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Cheap flights from Portland, Maine to Lisbon from $391

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 12/13. 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

United Airlines Logo
3:00 pm - 8:10 amPWM-LIS
12h 10m1 stop
United Airlines Logo
5:00 am - 5:48 pmLIS-PWM
17h 48m2 stops
$572United Airlines
Find Deal
Tue, Nov 11 - Tue, Nov 18
United Airlines Logo
7:22 pm - 10:15 amPWM-LIS
9h 53m1 stop
United Airlines Logo
11:20 am - 10:00 pmLIS-PWM
39h 40m2 stops
$612United Airlines
Find Deal
Mon, Dec 1 - Mon, Dec 8
United Airlines Logo
7:22 pm - 10:15 amPWM-LIS
9h 53m1 stop
United Airlines Logo
11:20 am - 6:54 pmLIS-PWM
36h 34m2 stops
$613United Airlines
Find Deal
Mon, Dec 1 - Mon, Dec 8
American Airlines Logo
6:39 pm - 9:05 amPWM-LIS
9h 26m1 stop
American Airlines Logo
11:05 am - 10:29 pmLIS-PWM
16h 24m1 stop
$629American Airlines
Find Deal
Mon, Dec 1 - Mon, Dec 8
American Airlines Logo
3:53 pm - 9:15 amPWM-LIS
12h 22m1 stop
American Airlines Logo
11:10 am - 12:07 pmLIS-PWM
29h 57m1 stop
$636American Airlines
Find Deal
Tue, Nov 11 - Tue, Nov 18
Turkish Airlines Logo
7:09 am - 11:35 pmPWM-LIS
35h 26m2 stops
Turkish Airlines Logo
10:55 am - 10:02 pmLIS-PWM
40h 07m2 stops
$771Turkish Airlines
Find Deal
Sat, Oct 4 - Wed, Oct 22
Delta Logo
2:35 pm - 10:35 amPWM-LIS
15h 00m2 stops
Delta Logo
5:30 am - 11:51 pmLIS-PWM
23h 21m2 stops
$780Delta
Find Deal
Mon, Dec 1 - Mon, Dec 8
Air Canada Logo
6:00 am - 8:55 amPWM-LIS
45h 55m2 stops
Air Canada Logo
11:20 am - 10:48 amLIS-PWM
52h 28m2 stops
$785Air Canada
Find Deal
Fri, Feb 13 - Sat, Feb 21
Turkish Airlines Logo
7:09 am - 11:35 pmPWM-LIS
35h 26m2 stops
Turkish Airlines Logo
10:55 am - 10:02 pmLIS-PWM
40h 07m2 stops
$838Turkish Airlines
Find Deal
Sat, Oct 4 - Wed, Oct 22
Delta Logo
2:38 pm - 8:00 amPWM-LIS
12h 22m1 stop
Delta Logo
10:00 am - 12:05 amLIS-PWM
19h 05m1 stop
$1,192Delta
Find Deal
Mon, Oct 6 - Mon, Oct 13

United Airlines flights from Portland, Maine to Lisbon

Our best United Airlines deals on Portland, Maine to Lisbon flight tickets
United Airlines
Nov 11
PWM3:00 pmPortland
12h 10m
1 stop
LIS8:10 amLisbon Humberto Delgado
Nov 18
LIS5:00 amLisbon Humberto Delgado
17h 48m
2 stops
PWM5:48 pmPortland
$572
Find similar
United Airlines
Dec 1
PWM7:22 pmPortland
9h 53m
1 stop
LIS10:15 amLisbon Humberto Delgado
Dec 8
LIS11:20 amLisbon Humberto Delgado
39h 40m
2 stops
PWM10:00 pmPortland
$612
Find similar
United Airlines
Dec 1
PWM7:22 pmPortland
9h 53m
1 stop
LIS10:15 amLisbon Humberto Delgado
Dec 8
LIS11:20 amLisbon Humberto Delgado
36h 34m
2 stops
PWM6:54 pmPortland
$613
Find similar

Turkish Airlines flights from Portland, Maine to Lisbon

Our best Turkish Airlines deals on Portland, Maine to Lisbon flight tickets
Turkish Airlines
Oct 4
PWM7:09 amPortland
35h 26m
2 stops
LIS11:35 pmLisbon Humberto Delgado
Oct 22
LIS10:55 amLisbon Humberto Delgado
40h 07m
2 stops
PWM10:02 pmPortland
$771
Find similar
Turkish Airlines
Oct 4
PWM7:09 amPortland
35h 26m
2 stops
LIS11:35 pmLisbon Humberto Delgado
Oct 22
LIS10:55 amLisbon Humberto Delgado
40h 07m
2 stops
PWM10:02 pmPortland
$838
Find similar
Turkish Airlines
Oct 4
PWM7:09 amPortland
35h 26m
2 stops
LIS11:35 pmLisbon Humberto Delgado
Oct 11
LIS4:45 pmLisbon Humberto Delgado
34h 17m
2 stops
PWM10:02 pmPortland
$863
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 August 21, 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

Tue 11/11

3:00 pm-8:10 am

1 stop12h 10m

Lisbon Humberto Delgado

Tue 11/18

5:00 am-5:48 pm

2 stops17h 48m

$572

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Mon 12/1

7:22 pm-10:15 am

1 stop9h 53m

Lisbon Humberto Delgado

Mon 12/8

11:20 am-10:00 pm

2 stops39h 40m

$612

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Mon 12/1

7:22 pm-10:15 am

1 stop9h 53m

Lisbon Humberto Delgado

Mon 12/8

11:20 am-6:54 pm

2 stops36h 34m

$613

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Mon 12/1

6:39 pm-9:05 am

1 stop9h 26m

Lisbon Humberto Delgado

Mon 12/8

11:05 am-10:29 pm

1 stop16h 24m

$629

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Tue 11/11

3:53 pm-9:15 am

1 stop12h 22m

Lisbon Humberto Delgado

Tue 11/18

11:10 am-12:07 pm

1 stop29h 57m

$636

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Sat 10/4

7:09 am-11:35 pm

2 stops35h 26m

Lisbon Humberto Delgado

Wed 10/22

10:55 am-10:02 pm

2 stops40h 07m

$771

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Mon 12/1

2:35 pm-10:35 am

2 stops15h 00m

Lisbon Humberto Delgado

Mon 12/8

5:30 am-11:51 pm

2 stops23h 21m

$780

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Fri 2/13

6:00 am-8:55 am

2 stops45h 55m

Lisbon Humberto Delgado

Sat 2/21

11:20 am-10:48 am

2 stops52h 28m

$785

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Sat 10/4

7:09 am-11:35 pm

2 stops35h 26m

Lisbon Humberto Delgado

Wed 10/22

10:55 am-10:02 pm

2 stops40h 07m

$838

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Mon 10/6

2:38 pm-8:00 am

1 stop12h 22m

Lisbon Humberto Delgado

Mon 10/13

10:00 am-12:05 am

1 stop19h 05m

$1,192

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 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 typical price of a round-trip flight between Portland, Maine and Lisbon?

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

Direct flights

None
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 26m 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
8,930 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
Nazaré
Ericeira
Setúbal
Oeiras
Almada
Peniche
Evora
Sesimbra
Estoril
Leiria
Figueira da Foz
Tomar
Zambujeira do Mar
Torres Vedras
Batalha
Óbidos
Comporta
Costa da Caparica

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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