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Lisbon

$335+ Cheap flights from Idaho to Lisbon (LIS)

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
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Idaho to Lisbon

Cheapest flights from Idaho to Lisbon
Explore the most affordable flight options available from Idaho to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This Delta deal was found by Cheapflights users on 12/16. 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 12/256:19 pmBOI - LIS
2 stops54h 41mDelta
Mon 1/1211:25 amLIS - BOI
2 stops35h 52mDelta
Deal found 12/16$629
This Delta deal was found by Cheapflights users on 12/16. 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 12/251:55 pmBOI - LIS
2 stops59h 05mDelta
Sun 1/115:00 amLIS - BOI
2 stops39h 00mDelta
Deal found 12/16$742
This United Airlines deal was found by Cheapflights users on 12/16. 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 12/235:00 amBOI - LIS
2 stops46h 15mUnited Airlines
Sun 1/1111:20 amLIS - BOI
2 stops41h 03mUnited Airlines
Deal found 12/16$749
This United Airlines deal was found by Cheapflights users on 12/16. 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.
Wed 12/248:20 amBOI - LIS
2 stops18h 55mUnited Airlines
Sun 1/1111:20 amLIS - BOI
2 stops41h 03mUnited Airlines
Deal found 12/16$811
This Delta deal was found by Cheapflights users on 12/16. 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 12/251:55 pmBOI - LIS
2 stops59h 05mDelta
Fri 1/95:30 amLIS - BOI
2 stops19h 58mDelta
Deal found 12/16$812
This United Airlines deal was found by Cheapflights users on 12/16. 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 12/235:00 amBOI - LIS
2 stops46h 15mUnited Airlines
Wed 1/77:50 pmLIS - BOI
2 stops34h 07mUnited Airlines
Deal found 12/16$926
This United Airlines deal was found by Cheapflights users on 12/16. 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 12/235:12 pmBOI - LIS
2 stops34h 03mUnited Airlines
Fri 1/95:00 amLIS - BOI
2 stops39h 35mUnited Airlines
Deal found 12/16$950
This United Airlines deal was found by Cheapflights users on 12/16. 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 12/235:12 pmBOI - LIS
2 stops34h 03mUnited Airlines
Thu 1/86:10 amLIS - BOI
2 stops34h 56mUnited Airlines
Deal found 12/16$952
This Delta deal was found by Cheapflights users on 12/16. 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 12/256:19 pmBOI - LIS
2 stops54h 41mDelta
Sat 1/105:00 amLIS - BOI
2 stops20h 28mDelta
Deal found 12/16$962
This United Airlines deal was found by Cheapflights users on 12/16. 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.
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
This United Airlines deal was found by Cheapflights users on 12/16. 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.
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
This United Airlines deal was found by Cheapflights users on 12/16. 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.
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

Find flight deals from Idaho to Lisbon

Keep the following information in mind while searching for Idaho to Lisbon flight deals. Data was last updated December 18, 2025.

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.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Lisbon Humberto Delgado flights.
Search Deals
From Idaho to Lisbon Humberto Delgado
Search Deals
One-way flight from Idaho to Lisbon Humberto Delgado
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

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho to Lisbon 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 December 18, 2025.
Use the filters below to find and compare flights from Idaho to Lisbon that are best for you.

Fly from

Idaho

Fly to

Lisbon

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

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

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

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-9:22 pm

2 stops42h 02m

$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

SpokaneLisbon

GEG - LIS

GEGLIS

Spokane

Tue 1/27

5:00 am-8:10 am

2 stops19h 10m

Lisbon Humberto Delgado

Wed 2/4

11:20 am-9:22 pm

2 stops42h 02m

$494

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sun 2/1

7:45 am-9:20 am

2 stops42h 35m

Lisbon Humberto Delgado

Sun 2/8

10:50 am-9:23 pm

2 stops41h 33m

$497

SpokaneLisbon

GEG - LIS

GEGLIS

Spokane

Sun 2/1

5:00 am-9:20 am

2 stops44h 20m

Lisbon Humberto Delgado

Sun 2/8

10:50 am-7:16 pm

2 stops40h 26m

$497

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 32 results
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Best time to book a flight from Idaho to Lisbon

Have a flexible travel schedule? Discover the best time to fly to Lisbon 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 Lisbon

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

Currently, February is the cheapest month in which you can book a flight from Idaho to Lisbon (average of $546). Flying from Idaho to Lisbon 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 LIS?

Find hourly flight availability from Idaho to Lisbon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 23% on flights from Idaho to Lisbon by exploring options for tickets in the afternoon.

Related info for your journey

Find useful and relevant information for your journey from Idaho to Lisbon. 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 into for flights to Lisbon from Idaho?

    Lisbon Humberto Delgado (LIS), located 4.2 mi from the city center, is the airport you fly into when you book flights from Idaho to Lisbon.

  • How long is the flight from Idaho to Lisbon?

    For as low as $486, Air Canada can have you in Lisbon from Idaho in 19h. Airlines will cover a distance of 5150 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Idaho to Lisbon?

    The most popular route from Idaho to Lisbon is Boise Air Term. Gowen Fld - Lisbon Humberto Delgado. You may also consider Spokane - Lisbon Humberto Delgado or Jackson Hole - Lisbon Humberto Delgado.

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

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

  • How can I find direct flights from Idaho to Lisbon?

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

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

    Yes. Cheapflights offers flight deals from Idaho to Lisbon 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 Lisbon?

    Currently, February is the cheapest month in which you can book a flight from Idaho to Lisbon (average of $546). Flying from Idaho to Lisbon 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

Traveling to a place near Lisbon?

Book flights to Lisbon if you plan to visit one of these locations
Fátima
Oeiras
Ericeira
Costa da Caparica
Torres Vedras
Beja
Nazaré
Sesimbra
Colares

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Alternative routes for Idaho to Lisbon

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Idaho to Lisbon

Discover the top 4 airlines that operate flights from Idaho to Lisbon. 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$601Average$947FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$602Average$1,181FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$621Average$1,248FlexibilityNo cancel feeOn-time71%
DeltaCheapest$654Average$1,304FlexibilityNo cancel feeOn-timeN/A

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