$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 2/12. 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
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

Mon, Jan 26 - Mon, Feb 2
Frontier Logo
12:07 pm - 2:07 pm
BOI
-
DEN
2h 00mnonstop
Frontier Logo
9:10 am - 11:12 am
DEN
-
BOI
2h 02mnonstop
$86Frontier
Fri, Jan 30 - Mon, Feb 2
Frontier Logo
12:07 pm - 2:07 pm
BOI
-
DEN
2h 00mnonstop
Frontier Logo
9:10 am - 11:12 am
DEN
-
BOI
2h 02mnonstop
$96Frontier
Sun, Feb 8 - Thu, Feb 12
Allegiant Air Logo
8:58 pm - 11:18 pm
GEG
-
LAS
2h 20mnonstop
Allegiant Air Logo
6:08 pm - 8:32 pm
LAS
-
GEG
2h 24mnonstop
$101Allegiant Air
Sun, Mar 1 - Thu, Mar 5
Allegiant Air Logo
9:15 pm - 11:36 pm
GEG
-
LAS
2h 21mnonstop
Allegiant Air Logo
6:05 pm - 8:29 pm
LAS
-
GEG
2h 24mnonstop
$108Allegiant Air
Thu, Feb 26 - Thu, Mar 5
Hawaiian Airlines Logo
8:29 pm - 9:42 pm
GEG
-
SEA
1h 13mnonstop
Hawaiian Airlines Logo
10:53 pm - 11:59 pm
SEA
-
GEG
1h 06mnonstop
$108Hawaiian Airlines
Thu, Feb 5 - Sun, Feb 8
Hawaiian Airlines Logo
6:23 am - 7:15 am
BOI
-
SEA
1h 52mnonstop
Hawaiian Airlines Logo
9:36 pm - 11:59 pm
SEA
-
BOI
1h 23mnonstop
$109Hawaiian Airlines
Wed, Feb 4 - Thu, Feb 12
Multiple Airlines Logo
3:43 pm - 11:35 pm
BOI
-
DEN
7h 52m
1 stop
Multiple Airlines Logo
9:41 am - 11:51 am
DEN
-
BOI
2h 10mnonstop
$118Multiple Airlines
Sun, Feb 1 - Thu, Feb 5
Multiple Airlines Logo
8:58 pm - 11:18 pm
GEG
-
LAS
2h 20mnonstop
Multiple Airlines Logo
7:00 am - 11:38 am
LAS
-
GEG
4h 38m
1 stop
$132Multiple Airlines
Tue, Mar 10 - Tue, Mar 17
Delta Logo
6:15 pm - 11:44 pm
BOI
-
LAS
6h 29m
1 stop
Delta Logo
1:55 pm - 9:01 pm
LAS
-
BOI
6h 06m
1 stop
$137Delta
Tue, Apr 14 - Sat, Apr 18
Delta Logo
8:01 pm - 8:50 pm
BOI
-
SEA
1h 49mnonstop
Delta Logo
7:15 am - 9:56 am
SEA
-
BOI
1h 41mnonstop
$137Delta
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 Las Vegas Harry Reid Intl (9%) and Seattle/Tacoma Intl (8%).

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 Barcelona, San José and Puerto Vallarta.

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 San Diego, Phoenix, Los Angeles, Portland and Los Angeles. On average, the cheapest of these destinations on KAYAK over the last 2 weeks for a return flight was Spokane at $150, while the most expensive was Los Angeles, at $343.

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 09m, 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 $54. The next cheapest destinations were Phoenix at $62 and San Jose at $68.

Good to know

Low seasonJanuary
Cheapest flight$28
Best time to beat the crowds with an average 9% drop 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 
Learn how KAYAK collects reviews and tips from users.
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 8040 reviews
8.1Boarding
7.8Entertainment
7.2Food
8.5Crew
7.9Comfort
Airline reviews

I have diamond medallion status and usually we are in comfort plus . We were in main this time ( which was fine ) and my husband wanted wine . I have at least 10 vouchers for drinks that are good for this year and next! The attendant would not take the picture of the voucher as proof and never came back to check as She asked me to pull it up on delta Wi-Fi. Instead my husband just used his Amex to buy the wine . Disappointing!!!

10.0 ExcellentAnne, Jan 2026
MCO - DTW
Read more Delta reviews

I have diamond medallion status and usually we are in comfort plus . We were in main this time ( which was fine ) and my husband wanted wine . I have at least 10 vouchers for drinks that are good for this year and next! The attendant would not take the picture of the voucher as proof and never came back to check as She asked me to pull it up on delta Wi-Fi. Instead my husband just used his Amex to buy the wine . Disappointing!!!

Food is basically Sun Chips, cookies or Cheezits. I had an exit row seat so I had plenty of room. The crew was very nice and efficient. Pilot kept us informed. Pretty good flight.

Air travel sucks. It continues to be awful for all airlines. No shame on delta alone.

It was Delta, but the flight attendants were stressful and disrespectful. I am a diamond member a travel weekly. I have not had a negative thing to share in quite some time. But this was noticeable.

Comfort Plus seat 11E seemed smaller than prior flights. The movie selection is good. Watched most of the most recent Tron movie. I'll watch the remaining part later as my movie is saved in the Delta Seatback Experience.

Flight was late from Newark to Atlanta, I asked flight attendant to please let my family of 3 out first when we landed to Atlanta because we were late for our connecting flight to Quito. She didn't and we were late for 5 minutes we couldn't board the plane and spend hours trying to get another flight with customer service for the next day.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

Late delayed flight delays boarding and delays leaving and delays on arrival too. Cramped plane no room no food.

DTW line is too long. The flights from DTW to BWI are always delayed for unknown reasons.

Delta canceled our flight and we had to scramble to find another airline to get home. Phoenix is not a delta hub so they didn’t have another plane. It would have been a red eye though Salt Lake City. Getting in at 5am. No bueno.

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 $257
Business Class flights to anywherefrom $152
Prem Econ Class flights to anywherefrom $198
Economy Class flights to anywherefrom $85