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Hanoi

$536+ 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 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — HAN
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
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 July 27, 2026.

This FlightHub deal was found by Cheapflights users on 7/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/277:02 am
STL
-
HAN
2 stops35h 53m
Multiple Airlines
Thu 11/128:55 am
HAN
-
STL
2 stops52h 01m
Multiple Airlines
Deal found 7/27$1,073
This FlightHub deal was found by Cheapflights users on 7/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/123:11 pm
STL
-
HAN
2 stops56h 09m
Multiple Airlines
Thu 11/267:10 pm
HAN
-
STL
2 stops41h 49m
Multiple Airlines
Deal found 7/24$1,078
This oojo deal was found by Cheapflights users on 7/26. 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.
Mon 11/98:13 pm
STL
-
HAN
2 stops45h 42m
Qatar Airways
Mon 11/167:10 pm
HAN
-
STL
2 stops56h 05m
Qatar Airways
Deal found 7/26$1,110
This FlightHub deal was found by Cheapflights users on 7/23. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/93:11 pm
STL
-
HAN
2 stops50h 44m
Multiple Airlines
Mon 11/167:10 pm
HAN
-
STL
2 stops56h 05m
Multiple Airlines
Deal found 7/23$1,121
This oojo deal was found by Cheapflights users on 7/27. 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.
Mon 11/97:24 am
STL
-
HAN
2 stops26h 06m
Japan Airlines
Mon 11/1611:55 pm
HAN
-
STL
2 stops29h 48m
Japan Airlines
Deal found 7/27$1,150
This oojo deal was found by Cheapflights users on 7/23. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/711:29 am
STL
-
HAN
2 stops35h 51m
Qatar Airways
Tue 11/178:55 am
HAN
-
STL
2 stops66h 20m
Qatar Airways
Deal found 7/23$1,155
This FlightHub deal was found by Cheapflights users on 7/23. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/77:00 am
STL
-
HAN
2 stops34h 55m
Multiple Airlines
Tue 11/178:55 am
HAN
-
STL
2 stops66h 20m
Multiple Airlines
Deal found 7/23$1,163
This KAYAK deal was found by Cheapflights users on 7/23. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:05 pm
STL
-
HAN
2 stops26h 00m
Cathay Pacific
Mon 11/1611:15 am
HAN
-
STL
2 stops23h 44m
Cathay Pacific
Deal found 7/23$1,173
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Thu 11/126:50 pm
STL
-
HAN
2 stops39h 15m
United Airlines
Wed 11/2512:25 am
HAN
-
STL
3 stops54h 40m
United Airlines
Deal found 7/24$1,260
This Trip.com deal was found by Cheapflights users on 7/23. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/233:40 pm
STL
-
HAN
2 stops37h 25m
Multiple Airlines
Mon 1/410:10 am
HAN
-
STL
2 stops64h 35m
Multiple Airlines
Deal found 7/23$1,616

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 July 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,073
(FlightHub)

One-way from

$536
(BusinessClass)
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 July 27, 2026.
Use the filters below to find and compare flights from St. Louis to Hanoi that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sun 9/13

2:40 pm-10:00 pm

2 stops43h 20m

Hanoi Noibai

Sat 9/19

11:35 pm-2:00 pm

2 stops50h 25m

$5,285
Quickest round-trip

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Mon 9/7

3:30 pm-6:05 am

1 stop26h 35m

Hanoi Noibai

Tue 9/15

11:00 pm-1:25 pm

1 stop26h 25m

$23,454
Cheapest one-way
Quickest one-way

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Fri 10/9

7:02 am-10:00 pm

2 stops26h 58m

$536

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Fri 10/9

6:04 am-12:15 pm

3 stops42h 11m

$1,705

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/25

Sorted by cheapest first

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 July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Hanoi flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.

  • 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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