$45 Find Cheap Flights from Idaho Falls to the United States - Compare and Save

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Cheap Flights from Idaho Falls to the United States

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
New York
Newark1 stop$381
Los Angeles
Los Angeles1 stop$180
Las Vegas
Las Vegasnonstop$64
San Francisco
San Francisco1 stop$160
Chicago
Chicago1 stop$343
Miami
Miami1 stop$361
Boston
Boston1 stop$394
Fort Lauderdale
Fort Lauderdale1 stop$399
Denver
Denver2 stops$274
Seattle
Seattle1 stop$177
Atlanta
Atlanta1 stop$386
Dallas
Dallas1 stop$289
Tampa
Tampa1 stop$499
Houston
Houston1 stop$359
San Diego
San Diego1 stop$175
Honolulu
Honolulu1 stop$509
Philadelphia
Philadelphia1 stop$379
New York
Newark1 stop$381
Los Angeles
Los Angeles1 stop$180
Las Vegas
Las Vegasnonstop$64
San Francisco
San Francisco1 stop$160
Chicago
Chicago1 stop$343
Miami
Miami1 stop$361
Boston
Boston1 stop$394
Fort Lauderdale
Fort Lauderdale1 stop$399
Denver
Denver2 stops$274
Seattle
Seattle1 stop$177
Atlanta
Atlanta1 stop$386
Dallas
Dallas1 stop$289
Tampa
Tampa1 stop$499
Houston
Houston1 stop$359
San Diego
San Diego1 stop$175
Honolulu
Honolulu1 stop$509
Philadelphia
Philadelphia1 stop$379
Booking Insights

Price, demand and travel trends for Idaho Falls to the United States flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Are flights from Idaho Falls to the United States cheaper or more expensive than last year?

Fares from Idaho Falls to the United States are running about 6% lower than they were around this time last year, averaging $437 round-trip.

What are the cheapest fares from Idaho Falls to the United States right now?

Here are the cheapest round-trip fares from Idaho Falls to the United States on KAYAK in the last week:

• Las Vegas Harry Reid Intl (LAS) from $64
• Phoenix-Mesa Gateway (AZA) from $121
• Santa Ana J. Wayne/Orange Cnty (SNA) from $163
• San Diego (SAN) from $175
• Seattle/Tacoma Intl (SEA) from $177

What’s the cheapest month to fly from Idaho Falls to the United States?

February is the cheapest time of year to fly, with average fares of $424. Prices are highest in November, when average flight costs increase to around $500.

When is the best time to book flights from Idaho Falls to the United States?

Book your flights 26 weeks before your trip. KAYAK data collected over the past 12 months shows that booking in this window can save you around 36% compared to booking last-minute (within 2 weeks of departure).

Which airport in the United States is the cheapest to fly to from Idaho Falls?

Based on KAYAK data from the past 12 months, the cheapest airports to fly into the United States are:

• Las Vegas Harry Reid Intl (LAS) (avg. price $201)
• Phoenix-Mesa Gateway (AZA) (avg. price $241)
• Santa Ana J. Wayne/Orange Cnty (SNA) (avg. price $254)

What’s the cheapest day to fly from Idaho Falls to the United States?

Friday tends to be the cheapest day to fly from Idaho Falls to the United States, while Sunday is the most expensive. Fares run about 26% higher that day, based on the past 12 months of KAYAK data.

What's the cheapest time of day to fly from Idaho Falls to the United States?

Data from the past 12 months shows it's cheapest to fly to the United States during the night with average prices of $171. The morning is the most expensive time to fly, with average prices of $538.

Key details for Idaho Falls to the United States flights

Low season

October

Cheapest flight

$45
Beat the crowds with an average 14% drop in travelers.
The most popular month to fly with an average 11% increase in travelers.
One-way flight from Idaho Falls to Las Vegas

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

Insights shared by verified travelers who flew the route from Idaho Falls to the United States 
Verified travelerFlew with Alaska Airlines-Sep 2026
You may get bussed from plane to terminal & vis-a-versa. Just a heads up.
Verified travelerFlew with Hawaiian Airlines-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.

Your Idaho Falls to the United States flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from Idaho Falls to the United States?

    Yes. Fares from Idaho Falls to the United States are low right now. As a rule of thumb, a round-trip under $321 (cheaper than most fares this year) is a good deal, so if you spot one at or below that, it's a good time to book.

  • How much should I budget for a flight from Idaho Falls to the United States?

    Over the past 12 months, round-trip fares from Idaho Falls to the United States have ranged from $321 to $620.

  • What are the main airports serving the United States?

    The United States has 700 airports. The three busiest are Orlando (MCO) (9% of arrivals), Denver Intl (DEN) (6%) and Las Vegas Harry Reid Intl (LAS) (5%).

  • What airlines fly nonstop from Idaho Falls to the United States?

    Based on the flight schedule for the next 3 months, 5 airlines offer nonstop flights on this route:

    • United Airlines
    • American Airlines
    • Alaska Airlines
    • Delta
    • Allegiant Air

  • Where in the United States can I fly nonstop from Idaho Falls?

    You can fly nonstop from Idaho Falls to 8 destinations in the United States. Some of the most popular among KAYAK travelers include Denver, Las Vegas, Phoenix, Santa Ana and Portland.

  • Is it cheaper to fly with a layover from Idaho Falls to the United States?

    Yes, nonstop flights from Idaho Falls to the United States average $288 over the past 12 months. Flights with a layover can cost less, cheapest when connecting through Santa Ana J. Wayne/Orange Cnty (SNA), with average fares of $206.

  • How long is a flight from Idaho Falls to the United States?

    Nonstop flights take 2h 02m on average. The fastest scheduled flight takes 1h 42m, from Idaho Falls Fanning Field (IDA) to Las Vegas Harry Reid Intl (LAS).

  • Which cabin classes are available on flights from Idaho Falls to the United States?

    On flights from Idaho Falls to the United States you can book Economy Class or First Class.

  • What are some popular landmarks in the United States?

    KAYAK travelers' favorite landmarks in the United States include:

    • Times Square
    • Universal Orlando Resort
    • New York City Center
    • San Antonio River Walk

  • What are the earliest and latest flights from Idaho Falls to the United States?

    The earliest nonstop flight from Idaho Falls to the United States departs at 5:25 am and the latest departs at 10:32 pm. Nonstop flights take about 2h 02m.

Your guide to booking Idaho Falls to the United States flights

Get tips on when to book, when to fly and what to know before your trip.
  • If you can plan ahead, the sweet spot for booking your flight is 26 weeks before your trip. KAYAK data shows fares in this window are around 36% lower than last-minute bookings (made within 2 weeks of departure). Not ready to commit? Set a Price Alert and we'll let you know when prices change.
  • If your travel dates are flexible, book your trip for February when flights are typically cheapest and avoid November when prices are at their highest.
  • Flying on Friday is usually the cheapest. Flights on Sunday cost about 26% more on average, so being flexible with your travel dates could help you save.
  • If you're looking to save, Las Vegas Harry Reid Intl (LAS) is the cheapest airport to fly into from Idaho Falls. If you have onward travel, don't forget to factor in the cost of your journey by train, bus or domestic flight.
  • Start your trip in New York, which is the most popular destination in the United States. From there, it's easy to continue on to other popular destinations such as Las Vegas, Chicago and Orlando.
  • If you want the shortest trip, choose the Idaho Falls to the United States nonstop route. If you'd rather save money, the route via Santa Ana J. Wayne/Orange Cnty (SNA) is usually the cheapest.

Reviews of the top 5 airlines serving from Idaho Falls to the United States

 
Need help choosing which airline to fly with from Idaho Falls 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
Alaska AirlinesOverall score based on 13139 reviews
7.8Comfort
8.5Crew
7.0Food
7.0Entertainment
8.1Boarding
Airline reviews

Crew was fine.at check out I didn't get my debit card back.and didn't know until I was in Seattle. There was a 5.5hour delay. I didn't get to Washington til 530this morning. So now I have to get a new card and change alot of stuff.

2.0 MediocreAnonymous, Oct 2026
Read more Alaska Airlines reviews

Crew was fine.at check out I didn't get my debit card back.and didn't know until I was in Seattle. There was a 5.5hour delay. I didn't get to Washington til 530this morning. So now I have to get a new card and change alot of stuff.

There is not enough space in the cabin for bags and so I had to have my check to the last second.

Different snack. Better coordination between terminal desk and plane for boarding. Stood in jetway for 5 minutes while plane was being cleaned by ground crew.

Eva Airlines attendants were wonderful. I really enjoyed the hot meals. They always greeted me with a warm smile. I'm looking forward to flying back to the USA with them again!

Flight was cancelled which destroyed the rest of our journey.

WOuld have liked coffee or pretzels but other than that, crew and pilot and flight were great. Seat was great, too.

The flights left both airports on schedule. The flight from Idaho Falls to Seattle was a typical commuter trip. The flight from Seattle to Maui was not good: It was too long for a flight in a single-aisle plane and too cramped. I kept asking myself if I would ever visit Maui again if airlines continue to run this long flight like a typical short commuter flight. I am not looking forward to the trip home.

Flight was on time. Staff was polite and efficient. The snacks were good - only an hour and a half flight. No entertainment but didn't expect that. We brought our own things to do.

Everything smooth (including the landing) and on time. Easy. Thanks.

The boarding in Idaho Falls was terrific. The plane was a bit sad, and the snax were subpar. Mostly, I was just grossed out by the Alaska gates in Seattle. EW! Smelly and cramped and dingy!

Great overall experience and use of the Delta One lounge was amazing!

I used by Skymiles to upgrade to First so that I could comfortably work using my laptop. But WiFi was intermittent and unavailable for long periods. I feel like I wasted 70,000 miles :(

Great as one can be for a one connection 6 hour flight

The gate attendant was not clear w message on flight delays.

This flight was a first class choice and left much to be desired. Seat backs on seats were falling apart and torn. Seats actually didn't come to a "full & upright position". Pull out table was sprung. Not any significant leg room. All in all we were on an obviously older plane and felt overcharged for what we received as first class.

My husband is very tall and we generally fly Delta Comfort. We used our companion benefit, and our seats were coach and extremely uncomfortable........ horrid even

I specifically picked out right side aisle seats because my left knee sometimes needs to be stretched. But my experience this trip was that the seats were shuffled and I lost those assigned seats, resulting in me having to sit in a much less desirable position for my comfort.

Other airlines were canceling flights but Delta got us home. Crew was friendly and professional. It would have been nice to have had a little more notice about the delays because we had already arrived at the airport when the first of several delays were communicated but I understand that storm forecasting isn’t simple and we were grateful that Delta didn’t just cancel the flight.

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

On time departure and early arrival. Kind and professional service from flight crew

1 person checking us as we boarded, left gate on time, 12.30 we are told we were held for 15 mins as other flights were waiting to take off, captain due to rain … they were having a longer gap between take offs , 3pm we took off , they went land route via New Orleans in to Florida landed at 5.45pm offered coffee and a biscuit

Service was slow Flight was very loud at back of plane

There was no internet on the flight. As an executive flying during prime business hours, having internet is critical for a smooth experience. This impacted productivity and time that will need to be spent later to do the work I could have done on flight.

Terrible boarding - 4 flights boarded from the same gate. Chaos there; long ramps to the plane.

Fine except from Chicago to moline three different gate changes and flight times

The food could have been better and the entertainment could have better movies or streaming.

Read the fine print. This was my flight home. I booked my flight for the quickest way home. Had a carry-on and a personal item. Same as my outbound flight. Apparently I needed to pre-pay extra for my carry-on. When I checked in, I was told that I had to check it. I said I’ll pay for it, and was told that this wasn’t an option anymore. They said I still had to pay $50 to check my carry-on. I told them I’ll pay whatever to just carry it in as intended. I was not allowed, so eventually I paid $50 to check my carry-on under a plane that was half full, with overhead compartments that were even less full. My white carry-on suitcase was practically destroyed getting from Idaho falls to Denver to Orange County. The low price air fair was a bait and switch. Got me to the gate, made me pay extra, then didn’t even allow me to pay for a carry on. Not to mention that I paid the $8 for WiFi that didn’t work. All to get my suitcase destroyed. I don’t think I’m going to even keep my Untied mileage plus membership and card. Apparently, membership does not have its privileges for this one.

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

During landing. 2 crew members passed 3 times by my lane and didn't notice that people in front of us had their site to the furthermore reclined... That was uncomfortable and could have been dangerous.

United Airlines was fantastic, however, UnderPricer was a nightmare. I got to the airport 4 hours before my flight. We are moving to New Zealand so had quite a bit of baggage (16 checked items) and so wanted to have plenty of time to get everything taken care of properly. When I went to check in they (United) could only find a ticket for me. The 5 tickets for my children were never officially ticketed. I called Underpricer and they told me it was United's fault and United told me that Underpricer just needs to reissue the tickets, but they refused to. I asked the Underpricer agent to transfer me to his supervisor as I was not getting the help I needed. He told me the supervisor was busy but that he would call me back in 30 minutes. 30 minutes came and went with no phone call. After an hour I called Underpricer back but they would not let me talk to the person I had talked to before, just told me that he was talking with the supervisor and technical support. I called again an hour later, was told the same thing. I tried again later, with only about 30 minutes until my flight was scheduled to leave (meaning I had been at the airport for more than 3 hours with my 5 children trying to get ticketed and board the flight). Also, my husband had moved to New Zealand 3 months prior, I haven't seen him in 3 months, my children hadn't seen their dad in 3 months, we were all extremely eager to get on that flight and get to New Zealand. The situation with the tickets did not get resolved until after it was too late to check our luggage and board our flight. We were devastated. My 11 year old son was in tears at not being able to be on his way to see his dad. Thankfully we were rebooked for the next evening, but that night it felt devastating. We'd been at the airport for 4 hours waiting. My in-laws waited with me and then helped me reload all our baggage and took us home to stay with them for the night. On the newly booked flights we could not sit together - my children were spread throughout the plane. So, even though I had paid extra to select our seats after buying my seats from Underpricer only two of us were able to sit together (thankful that my 11 year old wasn't all by himself, but not happy that my 14 & 16 year old daughters were seated by strangers). I really feel that Underpricer should refund me what I paid for the seating ($120 USD). It was a very frustrating situation and I plan on never using Kayak or Underpricer ever again.

Terrible. We needed to change return flights due to an incoming hurricane. They would not refund our return flight.

The employees at Sioux Falls airport were friendly and helpful. As a veteran/retired military Allegiant allows two checked bags, one carry on bag and a seat on the plane all at no cost. The flight crew and pilots were friendly and very competent.

The check-in and flight crew employees are excellent. The flight was good and the seats were adequate.

The flights to and from Cincinnati were great at being on time for both, departures and arrivals. The planes could use some updating.

It was a dismal experience. The flight was delayed for 4 hours, and we spent hours in the plane, without air, during the summer. We were not provided with water, and the medical assistance was inadequate when it arose.

The landing the pilot was very smooth. The flight attendant was kind of rude.The boarding the plane in punta Gorda was not great made us wait out in the heat 😞

My exit seat was very comfortable Coffee was to be purchased but sodas free 😏

It was poor a four hour delay and no explanation for the delay. What’s a 35 dollars going to do. It also made me miss my car rental,

It was on time. Flight was comfortable. Staff was nice. It was the way a flight should always be.

The price was the only good thing about this flight. It was scary during takeoff when the plane tilted side to side. It made me feel very nervous as I have never had a take-off that unsmooth. There was no on-flight movie or music options and the only complimentary option was water. Other airlines offer trail mix or a caramel cookie and pop options as complimentary. This flight was a 2.5 hour flight. I understand for shorter flights not having options, but a flight 2 hours or longer should offer more complimentary options and in flight entertainment. Also the seats did not recline and for a longer flight reclining seats are a must for comfort.

The flight was delayed several times as they didn't have pilots. Then we were boarded on the plane and again waited on the tarmac for over 30-40 minutes waiting for pilots to board. The in flight entertainment was confusing at best on how to use it. It took multiple attempts to get wifi to connect and by the time it worked the flight was almost over.

The flight was delayed and gate changed so that was not fun and the flight to Dallas from LAX was very delayed on Sunday. It was just not a great experience due to the delays both ways.

Fine. No announcement for Concierge Key to board. Not a big issue just pointing it out.

Totally uninformed of the situation. Not yet sure about compensation. Highly disappointed.

Horrible. Their delay cause me to miss my connection, the the flight they rebooked was delayed over an hour because they over booked the crew. They also left my suitcase out in the rain for hours ruining items I had in the suitcase and blew off my complaint.. worst experience ever.

The flight was almost an hour delayed causing me to miss my connecting flight, then the rebooked flight was delayed a couple of hours. They also left my suitcase in the rain for hours ruining some items I had in there. They also just blew off my complaint. It was my absolute worst flight experience of all time:

Nothing available at the assigned hotel as far as brush, toothbrush, etc after forced layover with bags that departed

The delay update was very late. I had a stressful short connection and RAN through Chicago to get to the next flight, only to find the plane wasn't at the gate yet an nobody was boarding. I would not have had to run if the delay was updated earlier.

Flight was delayed because of mechanical. Could not get landing space which caused me to miss my connection. Messy and not organized.

Flight was delayed due to a steering issue with plane. The delay caused me to miss the connecting flight. The delay caused me to spend an extra 21 hours in airports and flights to get to my destination. The plane issue obviously should have been found and fixed before we even boarded. Ridiculous.

More options for your flight from Idaho Falls to the United States

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