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Cheap flights from Boise to Portugal from $330

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 11/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Boise to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
5:00 am - 6:55 amBOI  Boise Air Term. Gowen Fld-LIS Lisbon Humberto Delgado
18h 55m2 stops Denver Intl Montreal Pierre Elliott Trudeau Intl
Multiple Airlines Logo
5:00 am - 9:32 pmLIS  Lisbon Humberto Delgado-BOI Boise Air Term. Gowen Fld
23h 32m2 stops Frankfurt am Main Denver Intl
$706Multiple Airlines
Wed, Nov 4 - Wed, Nov 18
Air Canada Logo
6:20 am - 10:40 amBOI  Boise Air Term. Gowen Fld-LIS Lisbon Humberto Delgado
21h 20m2 stops San Francisco Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
11:20 am - 11:06 pmLIS  Lisbon Humberto Delgado-BOI Boise Air Term. Gowen Fld
42h 46m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl
$721Air Canada
Mon, Jan 11 - Fri, Jan 15
Multiple Airlines Logo
6:30 am - 9:20 amBOI  Boise Air Term. Gowen Fld-LIS Lisbon Humberto Delgado
19h 50m2 stops Denver Intl Toronto Pearson Intl
Multiple Airlines Logo
5:00 am - 9:32 pmLIS  Lisbon Humberto Delgado-BOI Boise Air Term. Gowen Fld
23h 32m2 stops Frankfurt am Main Denver Intl
$739Multiple Airlines
Sun, Nov 1 - Wed, Nov 11
Multiple Airlines Logo
6:30 am - 8:55 amBOI  Boise Air Term. Gowen Fld-LIS Lisbon Humberto Delgado
19h 25m3 stops Denver Intl Chicago O'Hare Intl Toronto Pearson Intl
Multiple Airlines Logo
11:20 am - 11:33 pmLIS  Lisbon Humberto Delgado-BOI Boise Air Term. Gowen Fld
19h 13m2 stops Toronto Pearson Intl San Francisco
$758Multiple Airlines
Wed, Nov 4 - Wed, Nov 18
Delta Logo
5:30 am - 5:50 pmBOI  Boise Air Term. Gowen Fld-LIS Lisbon Humberto Delgado
29h 20m2 stops Minneapolis St Paul Paris Charles de Gaulle
Delta Logo
5:00 am - 6:33 pmLIS  Lisbon Humberto Delgado-BOI Boise Air Term. Gowen Fld
19h 33m2 stops Amsterdam Schiphol Seattle/Tacoma Intl
$819Delta
Mon, Sep 21 - Thu, Oct 29
Delta Logo
6:45 am - 5:50 pmBOI  Boise Air Term. Gowen Fld-LIS Lisbon Humberto Delgado
28h 05m2 stops Seattle/Tacoma Intl Paris Charles de Gaulle
Delta Logo
5:00 am - 6:33 pmLIS  Lisbon Humberto Delgado-BOI Boise Air Term. Gowen Fld
19h 33m2 stops Amsterdam Schiphol Seattle/Tacoma Intl
$819Delta
Tue, Sep 22 - Thu, Oct 29
United Airlines Logo
5:00 am - 11:05 amBOI  Boise Air Term. Gowen Fld-LIS Lisbon Humberto Delgado
23h 05m2 stops Denver Intl Toronto Pearson Intl
United Airlines Logo
11:20 am - 11:30 amLIS  Lisbon Humberto Delgado-BOI Boise Air Term. Gowen Fld
30h 10m2 stops Toronto Pearson Intl Chicago O'Hare Intl
$819United Airlines
Wed, Sep 23 - Tue, Oct 27
Delta Logo
12:17 pm - 5:50 pmBOI  Boise Air Term. Gowen Fld-LIS Lisbon Humberto Delgado
22h 33m2 stops Seattle/Tacoma Intl Paris Charles de Gaulle
Delta Logo
5:00 am - 6:40 pmLIS  Lisbon Humberto Delgado-BOI Boise Air Term. Gowen Fld
20h 40m2 stops Amsterdam Schiphol Seattle/Tacoma Intl
$819Delta
Tue, Sep 22 - Tue, Sep 29
United Airlines Logo
5:00 am - 11:05 amBOI  Boise Air Term. Gowen Fld-LIS Lisbon Humberto Delgado
23h 05m2 stops Denver Intl Toronto Pearson Intl
United Airlines Logo
5:00 am - 6:03 pmLIS  Lisbon Humberto Delgado-BOI Boise Air Term. Gowen Fld
19h 03m2 stops Frankfurt am Main Denver Intl
$823United Airlines
Wed, Sep 23 - Thu, Oct 29
United Airlines Logo
5:00 am - 11:00 amBOI  Boise Air Term. Gowen Fld-LIS Lisbon Humberto Delgado
23h 00m2 stops Denver Intl Toronto Pearson Intl
United Airlines Logo
5:00 am - 9:52 amLIS  Lisbon Humberto Delgado-BOI Boise Air Term. Gowen Fld
34h 52m2 stops Frankfurt am Main Denver Intl
$828United Airlines
Mon, Sep 21 - Wed, Oct 28

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Air Canada flights from Boise to Portugal

Our best Air Canada deals on Boise to Portugal flight tickets
Air Canada
Jan 11
BOI6:20 amBoise Air Term. Gowen Fld
21h 20m
2 stops
LIS10:40 amLisbon Humberto Delgado
Jan 15
LIS11:20 amLisbon Humberto Delgado
42h 46m
2 stops
BOI11:06 pmBoise Air Term. Gowen Fld
$721
Air Canada
Sep 22
BOI5:40 pmBoise Air Term. Gowen Fld
34h 25m
2 stops
LIS11:05 amLisbon Humberto Delgado
Oct 27
LIS11:20 amLisbon Humberto Delgado
40h 12m
2 stops
BOI9:32 pmBoise Air Term. Gowen Fld
$825
Air Canada
Sep 24
BOI12:26 pmBoise Air Term. Gowen Fld
39h 39m
2 stops
LIS11:05 amLisbon Humberto Delgado
Oct 27
LIS11:20 amLisbon Humberto Delgado
35h 22m
2 stops
BOI4:42 pmBoise Air Term. Gowen Fld
$886

Finnair flights from Boise to Portugal

Our best Finnair deals on Boise to Portugal flight tickets
Finnair
Sep 28
BOI7:02 amBoise Air Term. Gowen Fld
25h 48m
2 stops
LIS3:50 pmLisbon Humberto Delgado
Oct 14
LIS10:40 pmLisbon Humberto Delgado
30h 49m
2 stops
BOI10:29 pmBoise Air Term. Gowen Fld
$798
Finnair
Aug 24
BOI6:44 amBoise Air Term. Gowen Fld
33h 41m
2 stops
LIS11:25 pmLisbon Humberto Delgado
Aug 28
LIS6:35 amLisbon Humberto Delgado
22h 36m
2 stops
BOI10:11 pmBoise Air Term. Gowen Fld
$1,547

momondo Fare Finder

 
Customize your flight search to find flights from Boise to Portugal 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, momondo users made 832,500 searches. Data last updated August 10, 2026.
Use the filters below to find and compare flights from Boise to Portugal that are best for you.

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

Wed 11/4

5:00 am-6:55 am

2 stops18h 55m

Lisbon Humberto Delgado

Wed 11/18

5:00 am-9:32 pm

2 stops23h 32m

$706

BoiseLisbon

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

BOILIS

Boise Air Term. Gowen Fld

Mon 1/11

6:20 am-10:40 am

2 stops21h 20m

Lisbon Humberto Delgado

Fri 1/15

11:20 am-11:06 pm

2 stops42h 46m

$721

BoiseLisbon

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

BOILIS

Boise Air Term. Gowen Fld

Sun 11/1

6:30 am-9:20 am

2 stops19h 50m

Lisbon Humberto Delgado

Wed 11/11

5:00 am-9:32 pm

2 stops23h 32m

$739
Quickest round-trip

BoiseLisbon

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

BOILIS

Boise Air Term. Gowen Fld

Wed 11/4

6:30 am-8:55 am

3 stops19h 25m

Lisbon Humberto Delgado

Wed 11/18

11:20 am-11:33 pm

2 stops19h 13m

$758

BoiseLisbon

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

BOILIS

Boise Air Term. Gowen Fld

Mon 9/21

5:30 am-5:50 pm

2 stops29h 20m

Lisbon Humberto Delgado

Thu 10/29

5:00 am-6:33 pm

2 stops19h 33m

$819

BoiseLisbon

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

BOILIS

Boise Air Term. Gowen Fld

Tue 9/22

6:45 am-5:50 pm

2 stops28h 05m

Lisbon Humberto Delgado

Thu 10/29

5:00 am-6:33 pm

2 stops19h 33m

$819

BoiseLisbon

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

BOILIS

Boise Air Term. Gowen Fld

Wed 9/23

5:00 am-11:05 am

2 stops23h 05m

Lisbon Humberto Delgado

Tue 10/27

11:20 am-11:30 am

2 stops30h 10m

$819

BoiseLisbon

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

BOILIS

Boise Air Term. Gowen Fld

Tue 9/22

12:17 pm-5:50 pm

2 stops22h 33m

Lisbon Humberto Delgado

Tue 9/29

5:00 am-6:40 pm

2 stops20h 40m

$819

BoiseLisbon

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

BOILIS

Boise Air Term. Gowen Fld

Wed 9/23

5:00 am-11:05 am

2 stops23h 05m

Lisbon Humberto Delgado

Thu 10/29

5:00 am-6:03 pm

2 stops19h 03m

$823

BoiseLisbon

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

BOILIS

Boise Air Term. Gowen Fld

Mon 9/21

5:00 am-11:00 am

2 stops23h 00m

Lisbon Humberto Delgado

Wed 10/28

5:00 am-9:52 am

2 stops34h 52m

$828

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
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See travel insights to Portugal from

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

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

Fastest flight time

19h 18m

Direct flights

None
The fastest flight from Boise to Portugal takes 19h 18m
There are no direct flights from Boise to Portugal. There are no popular flight routes from Boise to Portugal.
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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?

  • 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
United AirlinesPriceFrom $467Free CancellationRating
7.4
10,099 reviews
Search United Airlines flights
DeltaPriceFrom $549Free CancellationRating
7.8
8,497 reviews
Search Delta 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.

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Find better results for your trip to Portugal

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