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Cheap flights from Idaho to Portugal from $379

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 1/7. 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 Idaho to Portugal

Cheap round-trip flights

Air France Logo
1:00 pm - 2:50 pmBOI-LIS
18h 50m2 stops
Air France Logo
6:30 pm - 4:06 pmLIS-BOI
28h 36m2 stops
$627Air France
Find Deal
dom, out 19 - seg, nov 3
Air France Logo
1:00 pm - 2:50 pmBOI-LIS
18h 50m2 stops
Air France Logo
6:30 pm - 4:06 pmLIS-BOI
28h 36m2 stops
$631Air France
Find Deal
dom, out 19 - seg, nov 3
Air Canada Logo
5:10 am - 9:20 amGEG-LIS
20h 10m2 stops
Air Canada Logo
11:20 am - 6:44 pmLIS-GEG
39h 24m2 stops
$641Air Canada
Find Deal
ter, nov 18 - ter, dez 2
United Airlines Logo
5:00 am - 8:10 amGEG-LIS
19h 10m2 stops
United Airlines Logo
10:50 am - 8:59 pmLIS-GEG
42h 09m2 stops
$643United Airlines
Find Deal
qua, dez 3 - dom, dez 7
United Airlines Logo
5:56 pm - 9:20 amJAC-LIS
32h 24m2 stops
United Airlines Logo
5:00 am - 3:25 pmLIS-JAC
41h 25m2 stops
$659United Airlines
Find Deal
sáb, out 18 - seg, nov 3
United Airlines Logo
7:00 am - 9:20 amJAC-LIS
19h 20m2 stops
United Airlines Logo
10:15 am - 9:02 pmLIS-JAC
17h 47m2 stops
$660United Airlines
Find Deal
sex, jan 16 - ter, jan 20
Air Canada Logo
12:45 pm - 9:20 amGEG-LIS
60h 35m2 stops
Air Canada Logo
11:20 am - 12:45 pmLIS-GEG
33h 25m2 stops
$685Air Canada
Find Deal
sáb, nov 22 - ter, dez 2
Logo
7:00 am - 1:10 pmBOI-LIS
23h 10m2 stops
Logo
7:00 am - 10:22 pmLIS-BOI
21h 22m2 stops
$734
Find Deal
sáb, out 25 - sáb, nov 1
Logo
1:33 pm - 6:25 pmBOI-LIS
21h 52m2 stops
Logo
7:00 am - 10:22 pmLIS-BOI
21h 22m2 stops
$737
Find Deal
sáb, out 18 - sáb, nov 1
Lufthansa Logo
12:35 pm - 9:50 pmGEG-LIS
25h 15m2 stops
Lufthansa Logo
5:05 am - 11:15 pmLIS-GEG
26h 10m2 stops
$784Lufthansa
Find Deal
qua, set 24 - ter, out 7

United Airlines flights from Idaho to Portugal

Our best United Airlines deals on Idaho to Portugal flight tickets
United Airlines
Dec 3
GEG5:00 amSpokane
19h 10m
2 stops
LIS8:10 amLisbon Humberto Delgado
Dec 7
LIS10:50 amLisbon Humberto Delgado
42h 09m
2 stops
GEG8:59 pmSpokane
$643
Find similar
United Airlines
Oct 18
JAC5:56 pmJackson Hole
32h 24m
2 stops
LIS9:20 amLisbon Humberto Delgado
Nov 3
LIS5:00 amLisbon Humberto Delgado
41h 25m
2 stops
JAC3:25 pmJackson Hole
$659
Find similar
United Airlines
Jan 16
JAC7:00 amJackson Hole
19h 20m
2 stops
LIS9:20 amLisbon Humberto Delgado
Jan 20
LIS10:15 amLisbon Humberto Delgado
17h 47m
2 stops
JAC9:02 pmJackson Hole
$660
Find similar

Air Canada flights from Idaho to Portugal

Our best Air Canada deals on Idaho to Portugal flight tickets
Air Canada
Nov 18
GEG5:10 amSpokane
20h 10m
2 stops
LIS9:20 amLisbon Humberto Delgado
Dec 2
LIS11:20 amLisbon Humberto Delgado
39h 24m
2 stops
GEG6:44 pmSpokane
$641
Find similar
Air Canada
Nov 22
GEG12:45 pmSpokane
60h 35m
2 stops
LIS9:20 amLisbon Humberto Delgado
Dec 2
LIS11:20 amLisbon Humberto Delgado
33h 25m
2 stops
GEG12:45 pmSpokane
$685
Find similar
Air Canada
Dec 5
BOI10:35 amBoise Air Term. Gowen Fld
39h 20m
2 stops
LIS8:55 amLisbon Humberto Delgado
Dec 13
LIS11:20 amLisbon Humberto Delgado
29h 39m
2 stops
BOI9:59 amBoise Air Term. Gowen Fld
$695
Find similar

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 agosto 7, 2025.
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

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

dom 10/19

1:00 pm-2:50 pm

2 stops18h 50m

Lisbon Humberto Delgado

seg 11/3

6:30 pm-4:06 pm

2 stops28h 36m

$627

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

dom 10/19

1:00 pm-2:50 pm

2 stops18h 50m

Lisbon Humberto Delgado

seg 11/3

6:30 pm-4:06 pm

2 stops28h 36m

$631

SpokaneLisbon

GEG - LIS

GEGLIS

Spokane

ter 11/18

5:10 am-9:20 am

2 stops20h 10m

Lisbon Humberto Delgado

ter 12/2

11:20 am-6:44 pm

2 stops39h 24m

$641

SpokaneLisbon

GEG - LIS

GEGLIS

Spokane

qua 12/3

5:00 am-8:10 am

2 stops19h 10m

Lisbon Humberto Delgado

dom 12/7

10:50 am-8:59 pm

2 stops42h 09m

$643

JacksonLisbon

JAC - LIS

JACLIS

Jackson Hole

sáb 10/18

5:56 pm-9:20 am

2 stops32h 24m

Lisbon Humberto Delgado

seg 11/3

5:00 am-3:25 pm

2 stops41h 25m

$659

JacksonLisbon

JAC - LIS

JACLIS

Jackson Hole

sex 1/16

7:00 am-9:20 am

2 stops19h 20m

Lisbon Humberto Delgado

ter 1/20

10:15 am-9:02 pm

2 stops17h 47m

$660

SpokaneLisbon

GEG - LIS

GEGLIS

Spokane

sáb 11/22

12:45 pm-9:20 am

2 stops60h 35m

Lisbon Humberto Delgado

ter 12/2

11:20 am-12:45 pm

2 stops33h 25m

$685

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

sáb 10/25

7:00 am-1:10 pm

2 stops23h 10m

Lisbon Humberto Delgado

sáb 11/1

7:00 am-10:22 pm

2 stops21h 22m

$734

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

sáb 10/18

1:33 pm-6:25 pm

2 stops21h 52m

Lisbon Humberto Delgado

sáb 11/1

7:00 am-10:22 pm

2 stops21h 22m

$737

SpokaneLisbon

GEG - LIS

GEGLIS

Spokane

qua 9/24

12:35 pm-9:50 pm

2 stops25h 15m

Lisbon Humberto Delgado

ter 10/7

5:05 am-11:15 pm

2 stops26h 10m

$784

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 month to fly to Portugal?

The cheapest month to fly to Portugal from Idaho is in November. Flight prices, which tend to average around $715, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, then book flights to Portugal from Idaho during February instead. Flights to Portugal in February, while not as cheap as those in November, still average around $726.

What is the cheapest day to depart on your flight to Portugal?

According to our data, Wednesday is the cheapest day to fly to Portugal from Idaho. The lowest ticket price found for a Wednesday departure recently was $1,041. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Portugal is Saturday, with ticket prices averaging around $1,444.

What is the cheapest time of day to depart on your flight to Portugal?

Our most recent data shows that the best time of day to fly to Portugal is in the afternoon. Flights from Idaho to Portugal during this time can be as low as $1,071. In the evening is when there is more demand to fly to Portugal, so prices are often more expensive at around $1,393 per ticket.

How far in advance should I book a flight to Portugal?

You are more likely to see cheaper flights to Portugal from Idaho when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $1,041 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from Idaho for as low as $722 on momondo.

Cheap Idaho to Portugal flight deals and tips

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

Best Price Found

$379

Fastest flight time

16h 25m

Direct flights

None

Airports in Portugal

1 airport
The best one-way flight to Portugal from Idaho in the past 72 hours is $379. The best round-trip flight deal from Idaho to Portugal found on momondo in the last 72 hours is $627.
The fastest flight from Idaho to Portugal takes 16h 25m
There are no direct flights from Idaho to Portugal. Popular non-direct routes for this connection are Spokane Airport - Lisbon Humberto Delgado Airport, Boise Air Term. Gowen Fld Airport - Lisbon Humberto Delgado Airport and Jackson Hole Airport - Lisbon Humberto Delgado Airport.
There is 1 airport near Portugal: Lisbon Humberto Delgado (LIS)
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
United AirlinesPriceFrom $601Free CancellationRating
7.4
8,917 reviews
Search United Airlines flights
Air CanadaPriceFrom $602Free CancellationRating
7.1
9,893 reviews
Search Air Canada flights
American AirlinesPriceFrom $621Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $654Free CancellationRating
8.0
7,985 reviews
Search Delta 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

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Find better results for your trip to Portugal

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