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$369+ Cheap flights from Key Largo, FL to Vietnam

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 1/24. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — SGN
Jan 15 — Jan 221
Thu 1/15
Thu 1/22
1 adult, Economy
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Cheap flight deals from Key Largo to Vietnam

Cheapest flights from Key Largo to Vietnam
Explore the most affordable flight options available from Key Largo to Vietnam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 16, 2025.

This United Airlines deal was found by Cheapflights users on 12/16. 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 12/313:37 pmMIA - SGN
3 stops43h 18mUnited Airlines
Wed 1/2811:05 pmSGN - MIA
2 stops34h 49mUnited Airlines
Deal found 12/16$1,102
This FlightHub deal was found by Cheapflights users on 12/16. 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 12/317:15 pmMIA - SGN
2 stops51h 20mQatar Airways
Wed 1/288:55 amSGN - MIA
1 stop36h 55mQatar Airways
Deal found 12/16$1,360
This CheapOair deal was found by Cheapflights users on 12/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:15 pmMIA - SGN
1 stop29h 50mJetBlue
Wed 1/288:55 amSGN - MIA
1 stop43h 30mJetBlue
Deal found 12/16$1,366
This Ovago deal was found by Cheapflights users on 12/16. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:15 amMIA - SGN
2 stops50h 35mANA
Thu 1/811:05 pmSGN - MIA
2 stops35h 10mANA
Deal found 12/16$1,715
This FlightHub deal was found by Cheapflights users on 12/16. 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 12/177:15 pmMIA - SGN
1 stop24h 00mQatar Airways
Wed 12/247:40 pmSGN - MIA
1 stop32h 45mQatar Airways
Deal found 12/16$1,878
This FlightHub deal was found by Cheapflights users on 12/16. 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 12/317:15 pmMIA - SGN
1 stop29h 50mQatar Airways
Thu 1/88:55 amSGN - MIA
1 stop43h 30mQatar Airways
Deal found 12/16$1,980
This United Airlines deal was found by Cheapflights users on 12/16. 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 12/174:42 pmMIA - SGN
3 stops42h 13mUnited Airlines
Wed 12/2411:05 pmSGN - MIA
2 stops35h 05mUnited Airlines
Deal found 12/16$1,998
This Qatar Airways deal was found by Cheapflights users on 12/15. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/167:15 pmMIA - DAD
2 stops29h 45mMultiple Airlines
Wed 1/142:40 pmDAD - MIA
2 stops37h 45mMultiple Airlines
Deal found 12/15$2,234
This Delta deal was found by Cheapflights users on 12/15. 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.
Sat 12/206:42 pmMIA - HAN
2 stops39h 03mDelta
Sat 12/2711:05 pmHAN - MIA
2 stops36h 34mDelta
Deal found 12/15$2,310
This JetBlue deal was found by Cheapflights users on 12/15. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/267:15 pmMIA - HAN
1 stop29h 05mJetBlue
Sat 1/37:10 pmHAN - MIA
1 stop33h 15mJetBlue
Deal found 12/15$2,330
This oojo deal was found by Cheapflights users on 12/15. 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 12/266:47 pmMIA - HAN
2 stops53h 33mQatar Airways
Sat 1/37:10 pmHAN - MIA
1 stop33h 15mQatar Airways
Deal found 12/15$2,942
This Korean Air deal was found by Cheapflights users on 12/15. 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.
Sun 12/216:25 amMIA - HAN
2 stops27h 20mMultiple Airlines
Fri 1/212:20 pmHAN - MIA
2 stops24h 28mMultiple Airlines
Deal found 12/15$3,233

Find flight deals from Key Largo to Vietnam

Keep the following information in mind while searching for Key Largo to Vietnam flight deals. Data was last updated December 16, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$697
(United Airlines)

One-way from

$369
(United Airlines)

Popular in

July

Cheapest in

October

Average price

$1,615
Provider with most accurate pricing for Miami-Ho Chi Minh City flight deals.
Search Deals
Provider most trusted by Cheapflights users for Miami-Ho Chi Minh City flights.
Search Deals
From Key Largo to Vietnam
Search Deals
One-way flight from Key Largo to Vietnam
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($112 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Key Largo to Vietnam 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 December 16, 2025.
Use the filters below to find and compare flights from Key Largo to Vietnam that are best for you.

Fly from

Key Largo

Fly to

Vietnam

Route

Depart

Return

Price

MiamiHo Chi Minh City

MIA - SGN

MIASGN

Miami

Mon 1/5

9:00 am-10:55 pm

3 stops49h 55m

Ho Chi Minh City

Mon 2/2

7:30 am-10:20 pm

2 stops26h 50m

$697

MiamiHo Chi Minh City

MIA - SGN

MIASGN

Miami

Tue 1/13

4:51 pm-10:55 pm

3 stops42h 04m

Ho Chi Minh City

Tue 1/20

6:00 am-9:54 pm

3 stops27h 54m

$705

MiamiHo Chi Minh City

MIA - SGN

MIASGN

Miami

Fri 1/30

4:51 pm-10:55 pm

3 stops42h 04m

Ho Chi Minh City

Fri 2/6

6:00 am-7:51 am

2 stops37h 51m

$714

MiamiHo Chi Minh City

MIA - SGN

MIASGN

Miami

Mon 1/26

6:05 am-10:55 pm

2 stops28h 50m

Ho Chi Minh City

Thu 1/29

6:00 am-7:51 am

2 stops37h 51m

$718

MiamiHanoi

MIA - HAN

MIAHAN

Miami

Fri 4/17

7:00 am-9:35 pm

2 stops27h 35m

Hanoi Noibai

Fri 5/8

11:10 pm-2:33 pm

2 stops26h 23m

$735

MiamiHanoi

MIA - HAN

MIAHAN

Miami

Wed 4/15

7:00 am-9:35 pm

2 stops27h 35m

Hanoi Noibai

Sat 5/9

12:00 pm-8:57 pm

2 stops43h 57m

$735

MiamiHanoi

MIA - HAN

MIAHAN

Miami

Sat 4/18

6:00 am-9:35 pm

2 stops28h 35m

Hanoi Noibai

Wed 5/6

11:10 pm-3:43 pm

2 stops27h 33m

$735

MiamiHanoi

MIA - HAN

MIAHAN

Miami

Thu 4/16

8:05 am-9:35 pm

2 stops26h 30m

Hanoi Noibai

Fri 5/8

11:10 pm-3:43 pm

2 stops27h 33m

$735

MiamiHo Chi Minh City

MIA - SGN

MIASGN

Miami

Thu 1/29

4:51 pm-10:55 pm

3 stops42h 04m

Ho Chi Minh City

Thu 2/5

7:30 am-10:20 pm

2 stops26h 50m

$774

MiamiHo Chi Minh City

MIA - SGN

MIASGN

Miami

Mon 1/12

4:51 pm-10:55 pm

3 stops42h 04m

Ho Chi Minh City

Fri 2/13

6:00 am-1:48 pm

3 stops43h 48m

$795

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 55 results
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Best time to book a flight from Key Largo to Vietnam

Have a flexible travel schedule? Discover the best time to fly to Vietnam from Key Largo 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.

Cheapflights Insights

Everything you need to know about your flight from Key Largo to Vietnam

What is the cheapest month to book a flight from Key Largo to Vietnam?

Currently, March is the cheapest month in which you can book a flight from Key Largo to Vietnam (average of $590). Flying from Key Largo to Vietnam in June is currently the most expensive (average of $1,269). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from KE9 to VN?

Find hourly flight availability from Key Largo to Vietnam. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 16, 2025.

When flying from Key Largo to Vietnam, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 15% versus a flight in the afternoon.

Reviews of airlines servicing Vietnam

Get insights into the airlines that provide service to Vietnam. 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 Vietnam. Reviews last updated December 16, 2025.
Read reviews from past customers who have flown China Airlines, Qatar Airways, and United Airlines from Key Largo to Vietnam. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
China Airlines
8.3
Very good
792 reviews

Comfort

8.0

Overall

8.3

Entertainment

8.0

Food

7.8

Crew

8.5

Boarding

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

TPE - SFO

China Airlines has horrible customer services. The flight I was taking had many empty seats, but I got rejected many services with the excuses that the flight is fully booked. 1. When I was checking in at the front dest to request the seat together with my husband, I was told that the flight was fully booked. We need to pay almost extra $200 per person to sit together. 2. When I tried to use the VIP lounge with my mileage points, I was rejected. The reason was that the flight was fully booked.
China Airlines
8.3
Very good
792 reviews
China Airlines
8.3
Very good
792 reviews

Comfort

8.0

Overall

8.3

Entertainment

8.0

Food

7.8

Crew

8.5

Boarding

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

TPE - SFO

China Airlines has horrible customer services. The flight I was taking had many empty seats, but I got rejected many services with the excuses that the flight is fully booked. 1. When I was checking in at the front dest to request the seat together with my husband, I was told that the flight was fully booked. We need to pay almost extra $200 per person to sit together. 2. When I tried to use the VIP lounge with my mileage points, I was rejected. The reason was that the flight was fully booked.
Qatar Airways
7.4
Good
3,683 reviews
China Airlines
8.3
Very good
792 reviews

Comfort

8.0

Overall

8.3

Entertainment

8.0

Food

7.8

Crew

8.5

Boarding

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

TPE - SFO

China Airlines has horrible customer services. The flight I was taking had many empty seats, but I got rejected many services with the excuses that the flight is fully booked. 1. When I was checking in at the front dest to request the seat together with my husband, I was told that the flight was fully booked. We need to pay almost extra $200 per person to sit together. 2. When I tried to use the VIP lounge with my mileage points, I was rejected. The reason was that the flight was fully booked.
United Airlines
7.4
Good
9,094 reviews
China Airlines
8.3
Very good
792 reviews

Comfort

8.0

Overall

8.3

Entertainment

8.0

Food

7.8

Crew

8.5

Boarding

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

TPE - SFO

China Airlines has horrible customer services. The flight I was taking had many empty seats, but I got rejected many services with the excuses that the flight is fully booked. 1. When I was checking in at the front dest to request the seat together with my husband, I was told that the flight was fully booked. We need to pay almost extra $200 per person to sit together. 2. When I tried to use the VIP lounge with my mileage points, I was rejected. The reason was that the flight was fully booked.
Turkish Airlines
7.3
Good
4,102 reviews
China Airlines
8.3
Very good
792 reviews

Comfort

8.0

Overall

8.3

Entertainment

8.0

Food

7.8

Crew

8.5

Boarding

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

TPE - SFO

China Airlines has horrible customer services. The flight I was taking had many empty seats, but I got rejected many services with the excuses that the flight is fully booked. 1. When I was checking in at the front dest to request the seat together with my husband, I was told that the flight was fully booked. We need to pay almost extra $200 per person to sit together. 2. When I tried to use the VIP lounge with my mileage points, I was rejected. The reason was that the flight was fully booked.
American Airlines
7.2
Good
11,047 reviews
China Airlines
8.3
Very good
792 reviews

Comfort

8.0

Overall

8.3

Entertainment

8.0

Food

7.8

Crew

8.5

Boarding

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Dec 2025

TPE - SFO

China Airlines has horrible customer services. The flight I was taking had many empty seats, but I got rejected many services with the excuses that the flight is fully booked. 1. When I was checking in at the front dest to request the seat together with my husband, I was told that the flight was fully booked. We need to pay almost extra $200 per person to sit together. 2. When I tried to use the VIP lounge with my mileage points, I was rejected. The reason was that the flight was fully booked.

Related info for your journey

Find useful and relevant information for your journey from Key Largo to Vietnam. 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 Key Largo to Vietnam?

    There are many flights that can get you from Key Largo to Vietnam in 27h 35m. Fly via United Airlines, Korean Air, or Delta to get the fastest option. Key Largo and Vietnam are separated by a distance of 9156 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Key Largo to Vietnam one-way?

    $444 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on United Airlines and Qatar Airways, with prices starting from $482 and $557, respectively.

  • What are the most popular routes from Key Largo to Vietnam?

    The most popular route from Key Largo to Vietnam is Miami - Ho Chi Minh City. You may also consider Miami - Hanoi Noibai or Miami - Da Nang.

  • Can I find deals for flights from Key Largo to Vietnam that include hotel bookings?

    Yes. In addition to deals on Key Largo to Vietnam flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Key Largo to Vietnam?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Key Largo to Vietnam.

  • Can I find deals for business class flights from Key Largo to Vietnam?

    Yes. Cheapflights offers flight deals from Key Largo to Vietnam by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Key Largo to Vietnam?

    Currently, March is the cheapest month in which you can book a flight from Key Largo to Vietnam (average of $590). Flying from Key Largo to Vietnam in June is currently the most expensive (average of $1,269). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Top 10 airlines flying from Key Largo to Vietnam

Discover the top 10 airlines that operate flights from Key Largo to Vietnam. 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 2,558,603 searches. Data last updated December 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$713Average$1,084FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$742Average$1,308FlexibilityNo cancel feeOn-time71%
ANACheapest$837Average$1,147FlexibilityNo cancel feeOn-time80%
EVA AirCheapest$887Average$1,188FlexibilityNo cancel feeOn-time74%
China AirlinesCheapest$921Average$1,360FlexibilityNo cancel feeOn-time70%
Korean AirCheapest$949Average$1,366FlexibilityNo cancel feeOn-time81%
Qatar AirwaysCheapest$974Average$1,508FlexibilityNo cancel feeOn-time68%
Air CanadaCheapest$1,079Average$1,361FlexibilityNo cancel feeOn-time67%
DeltaCheapest$1,110Average$1,502FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$1,156Average$1,444FlexibilityNo cancel feeOn-time77%

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