Latest deals
FAQs
Price Alerts

Cheap flights from Maine to Porto from $706

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Maine to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
3:40 pm - 9:30 amPWM  Portland-OPO Porto
12h 50m1 stop Newark
United Airlines Logo
6:00 am - 9:51 pmOPO  Porto-PWM Portland
20h 51m2 stops Frankfurt am Main Chicago O'Hare Intl
$706United Airlines
Wed, Nov 11 - Wed, Nov 18
United Airlines Logo
3:40 pm - 9:30 amPWM  Portland-OPO Porto
12h 50m1 stop Newark
United Airlines Logo
12:35 pm - 6:49 pmOPO  Porto-PWM Portland
11h 14m1 stop Newark
$715United Airlines
Wed, Nov 11 - Wed, Nov 18
United Airlines Logo
9:12 am - 9:30 amPWM  Portland-OPO Porto
19h 18m1 stop Newark
United Airlines Logo
12:30 pm - 8:42 pmOPO  Porto-PWM Portland
37h 12m2 stops Frankfurt am Main Newark
$738United Airlines
Sun, Dec 6 - Mon, Dec 14
United Airlines Logo
9:47 am - 9:30 amPWM  Portland-OPO Porto
18h 43m2 stops Washington, D.C. Dulles Intl Newark
United Airlines Logo
12:30 pm - 7:12 pmOPO  Porto-PWM Portland
35h 42m2 stops Frankfurt am Main Washington, D.C. Dulles Intl
$742United Airlines
Sun, Dec 6 - Mon, Dec 14
United Airlines Logo
7:00 am - 9:30 amPWM  Portland-OPO Porto
21h 30m1 stop Newark
United Airlines Logo
12:35 pm - 7:25 pmOPO  Porto-PWM Portland
11h 50m1 stop Newark
$765United Airlines
Sun, Dec 6 - Mon, Dec 14
United Airlines Logo
3:20 pm - 9:30 amPWM  Portland-OPO Porto
13h 10m1 stop Newark
United Airlines Logo
12:35 pm - 11:24 pmOPO  Porto-PWM Portland
15h 49m1 stop Newark
$765United Airlines
Sun, Dec 6 - Mon, Dec 14
United Airlines Logo
3:20 pm - 9:30 amPWM  Portland-OPO Porto
13h 10m1 stop Newark
United Airlines Logo
6:00 am - 9:29 pmOPO  Porto-PWM Portland
20h 29m2 stops Frankfurt am Main Chicago O'Hare Intl
$1,080United Airlines
Mon, Dec 7 - Fri, Dec 11
Air Canada Logo
3:20 pm - 3:20 pmPWM  Portland-OPO Porto
19h 00m3 stops Newark Toronto Pearson Intl Frankfurt am Main
Air Canada Logo
7:00 am - 11:24 pmOPO  Porto-PWM Portland
21h 24m3 stops Lisbon Humberto Delgado Toronto Pearson Intl Newark
$2,084Air Canada
Sun, Dec 6 - Mon, Dec 14

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

United Airlines flights from Maine to Porto

Our best United Airlines deals on Maine to Porto flight tickets
United Airlines
Nov 11
PWM3:40 pmPortland
12h 50m
1 stop
OPO9:30 amPorto
Nov 18
OPO6:00 amPorto
20h 51m
2 stops
PWM9:51 pmPortland
$706
United Airlines
Nov 11
PWM3:40 pmPortland
12h 50m
1 stop
OPO9:30 amPorto
Nov 18
OPO12:35 pmPorto
11h 14m
1 stop
PWM6:49 pmPortland
$715
United Airlines
Dec 6
PWM9:12 amPortland
19h 18m
1 stop
OPO9:30 amPorto
Dec 14
OPO12:30 pmPorto
37h 12m
2 stops
PWM8:42 pmPortland
$738

momondo Fare Finder

 
Use the filters below to find and compare flights from 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

Wed 11/11

3:40 pm-9:30 am

1 stop12h 50m

Porto

Wed 11/18

6:00 am-9:51 pm

2 stops20h 51m

$706
Quickest round-trip

PortlandPorto

PWM Portland - OPO Porto

PWMOPO

Portland

Wed 11/11

3:40 pm-9:30 am

1 stop12h 50m

Porto

Wed 11/18

12:35 pm-6:49 pm

1 stop11h 14m

$715

PortlandPorto

PWM Portland - OPO Porto

PWMOPO

Portland

Sun 12/6

9:12 am-9:30 am

1 stop19h 18m

Porto

Mon 12/14

12:30 pm-8:42 pm

2 stops37h 12m

$738

PortlandPorto

PWM Portland - OPO Porto

PWMOPO

Portland

Sun 12/6

9:47 am-9:30 am

2 stops18h 43m

Porto

Mon 12/14

12:30 pm-7:12 pm

2 stops35h 42m

$742

PortlandPorto

PWM Portland - OPO Porto

PWMOPO

Portland

Sun 12/6

7:00 am-9:30 am

1 stop21h 30m

Porto

Mon 12/14

12:35 pm-7:25 pm

1 stop11h 50m

$765

PortlandPorto

PWM Portland - OPO Porto

PWMOPO

Portland

Sun 12/6

3:20 pm-9:30 am

1 stop13h 10m

Porto

Mon 12/14

12:35 pm-11:24 pm

1 stop15h 49m

$765

PortlandPorto

PWM Portland - OPO Porto

PWMOPO

Portland

Mon 12/7

3:20 pm-9:30 am

1 stop13h 10m

Porto

Fri 12/11

6:00 am-9:29 pm

2 stops20h 29m

$1,080

PortlandPorto

PWM Portland - OPO Porto

PWMOPO

Portland

Sun 12/6

3:20 pm-3:20 pm

3 stops19h 00m

Porto

Mon 12/14

7:00 am-11:24 pm

3 stops21h 24m

$2,084

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap Maine to Porto flight deals and tips

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

Best Price Found

$706

Fastest flight time

6h 30m

Direct flights

None
The best flight deal from Maine to Porto found on momondo in the last 72 hours is $706
The fastest flight from Maine to Porto takes 6h 30m
There are no direct flights from Maine to Porto. There are no popular flight routes from Maine to Porto.
Search flight deals

Frequently asked questions about flying from Maine to Porto

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

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Maine to Porto Airport.

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

    The travel and health documents you'll need for your trip to Porto Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Porto Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Maine to Porto

  • How do I get Price Alerts for flights from Maine to Porto?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Maine from Porto. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Maine to Porto with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Traveling to a place near Porto?

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

Why use momondo?

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

Finding the right flight to Porto from Maine is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Porto quick and easy, saving you time and money.

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

momondo does allow users to show only those flights to Porto from Maine which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search for Maine to Porto flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are simply researching potential flights to Porto, momondo offers a useful price alert feature which will track prices for flights to Porto from Maine and alert you when they change.

An easier way to manage your Porto trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 10/30
Fri 11/6
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Portugal