$39 Find Cheap Flights from Idaho to the United States

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Low seasonJanuary
High seasonJuly
Cheapest flight$39
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from Spokane to Los Angeles

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 
Verified travelerFlew with Hawaiian AirlinesIDA-SEAJun 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 AirlinesBOI-PDXMay 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 AirlinesBOI-BURJul 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 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 Las Vegas Harry Reid Intl Airport (LAS), with an average flight price of $141.

  • What is the cheapest day to fly to the United States?

    Based on KAYAK data, the cheapest day to fly to the United States is Wednesday where round-trip tickets can be as cheap as $391. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $551 on average.

  • What is the cheapest time of day to fly to the United States?

    The cheapest time of day to fly to the United States is generally in the afternoon, when round-trip flights cost $414 on average. Morning departures are around 2% more expensive than evening flights, on average. The most expensive time of day to fly to the United States is generally in the morning, which is peak travel time and where the average cost of a ticket is $503.

  • 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 $54 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 $159.

  • 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 July, when tickets cost $358 (return) on average. On the other hand, the most expensive months are June and May, when the average cost of round-trip tickets is $474 and $428 respectively.

  • How long is the flight to the United States?

    An average nonstop flight from Idaho to the United States takes 4h 00m, covering a distance of 1266 miles. The shortest route is Spokane (GEG) to Portland (PDX) with an average flight time of 1h 06m.

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

    Based on KAYAK flight searches, the most popular destination is Seattle (13% of total searches to the United States). The next most popular destinations are New York (8%) and Las Vegas (7%). Searches for flights to Chicago (7%), to Denver (6%) and to Dallas (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.
8.0
DeltaOverall score based on 7973 reviews
8.2Boarding
8.5Crew
7.9Entertainment
7.3Food
7.9Comfort
Airline reviews

From Atlanta to Savannah - flight connection was way to short (we weren't even late landing ) and flight was already boarding when we landed - we were told we were the last on board and so we had to gate check our bags. Once we got on the plane, there were at least seven open bag spots so that was unnecessary delay. There should be better communication between the gate agent and the crew.

6.0 GoodBrenda, Jul 2025SAV - ATL
Read more Delta reviews

From Atlanta to Savannah - flight connection was way to short (we weren't even late landing ) and flight was already boarding when we landed - we were told we were the last on board and so we had to gate check our bags. Once we got on the plane, there were at least seven open bag spots so that was unnecessary delay. There should be better communication between the gate agent and the crew.

Crew was excellent. Comfort seats not as nice as other kinds of planes.

Not a "Delta" issue, but a JFK issue: We booked a connecting flight with 3 1/2 hours between to clearn immigration and customs. Our inbound flight (BCN to JFK) was on the taxiway 45 minutes which ate into our layover time. Immigtration was insanely quick with the CBP MPC app; however, clearing TSA (again, after we were ALREADY cleared in Spain on the inbound international flight) took over 95 minutes. This left us with 10 minutes before boarding the connecting flight (JFK to SAN) to walk to the far end of Terminal 4 and try to find food. We didn't find any food that could promise to serve us in under 10 minutes so we boarded the Delta flight after coming off a plance and an 8-hour flight knowing that we wouldn't be served any food on the next 5 1/2 hour flight. I feel like Delta needs to put pressure on the JFK TSA to open more screening stations (by our count, we saw only 5 scanners open and a line of - as we said - over 90 minutes. The insult is that we WERE ALREADY SCREENED through TSA, but as you come off one flight into the USA, you have to go through the whole process again. It seems like if you have a connecting flight, there should be a way to pass through immigration and customs without needing to return through TSA.

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

There are 4 flights in consecutive gates with about the same departure time. Two flights were boarding at the same time. One was delayed or boarding would be happening at the same time. I am not sure what Delta and LAX need to do to have a better layout at the end of Terminal 2

Flight was an hour late, who knows why. It was OK, nothing outstanding.

Only not having an assigned seat was an issue. Rest was great

There was a security issue at the airport and we were unable to land. We circled endlessly and then landed at another airfield for fuel. We then circled the airport again, almost landed but didn’t fully touch down before circling again. I am thankful to the crew for keeping us safe- the issue was the airline and staff at the airport getting us seats on our connecting flights. That part was hours of searching for someone and getting in double my steps.

Boarding was organised and relaxed. Crew were fantastic! Seats were lacking padding causing butt pain and stiffness.

I like for how they process during check in. It was very smoothly.

Book cheap flights from Idaho to the United States

Recent round-trip flight deals

8/24Sun
nonstopAllegiant Air
2h 23mGEG-LAS
8/28Thu
nonstopAllegiant Air
2h 28mLAS-GEG
$78
8/29Fri
nonstopAllegiant Air
2h 39mGEG-LAX
9/1Mon
nonstopAllegiant Air
2h 35mLAX-GEG
$78
10/17Fri
nonstopSpirit Airlines
1h 51mBOI-LAS
10/18Sat
nonstopSpirit Airlines
1h 51mLAS-BOI
$94
8/1Fri
nonstopSpirit Airlines
1h 51mBOI-LAS
8/14Thu
nonstopSpirit Airlines
1h 53mLAS-BOI
$96
7/24Thu
nonstopFrontier
2h 00mBOI-DEN
7/27Sun
nonstopFrontier
1h 56mDEN-BOI
$100
7/24Thu
nonstopFrontier
2h 00mBOI-DEN
7/27Sun
nonstopFrontier
1h 56mDEN-BOI
$104
8/30Sat
nonstopDelta
1h 44mBOI-SEA
9/3Wed
nonstopDelta
1h 34mSEA-BOI
$117
8/1Fri
1 stop
13h 05mGEG-LAS
8/10Sun
nonstop
2h 23mLAS-GEG
$126
8/15Fri
nonstop
2h 39mGEG-LAX
8/20Wed
1 stop
15h 05mLAX-GEG
$126
9/13Sat
nonstopDelta
1h 51mBOI-SEA
9/15Mon
nonstopDelta
1h 43mSEA-BOI
$137

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Recent one-way flight deals

8/25Mon
nonstopAllegiant Air
2h 39mGEG-LAX
$39
8/15Fri
nonstopAllegiant Air
2h 39mGEG-LAX
$43
8/29Fri
nonstopSpirit Airlines
1h 50mBOI-LAS
$46
10/18Sat
nonstopSpirit Airlines
1h 51mBOI-LAS
$48
9/19Fri
nonstopFrontier
1h 56mBOI-DEN
$65
10/7Tue
nonstopHawaiian Airlines
2h 01mBOI-LAS
$65
10/30Thu
nonstopFrontier
2h 00mBOI-DEN
$66
11/5Wed
nonstopHawaiian Airlines
1h 56mBOI-LAS
$68
9/10Wed
nonstopDelta
1h 41mBOI-SEA
$79
9/1Mon
1 stopDelta
4h 49mGEG-LAS
$79

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Last minute flights from Idaho to the United States

Last minute flight, train and bus deals

7/6Sun
nonstopFrontier
2h 00mBOI-DEN
7/13Sun
nonstopFrontier
1h 56mDEN-BOI
$136
7/4Fri
nonstopAllegiant Air
2h 39mGEG-LAX
7/7Mon
nonstopAllegiant Air
2h 35mLAX-GEG
$148
7/4Fri
nonstopUnited Airlines
3h 38mGEG-ORD
7/8Tue
multi-stopUnited Airlines
8h 28mORD-GEG
$265
7/4Fri
multi-stopSouthwest
8h 25mGEG-ORD
7/8Tue
multi-stopSouthwest
6h 10mORD-GEG
$275
7/4Fri
nonstopUnited Airlines
3h 38mGEG-ORD
7/8Tue
nonstopUnited Airlines
4h 21mORD-GEG
$289
7/2Wed
multi-stopDelta
5h 43mBOI-ORD
7/16Wed
multi-stopDelta
9h 29mORD-BOI
$296
7/2Wed
multi-stopDelta
6h 27mGEG-ORD
7/6Sun
multi-stopDelta
6h 28mORD-GEG
$302
7/4Fri
multi-stop
5h 43mGEG-LAS
7/6Sun
nonstop
2h 23mLAS-GEG
$308
7/3Thu
multi-stop
26h 43mGEG-LAS
7/6Sun
nonstop
2h 23mLAS-GEG
$317
7/4Fri
multi-stopSouthwest
5h 40mGEG-LAX
7/7Mon
multi-stopSouthwest
4h 50mLAX-GEG
$337

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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.

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