$36 Find deals on international flights from Idaho - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Idaho to Worldwide departing on 9/10. 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
1 adult, Economy, 0 bags

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Flight Deals

Book Cheap International Flights Deals from Idaho

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Idaho that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip international flight deals from Idaho

Sun, Sep 6 - Thu, Sep 10
Frontier Logo
12:24 pm - 2:30 pm
BOI
-
DEN
2h 06mnonstop
Frontier Logo
6:57 pm - 2:57 pm
DEN
-
BOI
20h 00m
2 stops
$174Frontier
Sat, Sep 19 - Sat, Sep 19
Alaska Airlines Logo
6:00 am - 7:52 pm
GEG
-
SEA
13h 52m
1 stop
Alaska Airlines Logo
10:55 pm - 11:59 pm
SEA
-
GEG
1h 04mnonstop
$174Alaska Airlines
Thu, Aug 13 - Sun, Aug 16
Frontier Logo
1:24 pm - 3:30 pm
BOI
-
DEN
2h 06mnonstop
Frontier Logo
10:29 am - 12:29 pm
DEN
-
BOI
2h 00mnonstop
$177Frontier
Thu, Aug 13 - Sat, Aug 15
Multiple Airlines Logo
1:24 pm - 3:30 pm
BOI
-
DEN
2h 06mnonstop
Multiple Airlines Logo
6:02 am - 12:47 pm
DEN
-
BOI
6h 45m
1 stop
$178Multiple Airlines
Tue, Aug 25 - Wed, Aug 26
Southwest Logo
2:25 pm - 4:20 pm
BOI
-
DEN
1h 55mnonstop
Southwest Logo
9:05 am - 10:55 am
DEN
-
BOI
1h 50mnonstop
$189Southwest
Sat, Aug 22 - Tue, Sep 1
Delta Logo
4:00 pm - 5:24 pm
BOI
-
LAX
2h 24mnonstop
Delta Logo
7:58 pm - 11:00 pm
LAX
-
BOI
2h 02mnonstop
$197Delta
Wed, Sep 16 - Sat, Sep 19
Delta Logo
2:11 pm - 11:42 pm
BOI
-
LGA
7h 31m
1 stop
Delta Logo
6:00 am - 1:29 pm
LGA
-
BOI
9h 29m
1 stop
$197Delta
Mon, Aug 24 - Mon, Aug 31
Southwest Logo
3:50 pm - 12:40 am
BOI
-
SEA
9h 50m
2 stops
Southwest Logo
5:00 am - 2:15 pm
SEA
-
BOI
8h 15m
2 stops
$204Southwest
Sat, Aug 22 - Sat, Aug 29
American Airlines Logo
5:19 pm - 6:00 am
BOI
-
JFK
10h 41m
1 stop
American Airlines Logo
7:15 am - 4:49 pm
JFK
-
BOI
11h 34m
1 stop
$206American Airlines
Thu, Jul 30 - Thu, Aug 13
American Airlines Logo
1:57 pm - 12:51 am
BOI
-
ORD
9h 54m
1 stop
American Airlines Logo
11:39 am - 2:29 pm
ORD
-
BOI
3h 50mnonstop
$344American Airlines
Booking Insights

KAYAK's insights & trends for flights from Idaho

Get data-powered insights and trends into flights from Idaho to help you find the cheapest flights, the best time to fly and much more.

Which are the most popular places to fly to from Idaho?

The domestic destinations KAYAK users have most searched for when searching for flights from Idaho.

Based on KAYAK flight searches, the most popular place to fly from Idaho is New York (10% of total searches). The next most popular destinations are Seattle/Tacoma Intl (10%) and Las Vegas Harry Reid Intl (6%).

What are the most popular international flights out of Idaho?

The international destinations KAYAK users have most searched for when searching for flights from Idaho.

There are many international destinations you can fly to from Idaho. The most popular international destinations among KAYAK users are Cancún, San José del Cabo and Guadalajara.

Which cities can I fly to direct from Idaho?

There are loads of places you can fly direct to from Idaho. The most popular destinations for direct flights among KAYAK users are Chicago, San Diego, Phoenix, Los Angeles and Portland. On average, the cheapest of these destinations on KAYAK over the last 2 weeks for a return flight was Los Angeles at $166, while the most expensive was Los Angeles, at $328.

What is the longest direct flight from Idaho?

The longest direct flight you can take from Idaho is to Anchorage, with a duration of 4h 35m. The next longest is Atlanta at 4h 02m, followed by a flight to Chicago at 3h 47m.

What are the cheapest places to fly to from Idaho?

The cheapest destination for a flight from Idaho found on KAYAK in the last two weeks was Portland and cost $56. The next cheapest destinations were Las Vegas at $59 and Phoenix at $81.

Good to know

Low seasonJanuary
Cheapest flight$36
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly with an average 11% increase in price.
Flight from Boise to Las Vegas

Flights from Idaho: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew from Idaho to anywhere 
Learn how KAYAK collects reviews and tips from users.
AllisonFlew with Alaska Airlines
BOI
-
SEA
Mar 2026
Boise airport is quick to get through security and very easy to navigate, so you don’t need to give yourself as much time as you normally would at larger airports.
Verified travelerFlew with Alaska Airlines
BOI
-
SAN
Jan 2026
Since I flew First Class I really have no advice! Everything was perfect! The ticketing agents were fantastic, flew through TSA Precheck, great announcements at the gate, quick boarding. My only suggestion is to check First Class prices before committing to the very expensive baggage fees and choosing a seat fee!!!
Verified travelerFlew with Alaska Airlines
BOI
-
SFO
Feb 2026
Dont wear all your clothes its not worth the discomfort to save on a checked bag.
Verified travelerFlew with Hawaiian Airlines
IDA
-
SEA
Jun 2025
Idaho Falls is not a large airport, so it was easy to find my way around. Take a meal if you want more than a snack.
LisaFlew with Alaska Airlines
BOI
-
BUR
Jul 2024
If they ask you to check your bag at the gate because the flight is full, you get to board sooner even if you don't check ALL of your bags.

FAQs for booking Idaho to Worldwide flights

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

    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.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight 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?

    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 your destination 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?

    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 up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Idaho

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.
First Class flights to anywherefrom $236
Business Class flights to anywherefrom $397
Premium Economy Class flights to anywherefrom $298
Economy Class flights to anywherefrom $81