HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Lisbon

$328+ Cheap flights from Boise (BOI) 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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — LIS
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Boise to Lisbon with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Boise Air Term. Gowen Fld to Lisbon Humberto Delgado are usually found in November or February, booked 46 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

Cheap flight deals from Boise to Lisbon

Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to Lisbon (LIS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$505
(FlightHub)

One-way from

$328
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$1,159
From Boise Air Term. Gowen Fld to Lisbon Humberto Delgado
Search Deals
One-way flight from Boise Air Term. Gowen Fld to Lisbon Humberto Delgado
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($214 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Boise to Lisbon

Cheapest flights from Boise to Lisbon
Explore the most affordable flight options available from Boise to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This FlightHub deal was found by Cheapflights users on 9/10. 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.
Sat 12/63:54 pmBOI - LIS
2 stops34h 01mScandinavian Airlines
Wed 12/107:05 amLIS - BOI
2 stops22h 31mScandinavian Airlines
Deal found 9/10$505
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Sun 10/198:20 amBOI - LIS
2 stops18h 00mUnited Airlines
Mon 11/311:20 amLIS - BOI
2 stops35h 43mUnited Airlines
Deal found 9/11$605
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Mon 10/209:45 amBOI - LIS
2 stops16h 35mUnited Airlines
Thu 10/305:00 amLIS - BOI
2 stops34h 58mUnited Airlines
Deal found 9/10$617
This Finnair deal was found by Cheapflights users on 9/10. 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.
Tue 12/166:44 amBOI - LIS
2 stops19h 31mMultiple Airlines
Wed 1/144:10 pmLIS - BOI
2 stops36h 08mMultiple Airlines
Deal found 9/10$619
This Finnair deal was found by Cheapflights users on 9/11. 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.
Sun 10/197:00 amBOI - LIS
2 stops33h 05mFinnair
Mon 11/34:10 pmLIS - BOI
2 stops37h 22mFinnair
Deal found 9/11$621
This FlightHub deal was found by Cheapflights users on 9/10. 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.
Sat 10/184:00 pmBOI - LIS
2 stops34h 00mScandinavian Airlines
Wed 10/294:55 pmLIS - BOI
2 stops35h 57mScandinavian Airlines
Deal found 9/10$625
This United Airlines deal was found by Cheapflights users on 9/10. 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 10/142:39 pmBOI - LIS
2 stops24h 11mUnited Airlines
Thu 10/305:00 amLIS - BOI
2 stops34h 58mUnited Airlines
Deal found 9/10$640
This United Airlines deal was found by Cheapflights users on 9/10. 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 10/142:39 pmBOI - LIS
2 stops24h 11mUnited Airlines
Wed 10/2911:55 amLIS - BOI
3 stops31h 49mUnited Airlines
Deal found 9/10$645
This United Airlines deal was found by Cheapflights users on 9/10. 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 12/166:20 amBOI - LIS
2 stops18h 50mUnited Airlines
Wed 1/1411:20 amLIS - BOI
2 stops41h 03mUnited Airlines
Deal found 9/10$656
This Gurufare deal was found by Cheapflights users on 9/10. 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.
Fri 10/177:00 amBOI - LIS
2 stops33h 10mFinnair
Wed 10/294:10 pmLIS - BOI
2 stops36h 14mFinnair
Deal found 9/10$666

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boise 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 September 11, 2025.
Use the filters below to find and compare flights from Boise to Lisbon that are best for you.

Fly from

Boise

Fly to

Lisbon

Route

Depart

Return

Price

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sun 10/19

8:20 am-9:20 am

2 stops18h 00m

Lisbon Humberto Delgado

Mon 11/3

11:20 am-4:03 pm

2 stops35h 43m

$605

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sun 10/19

7:00 am-11:05 pm

2 stops33h 05m

Lisbon Humberto Delgado

Mon 11/3

4:10 pm-10:32 pm

2 stops37h 22m

$621

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Tue 10/14

2:39 pm-9:50 pm

2 stops24h 11m

Lisbon Humberto Delgado

Wed 10/29

11:55 am-1:44 pm

3 stops31h 49m

$645

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Thu 2/19

10:39 am-8:10 am

2 stops14h 31m

Lisbon Humberto Delgado

Sun 3/1

5:00 am-5:55 pm

2 stops19h 55m

$664

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sun 10/19

5:00 am-9:20 am

2 stops21h 20m

Lisbon Humberto Delgado

Thu 10/30

5:00 am-9:58 am

2 stops34h 58m

$672

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sat 3/7

7:00 pm-9:20 am

2 stops55h 20m

Lisbon Humberto Delgado

Sat 3/28

11:20 am-9:43 am

2 stops28h 23m

$730

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Mon 10/20

9:45 am-9:20 am

2 stops16h 35m

Lisbon Humberto Delgado

Tue 10/28

5:00 am-9:58 am

2 stops34h 58m

$760

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sat 10/18

7:00 am-11:05 am

2 stops21h 05m

Lisbon Humberto Delgado

Thu 10/30

5:00 am-9:58 am

2 stops34h 58m

$774

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Wed 11/12

2:40 pm-9:20 am

2 stops35h 40m

$330

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sat 10/18

5:42 am-10:45 am

2 stops22h 03m

$348

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 18 results
1
2

Best time to book a flight from Boise to Lisbon

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

How far ahead should I book a flight from Boise to Lisbon?

Use this chart to determine the optimal time to book a round-trip flight from Boise to Lisbon. Price data was last updated on August 29, 2025.

The price you pay for your flight from Boise to Lisbon may vary depending on when you book. For the best chance of a lower fare, look to book 44 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Boise to Lisbon (average of $612). Flying from Boise to Lisbon in June is currently the most expensive (average of $1,127). 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 LIS?

Find hourly flight availability from Boise 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 September 11, 2025.

It’s optimal to fly from Boise to Lisbon in the afternoon. By choosing this option you can save up to 24% on the cost of your flight, compared to a flight in the evening.

Reviews of airlines servicing Lisbon

Get insights into the airlines that provide service to Lisbon. 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 Lisbon. Reviews last updated September 11, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from Boise to Lisbon 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
7,960 reviews

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

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
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

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
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

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!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

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
10,000 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

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 Lisbon. 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 Boise to Lisbon?

    For as low as $605, United Airlines can have you in Lisbon from Boise in 18h. The distance from Boise to Lisbon is about 5150 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Boise to Lisbon round-trip?

    Cheapflights users have booked flights from Boise to Lisbon round-trip from $601. Other airlines that can offer you cheap pricing are Air Canada, from $602, and American Airlines, from $621. You may be able to fly from Boise to Lisbon for 41% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Boise to Lisbon one-way?

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $330. Users have also found prices from $348 and $352 on Delta and Air Canada, respectively.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Boise to Lisbon (average of $612). Flying from Boise to Lisbon in June is currently the most expensive (average of $1,127). 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
Sintra
Fátima
Oeiras
Beja
Nazaré
Ericeira
Costa da Caparica
Torres Vedras
Sesimbra
Colares

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 Boise to Lisbon

See prices for flight routes from nearby airports that may be better suited for you.
Spokane to Lisbon flights
Jackson to Lisbon flights
Spokane to Faro flights

Top 4 airlines flying from Boise to Lisbon

Discover the top 4 airlines that operate flights from Boise 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$601Average$951FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$602Average$1,181FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$621Average$1,248FlexibilityNo cancel feeOn-time71%
DeltaCheapest$654Average$1,227FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.