$40 Find Cheap Flights from Idaho Falls to the United States

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 Falls to the United States departing on 8/3. 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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Cheap Flights from Idaho Falls to the United States

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
New York
New York1 stop$297
Los Angeles
Los Angeles1 stop$231
Las Vegas
Las Vegasnonstop$89
Chicago
Chicago1 stop$239
San Francisco
San Francisco2 stops$276
Miami
Miami1 stop$356
Boston
Boston1 stop$369
Fort Lauderdale
Fort Lauderdale1 stop$374
Denver
Denvernonstop$249
Seattle
Seattlenonstop$277
Atlanta
Atlanta2 stops$338
Dallas
Dallas1 stop$323
Tampa
Tampa1 stop$349
Houston
Houston1 stop$311
San Diego
San Diego1 stop$234
Honolulu
Honolulu1 stop$558
Philadelphia
Philadelphia1 stop$349
New York
New York1 stop$297
Los Angeles
Los Angeles1 stop$231
Las Vegas
Las Vegasnonstop$89
Chicago
Chicago1 stop$239
San Francisco
San Francisco2 stops$276
Miami
Miami1 stop$356
Boston
Boston1 stop$369
Fort Lauderdale
Fort Lauderdale1 stop$374
Denver
Denvernonstop$249
Seattle
Seattlenonstop$277
Atlanta
Atlanta2 stops$338
Dallas
Dallas1 stop$323
Tampa
Tampa1 stop$349
Houston
Houston1 stop$311
San Diego
San Diego1 stop$234
Honolulu
Honolulu1 stop$558
Philadelphia
Philadelphia1 stop$349

Book Cheap Idaho Falls to the United States Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Idaho Falls to the United States 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 flight deals from Idaho Falls to the United States

Mon, Jul 20 - Fri, Jul 31
Allegiant Air Logo
3:50 pm - 4:26 pm
IDA
-
PDX
1h 36mnonstop
Allegiant Air Logo
12:20 pm - 3:00 pm
PDX
-
IDA
1h 40mnonstop
$71Allegiant Air
Mon, Jul 20 - Mon, Jul 27
Allegiant Air Logo
3:50 pm - 4:26 pm
IDA
-
PDX
1h 36mnonstop
Allegiant Air Logo
12:20 pm - 3:00 pm
PDX
-
IDA
1h 40mnonstop
$73Allegiant Air
Wed, Jul 1 - Tue, Jul 7
Delta Logo
6:00 am - 10:42 am
IDA
-
LAX
5h 42m
1 stop
Delta Logo
5:05 pm - 10:32 pm
LAX
-
IDA
4h 27m
1 stop
$231Delta
Wed, Aug 26 - Sat, Aug 29
United Airlines Logo
5:53 pm - 7:45 pm
IDA
-
DEN
1h 52mnonstop
United Airlines Logo
8:05 am - 9:51 am
DEN
-
IDA
1h 46mnonstop
$249United Airlines
Tue, Oct 27 - Wed, Nov 4
Delta Logo
6:45 pm - 11:47 pm
IDA
-
SAN
6h 02m
1 stop
Delta Logo
5:00 pm - 10:19 pm
SAN
-
IDA
4h 19m
1 stop
$251Delta
Fri, Sep 18 - Fri, Sep 25
United Airlines Logo
2:25 pm - 4:15 pm
IDA
-
DEN
1h 50mnonstop
United Airlines Logo
1:39 pm - 3:23 pm
DEN
-
IDA
1h 44mnonstop
$258United Airlines
Sat, Oct 31 - Tue, Nov 3
Alaska Airlines Logo
1:46 pm - 7:42 pm
IDA
-
SAN
6h 56m
1 stop
Alaska Airlines Logo
4:23 pm - 11:42 pm
SAN
-
IDA
6h 19m
1 stop
$261Alaska Airlines
Wed, Aug 19 - Tue, Sep 1
Alaska Airlines Logo
2:01 pm - 3:07 pm
IDA
-
SEA
2h 06mnonstop
Alaska Airlines Logo
8:05 pm - 10:56 pm
SEA
-
IDA
1h 51mnonstop
$277Alaska Airlines
Tue, Oct 6 - Tue, Oct 13
American Airlines Logo
2:20 pm - 6:17 pm
IDA
-
DFW
2h 57mnonstop
American Airlines Logo
7:10 pm - 9:22 pm
DFW
-
IDA
3h 12mnonstop
$355American Airlines
Wed, Sep 2 - Wed, Sep 9
American Airlines Logo
2:20 pm - 11:27 pm
IDA
-
BNA
8h 07m
1 stop
American Airlines Logo
3:40 pm - 9:20 pm
BNA
-
IDA
6h 40m
1 stop
$383American Airlines
Booking Insights

KAYAK's insights & trends for Idaho Falls to the United States flights

Get data-powered insights and trends into flights from Idaho Falls to the United States to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Idaho Falls to the United States flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to the United States from Idaho Falls found in the last 5 days was to Las Vegas, at $70 round-trip. The most popular route is from Idaho Falls (IDA) to Seattle (SEA), and the cheapest round-trip airline ticket found on this route in the last 5 days was $262.

Can I save money by flying with a layover from Idaho Falls to the United States?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $385, prices are generally cheapest when you fly direct.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Idaho Falls to the United States, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Idaho Falls to the United States is July, when tickets cost $43 (return) on average. On the other hand, the most expensive months are March and December, when the average cost of round-trip tickets is $863 and $746 respectively.

Good to know

Low seasonApril
Cheapest flight$38
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly with an average 9% increase in price.
Flight from Idaho Falls to Portland

FAQs - booking United States flights

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Idaho Falls 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 Falls 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 Falls 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 Falls 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 Falls to the United States up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to the United States

  • Looking for a cheap flight? 25% of our users found tickets from Idaho Falls to the following destinations at these prices or less: Denver $245 one-way - $410 round-trip; Seattle $208 one-way - $327 round-trip; Salt Lake City $207 one-way - $381 round-trip

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 12474 reviews
7.8Comfort
8.1Boarding
8.5Crew
7.0Entertainment
7.1Food
Airline reviews

I upgraded to a better seat and it was much more comfortable. Nobody serves food anymore and actually on a 2+ hr flight not necessary. I didn’t even get water.

6.0 GoodPatricia, Jun 2026
SEA - RNO
Read more Alaska Airlines reviews

I upgraded to a better seat and it was much more comfortable. Nobody serves food anymore and actually on a 2+ hr flight not necessary. I didn’t even get water.

Missoula is a great airport. Desk and gate crews were very helpful and friendly

Other than delaying take off by an hour, the flight was smooth. Crew were kind and supportive, and made sure we were always considered as a priority.

Not able to get boarding pass for domestic connection flight when check in at international airport. I was told I need to get connection flight boarding pass after I entered US. It us very inconvenient.

Flight was on time. My pre-ordered meal came as expected.

It was good. Too long for older people. Service and support was great! Friendly crew!

I was very impressed at how Alaska Airlines handles people with medical needs.

Check in & bag drop was straightforward. Alaskair changed the gate approx 40 min before departure, and I only became aware due to Google wallet update to my boarding pass. Had to move from gate N1 to C9 which required use of the Train, luckily I had time available.

We were 35 minutes late because the caterer had not stocked the plane. Plane was fully loaded and ready to go 15 minutes before departure time. We sat there 35 minutes?

Flight was delayed and we were left in the plane with planed turned off, took so long to get to destination and luggages were lost. Such a hectic travel

Flight was great! This flight from Atlanta was even better than when I paid for Comfort from SNA to Atlanta.

Connection flights should be spaced out farther because too close I missed my connection.

Definitely a southern flavor. Cordiality was evident even though no drinks or snacks were served.

On time! There were plenty of airport employees who were able to keep us moving in the right direction. The crew on the plane were professional.

Left /arrived on time. Decent seat space. Like the wifi/plugs and entertainment. Windows and tray table were kinda gross. Attendants didn't start snack service til 40mins before landing. Two rows before us, captain came on to say there's turbulence and recalled staff to seats. So, no drink/snack. Later, attendants didn't stop to see if we had trash nor even look our way. Felt invisible! Almost all pilot announcements were not only unintelligible, but so quiet. We had no idea what she said.

Average seat comfort, a drink and chips were provided, early boarding because we checked a carryon at the gate was nice. Ticket pricing shenanigans, including fees to pick a seat, check a bag, and get food onboard - evidence the industry is reinvigorating last century’s strategies- destroys the experience before one ever arrives at the airport. It’s difficult to recognize any value or sustain loyalty in the end-to-end process making air travel more drudgery than pleasure.

Gate agent was unhelpful for handicapped boarding. Flight attendant seemed untrained.

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

Clean planes and not take my comfort class seat away.

Weather caused a long delay, but the efficiency and updates from the pilot were helpful. We were able to make our connection fortunately.

The flight was delayed, they didn’t even have water for the toilets or for drinks

Even through the flight was delayed due to storms near IAH The flight was great! The crew was so hospitable and professional

I flew from Santa Fe to Denver to catch a flight to London and the transfer of my luggage on arrival at Denver to the London flight worked perfectly. The crew on the ground and on board for the London flight were so friendly and efficient.

Boarded early; and arrived home 40 mins early. After a long flight, it’s nice to be back home early. These flights have no amenities; no snacks. So need to bring your own

Boarded early, left early, arrived 40 mins early! A win win for me!

New plane was lovely. Crew customer service is always lax but expected. Kraft on time and arrived safely.

These airplanes should be illegal. The seats are two tight, it is a safety issue. Wheelchair support was ridiculously slow. We almost missed our flight.

It was a short flight so I was expecting too much

Horrifying Almost 2 million miles. Bring your own food and drink. One coffee or drink every three hours. Have to order meals on app more than 24 hours ahead Tiny and dirty bathrooms

Flight was delayed but more than 90 minutes. This caused me to miss my available windows for pick-up by a friend. I had to pay $125 for an uber back home from the airport which was an added expense that I had not budgeted for my trip. Staff was friendly.

Seats were very uncomfortable and being charged for snacks and water.........

Allegiant actually impressed me, original inbound flight from PBG was so late they gave us a bird inbound from Des Moines and only left 1h late and gained 40 minutes back in the air. Comfortable flight with no frills but no complaints.

Flight was delayed. Crew was good but hot coffee was not available.

Great. No choice for n/a. No food or entertainment options

No food is available without purchasing it and there is no in-flight entertainment. Both of these are OK because we got an inexpensive flight from Allegiant and, otherwise, our experience was excellent.

just had water and there was plenty of leg & seat room. But then i don't weight 220#s!!

Not totally their fault- screaming kids that had zero parent intervention.

It was cold on the flight. The crew was very pleasant. I didn't order any food. We were delayed due to Captain waiting on maintenance log. He kept us informed though. The flight itself was smooth. I would definitely fly with Allegiant again!

I had a fantastic experience with Allegiant. I had wheelchair assistance and they helped me find my luggage and brought me to my car. Even loaded my luggage. Wonderful service!! Thank you Allegiant!

Superb. Staff great. Great flight. As with other airlines, seating too tight and restrictive.

Our flight was repeatedly delayed for maintenance problems: scheduled for 9.30am, eventually delayed to 7pm! Very very inconvenient! AA should have provided a substitute plane much earlier.. On the other hand, Customer Service crew in Charlotte helped us to reach NY (LGA) by late afternoon. Thank you Patricia!! The actual flight was quick and very comfortable. As always a. excellent, professional crew. [no food on a a short hop).

Take-off delayed an hour because of a missing flight officer, so,arrived in Charlotte lates causing many passengers to miss connections. Otherwise a very good flight, safe and comfortable, with an excellent professional crew.

Little time between flight from Dallas to flight to Gainesville. We chose this one, 43 minutes between, because the price for a connection with at least an hour between, was so much higher. Had to ask passengers on the Dallas flight to please allow us to deplane ahead of them. The economy passengers allowed this. We had to walk very fast to the next gate, 35 gates away. Thankfully all in the same terminal. Getting to the small Gainesville plane was a little confusing as you enter an area that is boarding many small planes at the same time. We stood in the wrong line for about 15 seconds before realizing it was not our Gainesville flight. Since I had boarded at this gate in the past, I knew to check the signs carefully so we weren’t lost. The first class seat experience was wonderful. I really enjoyed the upgrade. We were offered an alcohol drink as soon as we sat down. I got something different but it was a great gesture especially since we really had to hurry to make the flight. We had packed expecting we might miss this connection, but made it. Our luggage didn’t miss the flight. American Airlines delivered our bags to our home the next day. That was very convenient!

The plane was large, not full, but one with 3 seats near each window and 4 in a row in the middle of the plane. There were screens on the backs of the seats for entertainment and information. To use the entertainment one needs ear plugs that physically plug into the screen. My husband had some he let me use as I only had blue tooth type. The stewards gave out some headphones to some, but when my neighbor asked for some, the steward said no. So maybe they ran out? Idk. Bring the old kind of headphones or earbuds if you want entertainment in case this is the type of entertainment offered. We had a very tight connection in Miami. 43 minutes. The other economy passengers allowed us to get ahead of them because I asked if we could since we were near boarding time for our next flight and 35 gates away. They were extremely kind. First class wasn’t going to allow us to pass through. We did make the next flight. Our baggage didn’t, but they were delivered to us the next day and we were prepared with essentials in our carry on packs.

Food is what you expect on a plane. Nothing gluten free. But that is expected. Drinks, apple juice, was fine. Seat, what I expected. Fine.

Everything went as planned. The only issue I had was with the gate C31 attendant. The person could barely speak English and was very difficult to understand.

The flight took off an hour late which made the connection concerning

The flight from LA to Chicago was smooth and service was very good overall.

The flight from Dallas to Tokyo was not on Japan Airlines. It was on American Airlines. Very disappointed that we did not fly on Japan Airlines. Will not be using you liars again. I’ll just book direct from the airline next time. Wish you could make this right and has us fly on Japan Air when heading back home to the US.

The Mario was so helpful and provided amazing customer service however l have being waiting for a callback for almost a week now and have not heard anything further after l informed them l wanted to change my date of traveling because of my hospital appointment even send them proof and l was unable to use manag your booking on their website is a bit frustrating and l would appreciate an update on My request as soon as possible. And have called them times without numbers no response

Everything you need to know for your flight from Idaho Falls to the United States

Information on your arrival and departure airports