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Portugal

$324+ 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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LIS
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
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 July 30, 2025.

Round-trip from

$599
(United Airlines)

One-way from

$324
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$1,037
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. 16% potential increase in price ($206 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($37 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 30, 2025.

This United Airlines deal was found by Cheapflights users on 7/29. 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 10/288:25 amBOI - LIS
2 stops18h 55mUnited Airlines
Tue 11/115:00 amLIS - BOI
2 stops24h 45mUnited Airlines
Deal found 7/29$599
This Finnair deal was found by Cheapflights users on 7/29. 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.
Wed 10/297:00 amBOI - LIS
2 stops19h 55mMultiple Airlines
Wed 11/1211:15 amLIS - BOI
2 stops18h 12mMultiple Airlines
Deal found 7/29$602
This FlightHub deal was found by Cheapflights users on 7/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/286:20 amBOI - LIS
2 stops21h 00mAir Canada
Thu 11/1310:55 amLIS - BOI
2 stops30h 03mAir Canada
Deal found 7/29$605
This Iberia deal was found by Cheapflights users on 7/29. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/287:00 amBOI - LIS
2 stops27h 05mIberia
Wed 11/126:30 amLIS - BOI
2 stops22h 57mIberia
Deal found 7/29$609
This Air France deal was found by Cheapflights users on 7/29. 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.
Sun 10/194:46 pmBOI - LIS
2 stops18h 04mAir France
Mon 11/36:30 pmLIS - BOI
2 stops28h 34mAir France
Deal found 7/29$628
This Delta deal was found by Cheapflights users on 7/29. 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.
Thu 10/306:00 amBOI - LIS
2 stops20h 00mDelta
Thu 11/1311:15 amLIS - BOI
2 stops18h 28mDelta
Deal found 7/29$661
This Scandinavian Airlines deal was found by Cheapflights users on 7/29. 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.
Wed 10/294:00 pmBOI - LIS
3 stops24h 10mScandinavian Airlines
Wed 11/127:05 amLIS - BOI
2 stops22h 59mScandinavian Airlines
Deal found 7/29$755
This Booking.com deal was found by Cheapflights users on 7/29. 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.
Sat 8/238:46 pmBOI - LIS
2 stops17h 34mIcelandair
Thu 8/2810:20 pmLIS - BOI
2 stops48h 34mIcelandair
Deal found 7/29$1,003

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 July 30, 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

Tue 10/28

8:25 am-9:20 am

2 stops18h 55m

Lisbon Humberto Delgado

Tue 11/11

5:00 am-10:45 pm

2 stops24h 45m

$599

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Wed 10/29

7:00 am-8:55 am

2 stops19h 55m

Lisbon Humberto Delgado

Wed 11/12

11:15 am-10:27 pm

2 stops18h 12m

$602

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Tue 10/28

6:20 am-9:20 am

2 stops21h 00m

Lisbon Humberto Delgado

Thu 11/13

10:55 am-9:58 am

2 stops30h 03m

$605

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Tue 10/28

7:00 am-4:05 pm

2 stops27h 05m

Lisbon Humberto Delgado

Wed 11/12

6:30 am-10:27 pm

2 stops22h 57m

$609

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sun 10/19

4:46 pm-5:50 pm

2 stops18h 04m

Lisbon Humberto Delgado

Mon 11/3

6:30 pm-4:04 pm

2 stops28h 34m

$628

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Thu 10/30

6:00 am-8:00 am

2 stops20h 00m

Lisbon Humberto Delgado

Thu 11/13

11:15 am-10:43 pm

2 stops18h 28m

$661

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Wed 10/29

4:00 pm-10:10 pm

3 stops24h 10m

Lisbon Humberto Delgado

Wed 11/12

7:05 am-11:04 pm

2 stops22h 59m

$755

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sat 8/23

8:46 pm-9:20 pm

2 stops17h 34m

Lisbon Humberto Delgado

Thu 8/28

10:20 pm-3:54 pm

2 stops48h 34m

$1,003

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Tue 10/21

8:00 am-8:35 pm

3 stops29h 35m

$324

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sat 11/29

7:00 pm-10:15 am

2 stops32h 15m

$439

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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, 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 $1,129). 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 July 30, 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.

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 July 30, 2025.
Get a feel of what it's like to fly with Delta, Air France, and United 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
8.0
Very good
7,980 reviews

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.5
Good
1,465 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,896 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Scandinavian Airlines
7.3
Good
1,453 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
9,837 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 $1,129). 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 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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$609Average$1,181FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$618Average$1,091FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$621Average$1,248FlexibilityNo cancel feeOn-time71%
DeltaCheapest$654Average$1,220FlexibilityNo cancel feeOn-timeN/A

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