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Hanoi

$852+ 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 6/30. Fares are subject to change and may not be available on all flights or dates of travel.
STL — HAN
Jun 7 — Jun 141
Sun 6/7
Sun 6/14
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 May 8, 2026.

This FlightHub deal was found by Cheapflights users on 5/3. 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 10/137:00 am
STL
-
HAN
2 stops42h 55m
Multiple Airlines
Tue 11/37:10 pm
HAN
-
STL
2 stops41h 49m
Multiple Airlines
Deal found 5/3$1,071
This United Airlines deal was found by Cheapflights users on 5/3. 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 11/18:15 pm
STL
-
HAN
2 stops37h 50m
United Airlines
Wed 11/412:25 am
HAN
-
STL
2 stops33h 34m
United Airlines
Deal found 5/3$1,257
This United Airlines deal was found by Cheapflights users on 5/3. 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.
Tue 10/139:23 am
STL
-
HAN
2 stops24h 52m
United Airlines
Mon 11/212:25 am
HAN
-
STL
3 stops52h 13m
United Airlines
Deal found 5/3$1,267
This United Airlines deal was found by Cheapflights users on 5/4. 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.
Tue 10/209:23 am
STL
-
HAN
2 stops24h 52m
United Airlines
Fri 10/2311:35 pm
HAN
-
STL
2 stops31h 03m
United Airlines
Deal found 5/4$1,301
This oojo deal was found by Cheapflights users on 5/4. 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.
Thu 6/257:20 pm
STL
-
HAN
2 stops26h 35m
Cathay Pacific
Thu 7/97:10 pm
HAN
-
STL
2 stops38h 39m
Cathay Pacific
Deal found 5/4$1,582
This Etihad Airways deal was found by Cheapflights users on 5/7. 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 Etihad Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/308:57 am
STL
-
HAN
2 stops33h 43m
Multiple Airlines
Fri 7/318:40 pm
HAN
-
STL
2 stops34h 52m
Multiple Airlines
Deal found 5/7$1,879

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 May 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,071
(FlightHub)

One-way from

$852
(Delta)
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 May 8, 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

Thu 6/25

7:20 pm-9:55 am

2 stops26h 35m

Hanoi Noibai

Thu 7/9

7:10 pm-9:49 pm

2 stops38h 39m

$1,582

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Tue 6/30

2:26 pm-6:40 am

2 stops28h 14m

Hanoi Noibai

Fri 7/31

8:40 pm-8:04 pm

2 stops35h 24m

$1,879

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Thu 6/18

7:30 am-6:40 am

2 stops35h 10m

Hanoi Noibai

Wed 7/15

8:40 pm-8:04 pm

2 stops35h 24m

$1,901

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sat 6/20

2:15 pm-11:05 am

3 stops32h 50m

Hanoi Noibai

Sat 6/27

5:50 pm-12:21 pm

3 stops30h 31m

$2,104

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Thu 6/25

6:02 am-12:15 pm

2 stops42h 13m

Hanoi Noibai

Thu 7/9

11:00 pm-1:25 pm

1 stop26h 25m

$3,722

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Thu 6/18

7:56 pm-8:55 pm

2 stops36h 59m

Hanoi Noibai

Tue 7/14

11:00 pm-1:25 pm

1 stop26h 25m

$4,036

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sun 7/26

12:10 pm-10:00 pm

2 stops45h 50m

Hanoi Noibai

Sat 8/1

11:30 pm-6:42 pm

2 stops55h 12m

$5,116
Quickest round-trip

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Tue 7/14

9:23 am-10:15 pm

2 stops24h 52m

Hanoi Noibai

Fri 7/24

11:35 pm-6:13 pm

2 stops30h 38m

$15,747
Cheapest one-way
Quickest one-way

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Tue 6/30

6:30 am-9:35 pm

2 stops27h 05m

$852

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Tue 6/30

2:50 pm-10:30 am

2 stops31h 40m

$1,640

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/7

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

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 May.
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.

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

    A quick flight from St. Louis to Hanoi can take about 26h 35m. Cathay Pacific provides one of the quickest options available for as low as $1,582. 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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