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Hanoi

$485+ 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
Mar 13 — Mar 201
Fri 3/13
Fri 3/20
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 February 11, 2026.

This oojo deal was found by Cheapflights users on 2/11. 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.
Wed 9/94:14 pm
STL
-
HAN
2 stops29h 41m
Cathay Pacific
Wed 9/237:10 pm
HAN
-
STL
2 stops36h 53m
Cathay Pacific
Deal found 2/11$901
This Cathay Pacific deal was found by Cheapflights users on 2/8. 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 4/267:12 am
STL
-
HAN
2 stops38h 43m
Multiple Airlines
Mon 5/47:10 pm
HAN
-
STL
2 stops40h 47m
Multiple Airlines
Deal found 2/8$999
This KAYAK deal was found by Cheapflights users on 2/10. 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 11/237:00 am
STL
-
HAN
2 stops46h 30m
Cathay Pacific
Fri 12/411:05 am
HAN
-
STL
2 stops25h 52m
Cathay Pacific
Deal found 2/10$1,019
This Cathay Pacific deal was found by Cheapflights users on 2/8. 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.
Fri 4/1712:27 pm
STL
-
HAN
2 stops41h 43m
Multiple Airlines
Thu 4/307:10 pm
HAN
-
STL
2 stops39h 49m
Multiple Airlines
Deal found 2/8$1,034
This United Airlines deal was found by Cheapflights users on 2/8. 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 9/278:50 am
STL
-
HAN
2 stops49h 25m
United Airlines
Thu 10/111:35 pm
HAN
-
STL
2 stops31h 03m
United Airlines
Deal found 2/8$1,045
This Orbitz deal was found by Cheapflights users on 2/9. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/107:00 am
STL
-
HAN
2 stops46h 15m
Multiple Airlines
Tue 3/1712:35 pm
HAN
-
STL
2 stops38h 16m
Multiple Airlines
Deal found 2/9$1,115
This EVA Air deal was found by Cheapflights users on 2/8. 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.
Wed 9/93:24 pm
STL
-
HAN
2 stops31h 41m
Multiple Airlines
Wed 9/236:00 pm
HAN
-
STL
3 stops33h 21m
Multiple Airlines
Deal found 2/8$1,190
This Cathay Pacific deal was found by Cheapflights users on 2/8. 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.
Wed 3/116:38 am
STL
-
HAN
2 stops39h 27m
Multiple Airlines
Sat 3/217:30 pm
HAN
-
STL
2 stops40h 28m
Multiple Airlines
Deal found 2/8$1,200
This Expedia deal was found by Cheapflights users on 2/10. 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.
Fri 5/157:56 pm
STL
-
HAN
2 stops26h 14m
Multiple Airlines
Thu 5/2111:20 pm
HAN
-
STL
2 stops25h 21m
Multiple Airlines
Deal found 2/10$1,283
This Travelocity deal was found by Cheapflights users on 2/8. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/106:41 am
STL
-
HAN
2 stops26h 44m
Multiple Airlines
Sat 12/197:10 pm
HAN
-
STL
2 stops41h 49m
Multiple Airlines
Deal found 2/8$1,306
This Ovago deal was found by Cheapflights users on 2/8. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/256:38 am
STL
-
HAN
2 stops45h 02m
Cathay Pacific
Wed 4/110:55 am
HAN
-
STL
2 stops24h 03m
Cathay Pacific
Deal found 2/8$1,331

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 February 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$999
(Cathay Pacific)

One-way from

$485
(oojo)
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 February 11, 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

Fri 4/17

12:27 pm-6:10 pm

2 stops41h 43m

Hanoi Noibai

Thu 4/30

7:10 pm-10:59 pm

2 stops39h 49m

$1,034

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Fri 4/17

12:27 pm-9:55 am

2 stops33h 28m

Hanoi Noibai

Sun 4/26

10:55 am-10:59 pm

2 stops24h 04m

$1,034

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Tue 3/10

7:00 am-5:15 pm

2 stops46h 15m

Hanoi Noibai

Tue 3/17

12:35 pm-2:51 pm

2 stops38h 16m

$1,115

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

7:30 pm-11:58 pm

2 stops40h 28m

$1,200

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sun 4/26

4:46 pm-11:05 am

2 stops30h 19m

Hanoi Noibai

Mon 5/4

6:00 pm-2:50 pm

3 stops32h 50m

$1,310

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Wed 3/25

6:38 am-3:40 pm

2 stops45h 02m

Hanoi Noibai

Wed 4/1

10:55 am-10:58 pm

2 stops24h 03m

$1,331

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-10:58 pm

2 stops23h 53m

$1,478

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Wed 3/25

4:05 pm-11:35 am

3 stops31h 30m

Hanoi Noibai

Wed 4/1

6:00 pm-3:24 pm

3 stops33h 24m

$2,081

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Tue 3/3

7:00 am-10:30 pm

2 stops26h 30m

$485

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Tue 3/3

6:38 am-10:05 am

2 stops38h 27m

$486

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/11

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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
OvagoPrice 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 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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