BOS - IDA

$190 Find Cheap Flights from Boston to Idaho Falls

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Idaho Falls departing on 2/28. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Idaho Falls

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Idaho Falls, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Idaho Falls, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$354
Typical prices: $477-$871
Alaska Airlines
Thu 3/5Mon 3/9
BOS - IDA • 1 stop
Cheapest one-way
$190
Alaska Airlines
Sat 2/28
BOS - IDA • 1 stop
Top airlines
Alaska Airlines
Cheapest • from $354 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
October
Cheapest • 33% price drop
February
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Idaho Falls!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boston to Idaho Falls (BOS-IDA)

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

Thu, Mar 5 - Mon, Mar 9
Alaska Airlines Logo
6:24 pm - 4:43 pm
BOS
-
IDA
24h 19m
1 stop
Alaska Airlines Logo
5:20 pm - 6:54 am
IDA
-
BOS
11h 34m
1 stop
$354Alaska Airlines
Thu, Mar 5 - Mon, Mar 9
Alaska Airlines Logo
6:24 pm - 4:43 pm
BOS
-
IDA
24h 19m
1 stop
Alaska Airlines Logo
5:20 pm - 5:24 pm
IDA
-
BOS
22h 04m
2 stops
$423Alaska Airlines
Sat, Mar 14 - Wed, Mar 18
United Airlines Logo
7:05 am - 3:40 pm
BOS
-
IDA
10h 35m
2 stops
United Airlines Logo
2:35 pm - 11:53 pm
IDA
-
BOS
7h 18m
1 stop
$434United Airlines
Wed, Mar 18 - Sun, Mar 22
Alaska Airlines Logo
7:15 am - 5:19 pm
BOS
-
IDA
12h 04m
1 stop
Alaska Airlines Logo
5:59 pm - 11:59 pm
IDA
-
BOS
28h 00m
1 stop
$451Alaska Airlines
Wed, Mar 18 - Sun, Mar 22
Alaska Airlines Logo
7:15 am - 5:19 pm
BOS
-
IDA
12h 04m
1 stop
Alaska Airlines Logo
5:59 pm - 5:53 am
IDA
-
BOS
33h 54m
2 stops
$521Alaska Airlines
Sat, Mar 14 - Wed, Mar 18
Alaska Airlines Logo
6:24 pm - 11:36 pm
BOS
-
IDA
31h 12m
1 stop
Alaska Airlines Logo
5:59 pm - 11:59 pm
IDA
-
BOS
28h 00m
1 stop
$523Alaska Airlines
Fri, Mar 13 - Wed, Mar 18
Alaska Airlines Logo
7:00 am - 4:43 pm
BOS
-
IDA
11h 43m
1 stop
Alaska Airlines Logo
5:59 pm - 11:59 pm
IDA
-
BOS
28h 00m
1 stop
$541Alaska Airlines
Thu, Apr 23 - Sun, May 3
Alaska Airlines Logo
7:00 am - 3:29 pm
BOS
-
IDA
10h 29m
1 stop
Alaska Airlines Logo
4:06 pm - 7:12 am
IDA
-
BOS
13h 06m
1 stop
$549Alaska Airlines
Thu, Mar 5 - Mon, Mar 9
Delta Logo
7:15 am - 5:49 pm
BOS
-
IDA
12h 34m
2 stops
Delta Logo
6:55 pm - 10:04 am
IDA
-
BOS
13h 09m
2 stops
$561Delta
Thu, May 14 - Thu, May 21
Alaska Airlines Logo
8:05 am - 10:45 pm
BOS
-
IDA
16h 40m
2 stops
Alaska Airlines Logo
1:43 pm - 11:59 pm
IDA
-
BOS
8h 16m
1 stop
$571Alaska Airlines
Booking Insights

KAYAK's insights & trends for Boston to Idaho Falls flights

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

How much is a round-trip flight from Boston to Idaho Falls?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Boston to Idaho Falls departing in March.

What is the cheapest month to fly from Boston to Idaho Falls?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to Idaho Falls, 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 Boston to Idaho Falls is October, where tickets cost $400 (return) on average. On the other hand, the most expensive months are July and June, where the average cost of round-trip tickets is $930 and $814 respectively.

Good to know

Low seasonOctober
Cheapest flight$190
Best time to beat the crowds with an average 33% drop in price.
Most popular time to fly with an average 25% increase in price.
Flight from Boston to Idaho Falls

When to book flights from Boston to Idaho Falls

Are your dates flexible? Find out the best times to travel from Boston to Idaho Falls based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boston to Idaho Falls

  • What is the cheapest flight from Boston to Idaho Falls?

    In the last 3 days, the lowest price for a flight from Boston to Idaho Falls was $190 for a one-way ticket and $354 for a round-trip.

  • Do I need a passport to fly between Boston and Idaho Falls?

    A passport is not required to fly from Boston to Idaho Falls.

  • Which aircraft models fly most regularly from Boston to Idaho Falls?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Boston to Idaho Falls?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Boston and Idaho Falls, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Boston to Idaho Falls, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Boston to Idaho Falls are Alaska Airlines and Delta. With an average price for the route of $748 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $482 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Boston to Idaho Falls?

    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 Boston to Idaho Falls.

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

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

    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 to Idaho Falls with an airline and back to Boston with another airline. Booking your flights between Boston and IDA can sometimes prove cheaper using this method.

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

    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 to Idaho Falls from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Boston to Idaho Falls

 
See real verified KAYAK customer reviews for airlines flying from Boston to Idaho Falls. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to Idaho Falls? 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
Alaska AirlinesOverall score based on 11819 reviews
8.1Boarding
8.5Crew
7.0Entertainment
7.8Comfort
7.1Food
Airline reviews

Flight was scheduled to leave at 6a and delayed for 5 hours due to “mechanical” issues. Everyone else on the flight received an email voucher for $24 of food for the delay, except for our group. Also the carry on luggage bins were full and the crew requested that everyone to pass their carry ons back up to the front while everyone was still standing. They gave no other direction and kept rushing the process. After all bags were sent up, they then asked for seat #s to go with each bag… They should have probably had everyone get to their sits and then pass the bags up in a controlled process.

2.0 MediocreAnonymous, Jan 2026
GEG - BOI
Read more Alaska Airlines reviews

Flight was scheduled to leave at 6a and delayed for 5 hours due to “mechanical” issues. Everyone else on the flight received an email voucher for $24 of food for the delay, except for our group. Also the carry on luggage bins were full and the crew requested that everyone to pass their carry ons back up to the front while everyone was still standing. They gave no other direction and kept rushing the process. After all bags were sent up, they then asked for seat #s to go with each bag… They should have probably had everyone get to their sits and then pass the bags up in a controlled process.

From Las Vegas to Boise all went well. However, our flight was delayed in Boise and I missed my connecting flight from Seattle to Pasco. Moreover, the last flight to Pasco was full and I was booked on the 11:30 flight Sunday and given a hotel accommodation. However, I was scheduled to deliver the Sunday morning service at my church and needed to arrive no later than 10:00. Therefore, I booked a Delta flight scheduled to arrive in Pasco at 23:09. My piece of luggage checked in Las Vegas arrived in Pasco earlier today. I waited at the airport for over an hour last night to speak with an Alaska agent to no avail. I went back after church this morning in search of my piece of luggage and it could not be located. After waiting for 40 minutes to speak to the agent authorized to take my claim, he announced that he was closing the counter to assist on the flight line but not before providing me with a telephone number that would help me with filing my claim. Before I was able to make the call (due to other factors) I received a call from Alaska agent informing me that my luggage had just arrived and I am now waiting for it to be delivered. I deliberately took the more complicated route home to ensure that I would be home in plenty of time to prepare for myself for the Sunday service and accommodate my relatives’ needs. I believe the airport is undermanned given the number of flights coming in and going out. It was fiasco last night with three flights waiting for luggage and another flight landing within minutes. Today’s problems stemmed from a lack of cross training and a serious amount of cargo/baggage going out and too few people scheduled to cover.

The seats were not very comfortable and there were no TV screens. Boarding was pretty fast because there were so few people on such a small plane and I appreciated that they still gave us our snack and drinks, however I really wish they would come up with a good gluten-free snack.

Flight crew and flight were good. But it departed two hours late.

Food was bad. Just a drink for a 5 hour flight

Leg and arm room are horrible. I am not a big person and found it tight.

Pretzels are always a disappointment. Cheezits, Sun Chips, trail mix, anything else would be nice.

Late. Too long a flight for a 737. 0.5 oz of pretzels for a 5+ hour flight at dinner time. One step above Ryan Air/ several below Delta.

The plane boarded late and arrived late which wasn't really ideal.

My seat. The reprentative on the phone was bad. The passengers screamed at each other and no one stopped them. The directions boarding the plane were unclear. There was a medical incident and the ICU nurse present said the women was having a cardic incident. Cooler heads determined it was a UTI. I had a allergy attack and a guy got a mask from the flight attendent and told me to wear it. He "had kidney failure". Why didnt they tell him to wear the mask, why was he even on the plane? It was embarrassing, he said hurtful things. By the way, I have a degree in Medical Micrbiology from Northwestern Medical school. MT(ASCP). Look it up. I Know the difference between allergies and an infection. But we had to listen to the unstable screaming man.

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!!!!

Excellent flight and got us around tough weather. Only issue was seat TV did not work and crew tried to reboot.

Very large passenger too space from my own seat. Arm board couldn’t be lowered because of his size. It wads very uncomfortable trip, as the flight was full couldn’t move anywhere having back pain because of the position in which I was the entire flight.

was sitting in the jet bridge for 10 minutes in -20 degree weather waiting for my bag

Outdated equipment in disrepair, wifi inoperable. Broken seats, taped air vents, generally poor condition, the 717 showed its age and lack of upkeep.

I was fully checked in the prior night and i was unchecked and then didn’t have a seat when I boarded. Instead of an aisle seat, I was out in the middle seat of the very last row of the plane.

In overall it was a good experience, the only down point was that the entertainment screen was working properly.

HORRIBLE, my initial flight was cancelled, they made me pay $200 extra dollars and that got cancelled as well! After 6 cancellations I decided to get a refund because I needed to get home to my babies. Out of $1000+ dollars they offered me only $40 in refund! Totally unacceptable! The flight that they cancelled I was able to fly it on another airline. I had to spend $400 on one way tickets just to get home! I’m still getting the runaround.

First class ticket gets you a choice of chips or nuts. . Just like economy Southwest. Also no screen in the seats. This is first class???!

Seated dude next to me even though lots of empty rows. But main thing was we sat on the tarmac after landing for 30 minutes because of, in the words of the dude who sat next to me, “operational incompetence”. We got changing directions about where to pick up gate checked bags. Pilot and flight attendant were awesome though.

It was a pretty standard flight... until the almost hour and a half spent on the taxi way. I get that the weather has been poor but the delay had nothing to do with the weather and more to do with a plane with several issues tying up the gate. I get that that happens from time to time but this has been EVERY flight I've been on for the past 5 years and I fly 3 to 5 times a year. This isn't just United... it's American, it's Delta. It's an issue with the entire industry. I work for UPS and packages on a cargo plane get better service than people do these days. Anymore I HATE flying.

Flight arrived 30 min early and bag was waiting at the baggage pickup. United Club HNL was one of the nicest in the system

Unfortunately weather delayed our flight waiting for our plane to arrive and due to a little snow time was needed to deice the plane so departure was very delayed and I missed the connecting flight

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

I wish there were outlets to charge my iPhone. The crew was great; we had a female pilot who was great with explaining what was happening and delays,

Update to handle the delay was very bad, crews no smiles or welcome or thanks. Don’t care attitude

It would be nice to have some low carb options in the snacks.

I was trying to take 2 one and a half hour one way trips and I experienced almost 20 delays over the course of those two trips. Only a few of them were due to weather the rest was disorganization

No gates avail at DFW so our incoming had to wait 30 mins for a plane to push back because they Had mechanical. We boarded 90 mins delayed and then we had a mechanical. Come on American…do better. Also at my seat the tray table had not been cleaned. Floor had not been cleaned. But captain and flight Att were very picture and apologetic.

Crew was helpful and cheerful especially when they had no refreshments to work with. The plane was never serviced and had nothing but limited water and coffee onboard. For the price point, a concern of services.

Flight was smooth, quick and felt safe. The 2 delays not happening would have been better but I guess that happens in the airline industry

Flight was canceled. I asked to be rerouted to OKC and then took an Uber.

AA did not allow to board a flight because my connecting flight from DFW had been canceled. I got on another flight to another city. No service on the plane and I did not use their entertainment system.

On time on a day with lots of weather cancellations on other flights. Thank you for getting me home during a winter storm!

Don't change gate multiple times make people run across the airport. Announce delays in a timely manner. Have maintenance crew ready. Don't delay and keep passengers on the plane for 3 hrs. on tarmac.

Everything you need to know for your flight from Boston to Idaho Falls

Information on your arrival and departure airports