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Hanoi

$464+ Cheap flights from St. Louis (STL) to Hanoi (HAN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
STL — HAN
Feb 15 — Feb 221
Sun 2/15
Sun 2/22
1 adult, Economy
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1. Tell us where you want to go

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2. Select your favorite providers

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Cheap flight deals from St. Louis to Hanoi

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Hanoi (HAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 16, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,061
(China Airlines)

One-way from

$464
(oojo)
Provider with most accurate pricing for Lambert-St Louis-Hanoi Noibai flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Hanoi Noibai flights.
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From Lambert-St Louis to Hanoi Noibai
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One-way flight from Lambert-St Louis to Hanoi Noibai
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Find flight deals from St. Louis to Hanoi

Cheapest flights from St. Louis to Hanoi
Explore the most affordable flight options available from St. Louis to Hanoi. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 16, 2026.

This United Airlines deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2711:00 am
STL
-
HAN
2 stops47h 15m
United Airlines
Thu 10/111:35 pm
HAN
-
STL
2 stops31h 03m
United Airlines
Deal found 1/12$994
This China Airlines deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/117:25 am
STL
-
HAN
2 stops38h 55m
Multiple Airlines
Sat 3/215:30 pm
HAN
-
STL
2 stops55h 15m
Multiple Airlines
Deal found 1/14$1,061
This Cathay Pacific deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/158:00 am
STL
-
HAN
2 stops38h 05m
Multiple Airlines
Sun 3/297:05 pm
HAN
-
STL
2 stops40h 53m
Multiple Airlines
Deal found 1/14$1,071
This China Airlines deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/219:35 pm
STL
-
HAN
2 stops54h 55m
Multiple Airlines
Sat 4/45:50 pm
HAN
-
STL
2 stops43h 40m
Multiple Airlines
Deal found 1/14$1,075
This China Airlines deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/2910:50 am
STL
-
HAN
2 stops40h 40m
Multiple Airlines
Sun 2/111:35 am
HAN
-
STL
2 stops36h 10m
Multiple Airlines
Deal found 1/15$1,079
This KAYAK deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/2010:33 am
STL
-
HAN
2 stops35h 32m
Cathay Pacific
Fri 4/310:55 am
HAN
-
STL
2 stops43h 05m
Cathay Pacific
Deal found 1/14$1,091
This oojo deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/272:47 pm
STL
-
HAN
2 stops30h 43m
Multiple Airlines
Fri 3/611:30 am
HAN
-
STL
2 stops25h 29m
Multiple Airlines
Deal found 1/13$1,103
This oojo deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/215:30 pm
STL
-
HAN
2 stops35h 45m
EVA Air
Sat 4/46:00 pm
HAN
-
STL
2 stops33h 20m
EVA Air
Deal found 1/13$1,108
This Gurufare deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1910:33 am
STL
-
HAN
2 stops35h 32m
Cathay Pacific
Fri 4/310:55 am
HAN
-
STL
2 stops43h 05m
Cathay Pacific
Deal found 1/14$1,117
This China Airlines deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/2710:50 am
STL
-
HAN
2 stops34h 45m
Multiple Airlines
Fri 1/305:30 pm
HAN
-
STL
2 stops36h 30m
Multiple Airlines
Deal found 1/13$1,130

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Hanoi that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 16, 2026.
Use the filters below to find and compare flights from St. Louis to Hanoi that are best for you.

Fly from

St. Louis

Fly to

Hanoi

Route

Depart

Return

Price

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sun 3/15

8:00 am-10:05 am

2 stops38h 05m

Hanoi Noibai

Sun 3/29

7:05 pm-11:58 pm

2 stops40h 53m

$1,071

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sat 3/21

9:35 pm-4:30 pm

2 stops54h 55m

Hanoi Noibai

Sat 4/4

5:50 pm-1:30 am

2 stops43h 40m

$1,075

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Fri 3/20

10:33 am-10:05 am

2 stops35h 32m

Hanoi Noibai

Fri 4/3

10:55 am-6:00 pm

2 stops43h 05m

$1,091

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Fri 2/27

2:47 pm-10:30 am

2 stops30h 43m

Hanoi Noibai

Fri 3/6

11:30 am-11:59 pm

2 stops25h 29m

$1,103

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sat 3/21

5:30 pm-5:15 pm

2 stops35h 45m

Hanoi Noibai

Sat 4/4

6:00 pm-3:20 pm

2 stops33h 20m

$1,108

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Wed 3/11

8:25 am-10:20 am

3 stops37h 55m

Hanoi Noibai

Sat 3/21

5:30 pm-12:45 pm

2 stops55h 15m

$1,110

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Mon 3/23

6:50 pm-6:30 pm

2 stops35h 40m

Hanoi Noibai

Fri 4/3

10:55 am-6:00 pm

2 stops43h 05m

$1,117

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Thu 3/19

10:33 am-10:05 am

2 stops35h 32m

Hanoi Noibai

Fri 4/3

10:55 am-6:00 pm

2 stops43h 05m

$1,117

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Tue 1/27

10:50 am-10:35 am

2 stops34h 45m

Hanoi Noibai

Fri 1/30

5:30 pm-5:00 pm

2 stops36h 30m

$1,130

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Tue 3/3

7:00 am-10:30 pm

2 stops26h 30m

$464

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/14

Showing 1-10 of 20 results
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Compare providers for flights from St. Louis to Hanoi

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Hanoi in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Hanoi flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Hanoi flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from St. Louis-Hanoi flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Hanoi flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Hanoi flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Hanoi

Have a flexible travel schedule? Discover the best time to fly to Hanoi from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Hanoi. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from St. Louis to Hanoi?

    A quick flight from St. Louis to Hanoi can take about 35h 32m. Cathay Pacific provides one of the quickest options available for as low as $1,091. The distance between St. Louis and Hanoi is about 8157 mi.

  • Can I find deals for flights from St. Louis to Hanoi that include hotel bookings?

    Yes. In addition to deals on St. Louis to Hanoi flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Hanoi?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Hanoi.

  • Can I find deals for business class flights from St. Louis to Hanoi?

    Yes. Cheapflights offers flight deals from St. Louis to Hanoi by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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