What is the cheapest airline that flies from Idaho to Lisbon Humberto Delgado?

Air Canada, Lufthansa, and United Airlines are the most popular carriers operating from Idaho to Lisbon Humberto Delgado

What airlines fly to Lisbon?

United Airlines, Delta and Air Canada are the top three most popular airlines that fly to Lisbon from Idaho according to our data. United Airlines is the first choice among our users, with 53% of people opting to fly with this airline when traveling to Lisbon. Keep in mind that there are 4 different airlines that fly to Lisbon on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Idaho to Lisbon Humberto Delgado Airport?

Prices for flights from Idaho to Lisbon Humberto Delgado Airport refresh daily.

How many operators does momondo search for flights from Idaho to Lisbon Humberto Delgado Airport?

The number of operators available for flights from Idaho to Lisbon Humberto Delgado Airport is 4 as of September 2025.

How old do you have to be to fly from Idaho to Lisbon Humberto Delgado Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to Lisbon Humberto Delgado Airport.

What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?

The travel and health documents required for your trip to Lisbon Humberto Delgado Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lisbon Humberto Delgado Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$446 Cheap Flights from Idaho to Lisbon in 2025/26

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Find the cheapest flights from Idaho to Lisbon

Round-trip

One-way

Cheap round-trip flights

5:00 am - 9:20 amBOI-LIS

22h 20m2 stops

11:25 am - 11:06 pmLIS-BOI

42h 41m2 stops

$548Air Canada

Find Deal

Tue, Mar 24 - Thu, Apr 2

8:25 am - 10:15 amBOI-LIS

18h 50m2 stops

5:00 am - 7:45 pmLIS-BOI

21h 45m2 stops

$562United Airlines

Find Deal

Tue, Nov 4 - Tue, Nov 18

1:24 pm - 5:40 pmJAC-LIS

22h 16m2 stops

11:05 am - 12:16 pmLIS-JAC

32h 11m2 stops

$591American Airlines

Find Deal

Tue, Oct 28 - Fri, Nov 7

2:40 pm - 10:50 pmJAC-LIS

25h 10m2 stops

5:00 am - 8:37 pmLIS-JAC

22h 37m2 stops

$604Lufthansa

Find Deal

Wed, Nov 5 - Wed, Nov 12

11:25 am - 9:20 amGEG-LIS

37h 55m2 stops

11:20 am - 12:46 pmLIS-GEG

33h 26m3 stops

$604Multiple Airlines

Find Deal

Tue, Jan 27 - Wed, Feb 4

6:44 am - 9:05 amBOI-LIS

19h 21m2 stops

4:10 pm - 9:18 pmLIS-BOI

36h 08m2 stops

$619Multiple Airlines

Find Deal

Tue, Dec 16 - Wed, Jan 14

7:00 am - 11:25 pmBOI-LIS

33h 25m2 stops

4:10 pm - 10:32 pmLIS-BOI

37h 22m2 stops

$657Finnair

Find Deal

Sun, Oct 19 - Mon, Nov 3

7:00 am - 11:25 pmBOI-LIS

33h 25m2 stops

4:10 pm - 10:32 pmLIS-BOI

37h 22m2 stops

$658Finnair

Find Deal

Sun, Oct 19 - Mon, Nov 3

12:19 pm - 4:05 pmJAC-LIS

20h 46m2 stops

10:55 am - 12:16 pmLIS-JAC

32h 21m2 stops

$753American Airlines

Find Deal

Thu, Oct 16 - Thu, Nov 6

12:35 pm - 10:05 pmBOI-LIS

26h 30m2 stops

5:05 am - 6:47 pmLIS-BOI

20h 42m2 stops

$904Lufthansa

Find Deal

Tue, Oct 7 - Fri, Oct 24

Lufthansa flights from Idaho to Lisbon

Our best Lufthansa deals on Idaho to Lisbon flight tickets

Lufthansa

Nov 5

JAC2:40 pmJackson Hole

25h 10m

2 stops

LIS10:50 pmLisbon Humberto Delgado

Nov 12

LIS5:00 amLisbon Humberto Delgado

22h 37m

2 stops

JAC8:37 pmJackson Hole

$604

Find similar

Lufthansa

Oct 7

BOI12:35 pmBoise Air Term. Gowen Fld

26h 30m

2 stops

LIS10:05 pmLisbon Humberto Delgado

Oct 24

LIS5:05 amLisbon Humberto Delgado

20h 42m

2 stops

BOI6:47 pmBoise Air Term. Gowen Fld

$904

Find similar

Lufthansa

Mar 21

JAC4:25 pmJackson Hole

35h 50m

2 stops

LIS10:15 amLisbon Humberto Delgado

Apr 3

LIS7:30 amLisbon Humberto Delgado

20h 32m

2 stops

JAC9:02 pmJackson Hole

$1,058

Find similar

United Airlines flights from Idaho to Lisbon

Our best United Airlines deals on Idaho to Lisbon flight tickets

United Airlines

Nov 4

BOI8:25 amBoise Air Term. Gowen Fld

18h 50m

2 stops

LIS10:15 amLisbon Humberto Delgado

Nov 18

LIS5:00 amLisbon Humberto Delgado

21h 45m

2 stops

BOI7:45 pmBoise Air Term. Gowen Fld

$562

Find similar

United Airlines

Jan 27

GEG6:53 amSpokane

17h 17m

2 stops

LIS8:10 amLisbon Humberto Delgado

Feb 4

LIS11:20 amLisbon Humberto Delgado

42h 02m

2 stops

GEG9:22 pmSpokane

$563

Find similar

United Airlines

Nov 4

BOI10:40 amBoise Air Term. Gowen Fld

16h 35m

2 stops

LIS10:15 amLisbon Humberto Delgado

Nov 18

LIS5:00 amLisbon Humberto Delgado

23h 16m

2 stops

BOI9:16 pmBoise Air Term. Gowen Fld

$569

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Tue 3/24

5:00 am-9:20 am

2 stops22h 20m

Lisbon Humberto Delgado

Thu 4/2

11:25 am-11:06 pm

2 stops42h 41m

$548

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Tue 11/4

8:25 am-10:15 am

2 stops18h 50m

Lisbon Humberto Delgado

Tue 11/18

5:00 am-7:45 pm

2 stops21h 45m

$562

JacksonLisbon

JAC - LIS

JACLIS

Jackson Hole

Tue 10/28

1:24 pm-5:40 pm

2 stops22h 16m

Lisbon Humberto Delgado

Fri 11/7

11:05 am-12:16 pm

2 stops32h 11m

$591

JacksonLisbon

JAC - LIS

JACLIS

Jackson Hole

Wed 11/5

2:40 pm-10:50 pm

2 stops25h 10m

Lisbon Humberto Delgado

Wed 11/12

5:00 am-8:37 pm

2 stops22h 37m

$604

SpokaneLisbon

GEG - LIS

GEGLIS

Spokane

Tue 1/27

11:25 am-9:20 am

2 stops37h 55m

Lisbon Humberto Delgado

Wed 2/4

11:20 am-12:46 pm

3 stops33h 26m

$604

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Tue 12/16

6:44 am-9:05 am

2 stops19h 21m

Lisbon Humberto Delgado

Wed 1/14

4:10 pm-9:18 pm

2 stops36h 08m

$619

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sun 10/19

7:00 am-11:25 pm

2 stops33h 25m

Lisbon Humberto Delgado

Mon 11/3

4:10 pm-10:32 pm

2 stops37h 22m

$657

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sun 10/19

7:00 am-11:25 pm

2 stops33h 25m

Lisbon Humberto Delgado

Mon 11/3

4:10 pm-10:32 pm

2 stops37h 22m

$658

JacksonLisbon

JAC - LIS

JACLIS

Jackson Hole

Thu 10/16

12:19 pm-4:05 pm

2 stops20h 46m

Lisbon Humberto Delgado

Thu 11/6

10:55 am-12:16 pm

2 stops32h 21m

$753

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Tue 10/7

12:35 pm-10:05 pm

2 stops26h 30m

Lisbon Humberto Delgado

Fri 10/24

5:05 am-6:47 pm

2 stops20h 42m

$904

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first

How to get the cheapest flight ticket from Idaho to Lisbon

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

Prices

Airlines

What is the cheapest month to fly to Lisbon?

In general, November is the cheapest month to fly from Idaho to Lisbon. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $710. If you are unable to visit Lisbon during the month of November, then departing from Idaho during the month February is also very affordable. Most momondo users find prices during this month for around $751.

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

Our data shows that Wednesday is the least expensive day to fly to Lisbon. Tickets to fly out on this day can be as low as $1,041. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Idaho to Lisbon for around $1,444.

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

The cheapest time of day to fly to Lisbon is in the afternoon when flights can be purchased for as low as $1,071. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $1,393 on average. Flights to Lisbon from Idaho in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You are more likely to see cheaper flights to Lisbon from Idaho when booking weeks ahead of your departure date. In general, you can expect to find flights to Lisbon for around $1,040 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Lisbon from Idaho for as low as $704 on momondo.

Cheap Idaho to Lisbon flight deals and tips

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

Direct flights	None

There are no direct flights from Idaho to Lisbon. There are no popular flight routes from Idaho to Lisbon.

Search flight deals

When did momondo last update prices for flights from Idaho to Lisbon Humberto Delgado Airport?
Prices for flights from Idaho to Lisbon Humberto Delgado Airport refresh daily.
How many operators does momondo search for flights from Idaho to Lisbon Humberto Delgado Airport?
The number of operators available for flights from Idaho to Lisbon Humberto Delgado Airport is 4 as of September 2025.
How old do you have to be to fly from Idaho to Lisbon Humberto Delgado Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to Lisbon Humberto Delgado Airport.
What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?
The travel and health documents required for your trip to Lisbon Humberto Delgado Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lisbon Humberto Delgado Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Idaho to Lisbon

Compare and see reviews for airlines that fly from Idaho to Lisbon with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $601	Free Cancellation	Rating 7.4 8,928 reviews	Search United Airlines flights
Air Canada	PriceFrom $602	Free Cancellation	Rating 7.1 10,000 reviews	Search Air Canada flights
American Airlines	PriceFrom $621	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Delta	PriceFrom $654	Free Cancellation	Rating 7.9 7,973 reviews	Search Delta flights

Sintra

Fátima

Ericeira

Nazaré

Oeiras

Setúbal

Peniche

Almada

Leiria

Tomar

Estoril

Sesimbra

Evora

Zambujeira do Mar

Torres Vedras

Batalha

Figueira da Foz

Óbidos

Comporta

Costa da Caparica

Why use momondo?

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

Finding the right flight to Lisbon 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 Lisbon quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to Lisbon from Idaho with this policy.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Lisbon from Idaho.

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

Of course. momondo tracks the price of Idaho to Lisbon flights. All you need is a valid email address and we will do the rest; it is that quick and easy.