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$409+ 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 3/23. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LIS
Feb 11 — Feb 181
Tue 2/11
Tue 2/18
1 adult, Economy
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Cheap flight deals from Boise to Portugal

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Portugal (PT0). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 6, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$701
(Justfly.com)

One-way from

$409
(Kiwi.com)

Popular in

May

Cheapest in

February

Average price

$751
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Lisbon Humberto Delgado flight deals.
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Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Lisbon Humberto Delgado flights.
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From Boise Air Term. Gowen Fld to Portugal
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One-way flight from Boise Air Term. Gowen Fld to Portugal
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Highest demand for flights based on searches. 15% potential increase in price ($200 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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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 February 6, 2025.

This Justfly.com deal was found by Cheapflights users on 2/6. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/2412:50 pmBOI - LIS
2 stops38h 30mAir Canada
Sun 3/3011:25 amLIS - BOI
2 stops53h 24mAir Canada
Deal found 2/6$701
This United Airlines deal was found by Cheapflights users on 2/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/246:56 pmBOI - LIS
2 stops32h 24mUnited Airlines
Sun 3/3011:25 amLIS - BOI
3 stops59h 56mUnited Airlines
Deal found 2/6$708
This Ovago deal was found by Cheapflights users on 2/5. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/267:15 amBOI - LIS
2 stops42h 40mScandinavian Airlines
Fri 3/77:10 pmLIS - BOI
2 stops34h 11mScandinavian Airlines
Deal found 2/5$759
This Air France deal was found by Cheapflights users on 2/5. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/175:00 pmBOI - LIS
2 stops17h 55mAir France
Sat 5/249:45 amLIS - BOI
2 stops20h 37mAir France
Deal found 2/5$976
This Air Canada deal was found by Cheapflights users on 2/5. 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.
Sat 5/1710:20 amBOI - LIS
3 stops17h 50mMultiple Airlines
Sat 5/2412:50 pmLIS - BOI
2 stops30h 09mMultiple Airlines
Deal found 2/5$996
This Finnair deal was found by Cheapflights users on 2/5. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/2211:46 amBOI - LIS
2 stops28h 14mFinnair
Tue 7/86:35 amLIS - BOI
2 stops21h 28mFinnair
Deal found 2/5$1,204
This American Airlines deal was found by Cheapflights users on 2/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/46:55 amBOI - LIS
2 stops19h 10mAmerican Airlines
Fri 9/511:05 amLIS - BOI
2 stops19h 31mAmerican Airlines
Deal found 2/5$1,238

Find flights from Boise to Portugal within your budget

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 February 6, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Mon 3/24

12:50 pm-9:20 am

2 stops38h 30m

Lisbon Humberto Delgado

Sun 3/30

11:25 am-9:49 am

2 stops53h 24m

$701

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Mon 3/24

6:56 pm-9:20 am

2 stops32h 24m

Lisbon Humberto Delgado

Sun 3/30

11:25 am-4:21 pm

3 stops59h 56m

$708

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Wed 2/26

7:15 am-8:55 am

2 stops42h 40m

Lisbon Humberto Delgado

Fri 3/7

7:10 pm-10:21 pm

2 stops34h 11m

$759

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sat 5/17

5:00 pm-5:55 pm

2 stops17h 55m

Lisbon Humberto Delgado

Sat 5/24

9:45 am-11:22 pm

2 stops20h 37m

$976

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sat 5/17

10:20 am-11:10 am

3 stops17h 50m

Lisbon Humberto Delgado

Sat 5/24

12:50 pm-11:59 am

2 stops30h 09m

$996

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sun 6/22

11:46 am-11:00 pm

2 stops28h 14m

Lisbon Humberto Delgado

Tue 7/8

6:35 am-9:03 pm

2 stops21h 28m

$1,204

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sun 3/23

1:12 pm-10:45 pm

2 stops27h 33m

$409

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Tue 7/1

11:46 am-11:00 pm

2 stops28h 14m

$507

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Fri 3/14

6:00 am-10:00 am

2 stops46h 00m

$551

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sun 6/29

5:22 pm-9:20 am

2 stops32h 58m

$557

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/5

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.

Travel insights for flights from Boise to Portugal

Get recent, data-driven insights about flights from Boise to Portugal including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from Boise to Portugal (average of $612). Flying from Boise to Portugal in June is currently the most expensive (average of $1,244). 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 February 6, 2025.

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

Rainfall in Portugal by month

Plan your trip to Portugal by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portugal ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Portugal when rainfall is around 0.2 in.

Temperature in Portugal by month

Plan your trip to Portugal by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portugal, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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 February 6, 2025.
Finnair
7.6
Good
1,284 reviews

Boarding

7.7

Comfort

7.5

Food

6.7

Entertainment

6.9

Overall

7.6

Crew

8.1

Reviews

1 / 20

2.0
Mediocre

Rowland,Dec 2024

HEL - HKG

Finnair, a large European airline, have a very poor boarding practice whereby they collect every passenger waiting at the gate into an even smaller closed in area after checking passports (again) and boarding cards - then simply open the boarding causing a crowd crush as ALL passengers attempt to board all at once. Surely a more controllable method these days is to board via seat row numbers?

Finnair
7.6
Good
1,284 reviews
Finnair
7.6
Good
1,284 reviews

Boarding

7.7

Comfort

7.5

Food

6.7

Entertainment

6.9

Overall

7.6

Crew

8.1

Reviews

1 / 20

2.0
Mediocre

Rowland,Dec 2024

HEL - HKG

Finnair, a large European airline, have a very poor boarding practice whereby they collect every passenger waiting at the gate into an even smaller closed in area after checking passports (again) and boarding cards - then simply open the boarding causing a crowd crush as ALL passengers attempt to board all at once. Surely a more controllable method these days is to board via seat row numbers?

Air France
7.4
Good
1,468 reviews
Finnair
7.6
Good
1,284 reviews

Boarding

7.7

Comfort

7.5

Food

6.7

Entertainment

6.9

Overall

7.6

Crew

8.1

Reviews

1 / 20

2.0
Mediocre

Rowland,Dec 2024

HEL - HKG

Finnair, a large European airline, have a very poor boarding practice whereby they collect every passenger waiting at the gate into an even smaller closed in area after checking passports (again) and boarding cards - then simply open the boarding causing a crowd crush as ALL passengers attempt to board all at once. Surely a more controllable method these days is to board via seat row numbers?

United Airlines
7.4
Good
8,882 reviews
Finnair
7.6
Good
1,284 reviews

Boarding

7.7

Comfort

7.5

Food

6.7

Entertainment

6.9

Overall

7.6

Crew

8.1

Reviews

1 / 20

2.0
Mediocre

Rowland,Dec 2024

HEL - HKG

Finnair, a large European airline, have a very poor boarding practice whereby they collect every passenger waiting at the gate into an even smaller closed in area after checking passports (again) and boarding cards - then simply open the boarding causing a crowd crush as ALL passengers attempt to board all at once. Surely a more controllable method these days is to board via seat row numbers?

Scandinavian Airlines
7.3
Good
1,322 reviews
Finnair
7.6
Good
1,284 reviews

Boarding

7.7

Comfort

7.5

Food

6.7

Entertainment

6.9

Overall

7.6

Crew

8.1

Reviews

1 / 20

2.0
Mediocre

Rowland,Dec 2024

HEL - HKG

Finnair, a large European airline, have a very poor boarding practice whereby they collect every passenger waiting at the gate into an even smaller closed in area after checking passports (again) and boarding cards - then simply open the boarding causing a crowd crush as ALL passengers attempt to board all at once. Surely a more controllable method these days is to board via seat row numbers?

Air Canada
7.0
Good
8,680 reviews
Finnair
7.6
Good
1,284 reviews

Boarding

7.7

Comfort

7.5

Food

6.7

Entertainment

6.9

Overall

7.6

Crew

8.1

Reviews

1 / 20

2.0
Mediocre

Rowland,Dec 2024

HEL - HKG

Finnair, a large European airline, have a very poor boarding practice whereby they collect every passenger waiting at the gate into an even smaller closed in area after checking passports (again) and boarding cards - then simply open the boarding causing a crowd crush as ALL passengers attempt to board all at once. Surely a more controllable method these days is to board via seat row numbers?

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.

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

    For one-way options, check prices for Finnair. According to our data, you can fly for as low as $507. Users have also found prices from $551 and $557 on United Airlines and Air Canada, respectively.

  • 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, January is the cheapest month in which you can book a flight from Boise to Portugal (average of $612). Flying from Boise to Portugal in June is currently the most expensive (average of $1,244). 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

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Boise to Portugal

Discover the top 5 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 February 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$621Average$1,352FlexibilityNo cancel feeOn-time71%
Air FranceCheapest$654Average$1,042FlexibilityNo cancel feeOn-time77%
DeltaCheapest$654Average$1,096FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$709Average$1,214FlexibilityNo cancel feeOn-time69%
KLMCheapest$750Average$1,101FlexibilityNo cancel feeOn-time75%
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