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Cheap flights from Boise to Portugal from $527

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 6/1. 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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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.
United Airlines Logo
5:22 pm - 8:10 am
BOI
-
LIS
31h 48m
2 stops
United Airlines Logo
1:00 pm - 11:06 pm
LIS
-
BOI
41h 06m
2 stops
$728United Airlines
So, Nov 1 - Do, Nov 12
United Airlines Logo
5:00 am - 9:20 am
BOI
-
LIS
21h 20m
2 stops
United Airlines Logo
5:00 am - 11:05 pm
LIS
-
BOI
25h 05m
2 stops
$730United Airlines
Di, Okt 20 - Di, Nov 3
United Airlines Logo
7:00 am - 10:15 am
BOI
-
LIS
20h 15m
2 stops
United Airlines Logo
5:00 am - 11:59 pm
LIS
-
BOI
25h 59m
2 stops
$731United Airlines
Mo, Nov 2 - Mi, Nov 11
Air Canada Logo
6:55 pm - 11:00 am
BOI
-
LIS
34h 05m
2 stops
Air Canada Logo
1:00 pm - 7:16 pm
LIS
-
BOI
37h 16m
2 stops
$732Air Canada
Sa, Okt 31 - Do, Nov 12
Delta Logo
3:22 pm - 10:00 am
BOI
-
LIS
35h 38m
2 stops
Delta Logo
5:30 am - 11:08 pm
LIS
-
BOI
24h 38m
2 stops
$740Delta
Sa, Okt 24 - Di, Nov 3
Delta Logo
5:45 pm - 8:00 am
BOI
-
LIS
32h 15m
2 stops
Delta Logo
12:20 pm - 4:49 pm
LIS
-
BOI
35h 29m
2 stops
$752Delta
Sa, Okt 31 - Mo, Nov 9
Delta Logo
1:15 pm - 2:55 pm
BOI
-
LIS
18h 40m
2 stops
Delta Logo
12:20 pm - 3:30 pm
LIS
-
BOI
34h 10m
2 stops
$753Delta
So, Okt 18 - Mo, Nov 2
United Airlines Logo
6:25 am - 9:20 am
BOI
-
LIS
19h 55m
2 stops
United Airlines Logo
5:00 am - 7:16 pm
LIS
-
BOI
21h 16m
2 stops
$780United Airlines
Do, Okt 22 - Di, Nov 3
Air Canada Logo
7:00 am - 11:00 am
BOI
-
LIS
22h 00m
2 stops
Air Canada Logo
1:00 pm - 9:16 pm
LIS
-
BOI
39h 16m
2 stops
$782Air Canada
Do, Okt 29 - Do, Nov 12
United Airlines Logo
5:00 am - 9:20 am
BOI
-
LIS
21h 20m
2 stops
United Airlines Logo
1:00 pm - 9:16 pm
LIS
-
BOI
38h 16m
2 stops
$783United Airlines
Mi, Okt 21 - Fr, Okt 30

United Airlines flights from Boise to Portugal

Our best United Airlines deals on Boise to Portugal flight tickets
United Airlines
Nov 1
BOI5:22 pmBoise Air Term. Gowen Fld
31h 48m
2 stops
LIS8:10 amLisbon Humberto Delgado
Nov 12
LIS1:00 pmLisbon Humberto Delgado
41h 06m
2 stops
BOI11:06 pmBoise Air Term. Gowen Fld
$728
United Airlines
Oct 20
BOI5:00 amBoise Air Term. Gowen Fld
21h 20m
2 stops
LIS9:20 amLisbon Humberto Delgado
Nov 3
LIS5:00 amLisbon Humberto Delgado
25h 05m
2 stops
BOI11:05 pmBoise Air Term. Gowen Fld
$730
United Airlines
Nov 2
BOI7:00 amBoise Air Term. Gowen Fld
18h 10m
2 stops
LIS8:10 amLisbon Humberto Delgado
Nov 10
LIS5:00 amLisbon Humberto Delgado
23h 15m
2 stops
BOI9:15 pmBoise Air Term. Gowen Fld
$731

Air Canada flights from Boise to Portugal

Our best Air Canada deals on Boise to Portugal flight tickets
Air Canada
Oct 31
BOI6:55 pmBoise Air Term. Gowen Fld
34h 05m
2 stops
LIS11:00 amLisbon Humberto Delgado
Nov 12
LIS1:00 pmLisbon Humberto Delgado
37h 16m
2 stops
BOI7:16 pmBoise Air Term. Gowen Fld
$732
Air Canada
Oct 29
BOI7:00 amBoise Air Term. Gowen Fld
22h 00m
2 stops
LIS11:00 amLisbon Humberto Delgado
Nov 12
LIS1:00 pmLisbon Humberto Delgado
39h 16m
2 stops
BOI9:16 pmBoise Air Term. Gowen Fld
$782
Air Canada
Oct 19
BOI7:05 pmBoise Air Term. Gowen Fld
31h 15m
2 stops
LIS9:20 amLisbon Humberto Delgado
Nov 1
LIS11:20 amLisbon Humberto Delgado
36h 29m
2 stops
BOI4:49 pmBoise Air Term. Gowen Fld
$801

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 Mai 11, 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 - LIS

BOILIS

Boise Air Term. Gowen Fld

So 11/1

5:22 pm-8:10 am

2 stops31h 48m

Lisbon Humberto Delgado

Do 11/12

1:00 pm-11:06 pm

2 stops41h 06m

$728

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Di 10/20

5:00 am-9:20 am

2 stops21h 20m

Lisbon Humberto Delgado

Di 11/3

5:00 am-11:05 pm

2 stops25h 05m

$730

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Mo 11/2

7:00 am-10:15 am

2 stops20h 15m

Lisbon Humberto Delgado

Mi 11/11

5:00 am-11:59 pm

2 stops25h 59m

$731

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sa 10/31

6:55 pm-11:00 am

2 stops34h 05m

Lisbon Humberto Delgado

Do 11/12

1:00 pm-7:16 pm

2 stops37h 16m

$732

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sa 10/24

3:22 pm-10:00 am

2 stops35h 38m

Lisbon Humberto Delgado

Di 11/3

5:30 am-11:08 pm

2 stops24h 38m

$740

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sa 10/31

5:45 pm-8:00 am

2 stops32h 15m

Lisbon Humberto Delgado

Mo 11/9

12:20 pm-4:49 pm

2 stops35h 29m

$752

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

So 10/18

1:15 pm-2:55 pm

2 stops18h 40m

Lisbon Humberto Delgado

Mo 11/2

12:20 pm-3:30 pm

2 stops34h 10m

$753
Quickest round-trip

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Do 10/22

6:25 am-9:20 am

2 stops19h 55m

Lisbon Humberto Delgado

Di 11/3

5:00 am-7:16 pm

2 stops21h 16m

$780

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Do 10/29

7:00 am-11:00 am

2 stops22h 00m

Lisbon Humberto Delgado

Do 11/12

1:00 pm-9:16 pm

2 stops39h 16m

$782

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Mi 10/21

5:00 am-9:20 am

2 stops21h 20m

Lisbon Humberto Delgado

Fr 10/30

1:00 pm-9:16 pm

2 stops38h 16m

$783

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 January. 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 January, then book flights to Portugal from Boise during February instead. Flights to Portugal in February, while not as cheap as those in January, still average around $467.

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 50m

Direct flights

None
The fastest flight from Boise to Portugal takes 19h 50m
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?

  • 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
DeltaPriceFrom $549Free CancellationRating
7.9
8,451 reviews
Search Delta flights
United AirlinesPriceFrom $618Free CancellationRating
7.4
9,699 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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1 adult
Mi 6/10
Mi 6/17
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