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$564+ Cheap flights from Eugene (EUG) to Portugal

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
EUG — LIS
Oct 14 — Oct 211
Tue 10/14
Tue 10/21
1 adult, Economy
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Cheap flight deals from Eugene to Portugal

Keep the following information in mind while searching for Eugene to Portugal flight deals. Data was last updated September 14, 2025.

Round-trip from

$564
(United Airlines)

Popular in

March

Cheapest in

October

Average price

$1,182
From Eugene to Portugal
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($31 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Eugene to Portugal

Cheapest flights from Eugene to Portugal
Explore the most affordable flight options available from Eugene to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 14, 2025.

This United Airlines deal was found by Cheapflights users on 9/12. 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.
Thu 10/305:00 amEUG - LIS
2 stops22h 15mUnited Airlines
Mon 11/105:00 amLIS - EUG
2 stops20h 50mUnited Airlines
Deal found 9/12$673
This Kiwi.com deal was found by Cheapflights users on 9/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/167:00 amEUG - LIS
1 stop20h 45mMultiple Airlines
Thu 9/184:20 pmLIS - EUG
2 stops39h 38mMultiple Airlines
Deal found 9/12$1,626
This United Airlines deal was found by Cheapflights users on 9/12. 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 9/166:00 amEUG - LIS
2 stops19h 20mUnited Airlines
Thu 9/1812:55 pmLIS - EUG
3 stops55h 17mUnited Airlines
Deal found 9/12$3,945

Cheapflights Fare Finder

 
Customize your flight search to find flights from Eugene 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 September 14, 2025.
Use the filters below to find and compare flights from Eugene to Portugal that are best for you.

Fly from

Eugene

Fly to

Portugal

Route

Depart

Return

Price

EugenePorto

EUG - OPO

EUGOPO

Eugene

Mon 3/2

5:00 am-9:30 am

2 stops20h 30m

Porto

Thu 3/12

6:00 am-10:54 pm

2 stops23h 54m

$564

EugenePorto

EUG - OPO

EUGOPO

Eugene

Wed 3/4

5:00 am-9:30 am

2 stops20h 30m

Porto

Fri 3/13

6:00 am-10:54 pm

2 stops23h 54m

$564

EugenePorto

EUG - OPO

EUGOPO

Eugene

Mon 3/2

5:00 am-9:30 am

2 stops20h 30m

Porto

Fri 3/13

6:00 am-10:54 pm

2 stops23h 54m

$564

EugenePorto

EUG - OPO

EUGOPO

Eugene

Mon 3/2

5:00 am-9:30 am

2 stops20h 30m

Porto

Tue 3/10

6:00 am-9:38 pm

2 stops22h 38m

$564

EugenePorto

EUG - OPO

EUGOPO

Eugene

Wed 3/4

5:00 am-9:30 am

2 stops20h 30m

Porto

Tue 3/10

6:00 am-9:38 pm

2 stops22h 38m

$564

EugenePorto

EUG - OPO

EUGOPO

Eugene

Tue 3/3

5:00 am-9:30 am

2 stops20h 30m

Porto

Fri 3/13

6:00 am-10:54 pm

2 stops23h 54m

$564

EugeneLisbon

EUG - LIS

EUGLIS

Eugene

Mon 3/2

6:00 am-10:15 am

2 stops20h 15m

Lisbon Humberto Delgado

Tue 3/10

5:00 am-10:54 pm

2 stops24h 54m

$573

EugeneLisbon

EUG - LIS

EUGLIS

Eugene

Wed 3/4

5:00 am-8:10 am

2 stops19h 10m

Lisbon Humberto Delgado

Thu 3/12

5:00 am-10:54 pm

2 stops24h 54m

$573

EugeneLisbon

EUG - LIS

EUGLIS

Eugene

Tue 3/3

5:00 am-8:10 am

2 stops19h 10m

Lisbon Humberto Delgado

Tue 3/10

5:00 am-10:54 pm

2 stops24h 54m

$573

EugeneLisbon

EUG - LIS

EUGLIS

Eugene

Mon 3/2

5:00 am-10:15 am

2 stops21h 15m

Lisbon Humberto Delgado

Thu 3/12

5:00 am-10:54 pm

2 stops24h 54m

$573

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

Showing 1-10 of 22 results
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Best time to book a flight from Eugene to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Eugene 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 Eugene to Portugal

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

Currently, January is the cheapest month in which you can book a flight from Eugene to Portugal (average of $612). Flying from Eugene to Portugal in June is currently the most expensive (average of $1,127). 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.

What is the cheapest time of day to fly from EUG to PT?

Find hourly flight availability from Eugene to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 14, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Eugene to Portugal as you normally would.

Reviews of airlines servicing Portugal

Get insights into the airlines that provide service to Portugal. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portugal. Reviews last updated September 14, 2025.
Peruse reviews from past customers who have flown with United Airlines and American Airlines from Eugene to Portugal to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,931 reviews

Boarding

7.7

Food

6.6

Overall

7.4

Crew

8.1

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,931 reviews
United Airlines
7.4
Good
8,931 reviews

Boarding

7.7

Food

6.6

Overall

7.4

Crew

8.1

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,931 reviews

Boarding

7.7

Food

6.6

Overall

7.4

Crew

8.1

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

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

  • What airport do you fly from for flights from Eugene to Portugal?

    Eugene (EUG) is the airport you will fly out of if you book a flight from Eugene to Portugal. It is only a 7.8 mi journey to Eugene (EUG) from Eugene’s city center.

  • How long is the flight from Eugene to Portugal?

    Airlines like United Airlines fly from Eugene to Portugal in about 20h 30m. The time it takes to get you to your destination can typically vary by up to . The distance from Eugene to Portugal is about 5276 mi.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Eugene to Portugal (average of $612). Flying from Eugene to Portugal in June is currently the most expensive (average of $1,127). 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

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Top 2 airlines flying from Eugene to Portugal

Discover the top 2 airlines that operate flights from Eugene 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 September 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$647Average$1,291FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$744Average$1,100FlexibilityNo cancel feeOn-time69%

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