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Cheap flights from Maine to Porto from $271

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Maine to Porto departing on 9/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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.
TAP AIR PORTUGAL Logo
11:15 pm - 10:55 am
BOS
-
OPO
6h 40mnonstop
TAP AIR PORTUGAL Logo
7:00 am - 2:40 pm
OPO
-
BOS
12h 40m
1 stop
$711TAP AIR PORTUGAL
lø., sep. 26 - lø., jan. 23
TAP AIR PORTUGAL Logo
11:15 pm - 10:55 am
BOS
-
OPO
6h 40mnonstop
TAP AIR PORTUGAL Logo
7:00 am - 2:40 pm
OPO
-
BOS
12h 40m
1 stop
$712TAP AIR PORTUGAL
lø., sep. 26 - lø., jan. 23
TAP AIR PORTUGAL Logo
10:45 pm - 5:00 pm
BOS
-
OPO
13h 15m
1 stop
TAP AIR PORTUGAL Logo
5:40 pm - 8:20 pm
OPO
-
BOS
7h 40mnonstop
$713TAP AIR PORTUGAL
lø., jul. 25 - lø., sep. 19
TAP AIR PORTUGAL Logo
4:30 pm - 11:10 pm
BOS
-
OPO
25h 40m
2 stops
TAP AIR PORTUGAL Logo
10:00 am - 8:20 pm
OPO
-
BOS
15h 20m
1 stop
$714TAP AIR PORTUGAL
on., aug. 26 - fr., sep. 18
Multiple Airlines Logo
8:50 pm - 11:20 pm
BOS
-
OPO
21h 30m
2 stops
Multiple Airlines Logo
4:00 pm - 5:42 pm
OPO
-
BOS
30h 42m
3 stops
$715Multiple Airlines
on., sep. 9 - fr., sep. 18
Azores Airlines Logo
9:25 pm - 11:50 am
BOS
-
OPO
9h 25m
1 stop
Azores Airlines Logo
12:40 pm - 8:00 pm
OPO
-
BOS
12h 20m
1 stop
$716Azores Airlines
sø., nov. 8 - fr., nov. 13
Multiple Airlines Logo
5:25 pm - 11:00 am
BOS
-
OPO
12h 35m
2 stops
Multiple Airlines Logo
12:00 pm - 9:05 pm
OPO
-
BOS
14h 05m
1 stop
$719Multiple Airlines
ma., aug. 31 - on., sep. 16
SWISS Logo
10:43 am - 9:45 am
PWM
-
OPO
18h 02m
1 stop
SWISS Logo
8:40 am - 11:28 pm
OPO
-
PWM
19h 48m
2 stops
$774SWISS
ma., okt. 19 - fr., okt. 23
Delta Logo
4:15 pm - 3:25 pm
PWM
-
OPO
18h 10m
2 stops
Delta Logo
11:25 am - 12:10 am
OPO
-
PWM
17h 45m
2 stops
$778Delta
ma., okt. 19 - fr., okt. 23
Delta Logo
6:00 am - 8:30 am
PWM
-
OPO
21h 30m
2 stops
Delta Logo
9:25 am - 12:59 am
OPO
-
PWM
20h 34m
2 stops
$947Delta
to., aug. 13 - to., aug. 20

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Azores Airlines flights from Maine to Porto

Our best Azores Airlines deals on Maine to Porto flight tickets
Azores Airlines
Nov 8
BOS9:25 pmBoston Logan Intl
9h 25m
1 stop
OPO11:50 amPorto
Nov 13
OPO12:40 pmPorto
12h 20m
1 stop
BOS8:00 pmBoston Logan Intl
$716
Azores Airlines
Sep 28
BOS9:15 pmBoston Logan Intl
12h 30m
1 stop
OPO2:45 pmPorto
Nov 8
OPO12:40 pmPorto
12h 20m
1 stop
BOS8:00 pmBoston Logan Intl
$725
Azores Airlines
Dec 14
BOS9:25 pmBoston Logan Intl
8h 45m
1 stop
OPO11:10 amPorto
Jan 4
OPO12:40 pmPorto
12h 20m
1 stop
BOS8:00 pmBoston Logan Intl
$753

Delta flights from Maine to Porto

Our best Delta deals on Maine to Porto flight tickets
Delta
Oct 31
BOS1:10 pmBoston Logan Intl
17h 25m
2 stops
OPO10:35 amPorto
Nov 7
OPO11:00 amPorto
12h 27m
1 stop
BOS6:27 pmBoston Logan Intl
$754
Delta
Jul 12
BOS9:00 amBoston Logan Intl
20h 25m
1 stop
OPO10:25 amPorto
Nov 17
OPO11:15 amPorto
31h 10m
1 stop
BOS1:25 pmBoston Logan Intl
$769
Delta
Oct 19
PWM4:15 pmPortland
18h 10m
2 stops
OPO3:25 pmPorto
Oct 23
OPO11:25 amPorto
17h 45m
2 stops
PWM12:10 amPortland
$778

momondo Fare Finder

 
Customize your flight search to find flights from Maine to Porto 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, momondo users made 832,500 searches. Data last updated juli 1, 2026.
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
Quickest round-trip

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

lø. 9/26

11:15 pm-10:55 am

Nonstop6h 40m

Porto

lø. 1/23

7:00 am-2:40 pm

1 stop12h 40m

$711

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

lø. 9/26

11:15 pm-10:55 am

Nonstop6h 40m

Porto

lø. 1/23

7:00 am-2:40 pm

1 stop12h 40m

$712

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

lø. 7/25

10:45 pm-5:00 pm

1 stop13h 15m

Porto

lø. 9/19

5:40 pm-8:20 pm

Nonstop7h 40m

$713

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

on. 8/26

4:30 pm-11:10 pm

2 stops25h 40m

Porto

fr. 9/18

10:00 am-8:20 pm

1 stop15h 20m

$714

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

on. 9/9

8:50 pm-11:20 pm

2 stops21h 30m

Porto

fr. 9/18

4:00 pm-5:42 pm

3 stops30h 42m

$715

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

sø. 11/8

9:25 pm-11:50 am

1 stop9h 25m

Porto

fr. 11/13

12:40 pm-8:00 pm

1 stop12h 20m

$716

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

ma. 8/31

5:25 pm-11:00 am

2 stops12h 35m

Porto

on. 9/16

12:00 pm-9:05 pm

1 stop14h 05m

$719

PortlandPorto

PWM - OPO

PWMOPO

Portland

ma. 10/19

10:43 am-9:45 am

1 stop18h 02m

Porto

fr. 10/23

8:40 am-11:28 pm

2 stops19h 48m

$774

PortlandPorto

PWM - OPO

PWMOPO

Portland

ma. 10/19

4:15 pm-3:25 pm

2 stops18h 10m

Porto

fr. 10/23

11:25 am-12:10 am

2 stops17h 45m

$778

PortlandPorto

PWM - OPO

PWMOPO

Portland

to. 8/13

6:00 am-8:30 am

2 stops21h 30m

Porto

to. 8/20

9:25 am-12:59 am

2 stops20h 34m

$947

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Porto from

How to get the cheapest flight ticket from 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 is the cheapest airline that flies from Maine to Porto?

United Airlines and TAP AIR PORTUGAL are the most popular carriers operating from Maine to Porto

Cheap Maine to Porto flight deals and tips

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

Fastest flight time

6h 30m

Direct flights

Mon, Tue, Thu and Sun

Airports in Porto

1 airport
The fastest flight from Maine to Porto takes 6h 30m
Direct flights go from Maine to Porto on Monday, Tuesday, Thursday and Sunday. There are no airlines offering direct flights.
There is 1 airport in Porto. From Maine there are direct flights to Porto (OPO).
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 many operators does momondo search for flights from Maine to Porto Airport?

  • 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.

Traveling to a place near Porto?

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

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

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