 11 - Sun, Jul 19

7:23 pm - 10:15 pm

STL

HAN

38h 52m

2 stops

11:35 pm - 6:17 pm

HAN

STL

54h 42m

2 stops

$1,342United Airlines

Sat, Jul 11 - Wed, Jul 15

8:35 am - 10:15 pm

STL

HAN

49h 40m

2 stops

11:35 pm - 12:11 pm

HAN

STL

48h 36m

2 stops

$1,365United Airlines

Wed, Jul 15 - Sun, Jul 19

United Airlines flights from St. Louis to Hanoi

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

United Airlines

Sep 9

STL6:14 amLambert-St Louis

28h 01m

2 stops

HAN10:15 pmHanoi Noibai

Sep 13

HAN11:35 pmHanoi Noibai

36h 15m

2 stops

STL11:50 pmLambert-St Louis

$1,197

United Airlines

Sep 27

STL8:50 amLambert-St Louis

49h 25m

2 stops

HAN10:15 pmHanoi Noibai

Oct 18

HAN11:35 pmHanoi Noibai

52h 03m

3 stops

STL3:38 pmLambert-St Louis

$1,221

United Airlines

Sep 13

STL6:14 amLambert-St Louis

28h 01m

2 stops

HAN10:15 pmHanoi Noibai

Sep 15

HAN11:35 pmHanoi Noibai

33h 47m

2 stops

STL9:22 pmLambert-St Louis

$1,237

Delta flights from St. Louis to Hanoi

Our best Delta deals on St. Louis to Hanoi flight tickets

Delta

May 11

STL7:00 amLambert-St Louis

26h 35m

2 stops

HAN9:35 pmHanoi Noibai

May 18

HAN11:10 pmHanoi Noibai

36h 11m

2 stops

STL11:21 pmLambert-St Louis

$1,405

Delta

Jul 12

STL5:42 pmLambert-St Louis

39h 53m

2 stops

HAN9:35 pmHanoi Noibai

Jul 18

HAN11:10 pmHanoi Noibai

37h 27m

2 stops

STL12:37 amLambert-St Louis

$1,461

Delta

Jul 13

STL6:00 amLambert-St Louis

27h 35m

2 stops

HAN9:35 pmHanoi Noibai

Jul 21

HAN11:10 pmHanoi Noibai

37h 27m

2 stops

STL12:37 amLambert-St Louis

$1,480

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sun 9/27

3:24 pm-10:30 am

2 stops31h 06m

Hanoi Noibai

Sun 10/18

11:30 am-1:50 am

2 stops26h 20m

$1,118

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Wed 9/9

6:14 am-10:15 pm

2 stops28h 01m

Hanoi Noibai

Sun 9/13

11:35 pm-11:50 pm

2 stops36h 15m

$1,197

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sun 9/27

8:50 am-10:15 pm

2 stops49h 25m

Hanoi Noibai

Sun 10/18

11:35 pm-3:38 pm

3 stops52h 03m

$1,221

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sun 9/13

6:14 am-10:15 pm

2 stops28h 01m

Hanoi Noibai

Tue 9/15

11:35 pm-9:22 pm

2 stops33h 47m

$1,237

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Wed 9/9

6:14 am-10:15 pm

2 stops28h 01m

Hanoi Noibai

Sun 9/13

11:35 pm-11:50 pm

2 stops36h 15m

$1,247

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Mon 7/13

7:23 pm-10:15 pm

2 stops38h 52m

Hanoi Noibai

Sun 7/19

11:35 pm-12:11 pm

2 stops48h 36m

$1,288

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Tue 4/21

12:27 pm-8:05 am

2 stops31h 38m

Hanoi Noibai

Tue 4/28

7:30 pm-10:17 pm

2 stops38h 47m

$1,323

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sat 7/11

7:23 pm-10:15 pm

2 stops38h 52m

Hanoi Noibai

Sun 7/19

11:35 pm-12:11 pm

2 stops48h 36m

$1,331

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sat 7/11

7:23 pm-10:15 pm

2 stops38h 52m

Hanoi Noibai

Wed 7/15

11:35 pm-6:17 pm

2 stops54h 42m

$1,342

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Wed 7/15

8:35 am-10:15 pm

2 stops49h 40m

Hanoi Noibai

Sun 7/19

11:35 pm-12:11 pm

2 stops48h 36m

$1,365

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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?

Cathay Pacific, Delta, and Vietnam Airlines 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 35m
Direct flights	None

The fastest flight from St. Louis to Hanoi takes 26h 35m

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 35m.
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.