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Portugal

$416+ Cheap flights from Boise (BOI) 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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LIS
dic. 3 — dic. 101
mié. 12/3
mié. 12/10
1 adult, Economy
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Find flight deals from Boise to Portugal

Cheapest flights from Boise to Portugal
Explore the most affordable flight options available from Boise to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 3, 2025.

This Delta deal was found by Cheapflights users on 11/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/211:44 amBOI - LIS
2 stops22h 46mDelta
mié. 12/105:00 amLIS - BOI
2 stops20h 51mDelta
Deal found 11/3$500
This Finnair deal was found by Cheapflights users on 11/2. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/86:44 amBOI - LIS
2 stops19h 21mMultiple Airlines
mar. 12/1611:05 amLIS - BOI
2 stops18h 20mMultiple Airlines
Deal found 11/2$510
This Finnair deal was found by Cheapflights users on 11/2. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/166:44 amBOI - LIS
2 stops19h 21mMultiple Airlines
mié. 1/144:10 pmLIS - BOI
2 stops34h 15mMultiple Airlines
Deal found 11/2$629
This Air France deal was found by Cheapflights users on 11/2. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/41:39 pmBOI - LIS
2 stops18h 31mMultiple Airlines
mar. 11/185:00 amLIS - BOI
2 stops18h 05mMultiple Airlines
Deal found 11/2$774
This Scandinavian Airlines deal was found by Cheapflights users on 11/2. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/63:54 pmBOI - LIS
2 stops41h 11mScandinavian Airlines
mié. 12/104:55 pmLIS - BOI
2 stops36h 10mScandinavian Airlines
Deal found 11/2$873
This Air Canada deal was found by Cheapflights users on 11/3. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/28:17 amBOI - LIS
3 stops18h 03mMultiple Airlines
mié. 12/1011:00 amLIS - BOI
2 stops31h 34mMultiple Airlines
Deal found 11/3$1,058
This United Airlines deal was found by Cheapflights users on 11/2. 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.
mar. 12/235:12 pmBOI - LIS
2 stops34h 03mUnited Airlines
mié. 12/315:00 amLIS - BOI
2 stops36h 01mUnited Airlines
Deal found 11/2$1,218
This United Airlines deal was found by Cheapflights users on 11/2. 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.
lun. 12/225:12 pmBOI - LIS
2 stops56h 43mUnited Airlines
jue. 1/110:55 amLIS - BOI
2 stops43h 04mUnited Airlines
Deal found 11/2$1,320

Cheap flight deals from Boise to Portugal

Keep the following information in mind while searching for Boise to Portugal flight deals. Data was last updated noviembre 3, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$499
(Finnair)

One-way from

$416
(Iberia)

Popular in

June

Cheapest in

November

Average price

$668
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Lisbon Humberto Delgado flights.
Search Deals
From Boise Air Term. Gowen Fld to Portugal
Search Deals
One-way flight from Boise Air Term. Gowen Fld to Portugal
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($247 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boise 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 noviembre 3, 2025.
Use the filters below to find and compare flights from Boise to Portugal that are best for you.

Fly from

Boise

Fly to

Portugal

Route

Depart

Return

Price

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

sáb. 1/24

7:20 am-9:05 am

2 stops18h 45m

Lisbon Humberto Delgado

lun. 2/2

4:10 pm-7:25 pm

2 stops34h 15m

$499

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

mar. 12/2

7:30 am-11:20 am

2 stops20h 50m

Lisbon Humberto Delgado

mié. 12/10

5:00 am-6:51 pm

2 stops20h 51m

$500

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

lun. 12/8

6:44 am-9:05 am

2 stops19h 21m

Lisbon Humberto Delgado

mar. 12/16

11:05 am-10:25 pm

2 stops18h 20m

$510

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

lun. 12/8

9:00 am-9:00 am

2 stops17h 00m

Lisbon Humberto Delgado

mar. 12/16

10:00 am-12:42 am

2 stops21h 42m

$510

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

mar. 3/17

7:33 am-9:15 am

2 stops19h 42m

Lisbon Humberto Delgado

mar. 3/31

11:05 am-12:30 pm

2 stops32h 25m

$621

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

mar. 12/16

6:44 am-9:05 am

2 stops19h 21m

Lisbon Humberto Delgado

mié. 1/14

4:10 pm-7:25 pm

2 stops34h 15m

$629

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

dom. 3/29

7:00 am-11:10 am

2 stops21h 10m

Lisbon Humberto Delgado

mié. 4/15

5:05 am-11:05 pm

2 stops25h 00m

$658

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

mar. 3/24

1:20 pm-2:45 pm

2 stops19h 25m

$468

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

vie. 1/2

9:50 pm-8:20 pm

2 stops39h 30m

$543

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

mar. 3/24

7:45 am-9:20 am

3 stops19h 35m

$587

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

Showing 1-10 of 11 results
1
2

Best time to book a flight from Boise to Portugal

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

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

Currently, December is the cheapest month in which you can book a flight from Boise to Portugal (average of $567). Flying from Boise to Portugal in June is currently the most expensive (average of $1,104). 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 BOI to PT?

Find hourly flight availability from Boise 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 noviembre 3, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 19% on flights from Boise to Portugal by exploring options for tickets at noon.

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 noviembre 3, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from Boise to Portugal by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,001 reviews

Entertainment

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Overall

7.9

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,001 reviews
Delta
7.9
Good
8,001 reviews

Entertainment

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Overall

7.9

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
8,997 reviews
Delta
7.9
Good
8,001 reviews

Entertainment

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Overall

7.9

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,036 reviews
Delta
7.9
Good
8,001 reviews

Entertainment

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Overall

7.9

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air Canada
7.1
Good
10,394 reviews
Delta
7.9
Good
8,001 reviews

Entertainment

7.9

Boarding

8.2

Crew

8.5

Food

7.3

Overall

7.9

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Boise 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 Boise to Portugal?

    If you book a flight to Portugal from Boise, you will be flying from Air Term. Gowen Fld, which is the city’s only airport. Boise Air Term. Gowen Fld (BOI) is located 3.3 mi from the center of Boise.

  • How long is the flight from Boise to Portugal?

    For as low as $500, Delta can have you in Portugal from Boise in 20h 50m. Airlines will cover a distance of 5150 mi.

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

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

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

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

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

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

    Currently, December is the cheapest month in which you can book a flight from Boise to Portugal (average of $567). Flying from Boise to Portugal in June is currently the most expensive (average of $1,104). 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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Alternative routes for Boise to Portugal

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Top 4 airlines flying from Boise to Portugal

Discover the top 4 airlines that operate flights from Boise 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 noviembre 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$601Average$1,062FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$602Average$1,181FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$621Average$1,248FlexibilityNo cancel feeOn-time71%
DeltaCheapest$654Average$1,045FlexibilityNo cancel feeOn-timeN/A

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