$399 Find Cheap Flights from Idaho to Portugal

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Useful Info
Useful Info

Good to know

Low seasonJanuary
High seasonJuly
Cheapest flight$399
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly with an average 27% increase in price.
Flight from Boise to Lisbon

FAQs for booking flights from Idaho to Portugal

  • How does KAYAK find such low prices on flights from Idaho to Portugal?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Idaho to Portugal.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Idaho to Portugal?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Idaho to Portugal is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Idaho to Portugal?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Idaho to Portugal with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Idaho to Portugal?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Idaho to Portugal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest day to fly to Portugal?

    Based on KAYAK data, the cheapest day to fly to Portugal is Wednesday where round-trip tickets can be as cheap as $1,041. On the other hand, the most expensive day to fly is Saturday, where round-trip prices are $1,444 on average.

  • What is the cheapest time of day to fly to Portugal?

    The cheapest time of day to fly to Portugal is generally in the evening, when round-trip flights cost $1,071 on average. Morning departures are around 8% more expensive than evening flights, on average. The most expensive time of day to fly to Portugal is generally at night, which is peak travel time and where the average cost of a ticket is $1,393.

  • What is the cheapest month to fly from Idaho to Portugal?

    The cheapest month for flights from Idaho to Portugal is February, when tickets cost $726 (return) on average. On the other hand, the most expensive months are June and December, when the average cost of round-trip tickets is $1,453 and $1,331 respectively.

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

    To get a below average price on the flight from Idaho to Portugal, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

  • How long is the flight to Portugal?

    An average nonstop flight from Idaho to Portugal takes 22h 19m, covering a distance of 5065 miles. The shortest route is Boise (BOI) to Lisbon (LIS) with an average flight time of 17h 19m.

  • What is the most popular destination in Portugal?

    Based on KAYAK flight searches, the most popular destination is Lisbon (100% of total searches to Portugal).

Book cheap flights from Idaho to Portugal

Recent round-trip flight deals

11/4Tue
2 stopsUnited Airlines
18h 55mBOI-LIS
11/18Tue
2 stopsUnited Airlines
31h 39mLIS-BOI
$586
11/5Wed
2 stopsUnited Airlines
17h 19mBOI-LIS
11/18Tue
2 stopsUnited Airlines
18h 55mLIS-BOI
$630
11/6Thu
2 stopsAir Canada
21h 20mBOI-LIS
11/18Tue
2 stopsAir Canada
42h 55mLIS-BOI
$631
11/5Wed
2 stopsLufthansa
17h 19mBOI-LIS
11/17Mon
2 stopsLufthansa
36h 26mLIS-BOI
$642
11/6Thu
2 stopsIberia
17h 19mBOI-LIS
11/17Mon
2 stopsIberia
22h 48mLIS-BOI
$703
10/7Tue
2 stops
18h 05mBOI-LIS
10/15Wed
2 stops
21h 37mLIS-BOI
$767
7/8Tue
2 stopsAir Canada
39h 30mBOI-LIS
7/16Wed
2 stopsAir Canada
43h 06mLIS-BOI
$877
7/11Fri
2 stopsIberia
33h 09mBOI-LIS
7/18Fri
2 stopsIberia
21h 51mLIS-BOI
$965
7/11Fri
2 stopsLufthansa
28h 05mBOI-LIS
7/17Thu
2 stopsLufthansa
40h 19mLIS-BOI
$988
10/7Tue
3 stops
18h 00mBOI-LIS
10/15Wed
2 stops
29h 49mLIS-BOI
$1,146

Search by stops

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Recent one-way flight deals

10/7Tue
2 stops
21h 20mBOI-LIS
$399
11/4Tue
2 stopsAir Canada
21h 20mBOI-LIS
$468
11/6Thu
2 stopsAir Canada
20h 05mBOI-LIS
$518
10/17Fri
2 stops
26h 29mBOI-LIS
$523
11/5Wed
1 stop
19h 53mBOI-LIS
$536
8/4Mon
2 stopsAir Canada
20h 05mGEG-LIS
$583
10/7Tue
3 stopsAir Canada
18h 00mBOI-LIS
$590
10/17Fri
3 stopsAir Canada
17h 20mBOI-LIS
$592
8/4Mon
3 stopsUnited Airlines
41h 55mGEG-LIS
$597
11/5Wed
3 stopsScandinavian Airlines
24h 05mBOI-LIS
$2,719

Search by stops

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Last minute flights from Idaho to Portugal

Last minute flight, train and bus deals

6/13Fri
multi-stopUnited Airlines
18h 25mGEG-FAO
6/24Tue
multi-stopUnited Airlines
42h 16mFAO-GEG
$1,528
6/14Sat
multi-stop
18h 20mBOI-LIS
6/16Mon
multi-stop
18h 22mLIS-BOI
$1,622
6/14Sat
multi-stop
18h 20mBOI-LIS
6/16Mon
multi-stop
20h 52mLIS-BOI
$1,741
6/14Sat
multi-stop
21h 25mBOI-LIS
6/16Mon
multi-stop
20h 52mLIS-BOI
$2,038
6/15Sun
multi-stopAir Canada
17h 55mGEG-LIS
6/29Sun
multi-stopAir Canada
41h 04mLIS-GEG
$2,197
6/14Sat
multi-stop
20h 27mBOI-LIS
6/16Mon
multi-stop
32h 49mLIS-BOI
$2,197
6/15Sun
multi-stop
20h 58mGEG-LIS
6/29Sun
multi-stop
30h 01mLIS-GEG
$2,719
6/15Sun
multi-stop
20h 58mGEG-LIS
6/29Sun
multi-stop
30h 01mLIS-GEG
$2,767
6/14Sat
multi-stop
20h 27mBOI-LIS
6/16Mon
multi-stop
38h 09mLIS-BOI
$2,968
6/15Sun
multi-stop
20h 58mGEG-LIS
6/29Sun
multi-stop
30h 01mLIS-GEG
$2,968

Search by stops

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Everything you need to know for your flight to Portugal

Cabin class types available on flights to Idaho

Cabin classes available on flights to Idaho. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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