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Cheap flights from Portland to Lisbon from £263

PDX — LIS
5 Dec — 12 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portland to Lisbon

Enter your travel dates to find the best prices.

Cheapest flights from Portland to Lisbon

Mon 30/1114:45 -
1 stop14h 00m
Thu 10/1214:00 -
1 stop35h 00m
Deal found 3/11£462
Sat 28/1114:45 -
1 stop14h 05m
Tue 8/1213:55 -
1 stop35h 05m
Deal found 3/11£499
Sat 28/1114:45 -
1 stop14h 05m
Sun 6/1214:00 -
1 stop35h 00m
Deal found 3/11£536
Tue 1/1207:10 -
1 stop16h 50m
Tue 8/1205:00 -
2 stops20h 19m
Deal found 2/11£552
Tue 1/1207:10 -
1 stop16h 50m
Tue 8/1211:30 -
1 stop32h 10m
Deal found 3/11£585
Tue 1/1207:00 -
2 stops24h 10m
Wed 9/1205:00 -
1 stop14h 40m
Deal found 3/11£588
Tue 1/1207:10 -
1 stop16h 50m
Fri 11/1205:00 -
2 stops20h 19m
Deal found 3/11£592
Wed 9/1207:10 -
2 stops24h 00m
Tue 22/1205:00 -
2 stops24h 00m
Deal found 3/11£595
Tue 1/1207:10 -
1 stop16h 50m
Thu 10/1210:00 -
1 stop20h 18m
Deal found 3/11£600

Find flight deals from Portland to Lisbon

Round-trip from

£462

One-way from

£263

Popular in

June

Cheapest in

February

Average price

£539
Icelandair
  • Icelandair
  • 30/11-10/12
  • 2 total stops
  • 49h 00m total
  • Portland to Lisbon
Search Deals
Delta
  • Delta
  • 16/2-31/12
  • 1 total stop
  • 16h 55m total
  • Portland to Lisbon
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (£159 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£23 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Portland to Lisbon that are best for you.

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Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Tue 16/2

07:05-08:00

1 stop16h 55m

Lisbon Humberto Delgado

Wed 31/12

00:00-15:00

Nonstop0h 00m

£263

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Tue 16/3

08:15-10:20

1 stop19h 05m

Lisbon Humberto Delgado

Wed 31/12

00:00-15:00

Nonstop0h 00m

£263

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Sat 10/4

23:10-10:30

1 stop27h 20m

Lisbon Humberto Delgado

Wed 31/12

00:00-15:00

Nonstop0h 00m

£272

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Tue 4/5

20:25-10:05

1 stop29h 40m

Lisbon Humberto Delgado

Wed 31/12

00:00-15:00

Nonstop0h 00m

£312

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Sun 2/5

05:30-10:45

2 stops21h 15m

Lisbon Humberto Delgado

Wed 31/12

00:00-15:00

Nonstop0h 00m

£312

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Tue 4/5

05:15-08:20

2 stops19h 05m

Lisbon Humberto Delgado

Wed 31/12

00:00-15:00

Nonstop0h 00m

£312

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Sat 1/5

22:59-08:20

2 stops25h 21m

Lisbon Humberto Delgado

Wed 31/12

00:00-15:00

Nonstop0h 00m

£312

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Mon 15/3

14:20-14:40

1 stop17h 20m

Lisbon Humberto Delgado

Wed 24/3

05:00-12:20

1 stop14h 20m

£567

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Wed 9/12

07:10-08:00

1 stop16h 50m

Lisbon Humberto Delgado

Tue 22/12

05:00-19:01

2 stops22h 01m

£592

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Mon 4/1

07:00-08:00

1 stop17h 00m

Lisbon Humberto Delgado

Wed 20/1

05:00-17:06

2 stops20h 06m

£596

Flights are sorted by cheapest return flights first.

Deals found on 31/10

Showing 1-10 of 21 resultsSorted by cheapest first
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Best time to book a flight from Portland to Lisbon

Have a flexible travel schedule? Discover the best time to fly to Lisbon from Portland with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from Portland to Lisbon

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

The best time to book flights from Portland to Lisbon is 12 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Portland to Lisbon?

Currently, February is the cheapest month in which you can book a flight from Portland to Lisbon (average of £445). Flying from Portland to Lisbon in June is currently the most expensive (average of £1,006). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from Portland to Lisbon?

Airfare is typical for this route at the moment.

Portland to Lisbon flights typically cost between £414 and £628 in November.
The cheapest return price found within the last 5 days was £462 on Icelandair (30 Nov–10 Dec).

Related info for your journey

  • How long is the flight from Portland to Lisbon?

    Airlines like United Airlines and Delta fly from Portland to Lisbon in about 17h. The time it takes to get you to your destination can typically vary by up to 1h 55m. The distance between Portland and Lisbon is about 5295 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from Portland to Lisbon that include hotel bookings?

    Yes. In addition to deals on Portland to Lisbon flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Portland to Lisbon?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Lisbon.

  • Can I find deals for business class flights from Portland to Lisbon?

    Yes. Cheapflights offers flight deals from Portland to Lisbon by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portland to Lisbon?

    Currently, February is the cheapest month in which you can book a flight from Portland to Lisbon (average of £445). Flying from Portland to Lisbon in June is currently the most expensive (average of £1,006). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Lisbon?

Book flights to Lisbon if you plan to visit one of these locations
Nazaré
Fátima
Evora
Madeira
Oeiras
Óbidos
Almada
Setúbal
Tomar
Figueira da Foz
Estoril
Costa da Caparica

Browse thousands of different options on Cheapflights for your next trip

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Cheapflights helps you search for flights from Portland to Lisbon via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Portland to Lisbon?

Cheapflights simply makes it quick and affordable to book flights from Portland to Lisbon by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Portland to Lisbon with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Portland to Lisbon flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Portland to Lisbon become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Lisbon from Portland today and book when prices fit your budget.

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