$28 Find deals on international flights from Idaho

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 2/19. 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

Fri, Feb 27 - Sun, Mar 1
Frontier Logo
11:56 am - 1:56 pm
BOI
-
DEN
2h 00mnonstop
Frontier Logo
9:01 am - 11:11 am
DEN
-
BOI
2h 10mnonstop
$58Frontier
Thu, Feb 26 - Sun, Mar 1
Frontier Logo
12:38 pm - 2:38 pm
BOI
-
DEN
2h 00mnonstop
Frontier Logo
9:01 am - 11:11 am
DEN
-
BOI
2h 10mnonstop
$65Frontier
Sun, Mar 1 - Thu, Mar 12
Allegiant Air Logo
9:15 pm - 11:36 pm
GEG
-
LAS
2h 21mnonstop
Allegiant Air Logo
6:07 pm - 8:31 pm
LAS
-
GEG
2h 24mnonstop
$104Allegiant Air
Sun, Mar 15 - Thu, Mar 19
Allegiant Air Logo
9:21 pm - 11:38 pm
GEG
-
LAS
2h 17mnonstop
Allegiant Air Logo
6:07 pm - 8:31 pm
LAS
-
GEG
2h 24mnonstop
$106Allegiant Air
Sun, Feb 15 - Wed, Feb 18
Multiple Airlines Logo
9:17 pm - 11:38 pm
GEG
-
LAS
2h 21mnonstop
Multiple Airlines Logo
6:30 am - 11:27 am
LAS
-
GEG
28h 57m
1 stop
$127Multiple Airlines
Sat, Feb 28 - Sun, Mar 1
Alaska Airlines Logo
8:30 am - 9:18 am
BOI
-
SEA
1h 48mnonstop
Alaska Airlines Logo
8:10 pm - 10:40 pm
SEA
-
BOI
1h 30mnonstop
$129Alaska Airlines
Sun, Feb 22 - Wed, Feb 25
Multiple Airlines Logo
9:17 pm - 11:38 pm
GEG
-
LAS
2h 21mnonstop
Multiple Airlines Logo
7:00 am - 1:02 pm
LAS
-
GEG
6h 02m
1 stop
$136Multiple Airlines
Mon, Mar 9 - Thu, Mar 12
Delta Logo
5:52 am - 9:47 am
BOI
-
LAS
4h 55m
1 stop
Delta Logo
6:00 am - 1:05 pm
LAS
-
BOI
6h 05m
1 stop
$137Delta
Wed, Feb 25 - Wed, Mar 4
Delta Logo
7:30 am - 8:25 am
BOI
-
SEA
1h 55mnonstop
Delta Logo
10:40 am - 1:11 pm
SEA
-
BOI
1h 31mnonstop
$137Delta
Tue, Mar 10 - Tue, Mar 17
Alaska Airlines Logo
8:25 am - 9:32 am
BOI
-
LAS
2h 07mnonstop
Alaska Airlines Logo
7:29 pm - 10:24 pm
LAS
-
BOI
1h 55mnonstop
$162Alaska 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 Phoenix (10% of total searches). The next most popular destinations are Seattle/Tacoma Intl (8%) and Las Vegas Harry Reid 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 Puerto Vallarta, Mexico City and San José del Cabo.

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, Phoenix, San Diego, Los Angeles and Portland. On average, the cheapest of these destinations on KAYAK over the last 2 weeks for a return flight was Portland at $147, while the most expensive was Los Angeles, at $280.

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 07m, followed by a flight to Chicago at 3h 34m.

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 $51. The next cheapest destinations were Portland at $55 and Salt Lake City at $68.

Good to know

Low seasonJanuary
Cheapest flight$28
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 3% increase in price.
Flight from Boise to Denver

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

Insights shared by verified travelers who flew from Idaho to anywhere 
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 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.

Reviews of the top airline flying from Idaho to Worldwide

 
Need help choosing which airline to fly with from Idaho to Worldwide? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8123 reviews
7.2Food
7.9Comfort
8.1Boarding
7.8Entertainment
8.5Crew
Airline reviews

It was last minute due to weather - considering - it was amazing! Good smiles, friendly staff and they were making sure we knew what was going on when and where.

10.0 ExcellentZebrina, Jan 2026
LGA - CAE
Read more Delta reviews

It was last minute due to weather - considering - it was amazing! Good smiles, friendly staff and they were making sure we knew what was going on when and where.

delta last minute gave me a boarding pass for a different flight with no confirmation that they were changing it

The flight was comfortable and uneventful, which is what I desire

The service from the flight attendants were of supreme quality. They greeted and treated everyone with a wide smile. This is totally absent nowadays. Kudos to them!!!!

Excellent flight and got us around tough weather. Only issue was seat TV did not work and crew tried to reboot.

Very large passenger too space from my own seat. Arm board couldn’t be lowered because of his size. It wads very uncomfortable trip, as the flight was full couldn’t move anywhere having back pain because of the position in which I was the entire flight.

was sitting in the jet bridge for 10 minutes in -20 degree weather waiting for my bag

Outdated equipment in disrepair, wifi inoperable. Broken seats, taped air vents, generally poor condition, the 717 showed its age and lack of upkeep.

My flight out of Baton Rouge to Atlanta was delayed by a half hour. This got us into Atlanta airport 30 minutes late. I ran through the airport to get to my connecting flight. As I approached the boarding gate, I saw the boarding door was still open and a passenger was being checked in. But when I got to the gate, the boarding agent told me they had already given away my seat and there were no empty seats on that flight. So I had to take a later flight. That has never happened to me before. Very frustrating.

Connection through Atlanta was difficult. Mechanical issue on plane caused a two hour delay. New gate was a mile away.

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.