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

Cathay Pacific, ANA, and Delta are the most popular carriers 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.

$500 Cheap Flights from St. Louis to Hanoi in 2025/26

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Find the cheapest flights from St. Louis to Hanoi

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One-way

Cheap round-trip flights

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9:25 am - 3:40 pmSTL-HAN

41h 15m2 stops

7:30 pm - 9:44 pmHAN-STL

39h 14m2 stops

$945Cathay Pacific

Find Deal

Wed, Feb 4 - Wed, Feb 25

6:00 am - 10:05 amSTL-HAN

39h 05m2 stops

7:30 pm - 11:56 pmHAN-STL

41h 26m2 stops

$958Multiple Airlines

Find Deal

Tue, Nov 18 - Tue, Nov 25

5:04 pm - 10:05 amSTL-HAN

28h 01m2 stops

11:05 am - 10:24 pmHAN-STL

24h 19m2 stops

$972Cathay Pacific

Find Deal

Tue, Feb 3 - Tue, Feb 24

11:06 am - 10:05 amSTL-HAN

33h 59m2 stops

11:05 am - 10:24 pmHAN-STL

24h 19m2 stops

$973Cathay Pacific

Find Deal

Thu, Feb 5 - Tue, Feb 24

6:00 am - 10:30 pmSTL-HAN

27h 30m2 stops

11:55 pm - 11:59 pmHAN-STL

37h 04m2 stops

$1,023Japan Airlines

Find Deal

Wed, Nov 5 - Sun, Nov 9

5:30 pm - 11:05 pmSTL-HAN

40h 35m2 stops

12:25 am - 4:27 pmHAN-STL

29h 02m2 stops

$1,216United Airlines

Find Deal

Sun, Dec 7 - Sat, Dec 13

7:00 am - 10:30 pmSTL-HAN

26h 30m2 stops

11:55 pm - 11:59 pmHAN-STL

37h 04m2 stops

$1,266Alaska Airlines

Find Deal

Sun, Dec 7 - Sun, Dec 14

9:00 am - 11:05 pmSTL-HAN

25h 05m2 stops

12:25 am - 10:45 pmHAN-STL

35h 20m2 stops

$1,487United Airlines

Find Deal

Sat, Dec 6 - Fri, Dec 12

8:05 am - 11:05 pmSTL-HAN

26h 00m2 stops

12:25 am - 7:19 pmHAN-STL

31h 54m2 stops

$1,494ANA

Find Deal

Sun, Feb 1 - Fri, Feb 20

1:15 pm - 11:05 pmSTL-HAN

44h 50m2 stops

12:25 am - 5:44 pmHAN-STL

30h 19m2 stops

$1,500ANA

Find Deal

Sat, Jan 31 - Fri, Feb 20

Cathay Pacific flights from St. Louis to Hanoi

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

Cathay Pacific

Feb 4

STL9:25 amLambert-St Louis

41h 15m

2 stops

HAN3:40 pmHanoi Noibai

Feb 25

HAN7:30 pmHanoi Noibai

39h 14m

2 stops

STL9:44 pmLambert-St Louis

$945

Find similar

Cathay Pacific

Feb 3

STL5:04 pmLambert-St Louis

28h 01m

2 stops

HAN10:05 amHanoi Noibai

Feb 24

HAN11:05 amHanoi Noibai

24h 19m

2 stops

STL10:24 pmLambert-St Louis

$972

Find similar

Cathay Pacific

Feb 5

STL11:06 amLambert-St Louis

33h 59m

2 stops

HAN10:05 amHanoi Noibai

Feb 24

HAN11:05 amHanoi Noibai

24h 19m

2 stops

STL10:24 pmLambert-St Louis

$973

Find similar

United Airlines flights from St. Louis to Hanoi

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

United Airlines

Dec 7

STL5:30 pmLambert-St Louis

40h 35m

2 stops

HAN11:05 pmHanoi Noibai

Dec 13

HAN12:25 amHanoi Noibai

29h 02m

2 stops

STL4:27 pmLambert-St Louis

$1,216

Find similar

United Airlines

Dec 6

STL9:00 amLambert-St Louis

25h 05m

2 stops

HAN11:05 pmHanoi Noibai

Dec 12

HAN12:25 amHanoi Noibai

35h 20m

2 stops

STL10:45 pmLambert-St Louis

$1,487

Find similar

United Airlines

Dec 6

STL6:30 amLambert-St Louis

27h 35m

3 stops

HAN11:05 pmHanoi Noibai

Dec 12

HAN12:25 amHanoi Noibai

33h 32m

2 stops

STL8:57 pmLambert-St Louis

$1,787

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Wed 2/4

9:25 am-3:40 pm

2 stops41h 15m

Hanoi Noibai

Wed 2/25

7:30 pm-9:44 pm

2 stops39h 14m

$945

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Tue 11/18

6:00 am-10:05 am

2 stops39h 05m

Hanoi Noibai

Tue 11/25

7:30 pm-11:56 pm

2 stops41h 26m

$958

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Tue 2/3

5:04 pm-10:05 am

2 stops28h 01m

Hanoi Noibai

Tue 2/24

11:05 am-10:24 pm

2 stops24h 19m

$972

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Thu 2/5

11:06 am-10:05 am

2 stops33h 59m

Hanoi Noibai

Tue 2/24

11:05 am-10:24 pm

2 stops24h 19m

$973

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Wed 11/5

6:00 am-10:30 pm

2 stops27h 30m

Hanoi Noibai

Sun 11/9

11:55 pm-11:59 pm

2 stops37h 04m

$1,023

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sun 12/7

5:30 pm-11:05 pm

2 stops40h 35m

Hanoi Noibai

Sat 12/13

12:25 am-4:27 pm

2 stops29h 02m

$1,216

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sun 12/7

7:00 am-10:30 pm

2 stops26h 30m

Hanoi Noibai

Sun 12/14

11:55 pm-11:59 pm

2 stops37h 04m

$1,266

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sat 12/6

9:00 am-11:05 pm

2 stops25h 05m

Hanoi Noibai

Fri 12/12

12:25 am-10:45 pm

2 stops35h 20m

$1,487

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sun 2/1

8:05 am-11:05 pm

2 stops26h 00m

Hanoi Noibai

Fri 2/20

12:25 am-7:19 pm

2 stops31h 54m

$1,494

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sat 1/31

1:15 pm-11:05 pm

2 stops44h 50m

Hanoi Noibai

Fri 2/20

12:25 am-5:44 pm

2 stops30h 19m

$1,500

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

Direct flights	None

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 24h 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.