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$1,201+ Cheap flights from Portland, ME (PWM) to Vietnam

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 3/17. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SGN
Mar 7 — Mar 141
Sat 3/7
Sat 3/14
1 adult, Economy
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Cheap flight deals from Portland to Vietnam

Cheapest flights from Portland to Vietnam
Explore the most affordable flight options available from Portland to Vietnam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 5, 2026.

This United Airlines deal was found by Cheapflights users on 2/5. 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.
Tue 3/175:45 am
PWM
-
SGN
3 stops54h 10m
United Airlines
Fri 4/107:00 am
SGN
-
PWM
3 stops49h 40m
United Airlines
Deal found 2/5$1,201
This Cathay Pacific deal was found by Cheapflights users on 2/3. 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.
Tue 3/176:17 am
PWM
-
SGN
2 stops41h 18m
Multiple Airlines
Fri 4/106:55 am
SGN
-
PWM
2 stops27h 32m
Multiple Airlines
Deal found 2/3$1,214
This Cathay Pacific deal was found by Cheapflights users on 2/3. 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 3/25:40 pm
PWM
-
SGN
2 stops42h 40m
Multiple Airlines
Mon 3/231:50 pm
SGN
-
PWM
2 stops44h 47m
Multiple Airlines
Deal found 2/3$1,388
This United Airlines deal was found by Cheapflights users on 2/3. 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 3/22:10 pm
PWM
-
SGN
3 stops44h 45m
United Airlines
Mon 3/236:00 am
SGN
-
PWM
3 stops68h 14m
United Airlines
Deal found 2/3$1,433
This United Airlines deal was found by Cheapflights users on 2/2. 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 2/44:10 pm
PWM
-
SGN
3 stops42h 45m
United Airlines
Sun 2/811:05 pm
SGN
-
PWM
2 stops27h 26m
United Airlines
Deal found 2/2$1,447
This Korean Air deal was found by Cheapflights users on 2/3. 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.
Wed 2/42:35 pm
PWM
-
SGN
2 stops44h 45m
Korean Air
Sun 2/811:50 pm
SGN
-
PWM
2 stops34h 37m
Korean Air
Deal found 2/3$2,057

Find flight deals from Portland to Vietnam

Keep the following information in mind while searching for Portland to Vietnam flight deals. Data was last updated February 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,103
(United Airlines)
Provider with most accurate pricing for Portland-Ho Chi Minh City flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Ho Chi Minh City flights.
Search Deals
From Portland to Vietnam
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland 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 February 5, 2026.
Use the filters below to find and compare flights from Portland to Vietnam that are best for you.

Fly from

Portland

Fly to

Vietnam

Route

Depart

Return

Price

PortlandHo Chi Minh City

PWM - SGN

PWMSGN

Portland

Tue 3/17

5:45 am-10:55 pm

3 stops54h 10m

Ho Chi Minh City

Fri 4/10

7:00 am-9:40 pm

3 stops49h 40m

$1,201

PortlandHo Chi Minh City

PWM - SGN

PWMSGN

Portland

Mon 3/2

5:40 pm-12:20 am

2 stops42h 40m

Ho Chi Minh City

Mon 3/23

1:50 pm-11:37 pm

2 stops44h 47m

$1,388

PortlandHo Chi Minh City

PWM - SGN

PWMSGN

Portland

Mon 3/2

2:10 pm-10:55 pm

3 stops44h 45m

Ho Chi Minh City

Mon 3/23

6:00 am-3:14 pm

3 stops68h 14m

$1,433

PortlandHo Chi Minh City

PWM - SGN

PWMSGN

Portland

Tue 3/17

12:44 pm-10:00 am

3 stops34h 16m

Ho Chi Minh City

Fri 4/10

9:20 am-11:47 pm

2 stops49h 27m

$2,580

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/5

Best time to book a flight from Portland to Vietnam

Have a flexible travel schedule? Discover the best time to fly to Vietnam from Portland 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 Portland to Vietnam

What is the cheapest month to book a flight from Portland, Maine to Vietnam?

Currently, March is the cheapest month in which you can book a flight from Portland, Maine to Vietnam (average of $640). Flying from Portland, Maine to Vietnam in June is currently the most expensive (average of $1,108). 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.

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 February 5, 2026.
See what other customers who have flown with United Airlines from Portland to Vietnam have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,240 reviews

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,240 reviews
United Airlines
7.4
Good
9,240 reviews

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

Find useful and relevant information for your journey from Portland to Vietnam. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Portland to Vietnam?

    Located just 2.9 mi from the city center, Portland (PWM) is the airport most travelers will use when flying to Vietnam from Portland.

  • How long is the flight from Portland, Maine to Vietnam?

    For as low as $1,201, United Airlines can have you in Vietnam from Portland, Maine in 54h 10m. Portland, Maine and Vietnam are separated by a distance of 8663 mi.

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

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

  • How can I find direct flights from Portland to Vietnam?

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

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

    Yes. Cheapflights offers flight deals from Portland 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 Portland, Maine to Vietnam?

    Currently, March is the cheapest month in which you can book a flight from Portland, Maine to Vietnam (average of $640). Flying from Portland, Maine to Vietnam in June is currently the most expensive (average of $1,108). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Portland to Vietnam

Discover the top airline that operate flights from Portland 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 February 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$845Average$1,260FlexibilityNo cancel feeOn-time69%

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