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Cheap flights from Portland, Maine to Lisbon from $567

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to Lisbon departing on 1/7. 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
0 bags

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Find the cheapest flights from Portland, Maine to Lisbon

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
12:46 pm - 2:50 pm
PWM
-
LIS
21h 04m2 stops
Multiple Airlines Logo
7:05 am - 10:54 pm
LIS
-
PWM
20h 49m2 stops
$567Multiple Airlines
Wed, Jan 7 - Tue, Jan 13
United Airlines Logo
3:12 pm - 8:10 am
PWM
-
LIS
11h 58m1 stop
United Airlines Logo
11:20 am - 6:54 pm
LIS
-
PWM
36h 34m2 stops
$582United Airlines
Fri, Jan 23 - Fri, Jan 30
United Airlines Logo
3:12 pm - 8:10 am
PWM
-
LIS
11h 58m1 stop
United Airlines Logo
10:15 am - 6:50 pm
LIS
-
PWM
13h 35m1 stop
$590United Airlines
Thu, Jan 8 - Thu, Jan 15
United Airlines Logo
2:31 pm - 8:10 am
PWM
-
LIS
12h 39m2 stops
United Airlines Logo
5:00 am - 6:50 pm
LIS
-
PWM
18h 50m2 stops
$591United Airlines
Wed, Jan 21 - Sun, Jan 25
United Airlines Logo
4:10 pm - 9:20 am
PWM
-
LIS
36h 10m2 stops
United Airlines Logo
10:15 am - 6:50 pm
LIS
-
PWM
13h 35m1 stop
$596United Airlines
Thu, Jan 8 - Thu, Jan 15
United Airlines Logo
2:31 pm - 9:20 am
PWM
-
LIS
37h 49m2 stops
United Airlines Logo
10:15 am - 6:50 pm
LIS
-
PWM
13h 35m1 stop
$597United Airlines
Thu, Jan 8 - Thu, Jan 15
American Airlines Logo
6:00 am - 9:05 am
PWM
-
LIS
22h 05m1 stop
American Airlines Logo
10:55 am - 10:54 pm
LIS
-
PWM
16h 59m1 stop
$598American Airlines
Thu, Jan 8 - Thu, Jan 15
United Airlines Logo
3:12 pm - 8:10 am
PWM
-
LIS
11h 58m1 stop
United Airlines Logo
10:15 am - 6:50 pm
LIS
-
PWM
13h 35m1 stop
$599United Airlines
Fri, Jan 23 - Fri, Jan 30
Air Canada Logo
3:12 pm - 9:20 am
PWM
-
LIS
37h 08m2 stops
Air Canada Logo
11:20 am - 9:01 am
LIS
-
PWM
50h 41m2 stops
$600Air Canada
Thu, Jan 8 - Thu, Jan 15
Air Canada Logo
3:12 pm - 9:20 am
PWM
-
LIS
37h 08m2 stops
Air Canada Logo
11:20 am - 9:01 am
LIS
-
PWM
50h 41m2 stops
$601Air Canada
Thu, Jan 8 - Thu, Jan 15

American Airlines flights from Portland, Maine to Lisbon

Our best American Airlines deals on Portland, Maine to Lisbon flight tickets
American Airlines
Jan 8
PWM6:00 amPortland
22h 05m
1 stop
LIS9:05 amLisbon Humberto Delgado
Jan 15
LIS10:55 amLisbon Humberto Delgado
16h 59m
1 stop
PWM10:54 pmPortland
$598
Find similar
American Airlines
Jan 7
PWM12:40 pmPortland
13h 15m
1 stop
LIS6:55 amLisbon Humberto Delgado
Jan 13
LIS11:05 amLisbon Humberto Delgado
16h 49m
1 stop
PWM10:54 pmPortland
$632
Find similar
American Airlines
Jan 7
PWM12:40 pmPortland
13h 15m
1 stop
LIS6:55 amLisbon Humberto Delgado
Jan 13
LIS11:05 amLisbon Humberto Delgado
17h 38m
2 stops
PWM11:43 pmPortland
$636
Find similar

Delta flights from Portland, Maine to Lisbon

Our best Delta deals on Portland, Maine to Lisbon flight tickets
Delta
Apr 14
PWM2:35 pmPortland
19h 15m
2 stops
LIS2:50 pmLisbon Humberto Delgado
Apr 22
LIS10:00 amLisbon Humberto Delgado
18h 59m
1 stop
PWM11:59 pmPortland
$633
Find similar
Delta
Apr 15
PWM4:50 pmPortland
20h 00m
2 stops
LIS5:50 pmLisbon Humberto Delgado
Apr 22
LIS10:00 amLisbon Humberto Delgado
18h 59m
1 stop
PWM11:59 pmPortland
$687
Find similar
Delta
Dec 23
PWM1:03 pmPortland
21h 07m
2 stops
LIS3:10 pmLisbon Humberto Delgado
Jan 1
LIS5:00 amLisbon Humberto Delgado
22h 43m
2 stops
PWM10:43 pmPortland
$2,089
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Portland, Maine to Lisbon 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 December 10, 2025.
Use the filters below to find and compare flights from Portland, Maine to Lisbon that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Wed 1/7

12:46 pm-2:50 pm

2 stops21h 04m

Lisbon Humberto Delgado

Tue 1/13

7:05 am-10:54 pm

2 stops20h 49m

$567

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Fri 1/23

3:12 pm-8:10 am

1 stop11h 58m

Lisbon Humberto Delgado

Fri 1/30

11:20 am-6:54 pm

2 stops36h 34m

$582

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Thu 1/8

3:12 pm-8:10 am

1 stop11h 58m

Lisbon Humberto Delgado

Thu 1/15

10:15 am-6:50 pm

1 stop13h 35m

$590

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Wed 1/21

2:31 pm-8:10 am

2 stops12h 39m

Lisbon Humberto Delgado

Sun 1/25

5:00 am-6:50 pm

2 stops18h 50m

$591

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Thu 1/8

4:10 pm-9:20 am

2 stops36h 10m

Lisbon Humberto Delgado

Thu 1/15

10:15 am-6:50 pm

1 stop13h 35m

$596

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Thu 1/8

2:31 pm-9:20 am

2 stops37h 49m

Lisbon Humberto Delgado

Thu 1/15

10:15 am-6:50 pm

1 stop13h 35m

$597

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Thu 1/8

6:00 am-9:05 am

1 stop22h 05m

Lisbon Humberto Delgado

Thu 1/15

10:55 am-10:54 pm

1 stop16h 59m

$598

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Fri 1/23

3:12 pm-8:10 am

1 stop11h 58m

Lisbon Humberto Delgado

Fri 1/30

10:15 am-6:50 pm

1 stop13h 35m

$599

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Thu 1/8

3:12 pm-9:20 am

2 stops37h 08m

Lisbon Humberto Delgado

Thu 1/15

11:20 am-9:01 am

2 stops50h 41m

$600

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Thu 1/8

3:12 pm-9:20 am

2 stops37h 08m

Lisbon Humberto Delgado

Thu 1/15

11:20 am-9:01 am

2 stops50h 41m

$601

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 11 resultsSorted by cheapest first
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See travel insights to Lisbon from

How to get the cheapest flight ticket from Portland, Maine to Lisbon

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 day to depart on your flight to Lisbon?

Our data shows that Sunday is the least expensive day to fly to Lisbon. Tickets to fly out on this day can be as low as $681. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Portland, Maine to Lisbon for around $1,357.

What is the cheapest time of day to depart on your flight to Lisbon?

The cheapest time of day to fly to Lisbon is in the evening when flights can be purchased for as low as $722. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,096 on average. Flights to Lisbon from Portland, Maine in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Portland, Maine to Lisbon

Are you open to changing your travel dates? Check out the ideal times to fly from Portland, Maine to Lisbon according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland, Maine to Lisbon (PWM to LIS) flight deals and tips

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

Fastest flight time

12h 25m

Direct flights

None
The fastest flight from Portland, Maine to Lisbon takes 12h 25m
There are no direct flights from Portland, Maine to Lisbon. There are no popular flight routes from Portland, Maine to Lisbon.
Search flight deals

  • How far is Portland to Lisbon Humberto Delgado by plane?

    A flight from Portland to Lisbon Humberto Delgado will travel around 3121.9 mi. Typically, this will take 12h 25m by plane in normal conditions.

  • When did momondo last update prices for flights from Portland Airport to Lisbon Humberto Delgado Airport?

    Prices for flights from Portland Airport to Lisbon Humberto Delgado Airport refresh daily.

  • How many operators does momondo search for flights from Portland Airport to Lisbon Humberto Delgado Airport?

  • How old do you have to be to fly from Portland Airport to Lisbon Humberto Delgado Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Lisbon Humberto Delgado Airport.

  • What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?

    The necessary travel and health documents for your Lisbon Humberto Delgado Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Portland, Maine to Lisbon?

Best airlines flying from Portland, Maine to Lisbon

Compare and see reviews for airlines that fly from Portland, Maine to Lisbon with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $578Free CancellationRating
7.4
9,092 reviews
Search United Airlines flights

Traveling to a place near Lisbon?

Book flights to Lisbon if you plan to visit one of these locations
Sintra
Ericeira
Fátima
Nazaré
Oeiras
Setúbal
Peniche
Estoril
Leiria
Sesimbra
Tomar
Almada
Evora
Figueira da Foz
Zambujeira do Mar
Batalha
Comporta
Torres Vedras
Sines
Óbidos

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Lisbon?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Portland to Lisbon for you.

Can I find flights from Portland to Lisbon with flexible booking policies on momondo?

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

How can momondo help me find flights from Portland to Lisbon?

Once you have performed a search for Portland to Lisbon 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 Portland to Lisbon right now. Can momondo alert me if prices change?

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

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