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Cheap flights from Portland, Maine to Porto from $717

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Portland, Maine to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
3:15 pm - 9:30 amPWM  Portland-OPO Porto
13h 15m1 stop Newark
United Airlines Logo
6:00 am - 9:34 pmOPO  Porto-PWM Portland
20h 34m2 stops Frankfurt am Main Chicago O'Hare Intl
$717United Airlines
Mon, Dec 7 - Fri, Dec 11
United Airlines Logo
9:51 am - 9:30 amPWM  Portland-OPO Porto
18h 39m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
6:00 am - 6:47 pmOPO  Porto-PWM Portland
17h 47m2 stops Frankfurt am Main Newark
$722United Airlines
Mon, Dec 7 - Fri, Dec 11
United Airlines Logo
3:15 pm - 9:30 amPWM  Portland-OPO Porto
13h 15m1 stop Newark
United Airlines Logo
12:35 pm - 8:42 pmOPO  Porto-PWM Portland
13h 07m1 stop Newark
$726United Airlines
Mon, Dec 7 - Fri, Dec 11
United Airlines Logo
3:15 pm - 9:30 amPWM  Portland-OPO Porto
13h 15m1 stop Newark
United Airlines Logo
12:35 pm - 8:42 pmOPO  Porto-PWM Portland
13h 07m1 stop Newark
$727United Airlines
Mon, Dec 7 - Fri, Dec 11
United Airlines Logo
8:49 am - 9:30 amPWM  Portland-OPO Porto
19h 41m1 stop Newark
United Airlines Logo
6:00 am - 11:21 pmOPO  Porto-PWM Portland
22h 21m2 stops Frankfurt am Main Newark
$756United Airlines
Sun, Nov 8 - Sun, Nov 15
United Airlines Logo
5:30 am - 9:30 amPWM  Portland-OPO Porto
23h 00m2 stops Washington, D.C. Dulles Intl Newark
United Airlines Logo
6:00 am - 11:59 pmOPO  Porto-PWM Portland
22h 59m2 stops Frankfurt am Main Washington, D.C. Dulles Intl
$761United Airlines
Sun, Nov 8 - Sun, Nov 15
United Airlines Logo
6:55 pm - 9:45 amPWM  Portland-OPO Porto
9h 50m1 stop Newark
United Airlines Logo
6:00 am - 2:27 pmOPO  Porto-PWM Portland
36h 27m2 stops Frankfurt am Main Washington, D.C. Dulles Intl
$848United Airlines
Thu, Oct 22 - Thu, Oct 29
United Airlines Logo
6:55 pm - 9:45 amPWM  Portland-OPO Porto
9h 50m1 stop Newark
United Airlines Logo
6:00 am - 11:59 pmOPO  Porto-PWM Portland
21h 59m2 stops Frankfurt am Main Washington, D.C. Dulles Intl
$852United Airlines
Sun, Oct 18 - Sun, Oct 25
United Airlines Logo
5:15 am - 9:45 amPWM  Portland-OPO Porto
23h 30m2 stops Washington, D.C. Dulles Intl Newark
United Airlines Logo
6:00 am - 2:16 pmOPO  Porto-PWM Portland
36h 16m2 stops Frankfurt am Main Chicago O'Hare Intl
$853United Airlines
Thu, Oct 22 - Thu, Oct 29
United Airlines Logo
5:15 am - 9:45 amPWM  Portland-OPO Porto
23h 30m2 stops Washington, D.C. Dulles Intl Newark
United Airlines Logo
6:00 am - 11:59 pmOPO  Porto-PWM Portland
21h 59m2 stops Frankfurt am Main Washington, D.C. Dulles Intl
$857United Airlines
Sun, Oct 18 - Sun, Oct 25

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United Airlines flights from Portland, Maine to Porto

Our best United Airlines deals on Portland, Maine to Porto flight tickets
United Airlines
Dec 7
PWM3:15 pmPortland
13h 15m
1 stop
OPO9:30 amPorto
Dec 11
OPO6:00 amPorto
20h 34m
2 stops
PWM9:34 pmPortland
$717
United Airlines
Dec 7
PWM9:51 amPortland
18h 39m
2 stops
OPO9:30 amPorto
Dec 11
OPO6:00 amPorto
17h 47m
2 stops
PWM6:47 pmPortland
$722
United Airlines
Dec 7
PWM3:15 pmPortland
13h 15m
1 stop
OPO9:30 amPorto
Dec 11
OPO12:35 pmPorto
13h 07m
1 stop
PWM8:42 pmPortland
$726

Air Canada flights from Portland, Maine to Porto

Our best Air Canada deals on Portland, Maine to Porto flight tickets
Air Canada
Sep 14
PWM10:50 amPortland
15h 10m
3 stops
OPO7:00 amPorto
Sep 21
OPO10:00 amPorto
18h 32m
3 stops
PWM11:32 pmPortland
$2,550
Air Canada
Oct 18
PWM9:10 amPortland
21h 05m
3 stops
OPO11:15 amPorto
Oct 25
OPO8:30 amPorto
18h 51m
3 stops
PWM11:21 pmPortland
$2,602
Air Canada
Sep 14
PWM10:50 amPortland
15h 10m
3 stops
OPO7:00 amPorto
Sep 21
OPO10:00 amPorto
18h 32m
3 stops
PWM11:32 pmPortland
$2,623

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandPorto

PWM Portland - OPO Porto

PWMOPO

Portland

Mon 12/7

3:15 pm-9:30 am

1 stop13h 15m

Porto

Fri 12/11

6:00 am-9:34 pm

2 stops20h 34m

$717

PortlandPorto

PWM Portland - OPO Porto

PWMOPO

Portland

Mon 12/7

9:51 am-9:30 am

2 stops18h 39m

Porto

Fri 12/11

6:00 am-6:47 pm

2 stops17h 47m

$722
Quickest round-trip

PortlandPorto

PWM Portland - OPO Porto

PWMOPO

Portland

Mon 12/7

3:15 pm-9:30 am

1 stop13h 15m

Porto

Fri 12/11

12:35 pm-8:42 pm

1 stop13h 07m

$726

PortlandPorto

PWM Portland - OPO Porto

PWMOPO

Portland

Mon 12/7

3:15 pm-9:30 am

1 stop13h 15m

Porto

Fri 12/11

12:35 pm-8:42 pm

1 stop13h 07m

$727

PortlandPorto

PWM Portland - OPO Porto

PWMOPO

Portland

Sun 11/8

8:49 am-9:30 am

1 stop19h 41m

Porto

Sun 11/15

6:00 am-11:21 pm

2 stops22h 21m

$756

PortlandPorto

PWM Portland - OPO Porto

PWMOPO

Portland

Sun 11/8

5:30 am-9:30 am

2 stops23h 00m

Porto

Sun 11/15

6:00 am-11:59 pm

2 stops22h 59m

$761

PortlandPorto

PWM Portland - OPO Porto

PWMOPO

Portland

Thu 10/22

6:55 pm-9:45 am

1 stop9h 50m

Porto

Thu 10/29

6:00 am-2:27 pm

2 stops36h 27m

$848

PortlandPorto

PWM Portland - OPO Porto

PWMOPO

Portland

Sun 10/18

6:55 pm-9:45 am

1 stop9h 50m

Porto

Sun 10/25

6:00 am-11:59 pm

2 stops21h 59m

$852

PortlandPorto

PWM Portland - OPO Porto

PWMOPO

Portland

Thu 10/22

5:15 am-9:45 am

2 stops23h 30m

Porto

Thu 10/29

6:00 am-2:16 pm

2 stops36h 16m

$853

PortlandPorto

PWM Portland - OPO Porto

PWMOPO

Portland

Sun 10/18

5:15 am-9:45 am

2 stops23h 30m

Porto

Sun 10/25

6:00 am-11:59 pm

2 stops21h 59m

$857

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Porto from

How to get the cheapest flight ticket from Portland, Maine to Porto

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What airlines fly to Porto?

TAP AIR PORTUGAL, Iberia and United Airlines are the top three most popular airlines that fly to Porto from Portland, Maine according to our data. TAP AIR PORTUGAL is the first choice among our users, with 84% of people opting to fly with this airline when traveling to Porto. Keep in mind that there are 10 different airlines that fly to Porto on a routine basis, so you have a few additional options to choose from.

When to book flights from Portland, Maine to Porto

Are you open to changing your travel dates? Check out the ideal times to fly from Portland, Maine to Porto according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland, Maine to Porto (PWM to OPO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to Porto

Best Price Found

$717

Fastest flight time

13h 15m

Direct flights

None
The best flight deal from Portland, Maine to Porto found on momondo in the last 72 hours is $717
The fastest flight from Portland, Maine to Porto takes 13h 15m
There are no direct flights from Portland, Maine to Porto. There are no popular flight routes from Portland, Maine to Porto.
Search flight deals

Frequently asked questions about flying from Portland, Maine to Porto

  • How far is Portland to Porto by plane?

    Porto is 3072.7 mi away from Portland. Typically, this will take 13h 15m by plane in normal conditions.

  • When did momondo last update prices for flights from Portland Airport to Porto Airport?

    Prices for flights from Portland Airport to Porto Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Portland Airport to Porto Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Porto Airport.

  • What documentation or ID do you need to fly to Porto Airport?

    The necessary travel and health documents for your Porto Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Coimbra
Vila Nova de Gaia
Aveiro
Braga
Pinhao
Matosinhos
Esposende
Chaves
Arcos de Valdevez
Viseu
Espinho
Guimarães
Lamego
Ponte de Lima
Penafiel
Caminha
Baiao
Mira

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Porto?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Portland to Porto. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Portland to Porto with flexible booking policies on momondo?

All flight searches from Portland to Porto on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Portland to Porto?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Portland to Porto.

I’m not ready to book a flight from Portland to Porto right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Porto from Portland. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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