$56 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 5/14. 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

KAYAK searches hundreds of travel sites at once for cheap international flights from Idaho

Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
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, May 13 - Sat, May 16
Alaska Airlines Logo
6:54 pm - 7:43 pm
BOI
-
SFO
1h 49mnonstop
Alaska Airlines Logo
3:05 pm - 5:43 pm
SFO
-
BOI
1h 38mnonstop
$157Alaska Airlines
Wed, Jun 10 - Wed, Jun 17
Frontier Logo
12:28 pm - 4:03 pm
GEG
-
DEN
2h 35mnonstop
Frontier Logo
10:08 am - 11:33 am
DEN
-
GEG
2h 25mnonstop
$157Frontier
Wed, Aug 5 - Mon, Aug 10
Delta Logo
6:07 pm - 10:39 pm
BOI
-
SAN
5h 32m
1 stop
Delta Logo
7:00 am - 2:22 pm
SAN
-
BOI
6h 22m
1 stop
$165Delta
Thu, Jun 4 - Tue, Jun 9
Multiple Airlines Logo
6:54 pm - 7:43 pm
BOI
-
SFO
1h 49mnonstop
Multiple Airlines Logo
6:00 am - 12:30 pm
SFO
-
BOI
5h 30m
1 stop
$169Multiple Airlines
Tue, Jun 2 - Tue, Jun 9
Multiple Airlines Logo
6:07 pm - 11:59 pm
BOI
-
DEN
5h 52m
1 stop
Multiple Airlines Logo
10:29 am - 12:30 pm
DEN
-
BOI
2h 01mnonstop
$170Multiple Airlines
Tue, Aug 11 - Mon, Aug 17
Southwest Logo
6:25 am - 7:40 am
BOI
-
SAN
2h 15mnonstop
Southwest Logo
6:30 am - 9:50 am
SAN
-
BOI
2h 20mnonstop
$173Southwest
Sat, May 23 - Mon, May 25
United Airlines Logo
7:05 pm - 7:58 pm
BOI
-
SFO
1h 53mnonstop
United Airlines Logo
8:59 pm - 11:55 pm
SFO
-
BOI
1h 56mnonstop
$176United Airlines
Thu, Jun 4 - Tue, Jun 9
Delta Logo
6:41 pm - 11:57 pm
BOI
-
SFO
6h 16m
1 stop
Delta Logo
7:23 pm - 12:09 am
SFO
-
BOI
3h 46m
1 stop
$177Delta
Wed, Aug 12 - Mon, Aug 17
Southwest Logo
3:30 pm - 4:45 pm
BOI
-
SAN
2h 15mnonstop
Southwest Logo
6:40 pm - 11:35 pm
SAN
-
BOI
3h 55m
1 stop
$177Southwest
Wed, May 20 - Wed, May 27
United Airlines Logo
4:20 pm - 10:37 pm
BOI
-
SAN
7h 17m
1 stop
United Airlines Logo
4:09 pm - 9:40 pm
SAN
-
BOI
4h 31m
1 stop
$184United 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 Seattle/Tacoma Intl (9% of total searches). The next most popular destinations are Denver 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 Vancouver, Madrid 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, 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 Los Angeles at $190, while the most expensive was Phoenix, at $299.

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 10m, 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 Las Vegas and cost $55. The next cheapest destinations were John Wayne (Santa Ana) at $67 and Denver at $78.

Good to know

Low seasonJanuary
Cheapest flight$56
Best time to beat the crowds with an average 13% 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 
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.

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 8438 reviews
8.1Boarding
7.2Food
7.9Comfort
7.8Entertainment
8.5Crew
Airline reviews

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

4.0 OkayLifia, Apr 2026
BOS - SEA
Read more Delta reviews

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

Everything was great. The only issue is unfixable. Seats are too small. 😁🤪

This wasn't my experience with Delta. It was just the Pegasus flight. Seats were very hard. Staff was kinda rough. Not very nice. Charged me for snacks. For a 4 hour flight I would've expected more.

Crew was nice, meal was good. Entertainment had to be rebooted 3 times and still did not work. Turns out there was residue on screen, it needed to be cleaned to prevent the touchscreen buttons from continuously activating. I had entertainment for the last 45 minutes of a 5 hour 45 minute flight. Really unacceptable for first class. Flight attendent indicated your cleaning solution creates this problem. Seems as if this is widely known, you should be using a different product or cleaning better. Really really disappointing which simply added to the wi fi on your planes with reliably never ever works.

The baggage belt was not updated on the Delta App and was displayed on the wrong belt board. Was not expecting this to happen.

The plan was delayed and left DC 90 minutes late. However, it showed a 20 minute delay on the delta app, then a 12 min delay. It turned out to be an hour delay. I found out where the plane was with flightaware. Stop keeping customers in the dark about what is going on.

Everything went smoothly, although the usual gripes about airline travel were still present: the boarding process is inefficient, the snack selection is limited, and so on. Since there was extra space on the flight, the gate agent rearranged many people's seats to put people on the aisles and windows, leaving the middle seats empty, as much as possible, which was pretty great.

Landed without a gate ready. Plane is extremely old and dirty.

All the amenities was wonderful, if they could keep their prices that low. I'd fly with them all the time.

Very old plane with no inflight entertainment. I purchased the internet pass and it was nearly unusable.

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.