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$474+ 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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
STL — HAN
Dec 25 — Jan 11
Thu 12/25
Thu 1/1
1 adult, Economy
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Find flight deals from St. Louis to Hanoi

Best flights from St. Louis to Hanoi
Discover carefully curated flight deals from St. Louis to Hanoi that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 25, 2025.

This Cathay Pacific deal was found by Cheapflights users on 11/23. 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 5/311:14 amSTL - HAN
2 stops34h 41mMultiple Airlines
Sat 5/97:05 pmHAN - STL
2 stops40h 19mMultiple Airlines
Deal found 11/23$1,057
This Delta deal was found by Cheapflights users on 11/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/67:15 amSTL - HAN
2 stops39h 25mDelta
Thu 4/912:00 pmHAN - STL
2 stops24h 18mDelta
Deal found 11/23$1,503
This Arangrant deal was found by Cheapflights users on 11/25. 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 Arangrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/193:23 pmSTL - HAN
2 stops42h 52mANA
Sun 5/311:35 pmHAN - STL
2 stops31h 50mANA
Deal found 11/25$4,339
This Emirates deal was found by Cheapflights users on 11/23. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/63:23 pmSTL - HAN
2 stops33h 52mEmirates
Wed 4/81:15 amHAN - STL
2 stops31h 48mEmirates
Deal found 11/23$4,482
This Expedia deal was found by Cheapflights users on 11/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/192:55 pmSTL - HAN
2 stops46h 55mMultiple Airlines
Sat 5/22:50 amHAN - STL
2 stops47h 21mMultiple Airlines
Deal found 11/25$4,431

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 November 25, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,057
(Cathay Pacific)

One-way from

$474
(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
Search Deals
One-way flight from Lambert-St Louis to Hanoi Noibai
Search Deals

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 November 25, 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

Sun 5/3

11:14 am-9:55 am

2 stops34h 41m

Hanoi Noibai

Sat 5/9

7:05 pm-11:24 pm

2 stops40h 19m

$1,057

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Mon 4/6

7:15 am-10:40 am

2 stops39h 25m

Hanoi Noibai

Thu 4/9

12:00 pm-12:18 am

2 stops24h 18m

$1,503

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sun 4/19

3:23 pm-10:15 pm

2 stops42h 52m

Hanoi Noibai

Sun 5/3

11:35 pm-7:25 pm

2 stops31h 50m

$4,339

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sun 4/19

2:55 pm-1:50 am

2 stops46h 55m

Hanoi Noibai

Sat 5/2

2:50 am-2:11 pm

2 stops47h 21m

$4,431

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

Wed 3/11

7:43 pm-12:10 pm

3 stops52h 27m

$474

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Thu 3/12

10:42 am-7:35 am

3 stops56h 53m

$489

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Wed 12/31

6:30 am-11:05 pm

2 stops27h 35m

$739

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sat 12/27

5:00 pm-11:35 am

2 stops29h 35m

$1,227

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Wed 12/31

6:30 am-12:00 pm

3 stops64h 30m

$2,611

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/23

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 November.
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

*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 November 25, 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 39h 25m. Delta provides one of the quickest options available for as low as $1,503. 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.

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