$46 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
Sort by: Cheapest
Las Vegas
1h 40mNonstop
from $78per person
Santa Ana
2h 12mNonstop
from $103per person
Phoenix
2h 03mNonstop
from $142per person
San Diego
4h 06m2 stops
from $163per person
Seattle
1h 56mNonstop
from $187per person
Dallas
2h 56mNonstop
from $212per person
Orlando
6h 50m2 stops
from $224per person
Portland
1h 41mNonstop
from $257per person
Denver
1h 42mNonstop
from $270per person
Chicago
5h 00m2 stops
from $371per person
San Antonio
4h 31m2 stops
from $379per person
Miami
6h 35m2 stops
from $390per person
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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 $78
• Santa Ana J. Wayne/Orange Cnty (SNA) from $107
• Phoenix-Mesa Gateway (AZA) from $134
• San Diego (SAN) from $163
• Seattle/Tacoma Intl (SEA) from $187

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

$46
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) (10% 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 03m 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 03m.

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 13160 reviews
7.0Entertainment
7.8Comfort
7.0Food
8.1Boarding
8.5Crew
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!

flight was hot, it was delayed and there was no wifi.

being late for poor reasons, bad chairs, being regulated to a terrible gate in LAX

As an Elevance employee, don't we get priority boarding? Also, I boarded zone 5 and could not get normal carry on in luggage space. There were many Delta employees on the flight and their bags, which were large and could only fit two bags per compartment, got preference over customers so I had to check my bag.

Everything went smoothly, WiFi connection was strong. Time to upgrade the regional planes, we are all on top of each other. No room to comfortably do anything.

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

Deplorable not to have WiFi on 5 hr cross country flight and spend thousands of dollars

We left nearly 3 hours late...so that was not a good experience. We boarded and then ended up about 1 hour stuck at the gate. Not a good experience.

It is completely insane to me that first class does not include WiFi. Also does not include lounge access. Port for phone charging did not work. The crew was absolutely lovely, and the food was excellent.

I appreciate how quickly and kindly the people at the gate at DCA accommodated several of us who wanted to switch from the 6pm flight to the 5pm flight at the last minute. The flight crew was helpful to us too (dealing with luggage).

Very uncomfortable and cramped seats. Everything else was okay, the crew members were nice but nothing was exceptional.

Check in went smoothly. Flight attendant who was assigned my area barely paid any attention to me! She acted as though she was extremely busy and flustered. Maybe she was new?! I told her to change the language on my screen, she said she’d come back to help me but never did so I was able to solve the problem on my own. She came back and said she’d made adjustments on her end. Highly doubt it because I found the setting to change the language! Also, I noticed everyone was eating before we landed so I pushed my help button and she never came so I got up to find her to ask her if I can have breakfast. She said they are not serving breakfast but I can have a sandwich. Yes, that was her response as I saw everyone eating breakfast!!!

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.

Lady behind us talked loud nonstop not your fault but annoying lol

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.

Flight was comfortable- just had to endure a 1 hr delay because of some maintenance issue. Happy that American Airlines does these final checks but just wish they would conduct this maintenance before the flights.

All good. Flight crew was super friendly at the end of a long day

All good. Easy check in and boarding. Lovely flight crew

Friendly crew and pilot. And thank you to the pilot for his smooth landing technique where the wheels don't hit the ground hard - that should be table stakes but doesn't seem to be the case nowadays.

Four hour delay due to late plane arrival- second year in a row on MCO - DCA route. Pitiful service reliability from American. Will avoid in future

Flight was fine, food could have improved (Chicken Enchiladas) and so could the entertainment options on the seat rest (there was none).

I have generally had positive experiences with American Airlines (outside a handful of delayed flights), which is why I wanted to share this feedback constructively. On my recent flight, my travel experience was extremely uncomfortable because my seat mate significantly encroached into my assigned seat space for the duration of the flight. As a result, I was forced to sit partially sideways, with much of my shoulder and upper body extending into the aisle. Unfortunately, my back still hurts from maintaining that awkward position.I recognize that this is a sensitive and challenging issue for airlines and cabin crews to address. Everyone deserves to travel with dignity and respect, and I understand that individual circumstances can vary. However, fairness also requires that all passengers have reasonable access to the seat space they have paid for. When one passenger's use of space substantially impacts another passenger's ability to sit safely and comfortably, there should be a practical solution available.I appreciate the complexities involved, but I hope American Airlines will continue exploring ways to ensure that all passengers can travel comfortably and equitably. This experience detracted significantly from what should have been a routine flight.

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.

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