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Cheap flights from Portland, Maine to Lisbon from $507

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 5/23. 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
1 adult, Economy, 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
3:39 pm - 3:25 pm
PWM
-
LIS
18h 46m
2 stops
United Airlines Logo
11:25 am - 9:19 pm
LIS
-
PWM
38h 54m
2 stops
$676United Airlines
Thu, Apr 30 - Thu, May 7
Multiple Airlines Logo
3:02 pm - 3:40 pm
PWM
-
LIS
19h 38m
2 stops
Multiple Airlines Logo
7:10 am - 11:27 pm
LIS
-
PWM
21h 17m
2 stops
$693Multiple Airlines
Wed, Apr 29 - Mon, May 4
United Airlines Logo
3:39 pm - 3:25 pm
PWM
-
LIS
18h 46m
2 stops
United Airlines Logo
12:20 pm - 10:18 am
LIS
-
PWM
26h 58m
1 stop
$696United Airlines
Thu, Apr 30 - Thu, May 7
United Airlines Logo
7:36 pm - 9:20 am
PWM
-
LIS
32h 44m
2 stops
United Airlines Logo
6:45 am - 9:40 pm
LIS
-
PWM
43h 55m
2 stops
$705United Airlines
Sun, Apr 12 - Sun, Apr 19
United Airlines Logo
7:33 pm - 1:40 pm
PWM
-
LIS
37h 07m
2 stops
United Airlines Logo
5:05 am - 10:18 am
LIS
-
PWM
34h 13m
2 stops
$715United Airlines
Wed, Apr 29 - Mon, May 4
United Airlines Logo
3:22 pm - 3:30 pm
PWM
-
LIS
19h 08m
2 stops
United Airlines Logo
5:05 am - 11:59 pm
LIS
-
PWM
23h 54m
2 stops
$721United Airlines
Fri, Apr 24 - Sat, May 2
KLM Logo
6:25 am - 8:00 am
PWM
-
LIS
20h 35m
1 stop
KLM Logo
5:00 am - 12:46 am
LIS
-
PWM
24h 46m
2 stops
$743KLM
Sun, Apr 12 - Sun, Apr 19
Air France Logo
2:51 pm - 8:00 am
PWM
-
LIS
12h 09m
1 stop
Air France Logo
6:50 pm - 2:11 pm
LIS
-
PWM
24h 21m
2 stops
$744Air France
Mon, Apr 27 - Mon, May 4
Multiple Airlines Logo
2:51 pm - 10:55 am
PWM
-
LIS
15h 04m
2 stops
Multiple Airlines Logo
6:50 pm - 2:11 pm
LIS
-
PWM
24h 21m
2 stops
$753Multiple Airlines
Mon, Apr 27 - Mon, May 4
Multiple Airlines Logo
2:51 pm - 8:00 am
PWM
-
LIS
12h 09m
1 stop
Multiple Airlines Logo
6:50 pm - 2:11 pm
LIS
-
PWM
24h 21m
2 stops
$758Multiple Airlines
Wed, Apr 29 - Mon, May 4

American Airlines flights from Portland, Maine to Lisbon

Our best American Airlines deals on Portland, Maine to Lisbon flight tickets
American Airlines
Apr 29
PWM6:00 amPortland
22h 05m
1 stop
LIS9:05 amLisbon Humberto Delgado
May 6
LIS11:05 amLisbon Humberto Delgado
17h 22m
1 stop
PWM11:27 pmPortland
$844
American Airlines
Apr 30
PWM6:00 amPortland
22h 05m
1 stop
LIS9:05 amLisbon Humberto Delgado
May 7
LIS11:05 amLisbon Humberto Delgado
17h 22m
1 stop
PWM11:27 pmPortland
$854
American Airlines
Aug 24
PWM3:03 pmPortland
13h 02m
1 stop
LIS9:05 amLisbon Humberto Delgado
Sep 2
LIS8:55 amLisbon Humberto Delgado
19h 56m
2 stops
PWM11:51 pmPortland
$927

United Airlines flights from Portland, Maine to Lisbon

Our best United Airlines deals on Portland, Maine to Lisbon flight tickets
United Airlines
Apr 30
PWM3:39 pmPortland
18h 46m
2 stops
LIS3:25 pmLisbon Humberto Delgado
May 7
LIS11:25 amLisbon Humberto Delgado
38h 54m
2 stops
PWM9:19 pmPortland
$676
United Airlines
Apr 30
PWM3:39 pmPortland
18h 46m
2 stops
LIS3:25 pmLisbon Humberto Delgado
May 7
LIS12:20 pmLisbon Humberto Delgado
26h 58m
1 stop
PWM10:18 amPortland
$696
United Airlines
Apr 12
PWM7:36 pmPortland
32h 44m
2 stops
LIS9:20 amLisbon Humberto Delgado
Apr 19
LIS6:45 amLisbon Humberto Delgado
43h 55m
2 stops
PWM9:40 pmPortland
$705

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 March 20, 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

Cheapest round-trip

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Thu 4/30

3:39 pm-3:25 pm

2 stops18h 46m

Lisbon Humberto Delgado

Thu 5/7

11:25 am-9:19 pm

2 stops38h 54m

$676

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Wed 4/29

3:02 pm-3:40 pm

2 stops19h 38m

Lisbon Humberto Delgado

Mon 5/4

7:10 am-11:27 pm

2 stops21h 17m

$693

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Thu 4/30

3:39 pm-3:25 pm

2 stops18h 46m

Lisbon Humberto Delgado

Thu 5/7

12:20 pm-10:18 am

1 stop26h 58m

$696

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Sun 4/12

7:36 pm-9:20 am

2 stops32h 44m

Lisbon Humberto Delgado

Sun 4/19

6:45 am-9:40 pm

2 stops43h 55m

$705

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Wed 4/29

7:33 pm-1:40 pm

2 stops37h 07m

Lisbon Humberto Delgado

Mon 5/4

5:05 am-10:18 am

2 stops34h 13m

$715

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Fri 4/24

3:22 pm-3:30 pm

2 stops19h 08m

Lisbon Humberto Delgado

Sat 5/2

5:05 am-11:59 pm

2 stops23h 54m

$721

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Sun 4/12

6:25 am-8:00 am

1 stop20h 35m

Lisbon Humberto Delgado

Sun 4/19

5:00 am-12:46 am

2 stops24h 46m

$743
Quickest round-trip

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Mon 4/27

2:51 pm-8:00 am

1 stop12h 09m

Lisbon Humberto Delgado

Mon 5/4

6:50 pm-2:11 pm

2 stops24h 21m

$744

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Mon 4/27

2:51 pm-10:55 am

2 stops15h 04m

Lisbon Humberto Delgado

Mon 5/4

6:50 pm-2:11 pm

2 stops24h 21m

$753

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Wed 4/29

2:51 pm-8:00 am

1 stop12h 09m

Lisbon Humberto Delgado

Mon 5/4

6:50 pm-2:11 pm

2 stops24h 21m

$758

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?

WestJet and American 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 64% of people opting to fly with this airline when traveling to Lisbon. Keep in mind that there are 21 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

15h 10m

Direct flights

None
The fastest flight from Portland, Maine to Lisbon takes 15h 10m
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 15h 10m 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 $550Free CancellationRating
7.4
9,450 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
Fátima
Ericeira
Nazaré
Setúbal
Peniche
Estoril
Evora
Oeiras
Sesimbra
Leiria
Figueira da Foz
Tomar
Zambujeira do Mar
Óbidos
Batalha
Sines
Torres Vedras
Comporta
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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