$943+ 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 12/23. Fares are subject to change and may not be available on all flights or dates of travel.
STL — HAN
Nov 29 — Dec 61
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 October 30, 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 October 30, 2026.
This Cathay Pacific deal was found by Cheapflights users on 10/26. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/96:00 am -
2 stops44h 45m
Mon 11/1610:30 am -
2 stops26h 03m
Deal found 10/26![Multiple Airlines logo]()
$1,129
This Korean Air deal was found by Cheapflights users on 10/25. 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.
Mon 11/97:13 am -
2 stops38h 57m
Mon 11/1612:20 pm -
2 stops41h 23m
Deal found 10/25![Korean Air logo]()
$1,173
This Cathay Pacific deal was found by Cheapflights users on 10/27. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:00 am -
2 stops44h 45m
Mon 11/1610:30 am -
2 stops22h 49m
Deal found 10/27![Cathay Pacific logo]()
$1,174
This Korean Air deal was found by Cheapflights users on 10/25. 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 11/127:18 pm -
2 stops50h 52m
Mon 11/1612:20 pm -
2 stops38h 03m
Deal found 10/25![Korean Air logo]()
$1,183
This KAYAK deal was found by Cheapflights users on 10/28. 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 11/97:06 pm -
2 stops31h 39m
Mon 11/167:25 pm -
2 stops37h 54m
Deal found 10/28![Cathay Pacific logo]()
$1,188
This FlightHub deal was found by Cheapflights users on 10/29. 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 12/88:02 am -
2 stops50h 13m
Sun 12/2012:35 am -
2 stops30h 43m
Deal found 10/29![ANA logo]()
$1,255
This American Airlines deal was found by Cheapflights users on 10/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/55:00 am -
2 stops28h 25m
Fri 12/1811:55 pm -
2 stops32h 07m
Deal found 10/29![American Airlines logo]()
$1,318
This Delta deal was found by Cheapflights users on 10/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/117:03 am -
2 stops39h 07m
Fri 12/1811:05 pm -
2 stops30h 23m
Deal found 10/26![Delta logo]()
$1,578
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 October 30, 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 October 30, 2026.
This Cathay Pacific deal was found by Cheapflights users on 10/26. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/96:00 am -
2 stops44h 45m
Mon 11/1610:30 am -
2 stops26h 03m
Deal found 10/26![Multiple Airlines logo]()
$1,129
This Korean Air deal was found by Cheapflights users on 10/25. 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.
Mon 11/97:13 am -
2 stops38h 57m
Mon 11/1612:20 pm -
2 stops41h 23m
Deal found 10/25![Korean Air logo]()
$1,173
This Cathay Pacific deal was found by Cheapflights users on 10/27. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:00 am -
2 stops44h 45m
Mon 11/1610:30 am -
2 stops22h 49m
Deal found 10/27![Cathay Pacific logo]()
$1,174
This FlightHub deal was found by Cheapflights users on 10/29. 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 12/88:02 am -
2 stops50h 13m
Sun 12/2012:35 am -
2 stops30h 43m
Deal found 10/29![ANA logo]()
$1,255
This American Airlines deal was found by Cheapflights users on 10/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/55:00 am -
2 stops28h 25m
Fri 12/1811:55 pm -
2 stops32h 07m
Deal found 10/29![American Airlines logo]()
$1,318
This United Airlines deal was found by Cheapflights users on 10/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/111:17 pm -
3 stops44h 58m
Sun 1/1712:35 am -
2 stops46h 15m
Deal found 10/27![United Airlines logo]()
$1,363
This Korean Air deal was found by Cheapflights users on 10/25. 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 11/127:18 pm -
2 stops50h 52m
Mon 11/1612:20 pm -
2 stops38h 03m
Deal found 10/25![Korean Air logo]()
$1,183
This KAYAK deal was found by Cheapflights users on 10/28. 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 11/97:06 pm -
2 stops31h 39m
Mon 11/167:25 pm -
2 stops37h 54m
Deal found 10/28![Cathay Pacific logo]()
$1,188
Last-minute flights from St. Louis to HanoiDiscover last-minute flight deals from St. Louis to Hanoi. Data last updated October 30, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Hanoi. Data last updated October 30, 2026 and is based on user searches.
This Cathay Pacific deal was found by Cheapflights users on 10/26. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/96:00 am -
2 stops44h 45m
Mon 11/1610:30 am -
2 stops26h 03m
Deal found 10/26![Multiple Airlines logo]()
$1,129
This Korean Air deal was found by Cheapflights users on 10/25. 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.
Mon 11/97:13 am -
2 stops38h 57m
Mon 11/1612:20 pm -
2 stops41h 23m
Deal found 10/25![Korean Air logo]()
$1,173
This KAYAK deal was found by Cheapflights users on 10/28. 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 11/97:06 pm -
2 stops31h 39m
Mon 11/167:25 pm -
2 stops37h 54m
Deal found 10/28![Cathay Pacific logo]()
$1,188
This Cathay Pacific deal was found by Cheapflights users on 10/27. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:00 am -
2 stops44h 45m
Mon 11/1610:30 am -
2 stops22h 49m
Deal found 10/27![Cathay Pacific logo]()
$1,174
This Korean Air deal was found by Cheapflights users on 10/25. 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 11/127:18 pm -
2 stops50h 52m
Mon 11/1612:20 pm -
2 stops38h 03m
Deal found 10/25![Korean Air logo]()
$1,183
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 October 30, 2026.
Search for one-way flight options from St. Louis to Hanoi. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/25. 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 12/234:21 pm -
3 stops41h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Multiple Airlines logo]()
$943
This Kiwi.com deal was found by Cheapflights users on 10/25. 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.
Tue 12/225:37 pm -
3 stops39h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Multiple Airlines logo]()
$995
This Alaska Airlines deal was found by Cheapflights users on 10/25. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/234:32 pm -
2 stops53h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Alaska Airlines logo]()
$1,067
This Alaska Airlines deal was found by Cheapflights users on 10/25. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/224:32 pm -
2 stops53h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Alaska Airlines logo]()
$1,219
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Sun 12/205:37 pm -
3 stops39h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Multiple Airlines logo]()
$1,230
This Delta deal was found by Cheapflights users on 10/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/207:46 pm -
2 stops36h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Delta logo]()
$1,289
This BusinessClass deal was found by Cheapflights users on 10/25. 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 12/233:40 pm -
1 stop25h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Vietnam Airlines logo]()
$14,885
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 October 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,129 (Cathay Pacific) |
One-way from | $943 (Kiwi.com) |
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 October 30, 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
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Tue 12/22
5:37 pm-10:25 pm
3 stops39h 48m
Hanoi Noibai
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$995
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Wed 12/23
4:32 pm-11:10 am
2 stops53h 38m
Hanoi Noibai
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$1,067
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Mon 11/9
6:00 am-3:45 pm
2 stops44h 45m
Hanoi Noibai
Mon 11/16
10:30 am-11:33 pm
2 stops26h 03m
$1,129
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Mon 11/9
7:13 am-11:10 am
2 stops38h 57m
Hanoi Noibai
Mon 11/16
12:20 pm-4:43 pm
2 stops41h 23m
$1,173
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Thu 11/12
6:00 am-3:45 pm
2 stops44h 45m
Hanoi Noibai
Mon 11/16
10:30 am-8:19 pm
2 stops22h 49m
$1,174
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Thu 11/12
7:18 pm-11:10 am
2 stops50h 52m
Hanoi Noibai
Mon 11/16
12:20 pm-1:23 pm
2 stops38h 03m
$1,183
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Mon 11/9
7:06 pm-3:45 pm
2 stops31h 39m
Hanoi Noibai
Mon 11/16
7:25 pm-8:19 pm
2 stops37h 54m
$1,188
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Tue 12/22
4:32 pm-11:10 am
2 stops53h 38m
Hanoi Noibai
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$1,219
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Sun 12/20
5:37 pm-10:25 pm
3 stops39h 48m
Hanoi Noibai
Wed 12/31
12:00 am-10:00 am
Nonstop0h 00m
$1,230
St. LouisHanoi
STL Lambert-St Louis - HAN Hanoi Noibai
STLHAN
Lambert-St Louis
Tue 12/8
8:02 am-11:15 pm
2 stops50h 13m
Hanoi Noibai
Sun 12/20
12:35 am-6:18 pm
2 stops30h 43m
$1,255
Showing 1-10 of 15 resultsSorted 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 October.
| 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 | |
| Price Accuracy2 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.
Reviews of airlines servicing Hanoi
Get insights into the airlines that provide service to Hanoi. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Hanoi. Reviews last updated October 30, 2026.
Get a feel of what it's like to fly with Japan Airlines from St. Louis to Hanoi by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.8
Food
7.7
Overall
8.3
Boarding
8.4
Comfort
8.2
Crew
8.7
Reviews
1 / 20
4.0
OkayClark,Aug 2026
BDL - ORD
Entertainment
7.8
Food
7.7
Overall
8.3
Boarding
8.4
Comfort
8.2
Crew
8.7
Reviews
1 / 20
4.0
OkayClark,Aug 2026
BDL - ORD
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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Complete your trip
Complete your trip to Hanoi by adding a car rental and/or hotel reservation to your travel itinerary.
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Other flights to Hanoi
Explore flights to Hanoi departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 30, 2026.
St. Louis and Hanoi flights
Browse other St. Louis and Hanoi flight options. Last updated on October 30, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on October 30, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top airline flying from St. Louis to Hanoi
Discover the top airline that operate flights from St. Louis to Hanoi. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$1,013 | Average$1,266 | FlexibilityNo cancel fee | On-time79% |