$40 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 9/11. 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

Wed, Oct 21 - Thu, Oct 22
Multiple Airlines Logo
3:34 pm - 8:04 pm
GEG
-
LAS
4h 30m
1 stop
Multiple Airlines Logo
4:10 pm - 6:38 pm
LAS
-
GEG
2h 28mnonstop
$130Multiple Airlines
Thu, Aug 13 - Thu, Aug 20
Allegiant Air Logo
9:14 pm - 11:35 pm
GEG
-
LAS
2h 21mnonstop
Allegiant Air Logo
7:00 am - 9:22 am
LAS
-
GEG
2h 22mnonstop
$131Allegiant Air
Sat, Sep 26 - Wed, Sep 30
Alaska Airlines Logo
1:36 pm - 8:10 pm
GEG
-
LAS
6h 34m
1 stop
Alaska Airlines Logo
6:02 am - 11:37 am
LAS
-
GEG
5h 35m
1 stop
$137Alaska Airlines
Mon, Sep 28 - Wed, Sep 30
Frontier Logo
3:52 pm - 10:46 am
BOI
-
SFO
19h 54m
1 stop
Frontier Logo
11:42 am - 2:57 pm
SFO
-
BOI
26h 15m
1 stop
$147Frontier
Thu, Oct 1 - Sun, Oct 4
Frontier Logo
3:52 pm - 4:43 pm
BOI
-
LAS
1h 51mnonstop
Frontier Logo
12:01 pm - 2:57 pm
LAS
-
BOI
1h 56mnonstop
$156Frontier
Mon, Aug 17 - Wed, Aug 19
Alaska Airlines Logo
4:15 pm - 5:12 pm
BOI
-
LAS
1h 57mnonstop
Alaska Airlines Logo
3:11 pm - 6:09 pm
LAS
-
BOI
1h 58mnonstop
$157Alaska Airlines
Sat, Sep 5 - Tue, Sep 8
Delta Logo
5:59 pm - 6:37 pm
BOI
-
SEA
1h 38mnonstop
Delta Logo
9:00 am - 11:34 am
SEA
-
BOI
1h 34mnonstop
$157Delta
Wed, Aug 12 - Wed, Aug 19
Southwest Logo
3:30 pm - 9:00 pm
BOI
-
SEA
6h 30m
1 stop
Southwest Logo
5:55 am - 1:50 pm
SEA
-
BOI
6h 55m
1 stop
$177Southwest
Thu, Aug 13 - Sun, Aug 16
Southwest Logo
3:50 pm - 12:20 am
BOI
-
SEA
9h 30m
1 stop
Southwest Logo
6:55 am - 2:45 pm
SEA
-
BOI
6h 50m
1 stop
$182Southwest
Fri, Sep 11 - Mon, Sep 14
Delta Logo
5:59 pm - 6:41 pm
BOI
-
SEA
1h 42mnonstop
Delta Logo
7:59 pm - 10:34 pm
SEA
-
BOI
1h 35mnonstop
$187Delta
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 (11% of total searches). The next most popular destinations are Seattle/Tacoma Intl (7%) and Denver Intl (7%).

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 San Diego at $184, while the most expensive was Los Angeles, at $321.

What is the longest direct flight from Idaho?

The longest direct flight you can take from Idaho is to Honolulu, with a duration of 7h 00m. The next longest is Anchorage at 4h 35m, followed by a flight to Atlanta at 4h 02m.

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 Las Vegas and cost $58. The next cheapest destinations were San Diego at $78 and Portland at $80.

Good to know

Low season

January

Cheapest flight

$40
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 $447
Premium Economy Class flights to anywherefrom $298
Economy Class flights to anywherefrom $81