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Cheap flights from Portland to Lisbon from $299

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 to Lisbon departing on 8/25. 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 to Lisbon

Cheap round-trip flights

Enter your travel dates to find the best prices.
KLM Logo
7:00 am - 8:00 am
PDX
-
LIS
17h 00m
1 stop
KLM Logo
3:35 pm - 11:20 am
LIS
-
PDX
27h 45m
1 stop
$790KLM
Tue, Oct 20 - Tue, Nov 10
Multiple Airlines Logo
11:10 am - 11:15 am
PDX
-
LIS
16h 05m
2 stops
Multiple Airlines Logo
3:35 pm - 11:20 am
LIS
-
PDX
27h 45m
1 stop
$794Multiple Airlines
Tue, Oct 20 - Tue, Nov 10
Multiple Airlines Logo
6:45 pm - 5:45 pm
PDX
-
LIS
16h 00m
1 stop
Multiple Airlines Logo
8:20 am - 11:51 pm
LIS
-
PDX
23h 31m
2 stops
$798Multiple Airlines
Sun, Oct 25 - Tue, Nov 3
Multiple Airlines Logo
6:45 pm - 9:45 pm
PDX
-
LIS
20h 00m
1 stop
Multiple Airlines Logo
6:30 am - 9:20 pm
LIS
-
PDX
22h 50m
2 stops
$802Multiple Airlines
Sun, Oct 25 - Tue, Nov 3
Delta Logo
11:55 am - 2:55 pm
PDX
-
LIS
19h 00m
2 stops
Delta Logo
5:00 am - 11:47 pm
LIS
-
PDX
26h 47m
2 stops
$803Delta
Tue, Oct 20 - Tue, Nov 10
Delta Logo
2:20 pm - 2:40 pm
PDX
-
LIS
17h 20m
1 stop
Delta Logo
5:00 am - 9:27 pm
LIS
-
PDX
24h 27m
2 stops
$804Delta
Sun, Oct 25 - Tue, Nov 3
KLM Logo
10:05 pm - 8:00 am
PDX
-
LIS
25h 55m
1 stop
KLM Logo
11:30 am - 11:47 pm
LIS
-
PDX
20h 17m
2 stops
$807KLM
Sun, Nov 22 - Fri, Dec 4
KLM Logo
10:05 pm - 8:00 am
PDX
-
LIS
25h 55m
1 stop
KLM Logo
11:30 am - 11:47 pm
LIS
-
PDX
20h 17m
2 stops
$808KLM
Sun, Nov 22 - Fri, Dec 4
Air France Logo
6:15 am - 9:00 am
PDX
-
LIS
18h 45m
2 stops
Air France Logo
5:30 am - 7:08 pm
LIS
-
PDX
21h 38m
2 stops
$811Air France
Mon, Nov 23 - Fri, Nov 27
Multiple Airlines Logo
7:05 pm - 9:05 am
PDX
-
LIS
30h 00m
3 stops
Multiple Airlines Logo
6:15 am - 1:50 pm
LIS
-
PDX
39h 35m
3 stops
$813Multiple Airlines
Sun, Aug 16 - Mon, Aug 24

KLM flights from Portland to Lisbon

Our best KLM deals on Portland to Lisbon flight tickets
KLM
Oct 20
PDX7:00 amPortland
17h 00m
1 stop
LIS8:00 amLisbon Humberto Delgado
Nov 10
LIS3:35 pmLisbon Humberto Delgado
27h 45m
1 stop
PDX11:20 amPortland
$790
KLM
Nov 22
PDX10:05 pmPortland
25h 55m
1 stop
LIS8:00 amLisbon Humberto Delgado
Dec 4
LIS11:30 amLisbon Humberto Delgado
20h 17m
2 stops
PDX11:47 pmPortland
$807
KLM
Nov 22
PDX10:05 pmPortland
25h 55m
1 stop
LIS8:00 amLisbon Humberto Delgado
Dec 4
LIS11:30 amLisbon Humberto Delgado
20h 17m
2 stops
PDX11:47 pmPortland
$808

Delta flights from Portland to Lisbon

Our best Delta deals on Portland to Lisbon flight tickets
Delta
Oct 20
PDX11:55 amPortland
19h 00m
2 stops
LIS2:55 pmLisbon Humberto Delgado
Nov 10
LIS5:00 amLisbon Humberto Delgado
26h 47m
2 stops
PDX11:47 pmPortland
$803
Delta
Oct 25
PDX2:20 pmPortland
17h 20m
1 stop
LIS2:40 pmLisbon Humberto Delgado
Nov 3
LIS5:00 amLisbon Humberto Delgado
24h 27m
2 stops
PDX9:27 pmPortland
$804
Delta
Oct 13
PDX9:40 amPortland
17h 35m
2 stops
LIS11:15 amLisbon Humberto Delgado
Oct 27
LIS5:00 amLisbon Humberto Delgado
23h 53m
2 stops
PDX9:53 pmPortland
$847

momondo Fare Finder

 
Customize your flight search to find flights from Portland 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 3, 2026.
Use the filters below to find and compare flights from Portland to Lisbon that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 10/20

7:00 am-8:00 am

1 stop17h 00m

Lisbon Humberto Delgado

Tue 11/10

3:35 pm-11:20 am

1 stop27h 45m

$790

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 10/20

11:10 am-11:15 am

2 stops16h 05m

Lisbon Humberto Delgado

Tue 11/10

3:35 pm-11:20 am

1 stop27h 45m

$794
Quickest round-trip

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 10/25

6:45 pm-5:45 pm

1 stop16h 00m

Lisbon Humberto Delgado

Tue 11/3

8:20 am-11:51 pm

2 stops23h 31m

$798

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 10/25

6:45 pm-9:45 pm

1 stop20h 00m

Lisbon Humberto Delgado

Tue 11/3

6:30 am-9:20 pm

2 stops22h 50m

$802

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 10/20

11:55 am-2:55 pm

2 stops19h 00m

Lisbon Humberto Delgado

Tue 11/10

5:00 am-11:47 pm

2 stops26h 47m

$803

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 10/25

2:20 pm-2:40 pm

1 stop17h 20m

Lisbon Humberto Delgado

Tue 11/3

5:00 am-9:27 pm

2 stops24h 27m

$804

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 11/22

10:05 pm-8:00 am

1 stop25h 55m

Lisbon Humberto Delgado

Fri 12/4

11:30 am-11:47 pm

2 stops20h 17m

$807

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 11/22

10:05 pm-8:00 am

1 stop25h 55m

Lisbon Humberto Delgado

Fri 12/4

11:30 am-11:47 pm

2 stops20h 17m

$808

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 11/23

6:15 am-9:00 am

2 stops18h 45m

Lisbon Humberto Delgado

Fri 11/27

5:30 am-7:08 pm

2 stops21h 38m

$811

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 8/16

7:05 pm-9:05 am

3 stops30h 00m

Lisbon Humberto Delgado

Mon 8/24

6:15 am-1:50 pm

3 stops39h 35m

$813

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Lisbon from

How to get the cheapest flight ticket from Portland 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 and Lisbon?

What is the cheapest month to fly to Lisbon?

In general, February is the cheapest month to fly from Portland to Lisbon. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $603. If you are unable to visit Lisbon during the month of February, then departing from Portland during the month November is also very affordable. Most momondo users find prices during this month for around $625.

How far in advance should I book a flight from Portland to Lisbon?

You are more likely to see cheaper flights to Lisbon from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Lisbon for around $829 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Lisbon from Portland for as low as $704 on momondo.

Can stopping save me money on Portland to Lisbon flights?

You could potentially save up to 9% on your flight if you consider stops on a Portland to Lisbon flight.

How have Portland to Lisbon flight prices changed over time?

As of June 2026, prices for Portland to Lisbon flights are approximately 26% cheaper when compared to flights at the same time last year.

When to book flights from Portland to Lisbon

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

Cheap Portland to Lisbon (PDX to LIS) flight deals and tips

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

Fastest flight time

13h 47m

Direct flights

None
The fastest flight from Portland to Lisbon takes 13h 47m
There are no direct flights from Portland to Lisbon. There are no popular flight routes from Portland to Lisbon.
Search flight deals

Frequently asked questions about flying from Portland to Lisbon

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

    The distance between Portland and Lisbon Humberto Delgado is about 5304.2 mi. Flights usually cover this in 13h 47m, depending on flying conditions and air traffic around both airports.

  • 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 are refreshed on a daily basis.

  • 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 travel and health documents you'll need for your trip to Lisbon Humberto Delgado Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lisbon Humberto Delgado Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from Portland to Lisbon

Compare and see reviews for airlines that fly from Portland to Lisbon with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom $360Free CancellationRating
7.0
665 reviews
Search Icelandair flights
KLMPriceFrom $492Free CancellationRating
7.8
1,524 reviews
Search KLM flights
LufthansaPriceFrom $501Free CancellationRating
6.8
8,036 reviews
Search Lufthansa flights
British AirwaysPriceFrom $510Free CancellationRating
6.7
8,020 reviews
Search British Airways flights
DeltaPriceFrom $543Free CancellationRating
7.9
8,399 reviews
Search Delta flights
United AirlinesPriceFrom $549Free CancellationRating
7.4
9,772 reviews
Search United Airlines flights
Air CanadaPriceFrom $577Free CancellationRating
7.1
11,122 reviews
Search Air Canada 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
Estoril
Peniche
Evora
Oeiras
Leiria
Figueira da Foz
Sesimbra
Zambujeira do Mar
Batalha
Óbidos
Tomar
Comporta
Sines
Torres Vedras
Costa da Caparica

Why use momondo?

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

Finding the right flight to Lisbon from Portland is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Lisbon quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to Lisbon from Portland with this policy.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Portland to Lisbon.

I’m not ready to book a flight from Portland to Lisbon right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Portland to Lisbon flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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