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

Cheapflights users have booked flights from Boise to Lisbon round-trip from $876. Other airlines that can offer you cheap pricing are United Airlines, from $925, and Air Canada, from $1,053. You may be able to fly from Boise to Lisbon for 17% less than the average price by searching for these airlines.

What is the cheapest day to fly from Boise to Lisbon?

Travelers seeking maximum savings on their Boise to Lisbon flight should consider departing on Monday afternoons when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from Boise to Lisbon?

The most popular airlines flying from Boise to Lisbon are American Airlines, Air Canada and Air France. Something to consider prior to booking your flight.

What is the cheapest day to fly round-trip from Boise to Lisbon?

Flying to your destination on a Friday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Lisbon. Check prices with Cheapflights to find a great deal for your trip.

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

Travelers have found it’s best to book a flight 45 days in advance to save up to 72% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 45 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Boise to Lisbon 1-2 weeks in advance for as low as $1,014, or $1,014 for flights within the next 24 hours.

What is the cheapest month to fly from Boise to Lisbon?

Flights from Boise to Lisbon lean towards being more expensive in June. Prices are generally better when you fly from Boise to Lisbon in February, with the cheapest ticket starting at $645.

Most accurate provider : When it comes to deals on Boise-Lisbon flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Boise-Lisbon flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Boise-Lisbon flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Boise-Lisbon flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boise-Lisbon flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

$678+ Flights from Boise to Lisbon

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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 February or November, booked 46 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

Cheap flight deals from Boise to Lisbon

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$876 (Iberia)
Popular in	June
Cheapest in	February
Average price	$1,059

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 Boise Air Term. Gowen Fld to Lisbon Humberto Delgado

Search Deals

Highest demand for flights based on searches. 16% potential increase in price ($207 potential increase over avg. RT price).

Search Deals

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 April 2025

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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 April 24, 2025.

Sun 11/2310:39 amBOI - LIS

2 stops39h 41mAir Canada

Sat 12/1311:00 amLIS - BOI

2 stops41h 16mAir Canada

Deal found 4/23

$678

Fri 10/243:05 pmBOI - LIS

2 stops43h 00mScandinavian Airlines

Mon 10/274:55 pmLIS - BOI

2 stops36h 25mScandinavian Airlines

Deal found 4/23

$710

Fri 10/2410:45 amBOI - LIS

3 stops17h 20mMultiple Airlines

Mon 10/2711:00 amLIS - BOI

2 stops30h 37mMultiple Airlines

Deal found 4/23

$857

Tue 5/131:38 pmBOI - LIS

2 stops21h 47mIberia

Wed 5/216:35 amLIS - BOI

2 stops22h 25mIberia

Deal found 4/23

$876

Tue 5/132:00 pmBOI - LIS

2 stops36h 20mUnited Airlines

Wed 5/2110:25 amLIS - BOI

2 stops19h 27mUnited Airlines

Deal found 4/23

$925

Best flights from Boise to Lisbon
Discover carefully curated flight deals from Boise to Lisbon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 24, 2025.

Tue 5/131:38 pmBOI - LIS

2 stops21h 47mIberia

Wed 5/216:35 amLIS - BOI

2 stops22h 25mIberia

Deal found 4/23

$876

Tue 5/132:00 pmBOI - LIS

2 stops36h 20mUnited Airlines

Wed 5/2110:25 amLIS - BOI

2 stops19h 27mUnited Airlines

Deal found 4/23

$925

Sat 5/175:25 pmBOI - LIS

2 stops56h 55mAir Canada

Sun 6/81:10 pmLIS - BOI

2 stops40h 42mAir Canada

Deal found 4/23

$1,053

Tue 5/138:30 amBOI - LIS

2 stops19h 35mMultiple Airlines

Wed 5/2111:25 amLIS - BOI

3 stops29h 21mMultiple Airlines

Deal found 4/23

$1,119

Sat 5/173:39 pmBOI - LIS

3 stops23h 26mScandinavian Airlines

Sun 6/87:15 amLIS - BOI

2 stops22h 46mScandinavian Airlines

Deal found 4/23

$1,699

Last-minute flights from Boise to Lisbon
Discover last-minute flight deals from Boise to Lisbon. Data last updated April 24, 2025 and is based on user searches.

Tue 4/2910:00 amBOI - LIS

1 stop18h 30mMultiple Airlines

Mon 5/1210:10 pmLIS - BOI

2 stops52h 53mMultiple Airlines

Deal found 4/23

$1,392

Fri 5/27:41 amBOI - LIS

2 stops18h 39mAir Canada

Mon 5/1211:25 amLIS - BOI

2 stops37h 35mAir Canada

Deal found 4/23

$2,135

Tue 5/131:38 pmBOI - LIS

2 stops21h 47mIberia

Wed 5/216:35 amLIS - BOI

2 stops22h 25mIberia

Deal found 4/23

$876

Tue 5/132:00 pmBOI - LIS

2 stops36h 20mUnited Airlines

Wed 5/2110:25 amLIS - BOI

2 stops19h 27mUnited Airlines

Deal found 4/23

$925

Tue 5/138:30 amBOI - LIS

2 stops19h 35mMultiple Airlines

Wed 5/2111:25 amLIS - BOI

3 stops29h 21mMultiple Airlines

Deal found 4/23

$1,119

Sat 5/175:25 pmBOI - LIS

2 stops56h 55mAir Canada

Sun 6/81:10 pmLIS - BOI

2 stops40h 42mAir Canada

Deal found 4/23

$1,053

Sat 5/173:39 pmBOI - LIS

3 stops23h 26mScandinavian Airlines

Sun 6/87:15 amLIS - BOI

2 stops22h 46mScandinavian Airlines

Deal found 4/23

$1,699

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Tue 5/13

1:38 pm-6:25 pm

2 stops21h 47m

Lisbon Humberto Delgado

Wed 5/21

6:35 am-10:00 pm

2 stops22h 25m

$876

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Tue 5/13

2:00 pm-9:20 am

2 stops36h 20m

Lisbon Humberto Delgado

Wed 5/21

10:25 am-10:52 pm

2 stops19h 27m

$925

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sat 5/17

5:25 pm-9:20 am

2 stops56h 55m

Lisbon Humberto Delgado

Sun 6/8

1:10 pm-10:52 pm

2 stops40h 42m

$1,053

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Tue 5/13

8:30 am-11:05 am

2 stops19h 35m

Lisbon Humberto Delgado

Wed 5/21

11:25 am-9:46 am

3 stops29h 21m

$1,119

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sat 5/17

3:39 pm-10:05 pm

3 stops23h 26m

Lisbon Humberto Delgado

Sun 6/8

7:15 am-11:01 pm

2 stops22h 46m

$1,699

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

Compare providers for flights from Boise to Lisbon

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boise to Lisbon in April.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Boise-Lisbon flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Boise-Lisbon flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Boise-Lisbon flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Boise-Lisbon flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boise-Lisbon flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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?

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 $1,203). 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?

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.

Rainfall in Lisbon by month

In terms of precipitation, rainfall in Lisbon 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 Lisbon when rainfall is around 0.2 in.

Temperature in Lisbon by month

If weather is an important factor for your trip to Lisbon, 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).

Reviews of airlines servicing Lisbon

United Airlines

7.4

Good

8,685 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

United Airlines

7.4

Good

8,685 reviews

United Airlines

7.4

Good

8,685 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Scandinavian Airlines

7.3

Good

1,344 reviews

United Airlines

7.4

Good

8,685 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Air Canada

7.0

Good

9,192 reviews

United Airlines

7.4

Good

8,685 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Iberia

7.0

Good

2,684 reviews

United Airlines

7.4

Good

8,685 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

What are the cheapest airlines flying from Boise to Lisbon round-trip?
Cheapflights users have booked flights from Boise to Lisbon round-trip from $876. Other airlines that can offer you cheap pricing are United Airlines, from $925, and Air Canada, from $1,053. You may be able to fly from Boise to Lisbon for 17% less than the average price by searching for these airlines.
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 $1,203). 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

Sintra

Beja

Costa da Caparica

Nazaré

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Oeiras

Sesimbra

Fátima

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Alternative routes for Boise to Lisbon

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Other flights to Lisbon

Top 6 airlines flying from Boise to Lisbon

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$618	Average$1,137	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$621	Average$1,094	FlexibilityNo cancel fee	On-time71%
Air France	Cheapest$654	Average$1,042	FlexibilityNo cancel fee	On-time77%
Delta	Cheapest$654	Average$1,175	FlexibilityNo cancel fee	On-timeN/A
Air Canada	Cheapest$701	Average$1,135	FlexibilityNo cancel fee	On-time67%
KLM	Cheapest$814	Average$989	FlexibilityNo cancel fee	On-time75%

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$678+ Cheap flights from Boise (BOI) to Lisbon (LIS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/23. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Boise to Lisbon with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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

Cheap flight deals from Boise to Lisbon

Most accurate provider

Most trusted provider

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Boise to Lisbon

Cheapest flights from Boise to LisbonExplore 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 April 24, 2025.

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 April 24, 2025.

Cheapflights Fare Finder

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

Compare providers for flights from Boise to Lisbon

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boise to Lisbon in April.

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.

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 April 18, 2025.

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

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 April 24, 2025.

Rainfall in Lisbon by month

Plan your trip to Lisbon by taking into account the average rainfall totals by month.

Temperature in Lisbon by month

Plan your trip to Lisbon by taking into account the average temperature totals by month.

Reviews of airlines servicing Lisbon

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.

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

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

How can I find direct flights from Boise to Lisbon?

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

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

Traveling to a place near Boise?

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Alternative routes for Boise to Lisbon

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Top 6 airlines flying from Boise to Lisbon

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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 April 24, 2025.