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Cheap flights from Maine to Porto from $296

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 4/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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
10:45 pm - 7:00 pm
BOS
-
OPO
15h 15m
1 stop
TAP AIR PORTUGAL Logo
7:00 am - 2:45 pm
OPO
-
BOS
12h 45m
1 stop
$493TAP AIR PORTUGAL
Mon, May 11 - Wed, May 20
TAP AIR PORTUGAL Logo
10:45 pm - 7:00 pm
BOS
-
OPO
15h 15m
1 stop
TAP AIR PORTUGAL Logo
5:50 pm - 8:20 pm
OPO
-
BOS
7h 30mnonstop
$502TAP AIR PORTUGAL
Mon, May 11 - Mon, May 25
TAP AIR PORTUGAL Logo
10:45 pm - 5:00 pm
BOS
-
OPO
13h 15m
1 stop
TAP AIR PORTUGAL Logo
5:50 pm - 8:20 pm
OPO
-
BOS
7h 30mnonstop
$509TAP AIR PORTUGAL
Mon, May 11 - Mon, May 25
Iberia Logo
10:50 pm - 4:10 pm
BOS
-
OPO
12h 20m
1 stop
Iberia Logo
1:45 pm - 9:15 pm
OPO
-
BOS
12h 30m
1 stop
$513Iberia
Mon, May 4 - Thu, Oct 15
Multiple Airlines Logo
8:05 pm - 11:25 pm
BOS
-
OPO
22h 20m
1 stop
Multiple Airlines Logo
1:30 pm - 1:50 pm
OPO
-
BOS
29h 20m
1 stop
$516Multiple Airlines
Tue, Apr 21 - Tue, Apr 28
Multiple Airlines Logo
8:05 pm - 11:25 pm
BOS
-
OPO
22h 20m
1 stop
Multiple Airlines Logo
1:30 pm - 1:50 pm
OPO
-
BOS
29h 20m
1 stop
$520Multiple Airlines
Tue, Apr 7 - Tue, Apr 14
Iberia Logo
10:50 pm - 4:10 pm
BOS
-
OPO
12h 20m
1 stop
Iberia Logo
10:00 pm - 9:15 pm
OPO
-
BOS
28h 15m
1 stop
$522Iberia
Mon, Apr 27 - Fri, Oct 2
Multiple Airlines Logo
10:45 pm - 9:00 pm
BOS
-
OPO
17h 15m
2 stops
Multiple Airlines Logo
9:30 pm - 8:20 pm
OPO
-
BOS
27h 50m
2 stops
$530Multiple Airlines
Mon, Apr 27 - Tue, May 5
TAP AIR PORTUGAL Logo
10:45 pm - 7:00 pm
BOS
-
OPO
15h 15m
1 stop
TAP AIR PORTUGAL Logo
11:00 am - 8:20 pm
OPO
-
BOS
14h 20m
1 stop
$533TAP AIR PORTUGAL
Mon, Mar 30 - Tue, Apr 14
Multiple Airlines Logo
5:10 pm - 9:15 am
BOS
-
OPO
35h 05m
1 stop
Multiple Airlines Logo
8:40 am - 3:10 pm
OPO
-
BOS
11h 30m
1 stop
$534Multiple Airlines
Tue, Apr 14 - Tue, Apr 21

Lufthansa flights from Maine to Porto

Our best Lufthansa deals on Maine to Porto flight tickets
Lufthansa
Apr 7
BOS8:05 pmBoston Logan Intl
22h 20m
1 stop
OPO11:25 pmPorto
Apr 14
OPO6:00 amPorto
16h 40m
2 stops
BOS5:40 pmBoston Logan Intl
$540
Lufthansa
Apr 7
BOS8:05 pmBoston Logan Intl
22h 20m
1 stop
OPO11:25 pmPorto
Apr 14
OPO6:20 amPorto
16h 20m
1 stop
BOS5:40 pmBoston Logan Intl
$561
Lufthansa
Apr 14
BOS8:05 pmBoston Logan Intl
22h 20m
1 stop
OPO11:25 pmPorto
Apr 30
OPO6:20 amPorto
16h 20m
1 stop
BOS5:40 pmBoston Logan Intl
$563

United Airlines flights from Maine to Porto

Our best United Airlines deals on Maine to Porto flight tickets
United Airlines
Apr 6
BOS6:25 pmBoston Logan Intl
10h 20m
1 stop
OPO9:45 amPorto
Apr 15
OPO12:35 pmPorto
12h 29m
1 stop
BOS8:04 pmBoston Logan Intl
$575
United Airlines
Apr 6
BOS7:00 amBoston Logan Intl
21h 45m
2 stops
OPO9:45 amPorto
Apr 15
OPO12:35 pmPorto
12h 29m
1 stop
BOS8:04 pmBoston Logan Intl
$580
United Airlines
Aug 5
BOS3:35 pmBoston Logan Intl
10h 25m
1 stop
OPO7:00 amPorto
Sep 2
OPO2:25 pmPorto
31h 18m
2 stops
BOS4:43 pmBoston Logan Intl
$584

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 March 25, 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

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 5/11

10:45 pm-7:00 pm

1 stop15h 15m

Porto

Wed 5/20

7:00 am-2:45 pm

1 stop12h 45m

$493

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 5/11

10:45 pm-7:00 pm

1 stop15h 15m

Porto

Mon 5/25

5:50 pm-8:20 pm

Nonstop7h 30m

$502
Quickest round-trip

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 5/11

10:45 pm-5:00 pm

1 stop13h 15m

Porto

Mon 5/25

5:50 pm-8:20 pm

Nonstop7h 30m

$509

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 5/4

10:50 pm-4:10 pm

1 stop12h 20m

Porto

Thu 10/15

1:45 pm-9:15 pm

1 stop12h 30m

$513

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 4/21

8:05 pm-11:25 pm

1 stop22h 20m

Porto

Tue 4/28

1:30 pm-1:50 pm

1 stop29h 20m

$516

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 4/7

8:05 pm-11:25 pm

1 stop22h 20m

Porto

Tue 4/14

1:30 pm-1:50 pm

1 stop29h 20m

$520

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 4/27

10:50 pm-4:10 pm

1 stop12h 20m

Porto

Fri 10/2

10:00 pm-9:15 pm

1 stop28h 15m

$522

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 4/27

10:45 pm-9:00 pm

2 stops17h 15m

Porto

Tue 5/5

9:30 pm-8:20 pm

2 stops27h 50m

$530

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 3/30

10:45 pm-7:00 pm

1 stop15h 15m

Porto

Tue 4/14

11:00 am-8:20 pm

1 stop14h 20m

$533

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 4/14

5:10 pm-9:15 am

1 stop35h 05m

Porto

Tue 4/21

8:40 am-3:10 pm

1 stop11h 30m

$534

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?

LEVEL, United Airlines, and Air Canada 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

  • 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
Aveiro
Braga
Matosinhos
Lamego
Esposende
Chaves
Pinhao
Guimarães
Espinho
Arcos de Valdevez
Viseu
Ponte de Lima
Curia
Penafiel
Mesao Frio
Mira
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

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.
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