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Cheap flights from Portland (PWM) to Vietnam - Compare and Save

PWM — SGN
May 1 — May 81
Fri 5/1
Fri 5/8
1 adult, Economy
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Cheap flight deals from Portland to Vietnam

Keep the following information in mind while searching for Portland to Vietnam flight deals. Data was last updated April 1, 2026.

Round-trip from

$1,256
(Japan Airlines)
From Portland to Vietnam
Search Deals

Find 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 April 1, 2026.

This Japan Airlines deal was found by Cheapflights users on 3/29. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/97:09 am
PWM
-
SGN
2 stops59h 16m
Japan Airlines
Sun 9/1311:15 pm
SGN
-
PWM
2 stops33h 52m
Japan Airlines
Deal found 3/29$1,256
This Japan Airlines deal was found by Cheapflights users on 3/27. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/107:09 am
PWM
-
SGN
2 stops59h 16m
Japan Airlines
Mon 9/1411:15 pm
SGN
-
PWM
2 stops33h 52m
Japan Airlines
Deal found 3/27$1,306
This KAYAK deal was found by Cheapflights users on 3/30. 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.
Fri 10/236:00 am
PWM
-
SGN
2 stops24h 20m
Multiple Airlines
Sat 10/3111:35 am
SGN
-
PWM
2 stops23h 08m
Multiple Airlines
Deal found 3/30$1,343
This Korean Air deal was found by Cheapflights users on 3/30. 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 9/96:30 am
PWM
-
SGN
2 stops28h 40m
Korean Air
Sun 9/131:55 pm
SGN
-
PWM
2 stops43h 38m
Korean Air
Deal found 3/30$1,421
This United Airlines deal was found by Cheapflights users on 3/30. 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 9/96:00 am
PWM
-
SGN
3 stops29h 05m
United Airlines
Sun 9/1311:15 pm
SGN
-
PWM
2 stops35h 44m
United Airlines
Deal found 3/30$1,425
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Thu 9/105:15 am
PWM
-
SGN
3 stops29h 50m
United Airlines
Mon 9/147:00 am
SGN
-
PWM
3 stops38h 02m
United Airlines
Deal found 3/27$1,436
This United Airlines deal was found by Cheapflights users on 3/30. 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 10/237:22 pm
PWM
-
SGN
3 stops40h 33m
United Airlines
Sat 10/317:30 am
SGN
-
PWM
2 stops24h 57m
United Airlines
Deal found 3/30$1,458
This United Airlines deal was found by Cheapflights users on 3/30. 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 9/96:00 am
PWM
-
SGN
3 stops29h 05m
United Airlines
Sun 9/137:00 am
SGN
-
PWM
3 stops38h 12m
United Airlines
Deal found 3/30$1,476
This United Airlines deal was found by Cheapflights users on 3/30. 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 10/236:00 am
PWM
-
SGN
3 stops29h 05m
United Airlines
Sat 10/317:30 am
SGN
-
PWM
3 stops26h 27m
United Airlines
Deal found 3/30$1,562
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Thu 7/26:25 pm
PWM
-
SGN
3 stops40h 40m
United Airlines
Wed 7/297:00 am
SGN
-
PWM
2 stops25h 41m
United Airlines
Deal found 3/27$1,893
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Thu 7/26:25 pm
PWM
-
SGN
3 stops40h 40m
United Airlines
Wed 7/297:00 am
SGN
-
PWM
3 stops49h 41m
United Airlines
Deal found 3/27$1,926
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Thu 7/26:25 pm
PWM
-
SGN
3 stops40h 40m
United Airlines
Fri 7/3111:15 pm
SGN
-
PWM
2 stops33h 26m
United Airlines
Deal found 3/27$1,930

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 April 1, 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
9,529 reviews

Entertainment

7.1

Comfort

7.3

Crew

8.1

Boarding

7.7

Food

6.6

Overall

7.4

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
9,529 reviews
United Airlines
7.4
Good
9,529 reviews

Entertainment

7.1

Comfort

7.3

Crew

8.1

Boarding

7.7

Food

6.6

Overall

7.4

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 $1,421, Japan Airlines can have you in Vietnam from Portland, Maine in 28h 40m. 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

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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 April 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$845Average$1,320FlexibilityNo cancel feeOn-time69%

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