$43 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 3/1. 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, Mar 22 - Sun, Mar 29
Frontier Logo
12:15 pm - 2:15 pm
BOI
-
DEN
2h 00mnonstop
Frontier Logo
9:10 am - 11:20 am
DEN
-
BOI
2h 10mnonstop
$98Frontier
Thu, Mar 5 - Sun, Mar 8
Frontier Logo
12:38 pm - 2:38 pm
BOI
-
DEN
2h 00mnonstop
Frontier Logo
9:10 am - 11:20 am
DEN
-
BOI
2h 10mnonstop
$103Frontier
Sun, Mar 29 - Thu, Apr 2
Allegiant Air Logo
9:21 pm - 11:38 pm
GEG
-
LAS
2h 17mnonstop
Allegiant Air Logo
6:03 pm - 8:29 pm
LAS
-
GEG
2h 26mnonstop
$107Allegiant Air
Sun, Mar 8 - Thu, Mar 26
Allegiant Air Logo
9:12 pm - 11:33 pm
GEG
-
LAS
2h 21mnonstop
Allegiant Air Logo
6:07 pm - 8:31 pm
LAS
-
GEG
2h 24mnonstop
$113Allegiant Air
Sat, Mar 7 - Tue, Mar 10
Alaska Airlines Logo
8:30 am - 9:18 am
BOI
-
SEA
1h 48mnonstop
Alaska Airlines Logo
9:10 am - 11:40 am
SEA
-
BOI
1h 30mnonstop
$137Alaska Airlines
Sun, Mar 15 - Wed, Mar 18
Multiple Airlines Logo
9:21 pm - 11:38 pm
GEG
-
LAS
2h 17mnonstop
Multiple Airlines Logo
6:00 am - 10:47 am
LAS
-
GEG
28h 47m
1 stop
$141Multiple Airlines
Sun, Mar 15 - Wed, Mar 18
Multiple Airlines Logo
9:21 pm - 11:38 pm
GEG
-
LAS
2h 17mnonstop
Multiple Airlines Logo
6:00 am - 10:47 am
LAS
-
GEG
28h 47m
1 stop
$146Multiple Airlines
Fri, Apr 24 - Sat, May 2
Delta Logo
5:40 am - 6:28 am
BOI
-
SEA
1h 48mnonstop
Delta Logo
7:20 am - 10:01 am
SEA
-
BOI
1h 41mnonstop
$147Delta
Mon, Apr 6 - Wed, Apr 8
Alaska Airlines Logo
7:20 am - 8:25 am
BOI
-
LAS
2h 05mnonstop
Alaska Airlines Logo
5:53 pm - 11:47 pm
LAS
-
BOI
4h 54m
1 stop
$147Alaska Airlines
Fri, Apr 3 - Sun, Apr 5
Delta Logo
6:00 am - 8:20 am
BOI
-
LAS
3h 20m
1 stop
Delta Logo
6:00 am - 1:05 pm
LAS
-
BOI
6h 05m
1 stop
$157Delta
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 (9% of total searches). The next most popular destinations are Las Vegas Harry Reid Intl (9%) and Seattle/Tacoma 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 London, San José del Cabo and Vancouver.

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 Phoenix, San Diego, 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 Phoenix at $80, while the most expensive was Los Angeles, at $267.

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 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 Phoenix and cost $41. The next cheapest destinations were San Jose at $46 and Las Vegas at $51.

Good to know

Low seasonJanuary
Cheapest flight$43
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 1% 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 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.

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 8179 reviews
8.5Crew
7.2Food
8.1Boarding
7.8Entertainment
7.9Comfort
Airline reviews

Was forced to check in my small carry on, even though I informed the crew it has very fragile items inside

2.0 MediocreJaspreet, Feb 2026
SEA - SMF
Read more Delta reviews

Was forced to check in my small carry on, even though I informed the crew it has very fragile items inside

This was one of the worst flights I’ve been on in years. I upgraded to comfort and had such an uncomfortable experience. The person next to me was oversized - which I understand - however, they took up their space and mine. I could only use about 50% of my seat space to not be physically touching this person the entire flight and there was no spatial awareness. I also could not use the seat outlet because their body was obstructing it. It was very inconvenient. Their body kept touching me repeatedly during the flight and I felt very uncomfortable. To pay more for an upgraded space and then not even being able to use it was highly disappointing.

No wheel chair as requested at Atlanta arrival on first flight.

Only freetext wifi was available in flight; browsing WiFi required payment. Since the seats had no in flight entertainment, Delta should revisit this policy on this longer flight.

Only water, tea or coffee served midflight, even to comfort seating. Man next to me needed two seats and took up a portion of my seat and Delta did nothing.

The flight was great as well as the airline staff

First class and monitors weren’t working for mine & my husbands. Eventually fixed, but quite annoyed as we bought first class. Also, No foot rests.

Prior to takeoff, the pilot told us there was a possibility of not being able to land and going to Portland. Well that happened, we took off and then did 8 loops around Spokane before the pilot told us we ran out of fuel and had to go to Portland. So for a 35 minute flight we have now been on the plane for 3 hours (boarded at 6:50 am and landed in Portland at 10:30). Then, we just sat in Portland's airport with no updates of when we can start heading back. All of a sudden, our pilots and crew just left, leaving us stranded in a different city and state. We continued to sit in Portland until we finally got a new crew assigned and boarded the plane (This was from 10:30-2). We then sat on the plane for an additional hour before take off because they had to count us multiple times. We finally landed in Spokane at 3:55 PM. So a flight that should have taken at max an hour took us 10 hours and we missed the majority of the recruiting event we went for.

It was delayed but other than that it was great.

Got on the plane and sat there for an hour before departure.

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.