How long is the flight from Idaho to Portugal?

For as low as $486, Air Canada can have you in Portugal from Idaho in 19h. Airlines will cover a distance of 5150 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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.

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).

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

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

How can I find direct flights from Idaho to Portugal?

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

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

Yes. Cheapflights offers flight deals from Idaho 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.

$335+ Flights from Idaho to Portugal

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Cheap flight deals from Idaho to Portugal

Cheapest flights from Idaho to Portugal
Explore the most affordable flight options available from Idaho to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 17, 2025.

Thu 12/256:19 pmBOI - LIS

2 stops54h 41mDelta

Mon 1/1211:25 amLIS - BOI

2 stops35h 52mDelta

Deal found 12/16

$629

Thu 12/251:55 pmBOI - LIS

2 stops59h 05mDelta

Sun 1/115:00 amLIS - BOI

2 stops39h 00mDelta

Deal found 12/16

$742

Tue 12/235:00 amBOI - LIS

2 stops46h 15mUnited Airlines

Sun 1/1111:20 amLIS - BOI

2 stops41h 03mUnited Airlines

Deal found 12/16

$749

Wed 12/248:20 amBOI - LIS

2 stops18h 55mUnited Airlines

Mon 1/1211:20 amLIS - BOI

2 stops33h 15mUnited Airlines

Deal found 12/16

$811

Thu 12/251:55 pmBOI - LIS

2 stops59h 05mDelta

Fri 1/95:30 amLIS - BOI

2 stops19h 58mDelta

Deal found 12/16

$812

Tue 12/235:00 amBOI - LIS

2 stops46h 15mUnited Airlines

Wed 1/77:50 pmLIS - BOI

2 stops34h 07mUnited Airlines

Deal found 12/16

$926

Tue 12/235:12 pmBOI - LIS

2 stops34h 03mUnited Airlines

Fri 1/95:00 amLIS - BOI

2 stops39h 35mUnited Airlines

Deal found 12/16

$950

Tue 12/235:12 pmBOI - LIS

2 stops34h 03mUnited Airlines

Thu 1/86:10 amLIS - BOI

2 stops34h 56mUnited Airlines

Deal found 12/16

$952

Thu 12/256:19 pmBOI - LIS

2 stops54h 41mDelta

Sat 1/105:00 amLIS - BOI

2 stops20h 28mDelta

Deal found 12/16

$962

Wed 12/248:20 amBOI - LIS

2 stops18h 55mUnited Airlines

Wed 1/77:50 pmLIS - BOI

2 stops34h 07mUnited Airlines

Deal found 12/16

$986

Thu 12/2512:20 pmBOI - LIS

2 stops38h 55mUnited Airlines

Wed 1/77:50 pmLIS - BOI

2 stops34h 07mUnited Airlines

Deal found 12/16

$1,009

Wed 12/248:20 amBOI - LIS

2 stops18h 55mUnited Airlines

Thu 1/86:45 pmLIS - BOI

2 stops35h 12mUnited Airlines

Deal found 12/16

$1,036

Best flights from Idaho to Portugal
Discover carefully curated flight deals from Idaho to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 17, 2025.

Tue 3/37:00 amGEG - LIS

2 stops42h 20mAir Canada

Tue 3/1011:20 amLIS - GEG

2 stops37h 31mAir Canada

Deal found 12/15

$481

Fri 1/166:10 amBOI - LIS

2 stops19h 00mUnited Airlines

Thu 1/295:00 amLIS - BOI

2 stops21h 51mUnited Airlines

Deal found 12/17

$486

Mon 1/121:20 pmGEG - FAO

2 stops36h 10mKLM

Mon 1/197:15 pmFAO - GEG

2 stops32h 39mKLM

Deal found 12/15

$489

Sat 3/214:36 pmBOI - LIS

2 stops34h 19mDelta

Tue 3/315:00 amLIS - BOI

2 stops23h 06mDelta

Deal found 12/16

$512

Tue 3/37:00 amGEG - LIS

3 stops20h 00mMultiple Airlines

Tue 3/1011:20 amLIS - GEG

2 stops31h 27mMultiple Airlines

Deal found 12/15

$618

Fri 1/166:10 amBOI - LIS

2 stops19h 00mUnited Airlines

Tue 1/2011:20 amLIS - BOI

2 stops42h 37mUnited Airlines

Deal found 12/16

$491

Fri 1/166:10 amBOI - LIS

2 stops20h 10mAir Canada

Tue 1/2011:20 amLIS - BOI

2 stops32h 19mAir Canada

Deal found 12/14

$493

Fri 1/167:00 amJAC - LIS

2 stops19h 20mUnited Airlines

Tue 1/2011:20 amLIS - JAC

2 stops32h 38mUnited Airlines

Deal found 12/14

$493

Wed 3/1811:36 pmBOI - LIS

2 stops27h 19mDelta

Tue 3/315:00 amLIS - BOI

2 stops24h 08mDelta

Deal found 12/16

$584

Wed 1/142:37 pmBOI - LIS

2 stops35h 43mUnited Airlines

Wed 1/2111:20 amLIS - BOI

2 stops39h 31mUnited Airlines

Deal found 12/15

$493

Sun 3/2211:36 pmBOI - LIS

2 stops27h 24mDelta

Tue 3/315:00 amLIS - BOI

2 stops23h 06mDelta

Deal found 12/16

$591

Wed 1/1412:24 pmGEG - LIS

2 stops36h 56mUnited Airlines

Wed 1/2111:20 amLIS - GEG

2 stops33h 26mUnited Airlines

Deal found 12/17

$493

Sun 3/2911:59 pmGEG - LIS

2 stops25h 06mMultiple Airlines

Fri 4/176:35 amLIS - GEG

2 stops21h 59mMultiple Airlines

Deal found 12/15

$668

Sat 5/22:43 pmBOI - LIS

2 stops37h 17mAir Canada

Tue 5/1211:25 amLIS - BOI

2 stops42h 41mAir Canada

Deal found 12/16

$652

Fri 1/167:00 amJAC - LIS

2 stops18h 10mUnited Airlines

Mon 1/1911:20 amLIS - JAC

2 stops34h 58mUnited Airlines

Deal found 12/16

$494

Sat 3/214:36 pmBOI - LIS

2 stops34h 19mDelta

Mon 3/305:00 amLIS - BOI

2 stops23h 47mDelta

Deal found 12/16

$652

Fri 1/307:00 amJAC - LIS

2 stops18h 10mUnited Airlines

Fri 2/610:55 amLIS - JAC

2 stops35h 23mUnited Airlines

Deal found 12/16

$494

Wed 5/206:09 amGEG - LIS

2 stops18h 56mMultiple Airlines

Tue 5/2611:05 amLIS - GEG

2 stops19h 17mMultiple Airlines

Deal found 12/15

$748

Tue 1/275:00 amGEG - LIS

2 stops19h 10mUnited Airlines

Wed 2/411:20 amLIS - GEG

2 stops42h 02mUnited Airlines

Deal found 12/15

$494

Fri 1/305:00 amGEG - LIS

2 stops19h 10mUnited Airlines

Tue 2/35:00 amLIS - GEG

2 stops24h 23mUnited Airlines

Deal found 12/14

$499

Thu 1/86:10 amBOI - LIS

2 stops19h 00mUnited Airlines

Fri 1/1611:20 amLIS - BOI

2 stops39h 25mUnited Airlines

Deal found 12/14

$609

Fri 1/305:36 pmJAC - LIS

1 stop35h 09mMultiple Airlines

Fri 2/69:00 amLIS - JAC

2 stops33h 08mMultiple Airlines

Deal found 12/16

$1,476

Sat 4/44:16 pmJAC - LIS

2 stops34h 04mUnited Airlines

Sun 6/281:00 pmLIS - JAC

2 stops35h 52mUnited Airlines

Deal found 12/15

$940

Mon 1/126:53 amGEG - FAO

3 stops24h 52mMultiple Airlines

Mon 1/197:15 pmFAO - GEG

3 stops27h 45mMultiple Airlines

Deal found 12/15

$2,554

Last-minute flights from Idaho to Portugal
Discover last-minute flight deals from Idaho to Portugal. Data last updated December 17, 2025 and is based on user searches.

Thu 12/256:19 pmBOI - LIS

2 stops54h 41mDelta

Mon 1/1211:25 amLIS - BOI

2 stops35h 52mDelta

Deal found 12/16

$629

Thu 1/86:10 amBOI - LIS

2 stops19h 00mUnited Airlines

Fri 1/1611:20 amLIS - BOI

2 stops39h 25mUnited Airlines

Deal found 12/14

$609

Fri 1/911:20 amBOI - LIS

2 stops20h 15mKLM

Fri 1/165:00 amLIS - BOI

2 stops20h 28mKLM

Deal found 12/14

$622

Mon 1/121:20 pmGEG - FAO

2 stops36h 10mKLM

Mon 1/197:15 pmFAO - GEG

2 stops32h 39mKLM

Deal found 12/15

$489

Wed 1/142:37 pmBOI - LIS

2 stops35h 43mUnited Airlines

Wed 1/2111:20 amLIS - BOI

2 stops39h 31mUnited Airlines

Deal found 12/15

$493

Wed 1/1412:24 pmGEG - LIS

2 stops36h 56mUnited Airlines

Wed 1/2111:20 amLIS - GEG

2 stops33h 26mUnited Airlines

Deal found 12/17

$493

Fri 1/166:10 amBOI - LIS

2 stops19h 00mUnited Airlines

Thu 1/295:00 amLIS - BOI

2 stops21h 51mUnited Airlines

Deal found 12/17

$486

Fri 1/166:10 amBOI - LIS

2 stops19h 00mUnited Airlines

Tue 1/2011:20 amLIS - BOI

2 stops42h 37mUnited Airlines

Deal found 12/16

$491

Fri 1/167:00 amJAC - LIS

2 stops19h 20mUnited Airlines

Tue 1/2011:20 amLIS - JAC

2 stops32h 38mUnited Airlines

Deal found 12/15

$493

Fri 1/167:00 amJAC - LIS

2 stops18h 10mUnited Airlines

Mon 1/1911:20 amLIS - JAC

2 stops34h 58mUnited Airlines

Deal found 12/16

$494

Tue 1/275:00 amGEG - LIS

2 stops19h 10mUnited Airlines

Wed 2/411:20 amLIS - GEG

2 stops42h 02mUnited Airlines

Deal found 12/17

$494

Fri 1/305:00 amGEG - LIS

2 stops19h 10mUnited Airlines

Tue 2/35:00 amLIS - GEG

2 stops42h 21mUnited Airlines

Deal found 12/15

$499

One-way flights from Idaho to Portugal
Search for one-way flight options from Idaho to Portugal. Find affordable one-way fares based on user searches. Data last updated December 17, 2025.

Wed 2/255:24 pmBOI - LIS

2 stops33h 51mUnited Airlines

Deal found 12/16

$335

Wed 2/255:24 pmBOI - LIS

2 stops31h 31mAir Canada

Deal found 12/17

$344

Tue 3/246:15 amBOI - LIS

2 stops21h 05mUnited Airlines

Deal found 12/16

$398

Thu 3/125:00 amBOI - LIS

2 stops20h 55mAir Canada

Deal found 12/17

$504

Sun 5/108:40 amBOI - LIS

2 stops43h 20mAir Canada

Deal found 12/14

$535

Sat 3/145:30 pmBOI - LIS

2 stops39h 35mUnited Airlines

Deal found 12/16

$539

Sat 3/147:31 pmBOI - LIS

3 stops55h 14mMultiple Airlines

Deal found 12/16

$549

Sun 6/147:02 amGEG - LIS

2 stops19h 58mMultiple Airlines

Deal found 12/15

$626

Sun 6/147:00 amGEG - LIS

3 stops18h 20mAir Canada

Deal found 12/15

$882

Wed 2/251:25 pmBOI - LIS

1 stop15h 05mMultiple Airlines

Deal found 12/16

$974

Find flight deals from Idaho to Portugal

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$481 (Expedia)
One-way from	$335 (United Airlines)
Popular in	December
Cheapest in	November
Average price	$2,678

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 Idaho to Portugal

Search Deals

One-way flight from Idaho to Portugal

Search Deals

Highest demand for flights based on searches. 20% potential increase in price ($297 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 14% potential price decrease ($142 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

SpokaneLisbon

GEG - LIS

GEGLIS

Spokane

Tue 3/3

7:00 am-9:20 am

2 stops42h 20m

Lisbon Humberto Delgado

Tue 3/10

11:20 am-5:51 pm

2 stops37h 31m

$481

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Fri 1/16

6:10 am-8:10 am

2 stops19h 00m

Lisbon Humberto Delgado

Thu 1/29

5:00 am-7:51 pm

2 stops21h 51m

$486

SpokaneFaro

GEG - FAO

GEGFAO

Spokane

Mon 1/12

1:20 pm-9:30 am

2 stops36h 10m

Faro

Mon 1/19

7:15 pm-7:54 pm

2 stops32h 39m

$489

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Fri 1/16

6:10 am-8:10 am

2 stops19h 00m

Lisbon Humberto Delgado

Tue 1/20

11:20 am-10:57 pm

2 stops42h 37m

$491

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Fri 1/16

6:10 am-9:20 am

2 stops20h 10m

Lisbon Humberto Delgado

Tue 1/20

11:20 am-12:39 pm

2 stops32h 19m

$493

JacksonLisbon

JAC - LIS

JACLIS

Jackson Hole

Fri 1/16

7:00 am-9:20 am

2 stops19h 20m

Lisbon Humberto Delgado

Tue 1/20

11:20 am-12:58 pm

2 stops32h 38m

$493

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Wed 1/14

2:37 pm-9:20 am

2 stops35h 43m

Lisbon Humberto Delgado

Wed 1/21

11:20 am-7:51 pm

2 stops39h 31m

$493

SpokaneLisbon

GEG - LIS

GEGLIS

Spokane

Wed 1/14

12:24 pm-9:20 am

2 stops36h 56m

Lisbon Humberto Delgado

Wed 1/21

11:20 am-12:46 pm

2 stops33h 26m

$493

JacksonLisbon

JAC - LIS

JACLIS

Jackson Hole

Fri 1/16

7:00 am-8:10 am

2 stops18h 10m

Lisbon Humberto Delgado

Mon 1/19

11:20 am-3:18 pm

2 stops34h 58m

$494

JacksonLisbon

JAC - LIS

JACLIS

Jackson Hole

Fri 1/30

7:00 am-8:10 am

2 stops18h 10m

Lisbon Humberto Delgado

Fri 2/6

10:55 am-3:18 pm

2 stops35h 23m

$494

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 34 results

Best time to book a flight from Idaho to Portugal

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

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

Currently, February is the cheapest month in which you can book a flight from Idaho to Portugal (average of $546). Flying from Idaho to Portugal in June is currently the most expensive (average of $1,028). 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 ID to PT?

One of the essential ways to save on airfare from Idaho to Portugal is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the afternoon could potentially save you up to 11% on airfare.

Related info for your journey

How long is the flight from Idaho to Portugal?
For as low as $486, Air Canada can have you in Portugal from Idaho in 19h. Airlines will cover a distance of 5150 mi. Both multi-stop and nonstop flights can be found to your destination and back.
Can I find deals for flights from Idaho to Portugal that include hotel bookings?
Yes. In addition to deals on Idaho to Portugal flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Idaho to Portugal?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho to Portugal.
Can I find deals for business class flights from Idaho to Portugal?
Yes. Cheapflights offers flight deals from Idaho 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 Idaho to Portugal?
Currently, February is the cheapest month in which you can book a flight from Idaho to Portugal (average of $546). Flying from Idaho to Portugal in June is currently the most expensive (average of $1,028). 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Idaho to Portugal

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Complete your trip

Portugal car rentals

Madeira car rentals

Azores car rentals

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Porto Airport car rentals

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Funchal car rentals

Ponta Delgada car rentals

Faro car rentals

Top 4 airlines flying from Idaho to Portugal

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$601	Average$1,061	FlexibilityNo cancel fee	On-time69%
Air Canada	Cheapest$602	Average$1,181	FlexibilityNo cancel fee	On-time67%
American Airlines	Cheapest$621	Average$1,248	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$654	Average$1,083	FlexibilityNo cancel fee	On-timeN/A

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$335+ Cheap flights from Idaho 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.

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Cheap flight deals from Idaho to Portugal

Cheapest flights from Idaho to PortugalExplore the most affordable flight options available from Idaho to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 17, 2025.

Explore the most affordable flight options available from Idaho to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 17, 2025.

Find flight deals from Idaho to Portugal

Keep the following information in mind while searching for Idaho to Portugal flight deals. Data was last updated December 17, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Idaho to Portugal that are best for you.

Best time to book a flight from Idaho to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Idaho with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Idaho to Portugal

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

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

Find hourly flight availability from Idaho 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 December 17, 2025.

Related info for your journey

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

How long is the flight from Idaho to Portugal?

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

How can I find direct flights from Idaho to Portugal?

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Idaho to Portugal

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from Idaho to Portugal

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Cheapest flights from Idaho to Portugal
Explore the most affordable flight options available from Idaho to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 17, 2025.