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Find cheap flights from Idaho to Portugal from $684

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Idaho to Portugal departing on 11/12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Mon 7/1
Mon 7/8

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Good to know

Low season

January

High season

July

Cheapest flight

$684
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly with an average 30% 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 to Portugal from Idaho 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 to Portugal with an airline and back to Idaho 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 to Portugal from Idaho up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Book cheap flights from Idaho to Portugal

Recent round-trip flight deals

11/12Tue
2 stopsUnited Airlines
20h 45mBOI-LIS
11/22Fri
2 stopsUnited Airlines
19h 58mLIS-BOI
$684
10/29Tue
2 stopsAir Canada
33h 58mBOI-LIS
11/21Thu
2 stopsAir Canada
43h 06mLIS-BOI
$691
10/27Sun
2 stopsAir Canada
20h 32mBOI-LIS
11/12Tue
2 stopsAir Canada
37h 57mLIS-BOI
$698
8/13Tue
2 stopsAmerican Airlines
21h 21mBOI-LIS
8/20Tue
2 stopsAmerican Airlines
30h 16mLIS-BOI
$769
11/25Mon
2 stopsKLM
22h 10mBOI-LIS
12/1Sun
2 stopsKLM
32h 18mLIS-BOI
$771
11/25Mon
2 stopsDelta
25h 05mBOI-LIS
12/1Sun
2 stopsDelta
25h 29mLIS-BOI
$781
7/22Mon
2 stopsDelta
19h 20mBOI-LIS
10/5Sat
2 stopsDelta
22h 17mLIS-BOI
$814
7/13Sat
2 stopsAmerican Airlines
25h 14mBOI-LIS
7/22Mon
2 stopsAmerican Airlines
19h 30mLIS-BOI
$889
7/22Mon
3 stops
30h 15mBOI-LIS
10/5Sat
2 stops
16h 52mLIS-BOI
$960
10/20Sun
3 stops
17h 31mBOI-LIS
11/8Fri
2 stops
30h 00mLIS-BOI
$1,022

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Recent one-way flight deals

8/22Thu
2 stops
25h 56mBOI-LIS
$704
7/9Tue
2 stops
23h 06mGEG-LIS
$762
8/22Thu
3 stopsAir Canada
17h 35mBOI-LIS
$2,147
7/9Tue
3 stopsAir Canada
18h 55mGEG-LIS
$4,913

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Last minute flights from Idaho to Portugal

Last minute flight, train and bus deals

6/5Wed
multi-stop
24h 03mBOI-LIS
6/12Wed
multi-stop
20h 00mLIS-BOI
$1,611
6/5Wed
multi-stop
17h 48mBOI-LIS
6/12Wed
multi-stop
29h 47mLIS-BOI
$5,398
6/5Wed
multi-stop
17h 25mBOI-LIS
6/12Wed
multi-stop
29h 47mLIS-BOI
$17,595

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Flights to Portugal

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