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$408+ 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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
STL — HAN
Jan 2 — Jan 91
Fri 1/2
Fri 1/9
1 adult, Economy
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Cheap 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 December 3, 2025.

This oojo deal was found by Cheapflights users on 12/1. 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 12/53:23 pmSTL - HAN
2 stops31h 12mEVA Air
Sun 12/76:20 pmHAN - STL
2 stops42h 39mEVA Air
Deal found 12/1$1,447
This EVA Air deal was found by Cheapflights users on 12/1. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/53:19 pmSTL - HAN
3 stops31h 16mMultiple Airlines
Sun 12/76:20 pmHAN - STL
2 stops35h 15mMultiple Airlines
Deal found 12/1$1,679

Find 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 December 3, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,007
(Cathay Pacific)

One-way from

$408
(Kiwi.com)
Provider with most accurate pricing for Lambert-St Louis-Hanoi Noibai flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Hanoi Noibai flights.
Search Deals
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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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 December 3, 2025.
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

Wed 3/11

6:38 am-10:05 am

2 stops39h 27m

Hanoi Noibai

Sat 3/21

11:05 am-6:03 pm

2 stops42h 58m

$1,007

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Mon 4/6

7:45 am-10:15 pm

2 stops26h 30m

Hanoi Noibai

Thu 4/9

11:30 pm-5:52 am

2 stops42h 22m

$1,475

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Mon 4/6

6:00 am-1:55 pm

2 stops43h 55m

Hanoi Noibai

Thu 4/9

8:45 am-11:24 pm

2 stops50h 39m

$1,661

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Mon 4/6

3:58 pm-10:40 am

2 stops30h 42m

Hanoi Noibai

Thu 4/9

12:00 pm-12:18 am

2 stops24h 18m

$1,680

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Wed 3/11

8:20 am-11:05 pm

2 stops26h 45m

Hanoi Noibai

Fri 3/20

12:25 am-2:42 pm

2 stops50h 17m

$2,204

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Mon 4/6

3:23 pm-1:15 pm

2 stops33h 52m

Hanoi Noibai

Wed 4/8

1:15 am-9:03 pm

2 stops31h 48m

$4,482

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Mon 3/2

7:43 pm-2:40 pm

3 stops53h 57m

$408

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Tue 3/3

7:00 am-10:30 pm

2 stops26h 30m

$499

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Wed 1/14

7:04 am-10:05 am

2 stops38h 01m

$501

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Mon 3/2

7:00 am-10:30 pm

2 stops26h 30m

$504

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/30

Showing 1-10 of 14 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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
OvagoPrice Accuracy2 starsTrust Score*2 stars
AranGrantPrice Accuracy2 starsTrust Score*3 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.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Hanoi

What is the cheapest time of day to fly from STL to HAN?

Find hourly flight availability from St. Louis to Hanoi. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 3, 2025.

It’s optimal to fly from St. Louis to Hanoi at noon. By choosing this option you can save up to 54% on the cost of your flight, compared to a flight in the evening.

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 26h 30m. United Airlines provides one of the quickest options available for as low as $1,475. The distance between St. Louis and Hanoi is about 8157 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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.

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