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$1,221+ 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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SGN
Apr 11 — Apr 181
Sat 4/11
Sat 4/18
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 March 12, 2026.

This Korean Air deal was found by Cheapflights users on 3/8. 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 9/106:00 am
PWM
-
SGN
2 stops29h 10m
Korean Air
Mon 9/141:55 pm
SGN
-
PWM
2 stops43h 38m
Korean Air
Deal found 3/8$1,221
This United Airlines deal was found by Cheapflights users on 3/8. 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 9/106:00 am
PWM
-
SGN
3 stops29h 05m
United Airlines
Mon 9/1411:15 pm
SGN
-
PWM
2 stops35h 44m
United Airlines
Deal found 3/8$1,225
This Expedia deal was found by Cheapflights users on 3/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/247:30 am
PWM
-
SGN
2 stops51h 30m
Multiple Airlines
Fri 5/13:45 pm
SGN
-
PWM
2 stops66h 51m
Multiple Airlines
Deal found 3/10$1,292
This United Airlines deal was found by Cheapflights users on 3/10. 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.
Fri 4/246:04 am
PWM
-
SGN
3 stops29h 01m
United Airlines
Fri 5/17:00 am
SGN
-
PWM
3 stops27h 23m
United Airlines
Deal found 3/10$1,316
This Delta deal was found by Cheapflights users on 3/7. 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 6/146:50 pm
PWM
-
SGN
2 stops41h 25m
Delta
Wed 7/111:45 pm
SGN
-
PWM
2 stops35h 14m
Delta
Deal found 3/7$1,611
This United Airlines deal was found by Cheapflights users on 3/9. 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 6/293:31 pm
PWM
-
SGN
3 stops43h 34m
United Airlines
Sat 8/157:00 am
SGN
-
PWM
3 stops43h 43m
United Airlines
Deal found 3/9$1,626
This United Airlines deal was found by Cheapflights users on 3/7. 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.
Sun 6/144:51 pm
PWM
-
SGN
3 stops42h 14m
United Airlines
Wed 7/111:15 pm
SGN
-
PWM
2 stops35h 15m
United Airlines
Deal found 3/7$1,675

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 March 12, 2026.

Round-trip from

$1,292
(Expedia)
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 March 12, 2026.
Use the filters below to find and compare flights from Portland to Vietnam that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandHo Chi Minh City

PWM - SGN

PWMSGN

Portland

Fri 4/24

7:30 am-10:00 pm

2 stops51h 30m

Ho Chi Minh City

Fri 5/1

3:45 pm-11:36 pm

2 stops66h 51m

$1,292
Quickest round-trip

PortlandHo Chi Minh City

PWM - SGN

PWMSGN

Portland

Fri 4/24

6:00 am-9:55 pm

2 stops28h 55m

Ho Chi Minh City

Fri 5/1

7:00 am-10:23 am

3 stops38h 23m

$1,317

PortlandHo Chi Minh City

PWM - SGN

PWMSGN

Portland

Sun 6/14

6:50 pm-11:15 pm

2 stops41h 25m

Ho Chi Minh City

Wed 7/1

11:45 pm-11:59 pm

2 stops35h 14m

$1,611

PortlandHo Chi Minh City

PWM - SGN

PWMSGN

Portland

Mon 6/29

3:31 pm-10:05 pm

3 stops43h 34m

Ho Chi Minh City

Sat 8/15

7:00 am-3:43 pm

3 stops43h 43m

$1,626

PortlandHo Chi Minh City

PWM - SGN

PWMSGN

Portland

Sun 6/14

4:51 pm-10:05 pm

3 stops42h 14m

Ho Chi Minh City

Wed 7/1

11:15 pm-11:30 pm

2 stops35h 15m

$1,675

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/10

Sorted by cheapest first

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, July is the cheapest month in which you can book a flight from Portland, Maine to Vietnam (average of $617). Flying from Portland, Maine to Vietnam in June is currently the most expensive (average of $1,069). 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 March 12, 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
9,418 reviews

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Food

6.6

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
9,418 reviews
United Airlines
7.4
Good
9,418 reviews

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Food

6.6

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 $1,317, United Airlines can have you in Vietnam from Portland, Maine in 28h 55m. Portland, Maine and Vietnam are separated by a distance of 8663 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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, July is the cheapest month in which you can book a flight from Portland, Maine to Vietnam (average of $617). Flying from Portland, Maine to Vietnam in June is currently the most expensive (average of $1,069). 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 March 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$845Average$1,260FlexibilityNo cancel feeOn-time69%

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