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

United Airlines, Air Canada, and Delta 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 November 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.

$335 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

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:15 am - 8:55 amBOI-LIS

17h 40m2 stops

11:20 am - 6:07 pmLIS-BOI

37h 47m2 stops

$489Air Canada

Find Deal

Sat, Jan 24 - Mon, Feb 2

5:00 am - 8:10 amGEG-LIS

19h 10m2 stops

11:20 am - 9:22 pmLIS-GEG

42h 02m2 stops

$493United Airlines

Find Deal

Tue, Jan 27 - Wed, Feb 4

8:50 am - 11:20 amBOI-LIS

19h 30m2 stops

5:00 am - 8:13 pmLIS-BOI

22h 13m2 stops

$499Delta

Find Deal

Thu, Mar 5 - Mon, Mar 30

8:15 am - 8:55 amBOI-LIS

17h 40m3 stops

11:20 am - 11:25 amLIS-BOI

31h 05m2 stops

$518Multiple Airlines

Find Deal

Sat, Jan 24 - Mon, Feb 2

12:30 pm - 11:30 pmGEG-LIS

28h 00m2 stops

7:25 am - 8:56 pmLIS-GEG

21h 31m2 stops

$569Lufthansa

Find Deal

Wed, Mar 18 - Wed, Apr 15

10:35 am - 10:15 amBOI-LIS

40h 40m3 stops

11:00 am - 10:59 pmLIS-BOI

18h 59m2 stops

$593Multiple Airlines

Find Deal

Mon, Dec 8 - Wed, Dec 24

5:45 am - 11:20 amGEG-LIS

22h 35m2 stops

10:40 am - 11:16 pmLIS-GEG

19h 36m2 stops

$650Delta

Find Deal

Fri, Mar 13 - Thu, Mar 26

7:02 am - 10:45 pmGEG-LIS

31h 43m2 stops

2:30 pm - 11:38 pmLIS-GEG

41h 08m2 stops

$750Lufthansa

Find Deal

Sun, Apr 26 - Mon, Jun 1

1:40 pm - 9:50 pmGEG-LIS

25h 10m2 stops

7:00 am - 12:59 pmLIS-GEG

36h 59m2 stops

$830American Airlines

Find Deal

Wed, Mar 11 - Thu, Mar 26

1:40 pm - 6:05 pmGEG-LIS

45h 25m2 stops

7:00 am - 12:59 pmLIS-GEG

36h 59m2 stops

$847American Airlines

Find Deal

Sat, Mar 14 - Thu, Mar 26

Air Canada flights from Idaho to Lisbon

Our best Air Canada deals on Idaho to Lisbon flight tickets

Air Canada

Jan 24

BOI8:15 amBoise Air Term. Gowen Fld

17h 40m

2 stops

LIS8:55 amLisbon Humberto Delgado

Feb 2

LIS11:20 amLisbon Humberto Delgado

33h 15m

2 stops

BOI1:35 pmBoise Air Term. Gowen Fld

$489

Find similar

Air Canada

Apr 29

GEG7:10 amSpokane

18h 10m

2 stops

LIS9:20 amLisbon Humberto Delgado

May 29

LIS12:55 pmLisbon Humberto Delgado

40h 50m

2 stops

GEG9:45 pmSpokane

$776

Find similar

Air Canada

May 1

GEG12:30 pmSpokane

36h 50m

2 stops

LIS9:20 amLisbon Humberto Delgado

May 28

LIS11:25 amLisbon Humberto Delgado

39h 09m

2 stops

GEG6:34 pmSpokane

$786

Find similar

United Airlines flights from Idaho to Lisbon

Our best United Airlines deals on Idaho to Lisbon flight tickets

United Airlines

Jan 27

GEG5:00 amSpokane

19h 10m

2 stops

LIS8:10 amLisbon Humberto Delgado

Feb 4

LIS11:20 amLisbon Humberto Delgado

42h 02m

2 stops

GEG9:22 pmSpokane

$493

Find similar

United Airlines

Dec 5

JAC7:00 amJackson Hole

19h 20m

2 stops

LIS9:20 amLisbon Humberto Delgado

Dec 9

LIS5:00 amLisbon Humberto Delgado

22h 37m

2 stops

JAC8:37 pmJackson Hole

$498

Find similar

United Airlines

Dec 8

BOI2:49 pmBoise Air Term. Gowen Fld

36h 26m

2 stops

LIS10:15 amLisbon Humberto Delgado

Dec 16

LIS11:20 amLisbon Humberto Delgado

54h 19m

2 stops

BOI10:39 amBoise Air Term. Gowen Fld

$503

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sat 1/24

8:15 am-8:55 am

2 stops17h 40m

Lisbon Humberto Delgado

Mon 2/2

11:20 am-6:07 pm

2 stops37h 47m

$489

SpokaneLisbon

GEG - LIS

GEGLIS

Spokane

Tue 1/27

5:00 am-8:10 am

2 stops19h 10m

Lisbon Humberto Delgado

Wed 2/4

11:20 am-9:22 pm

2 stops42h 02m

$493

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Thu 3/5

8:50 am-11:20 am

2 stops19h 30m

Lisbon Humberto Delgado

Mon 3/30

5:00 am-8:13 pm

2 stops22h 13m

$499

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Sat 1/24

8:15 am-8:55 am

3 stops17h 40m

Lisbon Humberto Delgado

Mon 2/2

11:20 am-11:25 am

2 stops31h 05m

$518

SpokaneLisbon

GEG - LIS

GEGLIS

Spokane

Wed 3/18

12:30 pm-11:30 pm

2 stops28h 00m

Lisbon Humberto Delgado

Wed 4/15

7:25 am-8:56 pm

2 stops21h 31m

$569

BoiseLisbon

BOI - LIS

BOILIS

Boise Air Term. Gowen Fld

Mon 12/8

10:35 am-10:15 am

3 stops40h 40m

Lisbon Humberto Delgado

Wed 12/24

11:00 am-10:59 pm

2 stops18h 59m

$593

SpokaneLisbon

GEG - LIS

GEGLIS

Spokane

Fri 3/13

5:45 am-11:20 am

2 stops22h 35m

Lisbon Humberto Delgado

Thu 3/26

10:40 am-11:16 pm

2 stops19h 36m

$650

SpokaneLisbon

GEG - LIS

GEGLIS

Spokane

Sun 4/26

7:02 am-10:45 pm

2 stops31h 43m

Lisbon Humberto Delgado

Mon 6/1

2:30 pm-11:38 pm

2 stops41h 08m

$750

SpokaneLisbon

GEG - LIS

GEGLIS

Spokane

Wed 3/11

1:40 pm-9:50 pm

2 stops25h 10m

Lisbon Humberto Delgado

Thu 3/26

7:00 am-12:59 pm

2 stops36h 59m

$830

SpokaneLisbon

GEG - LIS

GEGLIS

Spokane

Sat 3/14

1:40 pm-6:05 pm

2 stops45h 25m

Lisbon Humberto Delgado

Thu 3/26

7:00 am-12:59 pm

2 stops36h 59m

$847

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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, December 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 $631. If you are unable to visit Lisbon during the month of December, then departing from Idaho during the month November is also very affordable. Most momondo users find prices during this month for around $649.

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.

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 November 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 9,011 reviews	Search United Airlines flights
Air Canada	PriceFrom $602	Free Cancellation	Rating 7.1 10,429 reviews	Search Air Canada flights
American Airlines	PriceFrom $621	Free Cancellation	Rating 7.2 11,047 reviews	Search American Airlines flights
Delta	PriceFrom $654	Free Cancellation	Rating 7.9 8,004 reviews	Search Delta flights

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Ericeira

Nazaré

Oeiras

Setúbal

Peniche

Estoril

Leiria

Sesimbra

Tomar

Almada

Evora

Zambujeira do Mar

Figueira da Foz

Batalha

Óbidos

Torres Vedras

Comporta

Sines

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.