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Cheap flights from Portland, Maine to Lisbon from $480

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to Lisbon departing on 5/14. 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.
United Airlines Logo
4:23 pm - 2:30 pm
PWM
-
LIS
18h 07m
2 stops
United Airlines Logo
5:00 am - 6:25 pm
LIS
-
PWM
17h 25m
2 stops
$515United Airlines
Tue, Mar 10 - Tue, Mar 17
United Airlines Logo
7:36 pm - 10:30 am
PWM
-
LIS
9h 54m
1 stop
United Airlines Logo
11:25 am - 9:40 pm
LIS
-
PWM
39h 15m
2 stops
$574United Airlines
Mon, Apr 13 - Mon, Apr 20
United Airlines Logo
6:04 am - 8:20 am
PWM
-
LIS
21h 16m
2 stops
United Airlines Logo
11:25 am - 9:40 pm
LIS
-
PWM
39h 15m
2 stops
$666United Airlines
Mon, Apr 13 - Mon, Apr 20
United Airlines Logo
3:44 pm - 11:00 am
PWM
-
LIS
15h 16m
2 stops
United Airlines Logo
11:55 am - 2:32 pm
LIS
-
PWM
30h 37m
1 stop
$710United Airlines
Tue, Mar 10 - Tue, Mar 17
KLM Logo
2:51 pm - 8:00 am
PWM
-
LIS
12h 09m
1 stop
KLM Logo
10:00 am - 12:46 am
LIS
-
PWM
19h 46m
1 stop
$722KLM
Mon, Apr 13 - Mon, Apr 20
Multiple Airlines Logo
5:40 pm - 5:55 pm
PWM
-
LIS
19h 15m
2 stops
Multiple Airlines Logo
7:20 am - 11:22 pm
LIS
-
PWM
21h 02m
2 stops
$773Multiple Airlines
Wed, Apr 1 - Wed, Apr 15
Scandinavian Airlines Logo
6:25 am - 8:55 am
PWM
-
LIS
45h 30m
2 stops
Scandinavian Airlines Logo
7:00 am - 11:59 pm
LIS
-
PWM
21h 59m
2 stops
$779Scandinavian Airlines
Thu, Apr 2 - Thu, Apr 9
Multiple Airlines Logo
2:30 pm - 10:45 am
PWM
-
LIS
15h 15m
2 stops
Multiple Airlines Logo
10:00 am - 12:46 am
LIS
-
PWM
19h 46m
1 stop
$804Multiple Airlines
Wed, Apr 1 - Wed, Apr 15
KLM Logo
2:30 pm - 2:35 pm
PWM
-
LIS
19h 05m
2 stops
KLM Logo
10:00 am - 11:59 pm
LIS
-
PWM
18h 59m
1 stop
$824KLM
Thu, Apr 2 - Sun, Apr 12
United Airlines Logo
7:33 pm - 10:30 am
PWM
-
LIS
9h 57m
1 stop
United Airlines Logo
12:20 pm - 6:58 pm
LIS
-
PWM
11h 38m
1 stop
$908United Airlines
Wed, Apr 1 - Wed, Apr 15

United Airlines flights from Portland, Maine to Lisbon

Our best United Airlines deals on Portland, Maine to Lisbon flight tickets
United Airlines
Mar 10
PWM4:23 pmPortland
18h 07m
2 stops
LIS2:30 pmLisbon Humberto Delgado
Mar 17
LIS5:00 amLisbon Humberto Delgado
17h 25m
2 stops
PWM6:25 pmPortland
$515
United Airlines
Apr 13
PWM7:36 pmPortland
9h 54m
1 stop
LIS10:30 amLisbon Humberto Delgado
Apr 20
LIS11:25 amLisbon Humberto Delgado
39h 15m
2 stops
PWM9:40 pmPortland
$574
United Airlines
Apr 13
PWM6:04 amPortland
21h 16m
2 stops
LIS8:20 amLisbon Humberto Delgado
Apr 20
LIS11:25 amLisbon Humberto Delgado
39h 15m
2 stops
PWM9:40 pmPortland
$666

KLM flights from Portland, Maine to Lisbon

Our best KLM deals on Portland, Maine to Lisbon flight tickets
KLM
Apr 13
PWM2:51 pmPortland
12h 09m
1 stop
LIS8:00 amLisbon Humberto Delgado
Apr 20
LIS10:00 amLisbon Humberto Delgado
19h 46m
1 stop
PWM12:46 amPortland
$722
KLM
Apr 2
PWM2:30 pmPortland
19h 05m
2 stops
LIS2:35 pmLisbon Humberto Delgado
Apr 12
LIS10:00 amLisbon Humberto Delgado
18h 59m
1 stop
PWM11:59 pmPortland
$824
KLM
Apr 2
PWM2:30 pmPortland
19h 05m
2 stops
LIS2:35 pmLisbon Humberto Delgado
Apr 9
LIS10:00 amLisbon Humberto Delgado
18h 59m
1 stop
PWM11:59 pmPortland
$977

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 January 24, 2026.
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

Tue 3/10

4:23 pm-2:30 pm

2 stops18h 07m

Lisbon Humberto Delgado

Tue 3/17

5:00 am-6:25 pm

2 stops17h 25m

$515

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Mon 4/13

7:36 pm-10:30 am

1 stop9h 54m

Lisbon Humberto Delgado

Mon 4/20

11:25 am-9:40 pm

2 stops39h 15m

$574

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Mon 4/13

6:04 am-8:20 am

2 stops21h 16m

Lisbon Humberto Delgado

Mon 4/20

11:25 am-9:40 pm

2 stops39h 15m

$666

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Tue 3/10

3:44 pm-11:00 am

2 stops15h 16m

Lisbon Humberto Delgado

Tue 3/17

11:55 am-2:32 pm

1 stop30h 37m

$710

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Mon 4/13

2:51 pm-8:00 am

1 stop12h 09m

Lisbon Humberto Delgado

Mon 4/20

10:00 am-12:46 am

1 stop19h 46m

$722

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Wed 4/1

5:40 pm-5:55 pm

2 stops19h 15m

Lisbon Humberto Delgado

Wed 4/15

7:20 am-11:22 pm

2 stops21h 02m

$773

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Thu 4/2

6:25 am-8:55 am

2 stops45h 30m

Lisbon Humberto Delgado

Thu 4/9

7:00 am-11:59 pm

2 stops21h 59m

$779

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Wed 4/1

2:30 pm-10:45 am

2 stops15h 15m

Lisbon Humberto Delgado

Wed 4/15

10:00 am-12:46 am

1 stop19h 46m

$804

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Thu 4/2

2:30 pm-2:35 pm

2 stops19h 05m

Lisbon Humberto Delgado

Sun 4/12

10:00 am-11:59 pm

1 stop18h 59m

$824

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Wed 4/1

7:33 pm-10:30 am

1 stop9h 57m

Lisbon Humberto Delgado

Wed 4/15

12:20 pm-6:58 pm

1 stop11h 38m

$908

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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 airline that flies from Portland to Lisbon Humberto Delgado?

Scandinavian Airlines and United Airlines are the most popular carriers operating from Portland to Lisbon Humberto Delgado

What airlines fly to Lisbon?

TAP AIR PORTUGAL, Delta and Air France are the top three most popular airlines that fly to Lisbon from Portland, Maine according to our data. TAP AIR PORTUGAL is the first choice among our users, with 62% of people opting to fly with this airline when traveling to Lisbon. Keep in mind that there are 22 different airlines that fly to Lisbon on a routine basis, so you have a few additional options to choose from.

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

9h 54m

Direct flights

None
The fastest flight from Portland, Maine to Lisbon takes 9h 54m
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 9h 54m 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
9,198 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
Setúbal
Estoril
Peniche
Leiria
Oeiras
Sesimbra
Evora
Tomar
Figueira da Foz
Zambujeira do Mar
Batalha
Óbidos
Comporta
Torres Vedras
Sines
Almada

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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