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Cheap flights from Idaho to Portugal from $331

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 10/20. 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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Idaho to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:00 am - 8:10 am
JAC
-
LIS
18h 10m
2 stops
United Airlines Logo
10:55 am - 9:02 pm
LIS
-
JAC
41h 07m
2 stops
$726United Airlines
Tue, Dec 1 - Thu, Dec 3
United Airlines Logo
9:40 am - 8:10 am
BOI
-
LIS
15h 30m
2 stops
United Airlines Logo
11:20 am - 9:16 pm
LIS
-
BOI
40h 56m
2 stops
$726United Airlines
Sun, Dec 6 - Wed, Dec 9
United Airlines Logo
4:03 pm - 8:10 am
GEG
-
LIS
32h 07m
2 stops
United Airlines Logo
11:20 am - 9:05 pm
LIS
-
GEG
41h 45m
2 stops
$726United Airlines
Sun, Nov 1 - Wed, Nov 11
Multiple Airlines Logo
4:25 pm - 9:20 am
JAC
-
LIS
57h 55m
2 stops
Multiple Airlines Logo
5:00 am - 9:02 pm
LIS
-
JAC
23h 02m
2 stops
$738Multiple Airlines
Fri, Nov 6 - Fri, Nov 13
United Airlines Logo
5:00 am - 9:20 am
BOI
-
LIS
21h 20m
2 stops
United Airlines Logo
10:55 am - 9:30 pm
LIS
-
BOI
40h 35m
2 stops
$770United Airlines
Wed, Oct 21 - Thu, Oct 29
Air Canada Logo
6:20 am - 6:55 am
BOI
-
LIS
17h 35m
2 stops
Air Canada Logo
11:20 am - 7:16 pm
LIS
-
BOI
38h 56m
2 stops
$775Air Canada
Wed, Dec 2 - Sat, Dec 12
Multiple Airlines Logo
4:25 pm - 10:05 am
JAC
-
LIS
35h 40m
2 stops
Multiple Airlines Logo
5:00 am - 9:02 pm
LIS
-
JAC
23h 02m
2 stops
$779Multiple Airlines
Sat, Oct 31 - Sat, Nov 7
Delta Logo
10:34 am - 5:50 pm
BOI
-
LIS
24h 16m
2 stops
Delta Logo
5:00 am - 6:33 pm
LIS
-
BOI
20h 33m
2 stops
$835Delta
Wed, Oct 14 - Sat, Oct 24
Delta Logo
8:22 am - 11:15 am
BOI
-
LIS
19h 53m
2 stops
Delta Logo
5:00 am - 6:33 pm
LIS
-
BOI
20h 33m
2 stops
$885Delta
Thu, Oct 15 - Sat, Oct 24
American Airlines Logo
3:38 pm - 3:40 pm
JAC
-
LIS
17h 02m
2 stops
American Airlines Logo
11:05 am - 12:07 pm
LIS
-
JAC
32h 02m
2 stops
$946American Airlines
Wed, Sep 2 - Thu, Sep 10

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United Airlines flights from Idaho to Portugal

Our best United Airlines deals on Idaho to Portugal flight tickets
United Airlines
Nov 1
GEG4:03 pmSpokane
32h 07m
2 stops
LIS8:10 amLisbon Humberto Delgado
Nov 11
LIS11:20 amLisbon Humberto Delgado
41h 45m
2 stops
GEG9:05 pmSpokane
$726
United Airlines
Oct 21
BOI5:00 amBoise Air Term. Gowen Fld
21h 20m
2 stops
LIS9:20 amLisbon Humberto Delgado
Oct 29
LIS10:55 amLisbon Humberto Delgado
40h 35m
2 stops
BOI9:30 pmBoise Air Term. Gowen Fld
$770
United Airlines
Oct 31
JAC4:25 pmJackson Hole
35h 40m
2 stops
LIS10:05 amLisbon Humberto Delgado
Nov 7
LIS11:20 amLisbon Humberto Delgado
40h 42m
2 stops
JAC9:02 pmJackson Hole
$776

Delta flights from Idaho to Portugal

Our best Delta deals on Idaho to Portugal flight tickets
Delta
Oct 14
BOI10:34 amBoise Air Term. Gowen Fld
24h 16m
2 stops
LIS5:50 pmLisbon Humberto Delgado
Oct 24
LIS5:00 amLisbon Humberto Delgado
20h 33m
2 stops
BOI6:33 pmBoise Air Term. Gowen Fld
$835
Delta
Oct 15
GEG7:05 amSpokane
23h 50m
2 stops
LIS2:55 pmLisbon Humberto Delgado
Oct 24
LIS5:00 amLisbon Humberto Delgado
24h 11m
2 stops
GEG9:11 pmSpokane
$885
Delta
Aug 18
GEG11:09 amSpokane
16h 06m
2 stops
LIS11:15 amLisbon Humberto Delgado
Aug 25
LIS5:00 amLisbon Humberto Delgado
24h 33m
2 stops
GEG9:33 pmSpokane
$888

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 July 10, 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

JacksonLisbon

JAC - LIS

JACLIS

Jackson Hole

Tue 12/1

7:00 am-8:10 am

2 stops18h 10m

Lisbon Humberto Delgado

Thu 12/3

10:55 am-9:02 pm

2 stops41h 07m

$726

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sun 12/6

9:40 am-8:10 am

2 stops15h 30m

Lisbon Humberto Delgado

Wed 12/9

11:20 am-9:16 pm

2 stops40h 56m

$726

SpokaneLisbon

GEG - LIS

GEGLIS

Spokane

Sun 11/1

4:03 pm-8:10 am

2 stops32h 07m

Lisbon Humberto Delgado

Wed 11/11

11:20 am-9:05 pm

2 stops41h 45m

$726

JacksonLisbon

JAC - LIS

JACLIS

Jackson Hole

Fri 11/6

4:25 pm-9:20 am

2 stops57h 55m

Lisbon Humberto Delgado

Fri 11/13

5:00 am-9:02 pm

2 stops23h 02m

$738

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Wed 10/21

5:00 am-9:20 am

2 stops21h 20m

Lisbon Humberto Delgado

Thu 10/29

10:55 am-9:30 pm

2 stops40h 35m

$770

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Wed 12/2

6:20 am-6:55 am

2 stops17h 35m

Lisbon Humberto Delgado

Sat 12/12

11:20 am-7:16 pm

2 stops38h 56m

$775

JacksonLisbon

JAC - LIS

JACLIS

Jackson Hole

Sat 10/31

4:25 pm-10:05 am

2 stops35h 40m

Lisbon Humberto Delgado

Sat 11/7

5:00 am-9:02 pm

2 stops23h 02m

$779

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Wed 10/14

10:34 am-5:50 pm

2 stops24h 16m

Lisbon Humberto Delgado

Sat 10/24

5:00 am-6:33 pm

2 stops20h 33m

$835
Quickest round-trip

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Thu 10/15

8:22 am-11:15 am

2 stops19h 53m

Lisbon Humberto Delgado

Sat 10/24

5:00 am-6:33 pm

2 stops20h 33m

$885

JacksonLisbon

JAC - LIS

JACLIS

Jackson Hole

Wed 9/2

3:38 pm-3:40 pm

2 stops17h 02m

Lisbon Humberto Delgado

Thu 9/10

11:05 am-12:07 pm

2 stops32h 02m

$946

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 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 Idaho during January instead. Flights to Portugal in January, while not as cheap as those in July, still average around $0.

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

17h 40m

Direct flights

None
The fastest flight from Idaho to Portugal takes 17h 40m
There are no direct flights from Idaho to Portugal. There are no popular flight routes from Idaho to Portugal.
Search flight deals

Frequently asked questions about flying from Idaho to Portugal

  • 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
7.8
8,458 reviews
Search Delta flights
United AirlinesPriceFrom $618Free CancellationRating
7.4
9,967 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.

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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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