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Cheap flights from Idaho to Portugal from $382

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho to Portugal departing on 7/27. 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 Idaho to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
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
$710KLM
Sat, Apr 25 - Sat, May 2
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
$716KLM
Sat, Apr 25 - Sat, May 2
Delta Logo
7:15 am - 2:55 pm
GEG
-
LIS
23h 40m
2 stops
Delta Logo
5:00 am - 9:02 pm
LIS
-
GEG
24h 02m
2 stops
$720Delta
Thu, Apr 23 - Thu, Apr 30
Delta Logo
12:52 pm - 6:45 pm
BOI
-
LIS
22h 53m
2 stops
Delta Logo
5:00 am - 11:00 pm
LIS
-
BOI
25h 00m
2 stops
$725Delta
Sun, Apr 26 - Sun, May 3
Multiple Airlines Logo
1:00 pm - 10:25 pm
JAC
-
LIS
26h 25m
2 stops
Multiple Airlines Logo
7:45 pm - 4:13 pm
LIS
-
JAC
27h 28m
2 stops
$785Multiple Airlines
Mon, Apr 20 - Wed, Apr 29
American Airlines Logo
1:25 pm - 5:55 pm
JAC
-
LIS
21h 30m
2 stops
American Airlines Logo
8:55 am - 12:41 pm
LIS
-
JAC
34h 46m
2 stops
$787American Airlines
Tue, Apr 21 - Wed, Apr 29
United Airlines Logo
7:00 am - 10:45 pm
GEG
-
LIS
31h 45m
2 stops
United Airlines Logo
5:05 am - 6:51 pm
LIS
-
GEG
21h 46m
2 stops
$787United Airlines
Mon, Apr 13 - Fri, Apr 24
United Airlines Logo
12:35 pm - 10:45 pm
GEG
-
LIS
26h 10m
2 stops
United Airlines Logo
12:20 pm - 2:31 pm
LIS
-
GEG
58h 11m
3 stops
$833United Airlines
Thu, Apr 23 - Thu, Apr 30
Multiple Airlines Logo
2:18 pm - 5:50 pm
BOI
-
LIS
20h 32m
2 stops
Multiple Airlines Logo
8:55 am - 10:13 pm
LIS
-
BOI
20h 18m
2 stops
$837Multiple Airlines
Tue, May 5 - Sat, May 16
American Airlines Logo
4:30 pm - 5:55 pm
JAC
-
LIS
18h 25m
2 stops
American Airlines Logo
11:05 am - 11:54 am
LIS
-
JAC
31h 49m
2 stops
$1,020American Airlines
Tue, Sep 15 - Tue, Oct 20

KLM flights from Idaho to Portugal

Our best KLM deals on Idaho to Portugal flight tickets
KLM
Apr 25
BOI3:44 pmBoise Air Term. Gowen Fld
20h 01m
2 stops
LIS6:45 pmLisbon Humberto Delgado
May 2
LIS5:00 amLisbon Humberto Delgado
18h 14m
2 stops
BOI4:14 pmBoise Air Term. Gowen Fld
$710
KLM
Apr 25
BOI3:44 pmBoise Air Term. Gowen Fld
20h 01m
2 stops
LIS6:45 pmLisbon Humberto Delgado
May 2
LIS5:00 amLisbon Humberto Delgado
18h 14m
2 stops
BOI4:14 pmBoise Air Term. Gowen Fld
$716
KLM
Apr 14
BOI3:44 pmBoise Air Term. Gowen Fld
20h 01m
2 stops
LIS6:45 pmLisbon Humberto Delgado
Apr 28
LIS5:00 amLisbon Humberto Delgado
22h 00m
2 stops
BOI8:00 pmBoise Air Term. Gowen Fld
$789

Delta flights from Idaho to Portugal

Our best Delta deals on Idaho to Portugal flight tickets
Delta
Apr 23
GEG7:15 amSpokane
23h 40m
2 stops
LIS2:55 pmLisbon Humberto Delgado
Apr 30
LIS5:00 amLisbon Humberto Delgado
24h 02m
2 stops
GEG9:02 pmSpokane
$720
Delta
Apr 26
BOI12:52 pmBoise Air Term. Gowen Fld
22h 53m
2 stops
LIS6:45 pmLisbon Humberto Delgado
May 3
LIS5:00 amLisbon Humberto Delgado
25h 00m
2 stops
BOI11:00 pmBoise Air Term. Gowen Fld
$725
Delta
Apr 14
BOI8:30 amBoise Air Term. Gowen Fld
23h 25m
2 stops
LIS2:55 pmLisbon Humberto Delgado
Apr 28
LIS5:00 amLisbon Humberto Delgado
24h 24m
2 stops
BOI10:24 pmBoise Air Term. Gowen Fld
$785

momondo Fare Finder

 
Customize your flight search to find flights from Idaho 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 31, 2026.
Use the filters below to find and compare flights from Idaho to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sat 4/25

3:44 pm-6:45 pm

2 stops20h 01m

Lisbon Humberto Delgado

Sat 5/2

5:00 am-4:14 pm

2 stops18h 14m

$710

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sat 4/25

3:44 pm-6:45 pm

2 stops20h 01m

Lisbon Humberto Delgado

Sat 5/2

5:00 am-4:14 pm

2 stops18h 14m

$716

SpokaneLisbon

GEG - LIS

GEGLIS

Spokane

Thu 4/23

7:15 am-2:55 pm

2 stops23h 40m

Lisbon Humberto Delgado

Thu 4/30

5:00 am-9:02 pm

2 stops24h 02m

$720

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sun 4/26

12:52 pm-6:45 pm

2 stops22h 53m

Lisbon Humberto Delgado

Sun 5/3

5:00 am-11:00 pm

2 stops25h 00m

$725

JacksonLisbon

JAC - LIS

JACLIS

Jackson Hole

Mon 4/20

1:00 pm-10:25 pm

2 stops26h 25m

Lisbon Humberto Delgado

Wed 4/29

7:45 pm-4:13 pm

2 stops27h 28m

$785

JacksonLisbon

JAC - LIS

JACLIS

Jackson Hole

Tue 4/21

1:25 pm-5:55 pm

2 stops21h 30m

Lisbon Humberto Delgado

Wed 4/29

8:55 am-12:41 pm

2 stops34h 46m

$787

SpokaneLisbon

GEG - LIS

GEGLIS

Spokane

Mon 4/13

7:00 am-10:45 pm

2 stops31h 45m

Lisbon Humberto Delgado

Fri 4/24

5:05 am-6:51 pm

2 stops21h 46m

$787

SpokaneLisbon

GEG - LIS

GEGLIS

Spokane

Thu 4/23

12:35 pm-10:45 pm

2 stops26h 10m

Lisbon Humberto Delgado

Thu 4/30

12:20 pm-2:31 pm

3 stops58h 11m

$833

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Tue 5/5

2:18 pm-5:50 pm

2 stops20h 32m

Lisbon Humberto Delgado

Sat 5/16

8:55 am-10:13 pm

2 stops20h 18m

$837

JacksonLisbon

JAC - LIS

JACLIS

Jackson Hole

Tue 9/15

4:30 pm-5:55 pm

2 stops18h 25m

Lisbon Humberto Delgado

Tue 10/20

11:05 am-11:54 am

2 stops31h 49m

$1,020

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 Idaho 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 Idaho to Portugal?

Air Canada, United Airlines, and Delta are the most popular carriers operating from Idaho to Portugal

Cheap Idaho to Portugal flight deals and tips

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

Fastest flight time

18h 50m

Direct flights

None
The fastest flight from Idaho to Portugal takes 18h 50m
There are no direct flights from Idaho to Portugal. There are no popular flight routes from Idaho to Portugal.
Search flight deals

  • When did momondo last update prices for flights from Idaho to Portugal?

    Prices for flights from Idaho to Portugal refresh daily.

  • How many operators does momondo search for flights from Idaho to Portugal?

  • How old do you have to be to fly from Idaho to Portugal?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to Portugal.

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

    The necessary travel and health documents for your Portugal trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Idaho to Portugal

Compare and see reviews for airlines that fly from Idaho to Portugal with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $549Free CancellationRating
7.9
8,368 reviews
Search Delta flights
United AirlinesPriceFrom $618Free CancellationRating
7.4
9,527 reviews
Search United Airlines flights

Why use momondo?

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

Finding the right flight to Portugal from Idaho is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Portugal quick and easy, saving you time and money.

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

momondo does allow users to show only those flights to Portugal from Idaho which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential Idaho to Portugal flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes momondo offers price alerts on flights to Portugal from Idaho. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices 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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Find better results for your trip to Portugal

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