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$655+ Cheap flights from Boise (BOI) 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 10/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LIS
mar. 13 — mar. 201
jue. 3/13
jue. 3/20
1 adult, Economy
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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 marzo 8, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$828
(Finnair)

One-way from

$761
(United)

Popular in

June

Cheapest in

March

Average price

$788
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. 18% potential increase in price ($251 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in March 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 marzo 8, 2025.

This Booking.com deal was found by Cheapflights users on 3/6. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/271:00 pmBOI - LIS
2 stops38h 20mMultiple Airlines
lun. 11/1012:30 pmLIS - BOI
2 stops39h 46mMultiple Airlines
Deal found 3/6$655
This United deal was found by Cheapflights users on 3/7. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/237:00 pmBOI - LIS
2 stops32h 15mUnited Airlines
sáb. 12/1311:00 amLIS - BOI
2 stops53h 43mUnited Airlines
Deal found 3/7$690
This Finnair deal was found by Cheapflights users on 3/7. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/217:05 amBOI - LIS
2 stops33h 05mFinnair
mié. 4/307:20 amLIS - BOI
2 stops21h 51mFinnair
Deal found 3/7$828
This Justfly.com deal was found by Cheapflights users on 3/7. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/172:43 pmBOI - LIS
2 stops35h 37mAir Canada
dom. 6/81:10 pmLIS - BOI
2 stops35h 51mAir Canada
Deal found 3/7$1,043
This Gurufare deal was found by Cheapflights users on 3/7. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/128:30 pmBOI - LIS
2 stops41h 50mIcelandair
jue. 9/2510:20 pmLIS - BOI
2 stops55h 00mIcelandair
Deal found 3/7$1,068
This Scandinavian Airlines deal was found by Cheapflights users on 3/7. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/131:00 pmBOI - LIS
3 stops26h 05mScandinavian Airlines
mié. 10/227:15 amLIS - BOI
2 stops20h 49mScandinavian Airlines
Deal found 3/7$1,109

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 marzo 8, 2025.

Fly from

Boise

Fly to

Portugal

Route

Depart

Return

Price

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

lun. 4/21

7:05 am-11:10 pm

2 stops33h 05m

Lisbon Humberto Delgado

mié. 4/30

7:20 am-10:11 pm

2 stops21h 51m

$828

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

mié. 4/9

5:00 am-3:25 pm

2 stops27h 25m

Lisbon Humberto Delgado

mié. 4/16

11:25 am-11:24 am

2 stops30h 59m

$833

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

sáb. 5/17

2:43 pm-9:20 am

2 stops35h 37m

Lisbon Humberto Delgado

dom. 6/8

1:10 pm-6:01 pm

2 stops35h 51m

$1,043

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

sáb. 5/17

8:30 am-11:30 am

3 stops20h 00m

Lisbon Humberto Delgado

dom. 6/8

12:50 pm-9:46 am

2 stops27h 56m

$1,287

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

vie. 3/14

5:25 pm-10:00 am

2 stops34h 35m

$761

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/7

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 $1,224). 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 marzo 8, 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 marzo 8, 2025.
Finnair
7.6
Good
1,271 reviews

Entertainment

6.9

Overall

7.6

Food

6.7

Boarding

7.7

Comfort

7.5

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
1,271 reviews
Finnair
7.6
Good
1,271 reviews

Entertainment

6.9

Overall

7.6

Food

6.7

Boarding

7.7

Comfort

7.5

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
8,649 reviews
Finnair
7.6
Good
1,271 reviews

Entertainment

6.9

Overall

7.6

Food

6.7

Boarding

7.7

Comfort

7.5

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
8,851 reviews
Finnair
7.6
Good
1,271 reviews

Entertainment

6.9

Overall

7.6

Food

6.7

Boarding

7.7

Comfort

7.5

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.

  • 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 $1,224). 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 6 airlines flying from Boise to Portugal

Discover the top 6 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 marzo 8, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$621Average$1,089FlexibilityNo cancel feeOn-time71%
Air FranceCheapest$654Average$1,042FlexibilityNo cancel feeOn-time77%
DeltaCheapest$654Average$1,194FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$701Average$1,191FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$726Average$1,165FlexibilityNo cancel feeOn-time69%
KLMCheapest$750Average$1,013FlexibilityNo cancel feeOn-time75%
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