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Portugal

$316+ Cheap flights from Oregon to Portugal

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LIS
Jun 7 — Jun 141
Sun 6/7
Sun 6/14
1 adult, Economy
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Cheap flight deals from Oregon to Portugal

Cheapest flights from Oregon to Portugal
Explore the most affordable flight options available from Oregon to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 8, 2026.

This Air Canada deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/197:05 pm
BOI
-
LIS
2 stops31h 15m
Air Canada
Tue 11/31:00 pm
LIS
-
BOI
2 stops37h 16m
Air Canada
Deal found 5/5$727
This United Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/186:25 am
BOI
-
LIS
2 stops18h 55m
United Airlines
Tue 11/31:00 pm
LIS
-
BOI
2 stops32h 56m
United Airlines
Deal found 5/5$728
This United Airlines deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:00 am
BOI
-
LIS
2 stops21h 20m
United Airlines
Tue 11/35:00 am
LIS
-
BOI
2 stops25h 05m
United Airlines
Deal found 5/8$730
This United Airlines deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:00 am
BOI
-
LIS
2 stops18h 10m
United Airlines
Tue 11/105:00 am
LIS
-
BOI
2 stops23h 15m
United Airlines
Deal found 5/7$731
This Air Canada deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/316:55 pm
BOI
-
LIS
2 stops34h 05m
Air Canada
Thu 11/121:00 pm
LIS
-
BOI
2 stops37h 16m
Air Canada
Deal found 5/6$732
This United Airlines deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/301:55 pm
RDM
-
LIS
2 stops61h 20m
United Airlines
Fri 11/61:00 pm
LIS
-
RDM
2 stops41h 54m
United Airlines
Deal found 5/7$739
This Delta deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/243:22 pm
BOI
-
LIS
2 stops35h 38m
Delta
Tue 11/35:30 am
LIS
-
BOI
2 stops24h 38m
Delta
Deal found 5/8$740
This United Airlines deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/112:25 pm
EUG
-
LIS
2 stops35h 45m
United Airlines
Thu 11/510:15 am
LIS
-
EUG
2 stops19h 23m
United Airlines
Deal found 5/7$743
This Delta deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/315:45 pm
BOI
-
LIS
2 stops32h 15m
Delta
Mon 11/912:20 pm
LIS
-
BOI
2 stops35h 29m
Delta
Deal found 5/7$752
This Delta deal was found by Cheapflights users on 5/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/181:15 pm
BOI
-
LIS
2 stops18h 40m
Delta
Mon 11/212:20 pm
LIS
-
BOI
2 stops34h 10m
Delta
Deal found 5/8$753
This American Airlines deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/15:45 pm
PDX
-
OPO
2 stops18h 15m
Multiple Airlines
Tue 11/248:20 am
OPO
-
PDX
2 stops23h 31m
Multiple Airlines
Deal found 5/3$754
This American Airlines deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/181:30 pm
PDX
-
OPO
2 stops18h 30m
American Airlines
Tue 11/178:20 am
OPO
-
PDX
2 stops23h 31m
American Airlines
Deal found 5/3$756

Find flight deals from Oregon to Portugal

Keep the following information in mind while searching for Oregon to Portugal flight deals. Data was last updated May 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$727
(United Airlines)

One-way from

$316
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$995
Provider with most accurate pricing for Portland-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Lisbon Humberto Delgado flights.
Search Deals
From Oregon to Portugal
Search Deals
One-way flight from Oregon to Portugal
Search Deals
Highest demand for flights based on searches. 27% potential increase in price ($312 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($45 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Oregon to Portugal 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, Cheapflights users made 2,558,603 searches. Data last updated May 8, 2026.
Use the filters below to find and compare flights from Oregon to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Tue 10/20

5:00 am-9:20 am

2 stops21h 20m

Lisbon Humberto Delgado

Tue 11/3

1:00 pm-2:56 pm

2 stops32h 56m

$727

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Tue 11/3

8:40 am-8:10 am

2 stops16h 30m

Lisbon Humberto Delgado

Tue 11/10

1:00 pm-2:56 pm

2 stops32h 56m

$728

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Tue 11/3

10:39 am-8:10 am

2 stops14h 31m

Lisbon Humberto Delgado

Fri 11/13

5:00 am-11:59 pm

2 stops25h 59m

$731

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Mon 11/2

7:00 am-11:00 am

2 stops21h 00m

Lisbon Humberto Delgado

Fri 11/13

1:00 pm-1:30 pm

2 stops31h 30m

$732

RedmondLisbon

RDM - LIS

RDMLIS

Bend/Redmond

Fri 10/30

1:55 pm-10:15 am

2 stops61h 20m

Lisbon Humberto Delgado

Fri 11/6

1:00 pm-10:54 pm

2 stops41h 54m

$739

EugeneLisbon

EUG - LIS

EUGLIS

Eugene

Sun 11/1

12:25 pm-8:10 am

2 stops35h 45m

Lisbon Humberto Delgado

Thu 11/5

10:15 am-9:38 pm

2 stops19h 23m

$743

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sat 10/31

5:45 pm-8:00 am

2 stops32h 15m

Lisbon Humberto Delgado

Mon 11/9

12:20 pm-4:49 pm

2 stops35h 29m

$752

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sun 10/18

1:15 pm-2:55 pm

2 stops18h 40m

Lisbon Humberto Delgado

Mon 11/2

12:20 pm-4:49 pm

2 stops35h 29m

$752

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Wed 11/4

1:43 pm-5:30 pm

2 stops20h 47m

Lisbon Humberto Delgado

Mon 11/9

12:20 pm-4:49 pm

2 stops35h 29m

$752

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Mon 11/2

1:15 pm-3:10 pm

2 stops18h 55m

Lisbon Humberto Delgado

Mon 11/9

12:20 pm-4:49 pm

2 stops35h 29m

$752

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/8

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Oregon to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Oregon with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Oregon to Portugal

How far ahead should I book a flight from Oregon to Portugal?

The price you pay for your flight from Oregon to Portugal may vary depending on when you book. For the best chance of a lower fare, look to book 87 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Oregon to Portugal?

Currently, March is the cheapest month in which you can book a flight from Oregon to Portugal (average of $360). Flying from Oregon to Portugal in June is currently the most expensive (average of $800). 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.

Related info for your journey

Find useful and relevant information for your journey from Oregon to Portugal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Oregon to Portugal?

    For as low as $727, United Airlines can have you in Portugal from Oregon in 21h 20m. There are 5150 mi between Oregon and Portugal. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Oregon to Portugal one-way?

    The cheapest airlines for a one-way flight from Oregon to Portugal are Icelandair ($312), United Airlines ($328), and Delta ($360).

  • Can I find deals for flights from Oregon to Portugal that include hotel bookings?

    Yes. In addition to deals on Oregon to Portugal flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Oregon to Portugal?

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

  • Can I find deals for business class flights from Oregon to Portugal?

    Yes. Cheapflights offers flight deals from Oregon to Portugal 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 Oregon to Portugal?

    Currently, March is the cheapest month in which you can book a flight from Oregon to Portugal (average of $360). Flying from Oregon to Portugal in June is currently the most expensive (average of $800). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Oregon to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Oregon to Portugal

Discover the top 8 airlines that operate flights from Oregon to Portugal. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$360Average$490FlexibilityNo cancel feeOn-time76%
KLMCheapest$492Average$826FlexibilityNo cancel feeOn-time75%
DeltaCheapest$494Average$952FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$501Average$680FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$508Average$1,022FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$510Average$992FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$524Average$620FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$577Average$699FlexibilityNo cancel feeOn-time67%

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