$44 Find Cheap Flights from Idaho to the United States

1 adult
1 adult, Economy, 0 bags

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Good to know

Low seasonSeptember
Cheapest flight$44
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 Spokane to Las Vegas

Flights from Idaho to the United States: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Idaho to the United States 
Learn how KAYAK collects reviews and tips from users.
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.
AllieFlew with Alaska Airlines
BOI
-
PDX
May 2025
It is a ten minute walk from tarmac to baggage claim. If you have mobility issues, it is best to ask for a wheelchair. I did not receive a message on my phone regarding which carousel by bags would be loaded on and there was NOT a centralized notification board to inform you of the carousel
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 flights from Idaho to the United States

  • How does KAYAK find such low prices on flights from Idaho to the United States?

    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 to the United States.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Idaho to the United States?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Idaho to the United States 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 to the United States?

    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 from Idaho to the United States with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Idaho to the United States?

    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 to the United States up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines fly most frequently to the United States?

    Idaho and United States are connected by different airlines. The airlines that fly that route the most regularly are Alaska Airlines (258 flights per week), Hawaiian Airlines (218 flights per week), and Delta (181 flights per week).

  • How many airports are there in the United States?

    There are 585 airports in the United States. The busiest airport is Hartsfield-Jackson Atlanta Airport (ATL), with 8% of all flights arriving there.

  • Which is the cheapest airport to fly into in the United States?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in the United States is San Diego Airport (SAN), with an average flight price of $200.

  • What is the cheapest flight to the United States?

    The cheapest ticket to the United States from Idaho found in the last 72 hours was to Las Vegas, at $51 round-trip. The most popular route is Boise (BOI) to Denver (DEN) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $87.

  • What is the cheapest month to fly from Idaho to the United States?

    The cheapest month for flights from Idaho to the United States is August, when tickets cost $258 (return) on average. On the other hand, the most expensive months are December and March, when the average cost of round-trip tickets is $523 and $465 respectively.

  • How many cities have direct flights to the United States?

    From Idaho, there are direct flights to the United States from 6 cities. The city with the most direct flights is Boise, with 1,404 direct flights each week.

  • How many direct flights to the United States are there each day?

    There are around 254 direct flights from within Idaho to the United States every day. Most flights (55%) depart in the morning.

  • How many direct flights to the United States are there each week?

    Each week there are around 1,773 direct flights from within Idaho to the United States. The most common day for departures is Friday, with 15% of flights taking off on this day.

  • How long is the flight to the United States?

    An average nonstop flight from Idaho to the United States takes 3h 55m, covering a distance of 1290 miles. The shortest route is Boise (BOI) to Salt Lake City (SLC) with an average flight time of 1h 10m.

  • How many long-haul flights are there to the United States each week?

    Each week, there are 35 medium-haul flights (3-6 hour flight duration) and 1,738 short-haul flights (up to 3 hour flight duration) to the United States. There aren't any long-haul flights (6-12 hour flight duration).

  • What are the most popular destinations in the United States?

    Based on KAYAK flight searches, the most popular destination is Las Vegas (8% of total searches to the United States). The next most popular destinations are Dallas (8%) and Denver (7%). Searches for flights to Seattle (7%), to New York (6%) and to Chicago (5%) are also popular.

Reviews of the top airline flying from Idaho to the United States

 
Need help choosing which airline to fly with from Idaho to the United States? 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 8157 reviews
7.8Entertainment
7.2Food
8.5Crew
8.1Boarding
7.9Comfort
Airline reviews

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

4.0 OkayMatthew, Feb 2026
DTW - MDW
Read more Delta reviews

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.

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

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.

Timing, quality of service, promptness and courtesy of the staff

It was last minute due to weather - considering - it was amazing! Good smiles, friendly staff and they were making sure we knew what was going on when and where.

delta last minute gave me a boarding pass for a different flight with no confirmation that they were changing it

The service from the flight attendants were of supreme quality. They greeted and treated everyone with a wide smile. This is totally absent nowadays. Kudos to them!!!!

Everything you need to know for your flight to the United States

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 the United Statesfrom $257
Business Class flights to the United Statesfrom $152
Premium Economy Class flights to the United Statesfrom $198
Economy Class flights to the United Statesfrom $51