How does KAYAK find such low prices on flights from Maine to Porto?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Maine to Porto. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Maine to Porto?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Maine is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Maine to Porto?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to Maine with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Maine to Porto?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto from Maine up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$233 CHEAP FLIGHTS from Maine to Porto

OPO

KAYAK searches hundreds of travel sites at once for deals on flights to Porto

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41,299,237 searches in the past 7 days on KAYAK

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Filter your dealsChoose cabin class, free Wi-Fi and more.

Cheapest round-trip

$402

Typical prices: $448-$738

Multiple Airlines

Sun 11/9Tue 11/25

BOS - OPO • 1 stop

Cheapest non-stop

$462

Typical prices: $530-$580

TAP AIR PORTUGAL

Wed 4/1Wed 4/22

BOS - OPO • Non-stop

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to Porto!

Flight Deals

Cheap Flights from Maine to Porto

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Maine to Porto that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Maine to Porto

Sun, Nov 9 - Tue, Nov 25

11:59 am - 9:30 amBOS-OPO

16h 31m1 stop

9:10 am - 8:20 pmOPO-BOS

16h 10m2 stops

$402Multiple Airlines

Find Deal

Sat, Dec 6 - Tue, Jan 20

5:30 am - 11:15 amBOS-OPO

24h 45m2 stops

12:05 pm - 7:42 pmOPO-BOS

36h 37m2 stops

$403Multiple Airlines

Find Deal

Wed, Dec 3 - Tue, Dec 9

9:59 am - 10:30 amBOS-OPO

19h 31m2 stops

11:25 am - 7:33 amOPO-BOS

25h 08m2 stops

$408Delta

Find Deal

Sun, Nov 23 - Mon, Dec 1

9:30 am - 9:30 amBOS-OPO

19h 00m2 stops

12:30 pm - 1:25 pmOPO-BOS

29h 55m1 stop

$409United Airlines

Find Deal

Thu, Feb 5 - Wed, Feb 11

6:05 pm - 1:15 pmBOS-OPO

14h 10m1 stop

8:00 pm - 8:10 pmOPO-BOS

29h 10m1 stop

$413TAP AIR PORTUGAL

Find Deal

Thu, Mar 5 - Wed, Mar 18

9:50 pm - 11:10 amBOS-OPO

32h 20m1 stop

7:20 pm - 9:20 pmOPO-BOS

30h 00m1 stop

$414SWISS

Find Deal

Thu, Nov 27 - Thu, Dec 4

10:45 pm - 5:00 pmBOS-OPO

13h 15m1 stop

6:00 pm - 2:35 pmOPO-BOS

25h 35m1 stop

$419TAP AIR PORTUGAL

Find Deal

Sat, Dec 6 - Tue, Jan 20

10:10 pm - 6:35 pmBOS-OPO

15h 25m1 stop

12:05 pm - 8:20 pmOPO-BOS

13h 15m1 stop

$425SWISS

Find Deal

Thu, Mar 5 - Wed, Mar 18

9:30 am - 9:30 amBOS-OPO

19h 00m2 stops

12:35 pm - 11:48 pmOPO-BOS

15h 13m2 stops

$428United Airlines

Find Deal

Sat, Nov 29 - Tue, Dec 9

8:25 pm - 10:30 amBOS-OPO

33h 05m1 stop

11:25 am - 7:33 amOPO-BOS

25h 08m2 stops

$455Delta

Find Deal

Useful Info

Low season	February
High season	July
Cheapest flight	$233

Best time to beat the crowds with an average 17% drop in price.

Most popular time to fly with an average 21% increase in price.

Flight from Boston to Porto

How does KAYAK find such low prices on flights from Maine to Porto?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Maine to Porto.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Maine to Porto?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Maine is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Maine to Porto?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to Maine with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Maine to Porto?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto from Maine up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Lamego

Guimarães

Pinhao

Chaves

Esposende

Viseu

Arcos de Valdevez

Espinho

Ponte de Lima

Caminha

Baiao

Mira

Penafiel

Santa Maria da Feira

Amares

Curia

Everything you need to know for your flight to Porto

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Information on the airport you'll fly into in Porto

Porto (OPO)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.

OPO

$233 Find Cheap Flights from Maine to Porto

KAYAK searches hundreds of travel sites at once for deals on flights to Porto

Everything you should know

Cheap Flights from Maine to Porto

Recent round-trip flight deals from Maine to Porto

Recent one-way flight deals from Maine to Porto

Recent last minute flight deals from Maine to Porto

Recent direct flight deals from Maine to Porto

Good to know

FAQs for booking flights from Maine to Porto

How does KAYAK find such low prices on flights from Maine to Porto?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Maine to Porto.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Maine to Porto?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Maine is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Maine to Porto?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to Maine with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Maine to Porto?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto from Maine up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Porto?

Everything you need to know for your flight to Porto

Information on the airport you'll fly into in Porto

Cabin class types available on flights to Maine

Complete your trip to Porto with a hotel stay or car rental

Find direct flights for Porto

Flights to other popular destinations

Flights from domestic origins to Porto

Choose which airport to fly into in Porto