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

Japan Airlines is the most popular carrier operating from Lambert-St Louis to Hanoi Noibai

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.

$498 Cheap Flights from St. Louis to Hanoi in 2025/26

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Find the cheapest flights from St. Louis to Hanoi

Round-trip

One-way

Cheap round-trip flights

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7:50 am - 9:55 am

STL

HAN

38h 05m2 stops

7:05 pm - 9:48 pm

HAN

STL

38h 43m2 stops

$957Multiple Airlines

Wed, Apr 15 - Wed, Apr 29

6:50 pm - 10:05 am

STL

HAN

27h 15m2 stops

10:55 am - 10:58 pm

HAN

STL

24h 03m2 stops

$1,032Cathay Pacific

Mon, Mar 23 - Fri, Apr 3

6:08 pm - 10:05 am

STL

HAN

27h 57m2 stops

7:05 pm - 10:58 pm

HAN

STL

39h 53m2 stops

$1,041Cathay Pacific

Tue, Mar 24 - Sat, Apr 4

6:00 am - 10:15 pm

STL

HAN

28h 15m2 stops

11:35 pm - 4:55 pm

HAN

STL

53h 20m3 stops

$1,058United Airlines

Wed, Apr 15 - Wed, Apr 29

11:05 am - 10:05 am

STL

HAN

34h 00m2 stops

11:05 am - 11:59 pm

HAN

STL

25h 54m2 stops

$1,065Cathay Pacific

Fri, Jan 23 - Fri, Jan 30

6:50 pm - 10:05 am

STL

HAN

27h 15m2 stops

7:05 pm - 9:48 pm

HAN

STL

38h 43m2 stops

$1,066Cathay Pacific

Mon, Mar 23 - Mon, Apr 6

6:38 am - 10:05 am

STL

HAN

39h 27m2 stops

7:30 pm - 11:52 pm

HAN

STL

40h 22m2 stops

$1,082Multiple Airlines

Wed, Mar 11 - Sat, Mar 21

6:50 pm - 6:30 pm

STL

HAN

35h 40m2 stops

10:55 am - 10:58 pm

HAN

STL

24h 03m2 stops

$1,091Cathay Pacific

Sat, Mar 21 - Fri, Apr 3

6:38 am - 10:05 am

STL

HAN

39h 27m2 stops

10:55 am - 10:58 pm

HAN

STL

24h 03m2 stops

$1,100Cathay Pacific

Sun, Mar 22 - Sun, Apr 5

10:03 am - 6:30 pm

STL

HAN

44h 27m2 stops

7:05 pm - 10:58 pm

HAN

STL

39h 53m2 stops

$1,116Cathay Pacific

Fri, Mar 20 - Tue, Mar 31

Cathay Pacific flights from St. Louis to Hanoi

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

Cathay Pacific

Mar 23

STL6:50 pmLambert-St Louis

27h 15m

2 stops

HAN10:05 amHanoi Noibai

Apr 3

HAN10:55 amHanoi Noibai

24h 03m

2 stops

STL10:58 pmLambert-St Louis

$1,032

Find similar

Cathay Pacific

Mar 24

STL6:08 pmLambert-St Louis

27h 57m

2 stops

HAN10:05 amHanoi Noibai

Apr 4

HAN7:05 pmHanoi Noibai

39h 53m

2 stops

STL10:58 pmLambert-St Louis

$1,041

Find similar

Cathay Pacific

Jan 23

STL11:05 amLambert-St Louis

34h 00m

2 stops

HAN10:05 amHanoi Noibai

Jan 30

HAN11:05 amHanoi Noibai

25h 54m

2 stops

STL11:59 pmLambert-St Louis

$1,065

Find similar

Qatar Airways flights from St. Louis to Hanoi

Our best Qatar Airways deals on St. Louis to Hanoi flight tickets

Qatar Airways

Mar 22

STL11:59 amLambert-St Louis

30h 56m

2 stops

HAN6:55 amHanoi Noibai

Apr 2

HAN7:30 pmHanoi Noibai

31h 22m

2 stops

STL2:52 pmLambert-St Louis

$1,420

Find similar

Qatar Airways

Mar 24

STL6:08 pmLambert-St Louis

30h 12m

2 stops

HAN12:20 pmHanoi Noibai

Apr 3

HAN7:30 pmHanoi Noibai

39h 28m

2 stops

STL10:58 pmLambert-St Louis

$5,623

Find similar

Qatar Airways

Mar 24

STL11:47 amLambert-St Louis

31h 08m

2 stops

HAN6:55 amHanoi Noibai

Apr 4

HAN7:30 pmHanoi Noibai

34h 33m

2 stops

STL6:03 pmLambert-St Louis

$5,812

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Wed 4/15

7:50 am-9:55 am

2 stops38h 05m

Hanoi Noibai

Wed 4/29

7:05 pm-9:48 pm

2 stops38h 43m

$957

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Mon 3/23

6:50 pm-10:05 am

2 stops27h 15m

Hanoi Noibai

Fri 4/3

10:55 am-10:58 pm

2 stops24h 03m

$1,032

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Tue 3/24

6:08 pm-10:05 am

2 stops27h 57m

Hanoi Noibai

Sat 4/4

7:05 pm-10:58 pm

2 stops39h 53m

$1,041

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Wed 4/15

6:00 am-10:15 pm

2 stops28h 15m

Hanoi Noibai

Wed 4/29

11:35 pm-4:55 pm

3 stops53h 20m

$1,058

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Fri 1/23

11:05 am-10:05 am

2 stops34h 00m

Hanoi Noibai

Fri 1/30

11:05 am-11:59 pm

2 stops25h 54m

$1,065

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Mon 3/23

6:50 pm-10:05 am

2 stops27h 15m

Hanoi Noibai

Mon 4/6

7:05 pm-9:48 pm

2 stops38h 43m

$1,066

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-11:52 pm

2 stops40h 22m

$1,082

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sat 3/21

6:50 pm-6:30 pm

2 stops35h 40m

Hanoi Noibai

Fri 4/3

10:55 am-10:58 pm

2 stops24h 03m

$1,091

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sun 3/22

6:38 am-10:05 am

2 stops39h 27m

Hanoi Noibai

Sun 4/5

10:55 am-10:58 pm

2 stops24h 03m

$1,100

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Fri 3/20

10:03 am-6:30 pm

2 stops44h 27m

Hanoi Noibai

Tue 3/31

7:05 pm-10:58 pm

2 stops39h 53m

$1,116

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

Prices

Airlines

What is the cheapest day to depart on your flight to Hanoi?

According to our data, Sunday is the cheapest day to fly to Hanoi from St. Louis. The lowest ticket price found for a Sunday departure recently was $1,292. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Hanoi on Monday is $2,429.

What is the cheapest time of day to depart on your flight to Hanoi?

Our most recent data shows that the best time of day to fly to Hanoi is at noon. Flights from St. Louis to Hanoi during this time can be as low as $1,510. Try not to purchase tickets in the morning because they tend to be around $2,340. Of course, these prices can vary depending on the time of year and what airport you fly to.

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	27h 15m
Direct flights	None

The fastest flight from St. Louis to Hanoi takes 27h 15m

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 27h 15m.
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.