$44 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 3/15. 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, Feb 22 - Thu, Feb 26
Allegiant Air Logo
9:17 pm - 11:38 pm
GEG
-
LAS
2h 21mnonstop
Allegiant Air Logo
6:06 pm - 8:30 pm
LAS
-
GEG
2h 24mnonstop
$109Allegiant Air
Sun, Mar 15 - Thu, Mar 26
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
$114Allegiant Air
Wed, Mar 4 - Wed, Mar 11
Alaska Airlines Logo
6:00 pm - 6:38 pm
BOI
-
SEA
1h 38mnonstop
Alaska Airlines Logo
8:10 pm - 10:40 pm
SEA
-
BOI
1h 30mnonstop
$137Alaska Airlines
Thu, Feb 26 - Wed, Mar 4
Multiple Airlines Logo
9:15 pm - 11:36 pm
GEG
-
LAS
2h 21mnonstop
Multiple Airlines Logo
6:30 am - 11:27 am
LAS
-
GEG
28h 57m
1 stop
$145Multiple Airlines
Sun, Mar 1 - Wed, Mar 4
Multiple Airlines Logo
9:15 pm - 11:36 pm
GEG
-
LAS
2h 21mnonstop
Multiple Airlines Logo
6:30 am - 11:27 am
LAS
-
GEG
28h 57m
1 stop
$146Multiple Airlines
Sat, Feb 28 - Mon, Mar 2
Delta Logo
8:50 am - 9:46 am
BOI
-
SEA
1h 56mnonstop
Delta Logo
7:30 pm - 9:56 pm
SEA
-
BOI
1h 26mnonstop
$147Delta
Sat, Mar 7 - Tue, Mar 10
Southwest Logo
6:00 am - 6:50 am
BOI
-
LAS
1h 50mnonstop
Southwest Logo
3:40 pm - 6:30 pm
LAS
-
BOI
1h 50mnonstop
$147Southwest
Wed, Apr 22 - Wed, Apr 22
Alaska Airlines Logo
10:30 am - 7:57 pm
GEG
-
SEA
9h 27m
1 stop
Alaska Airlines Logo
10:49 pm - 11:55 pm
SEA
-
GEG
1h 06mnonstop
$151Alaska Airlines
Wed, Feb 25 - Tue, Mar 3
Southwest Logo
6:05 am - 7:00 am
BOI
-
LAS
1h 55mnonstop
Southwest Logo
9:35 am - 12:25 pm
LAS
-
BOI
1h 50mnonstop
$152Southwest
Fri, Mar 6 - Fri, Mar 13
Delta Logo
1:51 pm - 2:45 pm
BOI
-
SEA
1h 54mnonstop
Delta Logo
7:35 pm - 10:07 pm
SEA
-
BOI
1h 32mnonstop
$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 Las Vegas Harry Reid Intl (9% of total searches). The next most popular destinations are Phoenix (9%) and Dallas (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, Cancún 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 $275.

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 San Jose and cost $46. The next cheapest destinations were Las Vegas at $51 and Portland at $55.

Good to know

Low seasonJanuary
Cheapest flight$44
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from Spokane 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 
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 8159 reviews
8.5Crew
7.2Food
8.1Boarding
7.8Entertainment
7.9Comfort
Airline reviews

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.

2.0 MediocreKeenan, Feb 2026
GEG - SEA
Read more Delta reviews

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.

Second flight in a row where the entertainment system is broken. 5 hour long flight with no entertainment and flight attendants did not seem interested in resolving the matter. Very shocked to be treated this poorly considering I paid for a first class experience and have Diamond Medallion status.

They double booked seats, the gate staff changed my ticket as I was boarding she went over to the computer and changed it without telling me. She messed up an entire three row section for me and others. Other travelers were outraged but the gate staff were so rude, so condescending saying it wasn't their problem to solve. I would rate this a zero if I could. Will not fly Delta again I'll stick with United and American.

It was nt delta. It was aeromexo. Service was awful. They served a very small drink and NO snack for a 3hr and 35min flight. Then for the first 30 min of the flight is was talk and talk over head interruption the movie/ show i picked to watch.

Comfort seating was on the tight side. Maybe it was a smaller plane(?)

I was given middle seat on this flight and prior Boston to Seoul flight That is a problem for long flights, Kayak system did not give me a change to select my seats and assigned me middle seats regardless of my elevated status in Delta. This needs immediate attention.

I didn't take this flight. I changed the flight. Why am I getting surveys and notifications on flights that I change. Seems like a defect with Kayak.

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

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.