$651+ Cheap flights from St. Louis (STL) to Hanoi (HAN)
This is the cheapest round-trip 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
Oct 15 — Oct 221
Round-trip
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
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Hanoi
Cheapest
Best
Last-minute
One-way
Cheapest flights from St. Louis to HanoiExplore 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 September 15, 2026.
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 September 15, 2026.
This FlightHub deal was found by Cheapflights users on 9/14. 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 11/96:00 am -
2 stops41h 20m
Mon 11/167:10 pm -
2 stops40h 05m
Deal found 9/14![Multiple Airlines logo]()
$1,057
This FlightHub deal was found by Cheapflights users on 9/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1211:01 am -
2 stops34h 49m
Sat 9/197:10 pm -
2 stops37h 34m
Deal found 9/11![Cathay Pacific logo]()
$1,162
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/97:30 am -
2 stops26h 35m
Sun 11/1512:25 am -
3 stops54h 40m
Deal found 9/11![United Airlines logo]()
$1,172
This Korean Air deal was found by Cheapflights users on 9/13. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/127:05 am -
2 stops39h 05m
Mon 11/1612:20 pm -
2 stops41h 23m
Deal found 9/13![Korean Air logo]()
$1,185
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/125:00 am -
2 stops29h 05m
Sun 11/1512:25 am -
3 stops54h 40m
Deal found 9/10![United Airlines logo]()
$1,205
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Wed 10/286:09 am -
2 stops28h 56m
Tue 11/312:25 am -
2 stops31h 58m
Deal found 9/13![United Airlines logo]()
$1,207
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/125:30 pm -
2 stops64h 45m
Sat 9/1911:35 pm -
3 stops52h 03m
Deal found 9/11![United Airlines logo]()
$1,764
Best flights from St. Louis to HanoiDiscover 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 September 15, 2026.
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 September 15, 2026.
This FlightHub deal was found by Cheapflights users on 9/14. 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 11/96:00 am -
2 stops41h 20m
Mon 11/167:10 pm -
2 stops40h 05m
Deal found 9/14![Multiple Airlines logo]()
$1,057
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Mon 11/97:30 am -
2 stops26h 35m
Sun 11/1512:25 am -
3 stops54h 40m
Deal found 9/13![United Airlines logo]()
$1,172
This Korean Air deal was found by Cheapflights users on 9/14. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/127:05 am -
2 stops39h 05m
Mon 11/1612:20 pm -
2 stops41h 23m
Deal found 9/14![Korean Air logo]()
$1,185
This Cathay Pacific deal was found by Cheapflights users on 9/13. 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 10/2811:32 am -
2 stops34h 33m
Wed 11/411:15 am -
2 stops48h 00m
Deal found 9/13![Multiple Airlines logo]()
$1,084
This FlightHub deal was found by Cheapflights users on 9/13. 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.
Sun 1/36:04 am -
2 stops41h 16m
Sun 1/317:10 pm -
2 stops36h 19m
Deal found 9/13![Multiple Airlines logo]()
$1,097
Last-minute flights from St. Louis to HanoiDiscover last-minute flight deals from St. Louis to Hanoi. Data last updated September 15, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Hanoi. Data last updated September 15, 2026 and is based on user searches.
This Cathay Pacific deal was found by Cheapflights users on 9/11. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/267:29 am -
2 stops46h 46m
Mon 11/27:25 pm -
2 stops34h 18m
Deal found 9/11![Multiple Airlines logo]()
$1,084
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Wed 10/286:09 am -
2 stops28h 56m
Tue 11/312:25 am -
2 stops31h 58m
Deal found 9/13![United Airlines logo]()
$1,207
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/284:40 pm -
1 stop25h 50m
Wed 11/411:05 pm -
2 stops52h 20m
Deal found 9/13![Multiple Airlines logo]()
$2,089
One-way flights from St. Louis to HanoiSearch for one-way flight options from St. Louis to Hanoi. Find affordable one-way fares based on user searches. Data last updated September 15, 2026.
Search for one-way flight options from St. Louis to Hanoi. Find affordable one-way fares based on user searches. Data last updated September 15, 2026.
This oojo deal was found by Cheapflights users on 9/13. 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.
Fri 10/94:42 pm -
2 stops55h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Multiple Airlines logo]()
$651
This KAYAK deal was found by Cheapflights users on 9/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/96:04 am -
2 stops39h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Cathay Pacific logo]()
$739
This Malaysia Airlines deal was found by Cheapflights users on 9/11. 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 Malaysia Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/96:04 am -
3 stops42h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Malaysia Airlines logo]()
$1,635
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 September 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,057 (FlightHub) |
One-way from | $651 (oojo) |
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 7,457,451 searches. Data last updated September 15, 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
Cheapest round-trip
Quickest round-trip
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Fri 10/9
6:04 am-9:55 am
2 stops39h 51m
Hanoi Noibai
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$739
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Fri 10/9
4:42 pm-12:15 pm
2 stops55h 33m
Hanoi Noibai
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$761
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Mon 11/9
6:00 am-12:20 pm
2 stops41h 20m
Hanoi Noibai
Mon 11/16
7:10 pm-10:15 pm
2 stops40h 05m
$1,057
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Wed 10/28
11:32 am-10:05 am
2 stops34h 33m
Hanoi Noibai
Wed 11/4
11:15 am-10:15 pm
2 stops48h 00m
$1,084
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Sun 1/3
6:04 am-12:20 pm
2 stops41h 16m
Hanoi Noibai
Sun 1/31
7:10 pm-6:29 pm
2 stops36h 19m
$1,097
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Mon 11/9
7:30 am-11:05 pm
2 stops26h 35m
Hanoi Noibai
Sun 11/15
12:25 am-6:05 pm
3 stops54h 40m
$1,172
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Thu 11/12
7:05 am-11:10 am
2 stops39h 05m
Hanoi Noibai
Mon 11/16
12:20 pm-4:43 pm
2 stops41h 23m
$1,185
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Fri 10/9
6:04 am-12:15 pm
3 stops42h 11m
Hanoi Noibai
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$1,635
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
STL-HAN
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.
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