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Cheap flights from Boise to Portugal from $363

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 7/26. 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
1:41 pm - 11:25 pm
BOI
-
LIS
26h 44m
2 stops
Multiple Airlines Logo
4:35 pm - 10:54 pm
LIS
-
BOI
37h 19m
2 stops
$664Multiple Airlines
Tue, Apr 21 - Tue, Apr 28
KLM Logo
3:44 pm - 6:45 pm
BOI
-
LIS
20h 01m
2 stops
KLM Logo
5:00 am - 4:14 pm
LIS
-
BOI
18h 14m
2 stops
$666KLM
Tue, Apr 21 - Tue, Apr 28
Delta Logo
1:52 pm - 5:50 pm
BOI
-
LIS
20h 58m
2 stops
Delta Logo
5:00 am - 4:14 pm
LIS
-
BOI
18h 14m
2 stops
$670Delta
Tue, Apr 21 - Tue, May 5
United Airlines Logo
4:08 pm - 10:45 pm
BOI
-
LIS
23h 37m
2 stops
United Airlines Logo
5:05 am - 7:11 pm
LIS
-
BOI
21h 06m
2 stops
$672United Airlines
Thu, Apr 23 - Thu, Apr 30
Multiple Airlines Logo
3:44 pm - 5:50 pm
BOI
-
LIS
19h 06m
2 stops
Multiple Airlines Logo
5:00 am - 5:50 pm
LIS
-
BOI
19h 50m
2 stops
$720Multiple Airlines
Mon, Apr 27 - Sat, May 9
Delta Logo
8:30 am - 2:55 pm
BOI
-
LIS
23h 25m
2 stops
Delta Logo
5:00 am - 8:00 pm
LIS
-
BOI
22h 00m
2 stops
$735Delta
Tue, Apr 14 - Tue, Apr 28
Delta Logo
1:52 pm - 6:45 pm
BOI
-
LIS
21h 53m
2 stops
Delta Logo
5:00 am - 4:14 pm
LIS
-
BOI
18h 14m
2 stops
$739Delta
Tue, Apr 14 - Tue, Apr 28
Multiple Airlines Logo
2:18 pm - 5:50 pm
BOI
-
LIS
20h 32m
2 stops
Multiple Airlines Logo
9:20 am - 10:13 pm
LIS
-
BOI
19h 53m
2 stops
$750Multiple Airlines
Tue, May 5 - Tue, May 12
Delta Logo
8:30 am - 2:55 pm
BOI
-
LIS
23h 25m
2 stops
Delta Logo
5:00 am - 10:24 pm
LIS
-
BOI
24h 24m
2 stops
$785Delta
Tue, Apr 14 - Tue, Apr 28
Delta Logo
11:30 pm - 11:15 am
BOI
-
LIS
28h 45m
2 stops
Delta Logo
5:00 am - 6:35 pm
LIS
-
BOI
20h 35m
2 stops
$793Delta
Sun, Sep 20 - Thu, Oct 1

KLM flights from Boise to Portugal

Our best KLM deals on Boise to Portugal flight tickets
KLM
Apr 21
BOI3:44 pmBoise Air Term. Gowen Fld
20h 01m
2 stops
LIS6:45 pmLisbon Humberto Delgado
Apr 28
LIS5:00 amLisbon Humberto Delgado
18h 14m
2 stops
BOI4:14 pmBoise Air Term. Gowen Fld
$666
KLM
Jun 1
BOI3:14 pmBoise Air Term. Gowen Fld
20h 31m
2 stops
LIS6:45 pmLisbon Humberto Delgado
Jun 10
LIS5:00 amLisbon Humberto Delgado
19h 52m
2 stops
BOI5:52 pmBoise Air Term. Gowen Fld
$989
KLM
Jun 1
BOI3:14 pmBoise Air Term. Gowen Fld
20h 31m
2 stops
LIS6:45 pmLisbon Humberto Delgado
Jun 10
LIS5:00 amLisbon Humberto Delgado
17h 38m
2 stops
BOI3:38 pmBoise Air Term. Gowen Fld
$1,039

United Airlines flights from Boise to Portugal

Our best United Airlines deals on Boise to Portugal flight tickets
United Airlines
Apr 23
BOI4:08 pmBoise Air Term. Gowen Fld
23h 37m
2 stops
LIS10:45 pmLisbon Humberto Delgado
Apr 30
LIS5:05 amLisbon Humberto Delgado
21h 06m
2 stops
BOI7:11 pmBoise Air Term. Gowen Fld
$672
United Airlines
Jul 6
BOI7:00 amBoise Air Term. Gowen Fld
20h 30m
2 stops
LIS10:30 amLisbon Humberto Delgado
Jul 23
LIS11:25 amLisbon Humberto Delgado
36h 19m
2 stops
BOI4:44 pmBoise Air Term. Gowen Fld
$976
United Airlines
Jun 1
BOI10:41 amBoise Air Term. Gowen Fld
41h 19m
2 stops
LIS11:00 amLisbon Humberto Delgado
Jun 10
LIS11:25 amLisbon Humberto Delgado
37h 31m
2 stops
BOI5:56 pmBoise Air Term. Gowen Fld
$980

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 March 24, 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

Tue 4/21

1:41 pm-11:25 pm

2 stops26h 44m

Lisbon Humberto Delgado

Tue 4/28

4:35 pm-10:54 pm

2 stops37h 19m

$664
Quickest round-trip

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Tue 4/21

3:44 pm-6:45 pm

2 stops20h 01m

Lisbon Humberto Delgado

Tue 4/28

5:00 am-4:14 pm

2 stops18h 14m

$666

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Tue 4/21

1:52 pm-5:50 pm

2 stops20h 58m

Lisbon Humberto Delgado

Tue 5/5

5:00 am-4:14 pm

2 stops18h 14m

$670

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Thu 4/23

4:08 pm-10:45 pm

2 stops23h 37m

Lisbon Humberto Delgado

Thu 4/30

5:05 am-7:11 pm

2 stops21h 06m

$672

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Mon 4/27

3:44 pm-5:50 pm

2 stops19h 06m

Lisbon Humberto Delgado

Sat 5/9

5:00 am-5:50 pm

2 stops19h 50m

$720

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Tue 4/14

8:30 am-2:55 pm

2 stops23h 25m

Lisbon Humberto Delgado

Tue 4/28

5:00 am-8:00 pm

2 stops22h 00m

$735

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Tue 4/14

1:52 pm-6:45 pm

2 stops21h 53m

Lisbon Humberto Delgado

Tue 4/28

5:00 am-4:14 pm

2 stops18h 14m

$739

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Tue 5/5

2:18 pm-5:50 pm

2 stops20h 32m

Lisbon Humberto Delgado

Tue 5/12

9:20 am-10:13 pm

2 stops19h 53m

$750

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Tue 4/14

8:30 am-2:55 pm

2 stops23h 25m

Lisbon Humberto Delgado

Tue 4/28

5:00 am-10:24 pm

2 stops24h 24m

$785

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sun 9/20

11:30 pm-11:15 am

2 stops28h 45m

Lisbon Humberto Delgado

Thu 10/1

5:00 am-6:35 pm

2 stops20h 35m

$793

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 airline that flies from Boise Air Term. Gowen Fld to Portugal?

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

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

20h 01m

Direct flights

None
The fastest flight from Boise to Portugal takes 20h 01m
There are no direct flights from Boise to Portugal. There are no popular flight routes from Boise to Portugal.
Search flight deals

  • 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
8,320 reviews
Search Delta flights
United AirlinesPriceFrom $618Free CancellationRating
7.4
9,469 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.

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