In terms of precipitation, rainfall in Portland, Maine ranges from 2.9 - 4.5 inches per month. November is typically the wettest month, when rainfall can reach 4.5 in. August is typically the driest time to visit Portland, Maine when rainfall is around 2.9 in.

If weather is an important factor for your trip to Portland, Maine, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

What is the cheapest time of day to fly from LIS to PWM?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Lisbon to Portland, Maine as you normally would.

Can I find deals for flights from Lisbon to Portland that include hotel bookings?

Yes. In addition to deals on Lisbon to Portland flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Lisbon to Portland?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Lisbon to Portland.

Can I find deals for business class flights from Lisbon to Portland?

Yes. Cheapflights offers flight deals from Lisbon to Portland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$439+ Flights from Lisbon to Portland, ME

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Cheap flight deals from Lisbon to Portland

Cheapest flights from Lisbon to Portland
Explore the most affordable flight options available from Lisbon to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 28, 2026.

Fri 2/66:30 am

LIS

PWM

2 stops38h 01m

American Airlines

Mon 2/912:40 pm

PWM

LIS

2 stops21h 15m

American Airlines

Deal found 1/25

$779

Last-minute flights from Lisbon to Portland
Discover last-minute flight deals from Lisbon to Portland. Data last updated January 28, 2026 and is based on user searches.

Fri 2/66:30 am

LIS

PWM

2 stops38h 01m

American Airlines

Mon 2/912:40 pm

PWM

LIS

2 stops21h 15m

American Airlines

Deal found 1/25

$779

One-way flights from Lisbon to Portland
Search for one-way flight options from Lisbon to Portland. Find affordable one-way fares based on user searches. Data last updated January 28, 2026.

Wed 3/115:40 pm

LIS

PWM

2 stops43h 27m

Multiple Airlines

Deal found 1/26

$439

Wed 3/1111:05 am

LIS

PWM

1 stop15h 54m

American Airlines

Deal found 1/26

$778

Wed 3/1110:15 am

LIS

PWM

1 stop12h 10m

United Airlines

Deal found 1/27

$867

Fly from

Fly to

Route

Depart

Return

Price

LisbonPortland

LIS - PWM

LISPWM

Lisbon Humberto Delgado

Wed 3/11

5:40 pm-9:07 am

2 stops43h 27m

$439

LisbonPortland

LIS - PWM

LISPWM

Lisbon Humberto Delgado

Wed 3/11

11:05 am-10:59 pm

1 stop15h 54m

$778

LisbonPortland

LIS - PWM

LISPWM

Lisbon Humberto Delgado

Wed 3/11

10:15 am-6:25 pm

1 stop12h 10m

$867

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Best time to book a flight from Lisbon to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from Lisbon with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Lisbon to Portland

What is the cheapest month to book a flight from Lisbon to Portland, Maine?

Currently, July is the cheapest month in which you can book a flight from Lisbon to Portland, Maine (average of $325). Flying from Lisbon to Portland, Maine in June is currently the most expensive (average of $538). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Can I find deals for flights from Lisbon to Portland that include hotel bookings?
Yes. In addition to deals on Lisbon to Portland flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Lisbon to Portland?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Lisbon to Portland.
Can I find deals for business class flights from Lisbon to Portland?
Yes. Cheapflights offers flight deals from Lisbon to Portland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Lisbon to Portland, Maine?
Currently, July is the cheapest month in which you can book a flight from Lisbon to Portland, Maine (average of $325). Flying from Lisbon to Portland, Maine in June is currently the most expensive (average of $538). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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$439+ Cheap flights from Lisbon (LIS) to Portland, ME (PWM)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/11. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Lisbon to Portland with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Lisbon to Portland

Cheapest flights from Lisbon to PortlandExplore the most affordable flight options available from Lisbon to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 28, 2026.

Explore the most affordable flight options available from Lisbon to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 28, 2026.

Cheapflights Fare Finder

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

Best time to book a flight from Lisbon to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from Lisbon with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Lisbon to Portland

What is the cheapest month to book a flight from Lisbon to Portland, Maine?

Related info for your journey

Find useful and relevant information for your journey from Lisbon to Portland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

Can I find deals for flights from Lisbon to Portland that include hotel bookings?

How can I find direct flights from Lisbon to Portland?

Can I find deals for business class flights from Lisbon to Portland?

What is the cheapest month to book a flight from Lisbon to Portland, Maine?

Traveling to a place near Portland?

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Cheapest flights from Lisbon to Portland
Explore the most affordable flight options available from Lisbon to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 28, 2026.