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Cheap flights from Portland, Maine to Lisbon from $463

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 8/9. 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

Discover deals from 900+ travel sites with momondo.

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
6:00 am - 8:20 am
PWM
-
LIS
21h 20m
1 stop
United Airlines Logo
11:25 am - 11:28 pm
LIS
-
PWM
41h 03m
2 stops
$792United Airlines
Fri, Oct 16 - Fri, Oct 23
United Airlines Logo
7:57 am - 8:20 am
PWM
-
LIS
19h 23m
1 stop
United Airlines Logo
12:20 pm - 2:38 pm
LIS
-
PWM
31h 18m
1 stop
$806United Airlines
Fri, Oct 16 - Fri, Oct 23
United Airlines Logo
7:57 am - 8:20 am
PWM
-
LIS
19h 23m
1 stop
United Airlines Logo
7:25 am - 7:24 pm
LIS
-
PWM
16h 59m
2 stops
$855United Airlines
Sat, Oct 17 - Sat, Oct 24
United Airlines Logo
3:31 pm - 8:20 am
PWM
-
LIS
11h 49m
1 stop
United Airlines Logo
10:25 am - 11:28 pm
LIS
-
PWM
18h 03m
1 stop
$856United Airlines
Sun, Oct 18 - Fri, Oct 23
United Airlines Logo
7:58 am - 8:20 am
PWM
-
LIS
19h 22m
2 stops
United Airlines Logo
5:05 am - 11:59 pm
LIS
-
PWM
23h 54m
2 stops
$859United Airlines
Sat, Oct 17 - Sat, Oct 24
United Airlines Logo
7:25 pm - 10:30 am
PWM
-
LIS
10h 05m
1 stop
United Airlines Logo
12:20 pm - 11:28 pm
LIS
-
PWM
16h 08m
2 stops
$861United Airlines
Sun, Oct 18 - Fri, Oct 23
Air Canada Logo
6:00 am - 9:20 am
PWM
-
LIS
46h 20m
2 stops
Air Canada Logo
11:25 am - 11:28 pm
LIS
-
PWM
41h 03m
2 stops
$874Air Canada
Sat, Oct 17 - Fri, Oct 23
Delta Logo
6:30 am - 8:50 am
PWM
-
LIS
21h 20m
2 stops
Delta Logo
5:00 am - 11:30 pm
LIS
-
PWM
23h 30m
2 stops
$879Delta
Mon, Aug 3 - Wed, Aug 19
United Airlines Logo
7:16 pm - 10:30 am
PWM
-
LIS
10h 14m
1 stop
United Airlines Logo
12:20 pm - 11:59 pm
LIS
-
PWM
16h 39m
1 stop
$887United Airlines
Mon, Aug 3 - Wed, Aug 19
Multiple Airlines Logo
2:53 pm - 10:45 am
PWM
-
LIS
14h 52m
2 stops
Multiple Airlines Logo
7:45 pm - 4:01 pm
LIS
-
PWM
25h 16m
2 stops
$888Multiple Airlines
Tue, Aug 11 - Tue, Aug 18

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Delta flights from Portland, Maine to Lisbon

Our best Delta deals on Portland, Maine to Lisbon flight tickets
Delta
Aug 3
PWM6:30 amPortland
21h 20m
2 stops
LIS8:50 amLisbon Humberto Delgado
Aug 19
LIS5:00 amLisbon Humberto Delgado
23h 30m
2 stops
PWM11:30 pmPortland
$879
Delta
Oct 16
PWM4:50 pmPortland
20h 00m
2 stops
LIS5:50 pmLisbon Humberto Delgado
Oct 23
LIS5:00 amLisbon Humberto Delgado
37h 53m
2 stops
PWM1:53 pmPortland
$899
Delta
Aug 27
PWM2:53 pmPortland
19h 02m
2 stops
LIS2:55 pmLisbon Humberto Delgado
Sep 19
LIS5:00 amLisbon Humberto Delgado
23h 56m
2 stops
PWM11:56 pmPortland
$954

Air Canada flights from Portland, Maine to Lisbon

Our best Air Canada deals on Portland, Maine to Lisbon flight tickets
Air Canada
Oct 17
PWM6:00 amPortland
46h 20m
2 stops
LIS9:20 amLisbon Humberto Delgado
Oct 23
LIS11:25 amLisbon Humberto Delgado
41h 03m
2 stops
PWM11:28 pmPortland
$874
Air Canada
Oct 18
PWM6:00 amPortland
22h 20m
2 stops
LIS9:20 amLisbon Humberto Delgado
Oct 23
LIS11:25 amLisbon Humberto Delgado
26h 43m
2 stops
PWM9:08 amPortland
$961
Air Canada
Aug 27
PWM10:45 amPortland
17h 35m
3 stops
LIS9:20 amLisbon Humberto Delgado
Sep 19
LIS11:25 amLisbon Humberto Delgado
26h 43m
3 stops
PWM9:08 amPortland
$1,566

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 June 29, 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

Fri 10/16

6:00 am-8:20 am

1 stop21h 20m

Lisbon Humberto Delgado

Fri 10/23

11:25 am-11:28 pm

2 stops41h 03m

$792

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Fri 10/16

7:57 am-8:20 am

1 stop19h 23m

Lisbon Humberto Delgado

Fri 10/23

12:20 pm-2:38 pm

1 stop31h 18m

$806

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Sat 10/17

7:57 am-8:20 am

1 stop19h 23m

Lisbon Humberto Delgado

Sat 10/24

7:25 am-7:24 pm

2 stops16h 59m

$855

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Sun 10/18

3:31 pm-8:20 am

1 stop11h 49m

Lisbon Humberto Delgado

Fri 10/23

10:25 am-11:28 pm

1 stop18h 03m

$856

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Sat 10/17

7:58 am-8:20 am

2 stops19h 22m

Lisbon Humberto Delgado

Sat 10/24

5:05 am-11:59 pm

2 stops23h 54m

$859
Quickest round-trip

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Sun 10/18

7:25 pm-10:30 am

1 stop10h 05m

Lisbon Humberto Delgado

Fri 10/23

12:20 pm-11:28 pm

2 stops16h 08m

$861

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Sat 10/17

6:00 am-9:20 am

2 stops46h 20m

Lisbon Humberto Delgado

Fri 10/23

11:25 am-11:28 pm

2 stops41h 03m

$874

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Mon 8/3

6:30 am-8:50 am

2 stops21h 20m

Lisbon Humberto Delgado

Wed 8/19

5:00 am-11:30 pm

2 stops23h 30m

$879

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Mon 8/3

7:16 pm-10:30 am

1 stop10h 14m

Lisbon Humberto Delgado

Wed 8/19

12:20 pm-11:59 pm

1 stop16h 39m

$887

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Tue 8/11

2:53 pm-10:45 am

2 stops14h 52m

Lisbon Humberto Delgado

Tue 8/18

7:45 pm-4:01 pm

2 stops25h 16m

$888

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 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 month to fly to Lisbon?

In general, June is the cheapest month to fly from Portland, Maine to Lisbon. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you are unable to visit Lisbon during the month of June, then departing from Portland, Maine during the month May is also very affordable. Most momondo users find prices during this month for around $0.

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

14h 52m

Direct flights

None
The fastest flight from Portland, Maine to Lisbon takes 14h 52m
There are no direct flights from Portland, Maine to Lisbon. There are no popular flight routes from Portland, Maine to Lisbon.
Search flight deals

Frequently asked questions about flying from Portland, Maine to Lisbon

  • 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 14h 52m 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
9,894 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
Figueira da Foz
Estoril
Peniche
Evora
Oeiras
Leiria
Batalha
Óbidos
Sesimbra
Zambujeira do Mar
Costa da Caparica
Tomar
Sines
Torres Vedras
Comporta

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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