$39 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 4/2. 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

Thu, Apr 9 - Thu, Apr 16
Frontier Logo
12:03 pm - 2:06 pm
BOI
-
DEN
2h 03mnonstop
Frontier Logo
9:10 am - 11:08 am
DEN
-
BOI
1h 58mnonstop
$79Frontier
Thu, Apr 9 - Thu, Apr 16
Frontier Logo
12:03 pm - 2:06 pm
BOI
-
DEN
2h 03mnonstop
Frontier Logo
9:10 am - 11:08 am
DEN
-
BOI
1h 58mnonstop
$99Frontier
Sat, May 2 - Sat, May 9
Alaska Airlines Logo
6:00 am - 6:40 am
BOI
-
SEA
1h 40mnonstop
Alaska Airlines Logo
11:22 am - 1:52 pm
SEA
-
BOI
1h 30mnonstop
$115Alaska Airlines
Thu, May 7 - Mon, May 11
Delta Logo
9:16 pm - 10:05 pm
BOI
-
SEA
1h 49mnonstop
Delta Logo
7:35 pm - 10:13 pm
SEA
-
BOI
1h 38mnonstop
$119Delta
Thu, Apr 16 - Sun, Apr 19
Delta Logo
11:25 am - 12:50 pm
GEG
-
SEA
1h 25mnonstop
Delta Logo
7:50 pm - 9:02 pm
SEA
-
GEG
1h 12mnonstop
$119Delta
Fri, Apr 10 - Fri, Apr 17
Alaska Airlines Logo
6:00 am - 6:43 am
BOI
-
SEA
1h 43mnonstop
Alaska Airlines Logo
1:03 pm - 3:29 pm
SEA
-
BOI
1h 26mnonstop
$137Alaska Airlines
Sat, Apr 18 - Thu, Apr 23
Multiple Airlines Logo
7:31 pm - 11:57 pm
GEG
-
LAS
4h 26m
1 stop
Multiple Airlines Logo
6:03 pm - 8:29 pm
LAS
-
GEG
2h 26mnonstop
$143Multiple Airlines
Thu, Apr 9 - Thu, Apr 16
Allegiant Air Logo
9:19 pm - 11:35 pm
GEG
-
LAS
2h 16mnonstop
Allegiant Air Logo
6:03 pm - 8:29 pm
LAS
-
GEG
2h 26mnonstop
$147Allegiant Air
Thu, Jul 16 - Sun, Jul 19
Allegiant Air Logo
8:51 pm - 11:07 pm
GEG
-
LAS
2h 16mnonstop
Allegiant Air Logo
5:39 pm - 8:01 pm
LAS
-
GEG
2h 22mnonstop
$150Allegiant Air
Thu, Apr 16 - Wed, Apr 22
Multiple Airlines Logo
9:19 pm - 11:35 pm
GEG
-
LAS
2h 16mnonstop
Multiple Airlines Logo
7:00 am - 11:46 am
LAS
-
GEG
4h 46m
1 stop
$151Multiple 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 (8% of total searches). The next most popular destinations are Las Vegas Harry Reid Intl (7%) and Denver 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 San José del Cabo, Guadalajara and Tokyo.

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 San Diego at $207, while the most expensive was Phoenix, at $283.

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 3h 59m, 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 Santa Ana and cost $56. The next cheapest destinations were San Diego at $63 and Las Vegas at $68.

Good to know

Low seasonJanuary
Cheapest flight$39
Best time to beat the crowds with an average 12% 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 
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 8292 reviews
7.8Entertainment
8.5Crew
8.1Boarding
7.9Comfort
7.2Food
Airline reviews

NEVER MADE THE FLIGHT BECAUSE DELTA SAID THEY CAN NOT

2.0 MediocreANTHONY, Mar 2026
SLC - HNL
Read more Delta reviews

NEVER MADE THE FLIGHT BECAUSE DELTA SAID THEY CAN NOT

THEY FAILED ME AND I NEVER GOT ON THE FLIGHT BECAUSE IT WAS SO DELAYED! I ENDED UP HAVING TO PAY OUT OF POCKET FOR A HOTEL AND STAY IN NASHVILLE TO CATCH A FLIGHT FOR THE FOLLOWING DAY. DELTA IS POOR CUSTOMER SERVICE>

8 hours late and the plane smelled like urine, that smell in the morning when your child wet the bed in the night.

My flight was canceled on Sunday. Rebooking took three hours. Had to pay for accommodations another night. New flight was delayed for 5 hours, all that was sent was a 12 dollar food voucher, which doesn’t tell you how to use it. Then when we landed we had to sit on the plane for an hour before we could get off.

Miserable. This entire round trip was miserable. I booked evening flights to and from Detroit on consecutive days that should have had me at my destination by 10:30. Instead I arrived after 3am on my flight to Detroit and after midnight on my return. Multiple unforced errors like awaiting bags to get put on the plane for almost an hour in Detroit and a 20 minute delay to pull up to the gate in Atlanta has me rethinking my assumption that delta is the best and most reliable airline

Perhaps when you’re sitting in 1st class and the crew closes the bathroom for the pilots, there could be a notification other than holding your hands up as a blockade when you get there and you’re told the restrooms are closed please turn around … especially at night when visibility is poor and you’re met by a flight attendants with their arms up

First class is comfortable. Enjoyed a movie and was able to relax compared to coach.

Loved flying First Class. Very comfortable. The seat was amazing. Enjoyed a movie and was able to relax so much better than in coach.

We landed and sat on the tarmac for 45 minutes because they only have one gate at the airport and there was another plane running late so we had to wait

The WiFi was not working. That made for a long flight.

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.