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Lisbon

$329+ 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 2/26. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LIS
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
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 January 29, 2026.

This United Airlines deal was found by Cheapflights users on 1/27. 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 4/285:00 am
BOI
-
LIS
2 stops22h 30m
United Airlines
Tue 5/511:25 am
LIS
-
BOI
2 stops42h 20m
United Airlines
Deal found 1/27$493
This Expedia deal was found by Cheapflights users on 1/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/216:00 am
GEG
-
LIS
2 stops28h 25m
Iberia
Tue 4/288:25 am
LIS
-
GEG
2 stops44h 03m
Iberia
Deal found 1/28$495
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Fri 10/2312:30 pm
GEG
-
LIS
2 stops37h 50m
United Airlines
Fri 11/65:00 am
LIS
-
GEG
2 stops26h 38m
United Airlines
Deal found 1/27$499
This United Airlines deal was found by Cheapflights users on 1/27. 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 2/245:00 am
GEG
-
LIS
2 stops19h 10m
United Airlines
Tue 3/35:00 am
LIS
-
GEG
2 stops38h 45m
United Airlines
Deal found 1/27$500
This United Airlines deal was found by Cheapflights users on 1/28. 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 2/266:25 am
BOI
-
LIS
2 stops18h 45m
United Airlines
Thu 3/55:00 am
LIS
-
BOI
2 stops36h 06m
United Airlines
Deal found 1/28$501
This Delta deal was found by Cheapflights users on 1/26. 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.
Tue 4/1411:25 am
GEG
-
LIS
2 stops22h 25m
Delta
Tue 4/285:00 am
LIS
-
GEG
2 stops24h 40m
Delta
Deal found 1/26$501
This Delta deal was found by Cheapflights users on 1/28. 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.
Tue 4/141:52 pm
BOI
-
LIS
2 stops20h 58m
Delta
Tue 4/285:00 am
LIS
-
BOI
2 stops25h 00m
Delta
Deal found 1/28$502
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Sat 2/284:18 pm
JAC
-
LIS
2 stops24h 12m
United Airlines
Mon 3/165:00 am
LIS
-
JAC
2 stops36h 24m
United Airlines
Deal found 1/27$504
This United Airlines deal was found by Cheapflights users on 1/28. 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 2/255:00 am
BOI
-
LIS
2 stops20h 10m
United Airlines
Sun 3/111:55 am
LIS
-
BOI
2 stops42h 43m
United Airlines
Deal found 1/28$518
This KAYAK deal was found by Cheapflights users on 1/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/52:33 pm
JAC
-
LIS
2 stops25h 17m
Lufthansa
Mon 3/162:10 pm
LIS
-
JAC
2 stops36h 44m
Lufthansa
Deal found 1/28$529
This Finnair deal was found by Cheapflights users on 1/25. 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.
Fri 4/246:00 am
GEG
-
LIS
2 stops33h 25m
Multiple Airlines
Sat 5/96:55 pm
LIS
-
GEG
2 stops33h 33m
Multiple Airlines
Deal found 1/25$540
This United Airlines deal was found by Cheapflights users on 1/27. 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 3/57:00 am
JAC
-
LIS
2 stops18h 10m
United Airlines
Mon 3/166:10 am
LIS
-
JAC
2 stops39h 06m
United Airlines
Deal found 1/27$585

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$493
(United Airlines)

One-way from

$329
(United Airlines)

Popular in

December

Cheapest in

November

Average price

$945
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. 21% potential increase in price ($311 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 14% potential price decrease ($143 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 January 29, 2026.
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

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Tue 4/28

5:00 am-10:30 am

2 stops22h 30m

Lisbon Humberto Delgado

Tue 5/5

11:25 am-10:45 pm

2 stops42h 20m

$493

SpokaneLisbon

GEG - LIS

GEGLIS

Spokane

Tue 4/21

6:00 am-6:25 pm

2 stops28h 25m

Lisbon Humberto Delgado

Tue 4/28

8:25 am-8:28 pm

2 stops44h 03m

$495

SpokaneLisbon

GEG - LIS

GEGLIS

Spokane

Tue 2/24

5:00 am-8:10 am

2 stops19h 10m

Lisbon Humberto Delgado

Tue 3/3

5:00 am-11:45 am

2 stops38h 45m

$500

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Tue 4/14

10:41 am-5:50 pm

2 stops24h 09m

Lisbon Humberto Delgado

Tue 4/28

5:00 am-11:00 pm

2 stops25h 00m

$501

SpokaneLisbon

GEG - LIS

GEGLIS

Spokane

Tue 4/14

11:25 am-5:50 pm

2 stops22h 25m

Lisbon Humberto Delgado

Tue 4/28

5:00 am-9:40 pm

2 stops24h 40m

$501

JacksonLisbon

JAC - LIS

JACLIS

Jackson Hole

Sat 2/28

4:18 pm-11:30 pm

2 stops24h 12m

Lisbon Humberto Delgado

Mon 3/16

5:00 am-11:24 am

2 stops36h 24m

$504

JacksonLisbon

JAC - LIS

JACLIS

Jackson Hole

Tue 3/3

4:27 pm-11:30 pm

2 stops24h 03m

Lisbon Humberto Delgado

Mon 3/16

5:00 am-11:24 am

2 stops36h 24m

$504

JacksonLisbon

JAC - LIS

JACLIS

Jackson Hole

Wed 3/4

7:00 am-11:30 pm

2 stops33h 30m

Lisbon Humberto Delgado

Mon 3/16

5:00 am-11:24 am

2 stops36h 24m

$504

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Wed 2/25

5:00 am-8:10 am

2 stops20h 10m

Lisbon Humberto Delgado

Sun 3/1

11:55 am-11:38 pm

2 stops42h 43m

$518

SpokaneLisbon

GEG - LIS

GEGLIS

Spokane

Fri 4/24

6:00 am-11:25 pm

2 stops33h 25m

Lisbon Humberto Delgado

Sat 5/9

6:55 pm-8:28 pm

2 stops33h 33m

$540

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 56 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 $484). 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.

How much does it cost to fly round-trip from Idaho to Lisbon?

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 $493, United Airlines can have you in Lisbon from Idaho in 22h 30m. 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 $484). 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
Beja
Costa da Caparica
Torres Vedras
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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$601Average$944FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$602Average$1,135FlexibilityNo cancel feeOn-time67%
DeltaCheapest$654Average$1,209FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$659Average$1,248FlexibilityNo cancel feeOn-time71%

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