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

For as low as $1,074, United Airlines can have you in Vietnam from Portland, Maine in 42h 44m. Portland, Maine and Vietnam are separated by a distance of 8663 mi.

In terms of precipitation, rainfall in Vietnam ranges from 0.0 - 13.4 inches per month. September is typically the wettest month, when rainfall can reach 13.4 in. February is typically the driest time to visit Vietnam when rainfall is around 0.0 in.

If weather is an important factor for your trip to Vietnam, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 86.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 78.8 F).

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

When flying from Portland, Maine to Vietnam, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

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.

$1,074+ Cheap Flights from Portland, ME to Vietnam

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Cheap flight deals from Portland to Vietnam

Round-trip from	$1,074 (United 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 September 15, 2025.

Wed 11/51:27 pmPWM - SGN

2 stops59h 23mDelta

Sun 11/911:50 pmSGN - PWM

2 stops34h 29mDelta

Deal found 9/13

$1,123

Wed 11/53:20 pmPWM - SGN

3 stops43h 35mUnited Airlines

Sun 11/911:05 pmSGN - PWM

2 stops51h 07mUnited Airlines

Deal found 9/13

$1,132

Best flights from Portland to Vietnam
Discover carefully curated flight deals from Portland to Vietnam that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2025.

Sun 3/14:11 pmPWM - SGN

3 stops42h 44mUnited Airlines

Mon 3/1611:05 pmSGN - PWM

2 stops35h 12mUnited Airlines

Deal found 9/15

$1,074

Wed 11/51:27 pmPWM - SGN

2 stops59h 23mDelta

Sun 11/911:50 pmSGN - PWM

2 stops34h 29mDelta

Deal found 9/13

$1,123

Sun 2/14:10 pmPWM - SGN

2 stops65h 40mUnited Airlines

Mon 2/1611:05 pmSGN - PWM

2 stops34h 09mUnited Airlines

Deal found 9/15

$1,103

Mon 2/96:00 amPWM - SGN

2 stops27h 50mUnited Airlines

Wed 4/17:00 amSGN - PWM

3 stops41h 52mUnited Airlines

Deal found 9/15

$1,111

Wed 11/53:20 pmPWM - SGN

3 stops43h 35mUnited Airlines

Sun 11/911:05 pmSGN - PWM

2 stops51h 07mUnited Airlines

Deal found 9/13

$1,132

Fly from

Fly to

Route

Depart

Return

Price

PortlandHo Chi Minh City

PWM - SGN

PWMSGN

Portland

Sun 3/1

4:11 pm-10:55 pm

3 stops42h 44m

Ho Chi Minh City

Mon 3/16

11:05 pm-11:17 pm

2 stops35h 12m

$1,074

PortlandHo Chi Minh City

PWM - SGN

PWMSGN

Portland

Sun 2/1

4:10 pm-9:50 pm

2 stops65h 40m

Ho Chi Minh City

Mon 2/16

11:05 pm-9:14 pm

2 stops34h 09m

$1,103

PortlandHo Chi Minh City

PWM - SGN

PWMSGN

Portland

Mon 2/9

6:00 am-9:50 pm

2 stops27h 50m

Ho Chi Minh City

Wed 4/1

7:00 am-1:52 pm

3 stops41h 52m

$1,111

PortlandHo Chi Minh City

PWM - SGN

PWMSGN

Portland

Wed 11/5

1:27 pm-12:50 pm

2 stops59h 23m

Ho Chi Minh City

Sun 11/9

11:50 pm-10:19 pm

2 stops34h 29m

$1,123

PortlandHo Chi Minh City

PWM - SGN

PWMSGN

Portland

Wed 11/5

3:20 pm-10:55 pm

3 stops43h 35m

Ho Chi Minh City

Sun 11/9

11:05 pm-2:12 pm

2 stops51h 07m

$1,132

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

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, September is the cheapest month in which you can book a flight from Portland, Maine to Vietnam (average of $883). Flying from Portland, Maine to Vietnam in June is currently the most expensive (average of $1,426). 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

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

8,929 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

United Airlines

7.4

Good

8,929 reviews

United Airlines

7.4

Good

8,929 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

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 $1,074, United Airlines can have you in Vietnam from Portland, Maine in 42h 44m. 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, September is the cheapest month in which you can book a flight from Portland, Maine to Vietnam (average of $883). Flying from Portland, Maine to Vietnam in June is currently the most expensive (average of $1,426). 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

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$1,183	Average$1,320	FlexibilityNo cancel fee	On-time69%

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$1,074+ 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 3/1. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Portland to Vietnam with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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 September 15, 2025.

Round-trip from

Find flight deals from Portland to Vietnam

Cheapest flights from Portland to VietnamExplore 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 September 15, 2025.

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 September 15, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portland to Vietnam that are best for you.

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.

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?

Reviews of airlines servicing Vietnam

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.

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?

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

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

How can I find direct flights from Portland to Vietnam?

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

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

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.

Alternative routes for Portland to Vietnam

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Portland to Vietnam

100% Free

Book with Flexibility

Travel Smart

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 September 15, 2025.