Which airports can I use when flying from St. Louis to Hanoi?

Flights from St. Louis to Hanoi usually depart from Lambert-St Louis (STL) and arrive at Hanoi Noibai (HAN).

What cabin classes can I book on flights from St. Louis to Hanoi?

Two cabin classes are available on flights from St. Louis to Hanoi: • Economy Class • Business Class

Can I save money by using flexible dates for flights from St. Louis to Hanoi?

Yes. Being flexible with your travel dates can save you up to 38% on the St. Louis to Hanoi route. Monday is the cheapest departure day at $1,013 round-trip on average, while Friday is the most expensive at $1,632, a difference of $619. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

What popular places can I visit in Hanoi?

Some of the most popular sights in Hanoi are Hoan Kiem Lake, Old City Gate and Hanoi Opera House. These are among the most viewed places in Hanoi on KAYAK.

Do I need a passport to fly from St. Louis to Hanoi?

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

How are flight prices from St. Louis to Hanoi looking right now?

One-way fares from St. Louis to Hanoi are currently higher than usual. Average one-way flight prices are about $2,791, which is 406% above the typical average for this route.

What is the time difference between St. Louis and Hanoi?

Hanoi is 12 hours ahead of St. Louis (Indochina Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

How much should I expect to pay for a St. Louis to Hanoi flight?

Round-trip flights from St. Louis to Hanoi range from $1,061 to $1,414, with an average of $1,272 over the past 12 months. Anything below $1,061 counts as a good deal.

What is the cheapest airline to fly from St. Louis to Hanoi?

United Airlines ($1,172) and Korean Air ($1,185) are the cheapest airlines to fly round-trip from St. Louis to Hanoi according to KAYAK data over the last 5 days.

$651 CHEAP FLIGHTS from St. Louis to Hanoi (STL - HAN)

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Cheapest round-trip

$1,057

Typical prices: $1,061-$1,414

Multiple Airlines

Fri 11/9Fri 11/16

STL - HAN • 2 stops

Cheapest one-way

$651

Typical prices: $528-$859

Multiple Airlines

Tue 10/9

STL - HAN • 2 stops

When to travel

January

Cheapest • 25% price drop

February

Most popular

Good to know

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Flight Deals

Cheap Flights from St. Louis to Hanoi (STL-HAN)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Recent round-trip flight deals from St. Louis to Hanoi

Mon, Nov 9 - Mon, Nov 16

6:00 am - 12:20 pmSTL Lambert-St Louis-HAN Hanoi Noibai

41h 20m2 stops Seattle/Tacoma Intl Doha Hamad Intl

7:10 pm - 10:15 pmHAN Hanoi Noibai-STL Lambert-St Louis

40h 05m2 stops Doha Hamad Intl Chicago O'Hare Intl

$1,057Multiple Airlines

Wed, Oct 28 - Wed, Nov 4

11:32 am - 10:05 amSTL Lambert-St Louis-HAN Hanoi Noibai

34h 33m2 stops Chicago O'Hare Intl Hong Kong Intl

11:15 am - 10:15 pmHAN Hanoi Noibai-STL Lambert-St Louis

48h 00m2 stops Hong Kong Intl Chicago O'Hare Intl

$1,084Multiple Airlines

Sun, Jan 3 - Sun, Jan 31

6:04 am - 12:20 pmSTL Lambert-St Louis-HAN Hanoi Noibai

41h 16m2 stops Seattle/Tacoma Intl Doha Hamad Intl

7:10 pm - 6:29 pmHAN Hanoi Noibai-STL Lambert-St Louis

36h 19m2 stops Doha Hamad Intl Chicago O'Hare Intl

$1,097Multiple Airlines

Mon, Nov 9 - Sun, Nov 15

7:30 am - 11:05 pmSTL Lambert-St Louis-HAN Hanoi Noibai

26h 35m2 stops Chicago O'Hare Intl Tokyo Narita

12:25 am - 6:05 pmHAN Hanoi Noibai-STL Lambert-St Louis

54h 40m3 stops Tokyo Narita Los Angeles San Francisco

$1,172United Airlines

Thu, Nov 12 - Mon, Nov 16

7:05 am - 11:10 amSTL Lambert-St Louis-HAN Hanoi Noibai

39h 05m2 stops Atlanta Hartsfield-Jackson Incheon Intl

12:20 pm - 4:43 pmHAN Hanoi Noibai-STL Lambert-St Louis

41h 23m2 stops Incheon Intl Atlanta Hartsfield-Jackson

$1,185Korean Air

Thu, Nov 12 - Mon, Nov 16

7:05 am - 11:10 amSTL Lambert-St Louis-HAN Hanoi Noibai

39h 05m2 stops Atlanta Hartsfield-Jackson Incheon Intl

12:20 pm - 4:43 pmHAN Hanoi Noibai-STL Lambert-St Louis

41h 23m2 stops Incheon Intl Atlanta Hartsfield-Jackson

$1,186Korean Air

Thu, Nov 12 - Sun, Nov 15

5:00 am - 11:05 pmSTL Lambert-St Louis-HAN Hanoi Noibai

29h 05m2 stops Chicago O'Hare Intl Tokyo Narita

12:25 am - 6:05 pmHAN Hanoi Noibai-STL Lambert-St Louis

54h 40m3 stops Tokyo Narita Los Angeles San Francisco

$1,205United Airlines

Wed, Oct 28 - Tue, Nov 3

6:09 am - 11:05 pmSTL Lambert-St Louis-HAN Hanoi Noibai

28h 56m2 stops Newark Tokyo Narita

12:25 am - 7:23 pmHAN Hanoi Noibai-STL Lambert-St Louis

31h 58m2 stops Tokyo Narita Chicago O'Hare Intl

$1,207United Airlines

Thu, Nov 12 - Sun, Nov 15

5:00 am - 11:05 pmSTL Lambert-St Louis-HAN Hanoi Noibai

29h 05m2 stops Chicago O'Hare Intl Tokyo Narita

12:25 am - 6:05 pmHAN Hanoi Noibai-STL Lambert-St Louis

54h 40m3 stops Tokyo Narita Los Angeles San Francisco

$1,239United Airlines

Mon, Nov 9 - Mon, Nov 16

3:23 pm - 11:35 amSTL Lambert-St Louis-HAN Hanoi Noibai

31h 12m2 stops Seattle/Tacoma Intl Taipei City Taiwan Taoyuan Intl

6:20 pm - 6:05 pmHAN Hanoi Noibai-STL Lambert-St Louis

36h 45m3 stops Taipei City Taiwan Taoyuan Intl Los Angeles San Francisco

$1,338Multiple Airlines

Booking Insights

Price, demand and travel trends for St. Louis to Hanoi flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from St. Louis to Hanoi with more confidence.

Prices

Airlines

What's the cheapest day of the week to fly from St. Louis to Hanoi?

Monday is the cheapest day of the week to fly from St. Louis to Hanoi, it is 21% cheaper than the average day. Friday is the most expensive day with flight prices 28% higher than average. Based on deals found by KAYAK users in the last 12 months.

Find deals

Low season	May
High season	February
Cheapest flight	$651

Best time to beat the crowds but there is an average 21% increase in price.

Most popular time to fly with an average 10% increase in price.

Flight from St. Louis to Hanoi

When to book flights from St. Louis to Hanoi

Are your dates flexible? Find out the best times to travel from St. Louis to Hanoi based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Which airports can I use when flying from St. Louis to Hanoi?
Flights from St. Louis to Hanoi usually depart from Lambert-St Louis (STL) and arrive at Hanoi Noibai (HAN).
What cabin classes can I book on flights from St. Louis to Hanoi?
Two cabin classes are available on flights from St. Louis to Hanoi:

• Economy Class
• Business Class
Can I save money by using flexible dates for flights from St. Louis to Hanoi?
Yes. Being flexible with your travel dates can save you up to 38% on the St. Louis to Hanoi route. Monday is the cheapest departure day at $1,013 round-trip on average, while Friday is the most expensive at $1,632, a difference of $619. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
What popular places can I visit in Hanoi?
Some of the most popular sights in Hanoi are Hoan Kiem Lake, Old City Gate and Hanoi Opera House. These are among the most viewed places in Hanoi on KAYAK.
Do I need a passport to fly from St. Louis to Hanoi?
Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.
How are flight prices from St. Louis to Hanoi looking right now?
One-way fares from St. Louis to Hanoi are currently higher than usual. Average one-way flight prices are about $2,791, which is 406% above the typical average for this route.
What is the time difference between St. Louis and Hanoi?
Hanoi is 12 hours ahead of St. Louis (Indochina Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.
How much should I expect to pay for a St. Louis to Hanoi flight?
Round-trip flights from St. Louis to Hanoi range from $1,061 to $1,414, with an average of $1,272 over the past 12 months. Anything below $1,061 counts as a good deal.

If your dates can be flexible, aim for a Monday departure instead of Friday. On this route, Monday flights average $1,013 - about $619 less than Friday (38% savings) based on the last 12 months.
If you can choose when to travel, plan your St. Louis to Hanoi trip for January. Fares historically average $956 round-trip in that month - typically $1,088 less than the most expensive month, which is December (based on the last 12 months).
If you're arriving late at night and need somewhere to stay, check out these hotels close to Hanoi Noibai Airport.
- Huy Hoang Airport Hotel

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STL - HAN

$651 Find Cheap Flights from St. Louis to Hanoi - Compare and Save

Everything you should know

Cheap Flights from St. Louis to Hanoi (STL-HAN)

Recent round-trip flight deals from St. Louis to Hanoi

Recent one-way flight deals from St. Louis to Hanoi

Price, demand and travel trends for St. Louis to Hanoi flights

What's the cheapest day of the week to fly from St. Louis to Hanoi?

What is the cheapest airline to fly from St. Louis to Hanoi?

Key details for St. Louis to Hanoi flights

Low season

High season

Cheapest flight

When to book flights from St. Louis to Hanoi

Your St. Louis to Hanoi flight questions, answered

Your guide to booking St. Louis to Hanoi flights

More options for your flight from St. Louis to Hanoi

Complete your trip to Hanoi with a hotel stay or car rental

Information on your arrival and departure airports

Cabin class types available on flights from St. Louis to Hanoi

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Flights from domestic origins to Hanoi

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