What is the cheapest airline that flies from Boise Air Term. Gowen Fld to Portugal?

Delta, United Airlines, and Air France are the most popular carriers operating from Boise Air Term. Gowen Fld to Portugal

When did momondo last update prices for flights from Boise Air Term. Gowen Fld Airport to Portugal?

Prices for flights from Boise Air Term. Gowen Fld Airport to Portugal are updated daily.

How many operators does momondo search for flights from Boise Air Term. Gowen Fld Airport to Portugal?

The number of operators available for flights from Boise Air Term. Gowen Fld Airport to Portugal is 2 as of November 2026.

How old do you have to be to fly from Boise Air Term. Gowen Fld Airport to Portugal?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Boise Air Term. Gowen Fld Airport to Portugal.

What documentation or ID do you need to fly to Portugal?

The required travel and health documents for your Portugal trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Portugal. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$338 Cheap Flights from Boise to Portugal in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Boise to Portugal

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Cheap round-trip flights

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4:08 pm - 8:10 amBOI Boise Air Term. Gowen Fld-LIS Lisbon Humberto Delgado

33h 02m2 stops San Francisco Newark

11:20 am - 9:25 pmLIS Lisbon Humberto Delgado-BOI Boise Air Term. Gowen Fld

41h 05m2 stops Toronto Pearson Intl San Francisco

$731United Airlines

Sun, Feb 14 - Thu, Feb 18

6:25 am - 8:10 amBOI Boise Air Term. Gowen Fld-LIS Lisbon Humberto Delgado

18h 45m2 stops Denver Intl Newark

5:00 am - 9:25 pmLIS Lisbon Humberto Delgado-BOI Boise Air Term. Gowen Fld

23h 25m2 stops Frankfurt am Main San Francisco

$733United Airlines

Sun, Feb 14 - Thu, Feb 18

7:00 am - 3:50 pmBOI Boise Air Term. Gowen Fld-LIS Lisbon Humberto Delgado

25h 50m2 stops Dallas/Fort Worth Helsinki-Vantaa

6:35 am - 10:38 pmLIS Lisbon Humberto Delgado-BOI Boise Air Term. Gowen Fld

23h 03m2 stops Madrid Barajas Dallas/Fort Worth

$744Multiple Airlines

Tue, Apr 13 - Tue, Apr 27

7:00 am - 11:25 pmBOI Boise Air Term. Gowen Fld-LIS Lisbon Humberto Delgado

33h 25m2 stops Dallas/Fort Worth Madrid Barajas

6:35 am - 10:38 pmLIS Lisbon Humberto Delgado-BOI Boise Air Term. Gowen Fld

23h 03m2 stops Madrid Barajas Dallas/Fort Worth

$752Finnair

Tue, Apr 13 - Tue, Apr 27

2:43 pm - 10:45 pmBOI Boise Air Term. Gowen Fld-LIS Lisbon Humberto Delgado

49h 02m2 stops Denver Intl Munich Franz Josef Strauss

6:15 am - 9:16 pmLIS Lisbon Humberto Delgado-BOI Boise Air Term. Gowen Fld

22h 01m2 stops Munich Franz Josef Strauss Denver Intl

$781Lufthansa

Sat, Apr 10 - Sat, Apr 17

5:00 am - 9:45 amBOI Boise Air Term. Gowen Fld-OPO Porto

21h 45m2 stops Denver Intl Newark

12:00 pm - 7:16 pmOPO Porto-BOI Boise Air Term. Gowen Fld

38h 16m2 stops Frankfurt am Main San Francisco

$826United Airlines

Sun, Apr 18 - Mon, May 3

5:00 am - 9:45 amBOI Boise Air Term. Gowen Fld-OPO Porto

21h 45m2 stops Denver Intl Newark

12:00 pm - 11:41 pmOPO Porto-BOI Boise Air Term. Gowen Fld

42h 41m2 stops Frankfurt am Main San Francisco

$827United Airlines

Sun, Apr 18 - Mon, May 3

2:21 pm - 10:00 pmBOI Boise Air Term. Gowen Fld-OPO Porto

24h 39m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle

5:00 am - 10:05 pmOPO Porto-BOI Boise Air Term. Gowen Fld

24h 05m2 stops Amsterdam Schiphol Salt Lake City

$849Delta

Mon, Jan 25 - Sun, Feb 14

5:36 am - 9:00 amBOI Boise Air Term. Gowen Fld-LIS Lisbon Humberto Delgado

20h 24m2 stops Minneapolis St Paul Boston Logan Intl

5:00 am - 7:17 pmLIS Lisbon Humberto Delgado-BOI Boise Air Term. Gowen Fld

21h 17m2 stops Amsterdam Schiphol Seattle/Tacoma Intl

$856Delta

Mon, Dec 28 - Tue, Jan 12

5:36 am - 9:00 amBOI Boise Air Term. Gowen Fld-LIS Lisbon Humberto Delgado

20h 24m2 stops Minneapolis St Paul Boston Logan Intl

5:00 am - 8:33 pmLIS Lisbon Humberto Delgado-BOI Boise Air Term. Gowen Fld

22h 33m2 stops Amsterdam Schiphol Seattle/Tacoma Intl

$856Delta

Tue, Dec 29 - Tue, Jan 12

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United Airlines flights from Boise to Portugal

Our best United Airlines deals on Boise to Portugal flight tickets

United Airlines

Feb 14

BOI4:08 pmBoise Air Term. Gowen Fld

33h 02m

2 stops

LIS8:10 amLisbon Humberto Delgado

Feb 18

LIS11:20 amLisbon Humberto Delgado

41h 05m

2 stops

BOI9:25 pmBoise Air Term. Gowen Fld

$731

United Airlines

Feb 14

BOI6:25 amBoise Air Term. Gowen Fld

18h 45m

2 stops

LIS8:10 amLisbon Humberto Delgado

Feb 18

LIS5:00 amLisbon Humberto Delgado

23h 25m

2 stops

BOI9:25 pmBoise Air Term. Gowen Fld

$733

United Airlines

Apr 18

BOI5:00 amBoise Air Term. Gowen Fld

21h 45m

2 stops

OPO9:45 amPorto

May 3

OPO12:00 pmPorto

38h 16m

2 stops

BOI7:16 pmBoise Air Term. Gowen Fld

$826

Finnair flights from Boise to Portugal

Our best Finnair deals on Boise to Portugal flight tickets

Finnair

Apr 13

BOI7:00 amBoise Air Term. Gowen Fld

33h 25m

2 stops

LIS11:25 pmLisbon Humberto Delgado

Apr 27

LIS6:35 amLisbon Humberto Delgado

23h 03m

2 stops

BOI10:38 pmBoise Air Term. Gowen Fld

$752

Finnair

Mar 30

BOI7:05 amBoise Air Term. Gowen Fld

33h 20m

2 stops

LIS11:25 pmLisbon Humberto Delgado

Apr 12

LIS4:35 pmLisbon Humberto Delgado

37h 03m

2 stops

BOI10:38 pmBoise Air Term. Gowen Fld

$813

Finnair

Dec 29

BOI6:30 amBoise Air Term. Gowen Fld

25h 55m

2 stops

LIS3:25 pmLisbon Humberto Delgado

Jan 8

LIS6:30 amLisbon Humberto Delgado

23h 24m

2 stops

BOI10:54 pmBoise Air Term. Gowen Fld

$1,173

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoiseLisbon

BOI Boise Air Term. Gowen Fld - LIS Lisbon Humberto Delgado

BOILIS

Boise Air Term. Gowen Fld

Sun 2/14

4:08 pm-8:10 am

2 stops33h 02m

Lisbon Humberto Delgado

Thu 2/18

11:20 am-9:25 pm

2 stops41h 05m

$731

BoiseLisbon

BOI Boise Air Term. Gowen Fld - LIS Lisbon Humberto Delgado

BOILIS

Boise Air Term. Gowen Fld

Sun 2/14

6:25 am-8:10 am

2 stops18h 45m

Lisbon Humberto Delgado

Thu 2/18

5:00 am-9:25 pm

2 stops23h 25m

$733

BoiseLisbon

BOI Boise Air Term. Gowen Fld - LIS Lisbon Humberto Delgado

BOILIS

Boise Air Term. Gowen Fld

Tue 4/13

7:00 am-3:50 pm

2 stops25h 50m

Lisbon Humberto Delgado

Tue 4/27

6:35 am-10:38 pm

2 stops23h 03m

$744

BoiseLisbon

BOI Boise Air Term. Gowen Fld - LIS Lisbon Humberto Delgado

BOILIS

Boise Air Term. Gowen Fld

Tue 4/13

7:00 am-11:25 pm

2 stops33h 25m

Lisbon Humberto Delgado

Tue 4/27

6:35 am-10:38 pm

2 stops23h 03m

$752

BoiseLisbon

BOI Boise Air Term. Gowen Fld - LIS Lisbon Humberto Delgado

BOILIS

Boise Air Term. Gowen Fld

Sat 4/10

2:43 pm-10:45 pm

2 stops49h 02m

Lisbon Humberto Delgado

Sat 4/17

6:15 am-9:16 pm

2 stops22h 01m

$781

BoisePorto

BOI Boise Air Term. Gowen Fld - OPO Porto

BOIOPO

Boise Air Term. Gowen Fld

Sun 4/18

5:00 am-9:45 am

2 stops21h 45m

Porto

Mon 5/3

12:00 pm-7:16 pm

2 stops38h 16m

$826

BoisePorto

BOI Boise Air Term. Gowen Fld - OPO Porto

BOIOPO

Boise Air Term. Gowen Fld

Sun 4/18

5:00 am-9:45 am

2 stops21h 45m

Porto

Mon 5/3

12:00 pm-11:41 pm

2 stops42h 41m

$827

BoisePorto

BOI Boise Air Term. Gowen Fld - OPO Porto

BOIOPO

Boise Air Term. Gowen Fld

Mon 1/25

2:21 pm-10:00 pm

2 stops24h 39m

Porto

Sun 2/14

5:00 am-10:05 pm

2 stops24h 05m

$849

Quickest round-trip

BoiseLisbon

BOI Boise Air Term. Gowen Fld - LIS Lisbon Humberto Delgado

BOILIS

Boise Air Term. Gowen Fld

Mon 12/28

5:36 am-9:00 am

2 stops20h 24m

Lisbon Humberto Delgado

Tue 1/12

5:00 am-7:17 pm

2 stops21h 17m

$856

BoiseLisbon

BOI Boise Air Term. Gowen Fld - LIS Lisbon Humberto Delgado

BOILIS

Boise Air Term. Gowen Fld

Tue 12/29

5:36 am-9:00 am

2 stops20h 24m

Lisbon Humberto Delgado

Tue 1/12

5:00 am-8:33 pm

2 stops22h 33m

$856

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Boise to Portugal

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Portugal?

The cheapest month to fly to Portugal from Boise is in July. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of July, then book flights to Portugal from Boise during January instead. Flights to Portugal in January, while not as cheap as those in July, still average around $0.

Cheap Boise to Portugal flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boise to Portugal

Best Price Found	$338
Fastest flight time	19h 03m
Direct flights	None

The best one-way flight to Portugal from Boise in the past 72 hours is $338. The best round-trip flight deal from Boise to Portugal found on momondo in the last 72 hours is $731.

The fastest flight from Boise to Portugal takes 19h 03m

There are no direct flights from Boise to Portugal. There are no popular flight routes from Boise to Portugal.

Search flight deals

Frequently asked questions about flying from Boise to Portugal

When did momondo last update prices for flights from Boise Air Term. Gowen Fld Airport to Portugal?
Prices for flights from Boise Air Term. Gowen Fld Airport to Portugal are updated daily.
How many operators does momondo search for flights from Boise Air Term. Gowen Fld Airport to Portugal?
The number of operators available for flights from Boise Air Term. Gowen Fld Airport to Portugal is 2 as of November 2026.
How old do you have to be to fly from Boise Air Term. Gowen Fld Airport to Portugal?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Boise Air Term. Gowen Fld Airport to Portugal.
What documentation or ID do you need to fly to Portugal?
The required travel and health documents for your Portugal trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Portugal. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Boise to Portugal

Compare and see reviews for airlines that fly from Boise to Portugal with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $590	Free Cancellation	Rating 7.8 8,700 reviews		Search Delta flights
United Airlines	PriceFrom $737	Free Cancellation	Rating 7.3 10,476 reviews		Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Boise to Portugal?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Boise to Portugal. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Boise to Portugal with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Portugal from Boise with this policy.

How can momondo help me find flights from Boise to Portugal?

momondo helps you find the best flight between Boise and Portugal by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Boise to Portugal right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Portugal, momondo offers a useful price alert feature which will track prices for flights to Portugal from Boise and alert you when they change.

An easier way to manage your Portugal trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Popular cities in Portugal

Flights to Lisbonfrom $358

Flights to Portofrom $399

Flights to Funchalfrom $594

Flights to Farofrom $577

Flights to Ponta Delgadafrom $401

Flights to Lajesfrom $312

Flights to Hortafrom $585

Flights to Pico Islandfrom $585

Flights to Porto Santofrom $931

Flights to Velasfrom $588

Cheap flights from Boise to Portugal from $338

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boise to Portugal departing on 3/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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United Airlines flights from Boise to Portugal

Our best United Airlines deals on Boise to Portugal flight tickets

Finnair flights from Boise to Portugal

Our best Finnair deals on Boise to Portugal flight tickets

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How to get the cheapest flight ticket from Boise to Portugal

What is the cheapest month to fly to Portugal?

What is the cheapest airline that flies from Boise Air Term. Gowen Fld to Portugal?

Cheap Boise to Portugal flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Boise to Portugal

Best airlines flying from Boise to Portugal

Compare and see reviews for airlines that fly from Boise to Portugal with momondo

Why use momondo?

An easier way to manage your Portugal trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Portugal

Popular cities in Portugal

Popular flights according to clicks in the last 7 days on momondo

Boise flight routes

According to popular flight searches on momondo this year

Portugal flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Portugal

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Portugal

List of cabin classes available on flights landing in Portugal. Availability may vary depending on flight origin and airline.

Complete your trip to Portugal

Explore popular destinations other users love

According to popular flight searches on momondo this year