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Find cheap flights from St. Louis to Vietnam from $664

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Vietnam departing on 9/19. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Fri 6/7
Fri 6/14

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Best Vietnam Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Ho Chi Minh City
Ho Chi Minh City2 stops$1,172
Hanoi
Hanoi2 stops$1,418

Good to know

Low season

December

High season

January

Cheapest flight

$664
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly and prices are also 14% lower on average.
Flight from St. Louis to Hanoi

FAQs - booking Vietnam flights

  • How does KAYAK find such low prices on flights from St. Louis to Vietnam?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Vietnam.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Vietnam?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Vietnam from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Vietnam?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Vietnam with an airline and back to St. Louis with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Vietnam?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Vietnam from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Vietnam

  • Morning departure is around 4% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from St. Louis to Vietnam

 
Need help choosing which airline to fly with from St. Louis to Vietnam? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.4
ANAOverall score based on 928 reviews
8.8Crew
7.8Food
8.0Entertainment
8.6Boarding
8.3Comfort
Airline reviews

Flying with ANA is always a breeze. Seats are very comfortable.

10.0 ExcellentAnonymous, Apr 2024NRT - LAX
Read more about ANA reviews

Flying with ANA is always a breeze. Seats are very comfortable.

Flight was on time and the crew was as expected, friendly and respectful. Food could’ve been better though.

First I will say this was really NOT an ANA flight. ANA used a UNITED jet to perform this flight. I specifically booked with ANA because I did NOT WANT TO FLY UNITED FOR INTERNATIONAL FLIGHTS. So to spend $1800.00 and then discover after booking that it was going to be handled by United was very disappointing. I will be more careful next time when I book. The interior was very cramped in economy class; the dinner meal was terrible and also had extremely small portions for an international flight - the bread roll was ice cold and stale - that salad was very wilted; I’ve never had a “snack” that was so salty that it was difficult to eat; the breakfast “waffle” was practically unrecognizable. Really horrible meals for a very expensive international flight. Bathroom floor was also pretty dirty. I’m hoping my return flight is a real ANA airplane that is cleaned and serviced by ANA personnel with ANA meals. I will never book with ANA again if they continue to use UNITED airline jets. Yuck!!!🤢

This is a very long flight and the first time I have flown on a Japanese airline. I was very impressed with the staff. They worked hard and offered food and drink regularly. Plane was very well cared for. The let room was good . Food was ok but better than other airlines.

It was very nice. I was a bit disappointed by the few meal services. There were probably more drink services that I missed while sleeping, but I would have liked the crew to bring more than one drink service before landing and to bring more than one drink service and coffee service after take off

I wish the serve should leach and drink. Maybe because only 2hr

It was ok I thought because my flight was 1pm i was expecting to have lunch but it didn’t and after 7 hr finally dinner time was only chicken sandwich and next breakfast was an hour before plane land in Tokyo. so I should bring some food with me. Japanese flight attend was nice but the other was chewing gum and how she ask and respond to customers was not professional I felt. Maybe because Japan flight attendant is highly train and everyone looked very dress and professional so I was kind disappointed. I like that the bathroom was very clean .

Seat was roomy enough . The Asian selection for a meal was good . The tortellini was not very good. Service was excellent. O

It was very good. Lots of room with superior food and service. I will not hesitate to fly ANA in the future!

Lovely airport at Haneda. Great food selection. Spacious and private boarding area with dedicated bathroom for each gate.

I like the braised beef., miso soup,, and green tea. Very little choices of hollywood movies. The PA announcement in English was not very clear and very soft. I could hardly hear.

More updated movies & Chinese movies. The food sometimes overcooked. Prefer to have more neat snacks in between than just choose from the menu. Please change the menu every now and then. This is my second time flying within one year and the menu didn’t change at all!

Food is lagging. Very poor choice. Like vending machine fast food.

Please change the menu more often. The beef is not tender, more choice in ice cream flavor. Dessert is not good too.

First of all I had dozed off. And when I woke up, my food was on a tray without telling me the food was there or asking me if I wanted something to drink. They never came back to ask me if I wanted anything to drink and I tried to stop them several times. I personally have a problem swallowing food without something to drink with it. so therefore I could not eat., second thing for the entertainment. There was no place to plug the headset in because the tip had been broken off into the monitor to where you couldn’t even watch a movie or hear any music that was annoying .

Again I paid for an upgrade on my credit card didn’t get it need a refund. . American I not good at gettin in contact for refunds.

I didn’t like the check in process I had to check in at the counter took too much time . Didn’t give the upgrade my seat .

l enjoyed the variety of good and drink choices. The flight attendants were very quick and efficient to our needs.

-Bathrooms were regularly checked/maintained. -Food was okay, but the miso soup was good. -Top of my foot got bitten by a bug when I took off my shoes and was only wearing my socks. It was swollen and very itchy for several days.

Truly impressive service in the air. After the main meal, they have a delicious a la carte menu that you can order anytime until 1.5 hrs prior to landing. Flight crew were so pleasant and very efficient. Wish I could fly JAL more often!

West Jet has a horrible boarding process and the seats have no cushion.

Everything went smoothly. I didn’t like that when I booked in the main cabin my wife and I weren’t seated together. One would think when booking on an option that allows picking your seat. They would put you and your travel partner together. Had to call to get it sorted. They did fix.

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

Very frustrated with boarding gate crew. She announced the plane was small and they would be limiting us to one item to carry on. Not a problem for me as I understand the tiny planes have limited space!! Not the case here! It was a rather large plane and had plenty of room for bags! So because I don’t want to be one of “those people” who ignores the request to check a carry on I did so asking if I would be able to pick it up at the bottom of the ramp on arrival in Knoxville to which she responded “yes”! Then I watched as every other passenger held onto their 2 items and boarded!! Then when we arrived in Knoxville our 2 carry ons had been put with all the other luggage and we had to go to baggage pick up and wait for all the big checked bags to come off the carousel! So she lied!! Frustrating. Next time I won’t be so nice!

It was a good experience except when boarding a female flight attendant did not go out of her way to assist my teenage daughters in finding space for their carry-ons after their compartments were full.

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

Checking in at the airport the agent only booked the first keg of my trip and had my checked luggage going to the airport with a layover! Never was issued a boarding pass for the second leg or received sticker fir my checked bag. All was well in the end! Delta agents helped to resolve the situation!!!

Delayed due to an ill passenger after loading. Not preventable on Delta's part. Was in first class. The seats are becoming worn and detaching from their velcro attachments. Only got snacks on flight. The attendant was not the friendliest.

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

Big plane, long flight, absolutely no leg room and basically non existent air! I am 5”4’ and always travel Main Cabin, I was miserable on this plane and could barely move when we arrived in Cabo due to the cramped leg area!

Flight was delayed 2.5 hours - a big deal on an overnight when you plan to sleep.

I feel like they have upgraded the app since I last flew United and I found it to be super helpful. I had stopped flying United unless absolutely necessary and my experience on this trip indicates they have been working hard to improve their services.

Surprisingly easy! I was hesitant to try this, but the cost swayed me. I actually felt like I had less stress than all the taxiing and possible delays that occur with short regional flights where you spend less time in the air than getting to and from the plane..

This flight was delayed multiple times and eventually canceled around 2-3ish. Original take off time was around 10:30am. By 3, there were no other options out of Houston, so stuck in Houston for from 3pm - 11am the next day.

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

The plane was dirty and the in seat air wasn't blowing as planes usually do.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

All flights were on time and boarding was issue free

Even though we left CMI late, we mostly made up the time.

Delayed almost 4 hours for a 45 minute flight with no explanation.

Again, multiple delays and I eventually just canceled and drove!

Great crew. Very comfortable business seats with nice bedding. Good food. We were delayed to let late passengers on the flight, but otherwise great experience.

Great crew. We were delayed so that late passengers could get on the flight. Love the bedding in business class. Good food. Great experience.

The CX617 from HK to BKK was delayed more than 1.5 hours.

Horrible - they lied to me about baggage & boarding, even though I specifically spoke to their agents the day before my flight about my issue. When I showed up they did not let me board and stranded me at my airport until I bought a new flight with money I did not have to spend.

I was in business class. There was an excellent headset. But half an hour before arrival they collected them! The rest of the trip I had to use a cheap earphone. There must be a better way to protect the headphones.

All four American Airlines flights I took in last seven days were delayed. Caused me loads of problems, missed meetings, loss of time and money.

American cancelled our flight home. Zero option for hotel, alternative transportation and took 3 hours to find our bags so we could take a 3 hour UBER ride home on our dime. Never flying AA again.

Book cheap flights from St. Louis to Vietnam

Recent round-trip flight deals

8/21Wed
2 stops
31h 21mSTL-SGN
10/22Tue
2 stops
33h 33mSGN-STL
$1,172
8/20Tue
2 stops
31h 21mSTL-SGN
9/21Sat
2 stops
33h 38mSGN-STL
$1,212
8/7Wed
2 stopsUnited Airlines
47h 06mSTL-SGN
10/13Sun
2 stopsUnited Airlines
35h 07mSGN-STL
$1,278
8/20Tue
3 stopsUnited Airlines
40h 07mSTL-SGN
9/20Fri
2 stopsUnited Airlines
33h 02mSGN-STL
$1,279
10/3Thu
2 stopsDelta
40h 25mSTL-HAN
10/7Mon
2 stopsDelta
21h 16mHAN-STL
$1,479
8/5Mon
2 stopsDelta
39h 50mSTL-SGN
8/19Mon
2 stopsDelta
35h 54mSGN-STL
$1,509
8/2Fri
2 stopsJapan Airlines
34h 46mSTL-SGN
8/15Thu
2 stopsJapan Airlines
35h 32mSGN-STL
$1,625
7/23Tue
2 stopsJapan Airlines
35h 11mSTL-SGN
8/5Mon
2 stopsJapan Airlines
35h 32mSGN-STL
$1,645
6/23Sun
2 stopsANA
29h 30mSTL-SGN
7/6Sat
2 stopsANA
51h 33mSGN-STL
$2,113
6/23Sun
2 stopsANA
29h 30mSTL-SGN
7/5Fri
2 stopsANA
52h 13mSGN-STL
$2,761

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Recent one-way flight deals

9/19Thu
2 stopsCathay Pacific
46h 35mSTL-HAN
$664
10/2Wed
2 stops
31h 45mSTL-HAN
$668
8/6Tue
2 stopsDelta
27h 20mSTL-SGN
$676
9/12Thu
2 stopsAmerican Airlines
33h 31mSTL-SGN
$678
9/19Thu
3 stops
45h 05mSTL-HAN
$680
8/6Tue
3 stops
42h 15mSTL-SGN
$706
10/2Wed
3 stops
46h 24mSTL-HAN
$708
9/12Thu
3 stops
27h 32mSTL-SGN
$793
10/2Wed
1 stop
26h 40mSTL-HAN
$5,243

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Last minute flights from St. Louis to Vietnam

Last minute flight, train and bus deals

5/9Thu
multi-stopUnited Airlines
24h 58mSTL-SGN
5/16Thu
multi-stopUnited Airlines
35h 10mSGN-STL
$1,121
5/11Sat
multi-stopUnited Airlines
44h 25mSTL-SGN
5/19Sun
multi-stopUnited Airlines
26h 09mSGN-STL
$1,129
5/11Sat
multi-stop
34h 57mSTL-SGN
5/19Sun
multi-stop
33h 09mSGN-STL
$2,027
5/11Sat
multi-stop
44h 05mSTL-SGN
5/18Sat
multi-stop
35h 49mSGN-STL
$2,301
5/9Thu
multi-stop
27h 35mSTL-SGN
5/15Wed
multi-stop
35h 49mSGN-STL
$2,389
5/10Fri
multi-stop
26h 35mSTL-DAD
5/11Sat
multi-stop
31h 49mDAD-STL
$4,032
5/10Fri
multi-stop
26h 35mSTL-DAD
5/12Sun
multi-stop
36h 54mDAD-STL
$4,542
5/9Thu
multi-stopAmerican Airlines
31h 32mSTL-SGN
5/16Thu
multi-stopAmerican Airlines
27h 15mSGN-STL
$5,042
5/11Sat
multi-stopAmerican Airlines
26h 15mSTL-SGN
5/19Sun
multi-stopAmerican Airlines
25h 47mSGN-STL
$5,089
5/10Fri
multi-stop
35h 44mSTL-DAD
5/12Sun
multi-stop
56h 56mDAD-STL
$5,555

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St. Louis - Vietnam Flights

Departure:

St. Louis (STL)United States

Return flight deals:

Vietnam - St. Louis

Cabin classes: