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Hanoi

$599+ 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
Jun 20 — Jun 271
Sat 6/20
Sat 6/27
1 adult, Economy
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Find cheap flights from St. Louis to Hanoi with Cheapflights

1. Tell us where you want to go

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2. Select your favorite providers

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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 21, 2026.

This FlightHub deal was found by Cheapflights users on 5/20. 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.
Wed 11/47:00 am
STL
-
HAN
2 stops34h 55m
Multiple Airlines
Thu 3/258:55 am
HAN
-
STL
2 stops50h 49m
Multiple Airlines
Deal found 5/20$1,073
This FlightHub deal was found by Cheapflights users on 5/20. 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 11/37:00 am
STL
-
HAN
2 stops47h 45m
Multiple Airlines
Thu 3/258:55 am
HAN
-
STL
2 stops50h 49m
Multiple Airlines
Deal found 5/20$1,076
This FlightHub deal was found by Cheapflights users on 5/20. 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.
Wed 11/47:00 am
STL
-
HAN
2 stops34h 55m
Multiple Airlines
Sat 3/277:10 pm
HAN
-
STL
2 stops40h 34m
Multiple Airlines
Deal found 5/20$1,111
This FlightHub deal was found by Cheapflights users on 5/20. 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 11/37:00 am
STL
-
HAN
2 stops34h 55m
Multiple Airlines
Sat 3/277:10 pm
HAN
-
STL
2 stops40h 34m
Multiple Airlines
Deal found 5/20$1,164
This BusinessClass deal was found by Cheapflights users on 5/20. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/41:20 pm
STL
-
HAN
2 stops28h 35m
Qatar Airways
Tue 3/231:45 am
HAN
-
STL
2 stops33h 59m
Qatar Airways
Deal found 5/20$1,193
This KAYAK deal was found by Cheapflights users on 5/20. 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 11/27:00 am
STL
-
HAN
2 stops34h 55m
Qatar Airways
Mon 3/297:30 pm
HAN
-
STL
2 stops40h 14m
Qatar Airways
Deal found 5/20$1,201
This KAYAK deal was found by Cheapflights users on 5/20. 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 11/27:00 am
STL
-
HAN
2 stops34h 55m
Qatar Airways
Thu 3/258:55 am
HAN
-
STL
2 stops50h 49m
Qatar Airways
Deal found 5/20$1,203
This KAYAK deal was found by Cheapflights users on 5/20. 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.
Tue 11/37:00 am
STL
-
HAN
2 stops47h 45m
Qatar Airways
Tue 3/238:55 am
HAN
-
STL
2 stops50h 49m
Qatar Airways
Deal found 5/20$1,206
This KAYAK deal was found by Cheapflights users on 5/20. 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.
Fri 11/67:00 am
STL
-
HAN
2 stops34h 55m
Qatar Airways
Mon 3/297:30 pm
HAN
-
STL
2 stops40h 14m
Qatar Airways
Deal found 5/20$1,241
This KAYAK deal was found by Cheapflights users on 5/20. 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.
Fri 11/67:00 am
STL
-
HAN
2 stops34h 55m
Qatar Airways
Thu 3/258:55 am
HAN
-
STL
2 stops50h 49m
Qatar Airways
Deal found 5/20$1,243
This KAYAK deal was found by Cheapflights users on 5/20. 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 11/27:00 am
STL
-
HAN
2 stops34h 55m
Qatar Airways
Thu 3/251:45 am
HAN
-
STL
2 stops33h 59m
Qatar Airways
Deal found 5/20$1,261
This KAYAK deal was found by Cheapflights users on 5/20. 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.
Sun 11/17:00 am
STL
-
HAN
2 stops47h 45m
Qatar Airways
Mon 3/297:30 pm
HAN
-
STL
2 stops40h 14m
Qatar Airways
Deal found 5/20$1,263

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 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,073
(FlightHub)

One-way from

$599
(FlightHub)
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 21, 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

Wed 11/4

7:00 am-6:55 am

2 stops34h 55m

Hanoi Noibai

Fri 3/26

8:55 am-11:44 pm

2 stops50h 49m

$1,073

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sat 11/7

7:00 am-6:55 am

2 stops34h 55m

Hanoi Noibai

Tue 3/23

8:55 am-11:44 pm

2 stops50h 49m

$1,243

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Wed 11/4

7:00 am-6:55 am

2 stops34h 55m

Hanoi Noibai

Mon 3/29

7:30 pm-11:44 pm

2 stops40h 14m

$1,261

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sun 11/1

8:15 pm-11:05 pm

2 stops37h 50m

Hanoi Noibai

Wed 11/4

12:25 am-5:53 pm

2 stops30h 28m

$1,286

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Mon 9/21

3:33 pm-1:55 pm

2 stops34h 22m

Hanoi Noibai

Fri 9/25

7:30 pm-8:03 pm

2 stops36h 33m

$1,450

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sun 11/1

3:23 pm-6:55 am

2 stops26h 32m

Hanoi Noibai

Thu 11/5

7:10 pm-4:40 pm

2 stops34h 30m

$1,450

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sat 6/13

6:00 am-10:15 pm

2 stops28h 15m

Hanoi Noibai

Sat 6/20

11:35 pm-11:35 pm

2 stops36h 00m

$1,844

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Sat 6/13

6:00 am-10:15 pm

2 stops28h 15m

Hanoi Noibai

Sat 6/20

11:35 pm-11:35 pm

2 stops36h 00m

$1,896

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Mon 6/15

2:15 pm-10:30 am

3 stops32h 15m

Hanoi Noibai

Sun 6/21

5:50 pm-12:21 pm

3 stops30h 31m

$2,705
Quickest round-trip

St. LouisHanoi

STL - HAN

STLHAN

Lambert-St Louis

Fri 6/19

1:20 pm-4:45 am

2 stops27h 25m

Hanoi Noibai

Thu 6/25

6:00 pm-12:21 pm

3 stops30h 21m

$2,839

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/16

Showing 1-10 of 13 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 34h 55m. Qatar Airways provides one of the quickest options available for as low as $1,243. 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.

See more FAQs

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Alternative routes for St. Louis to Hanoi

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