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Cheap flights from Boston to Idaho Falls from $416

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Idaho Falls departing on 12/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Boston to Idaho Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:10 am - 12:34 pmBOS-IDA
8h 24m1 stop
Delta Logo
6:35 pm - 6:05 amIDA-BOS
9h 30m1 stop
$421Delta
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Thu, Jan 8 - Mon, Jan 12
Delta Logo
10:35 am - 5:51 pmBOS-IDA
9h 16m1 stop
Delta Logo
6:35 pm - 10:02 amIDA-BOS
13h 27m2 stops
$426Delta
Find Deal
Thu, Jan 8 - Mon, Jan 12
United Airlines Logo
6:00 am - 3:31 pmBOS-IDA
11h 31m2 stops
United Airlines Logo
10:51 am - 11:49 pmIDA-BOS
10h 58m2 stops
$431United Airlines
Find Deal
Thu, Jan 8 - Mon, Jan 12
Alaska Airlines Logo
6:00 am - 2:27 pmBOS-IDA
10h 27m1 stop
Alaska Airlines Logo
4:20 pm - 7:20 amIDA-BOS
13h 00m1 stop
$435Alaska Airlines
Find Deal
Sat, May 23 - Mon, Jun 1
Delta Logo
6:10 am - 12:34 pmBOS-IDA
8h 24m1 stop
Delta Logo
5:25 am - 2:36 pmIDA-BOS
7h 11m1 stop
$436Delta
Find Deal
Sun, Jan 25 - Sat, Jan 31
Delta Logo
6:10 am - 12:34 pmBOS-IDA
8h 24m1 stop
Delta Logo
1:15 pm - 1:04 amIDA-BOS
9h 49m2 stops
$441Delta
Find Deal
Sun, Jan 25 - Sat, Jan 31
Delta Logo
6:55 am - 5:51 pmBOS-IDA
12h 56m2 stops
Delta Logo
6:35 pm - 10:02 amIDA-BOS
13h 27m2 stops
$446Delta
Find Deal
Thu, Jan 8 - Mon, Jan 12
Alaska Airlines Logo
6:00 am - 2:27 pmBOS-IDA
10h 27m1 stop
Alaska Airlines Logo
6:00 am - 6:59 pmIDA-BOS
10h 59m1 stop
$451Alaska Airlines
Find Deal
Sun, May 24 - Fri, May 29
Delta Logo
11:15 am - 6:14 pmBOS-IDA
8h 59m2 stops
Delta Logo
6:50 pm - 6:09 amIDA-BOS
9h 19m1 stop
$475Delta
Find Deal
Sun, May 24 - Fri, May 29
American Airlines Logo
7:31 pm - 12:12 pmBOS-IDA
18h 41m1 stop
American Airlines Logo
1:44 pm - 10:10 amIDA-BOS
18h 26m1 stop
$477American Airlines
Find Deal
Sat, May 23 - Mon, Jun 1

United Airlines flights from Boston to Idaho Falls

Our best United Airlines deals on Boston to Idaho Falls flight tickets
United Airlines
Jan 8
BOS6:00 amBoston Logan Intl
11h 31m
2 stops
IDA3:31 pmIdaho Falls Fanning Field
Jan 12
IDA10:51 amIdaho Falls Fanning Field
10h 58m
2 stops
BOS11:49 pmBoston Logan Intl
$431
Find similar
United Airlines
Dec 9
BOS4:49 pmBoston Logan Intl
18h 58m
1 stop
IDA9:47 amIdaho Falls Fanning Field
Dec 13
IDA4:19 pmIdaho Falls Fanning Field
19h 36m
1 stop
BOS1:55 pmBoston Logan Intl
$545
Find similar
United Airlines
May 24
BOS6:00 amBoston Logan Intl
9h 31m
2 stops
IDA1:31 pmIdaho Falls Fanning Field
May 29
IDA5:57 pmIdaho Falls Fanning Field
13h 27m
2 stops
BOS9:24 amBoston Logan Intl
$564
Find similar

Alaska Airlines flights from Boston to Idaho Falls

Our best Alaska Airlines deals on Boston to Idaho Falls flight tickets
Alaska Airlines
May 23
BOS6:00 amBoston Logan Intl
10h 27m
1 stop
IDA2:27 pmIdaho Falls Fanning Field
Jun 1
IDA4:20 pmIdaho Falls Fanning Field
13h 00m
1 stop
BOS7:20 amBoston Logan Intl
$435
Find similar
Alaska Airlines
May 24
BOS6:00 amBoston Logan Intl
10h 27m
1 stop
IDA2:27 pmIdaho Falls Fanning Field
May 29
IDA6:00 amIdaho Falls Fanning Field
10h 59m
1 stop
BOS6:59 pmBoston Logan Intl
$451
Find similar
Alaska Airlines
May 23
BOS6:00 amBoston Logan Intl
10h 27m
1 stop
IDA2:27 pmIdaho Falls Fanning Field
Jun 1
IDA4:00 pmIdaho Falls Fanning Field
24h 59m
2 stops
BOS6:59 pmBoston Logan Intl
$568
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Boston to Idaho Falls that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated November 26, 2025.
Use the filters below to find and compare flights from Boston to Idaho Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Thu 1/8

6:10 am-12:34 pm

1 stop8h 24m

Idaho Falls Fanning Field

Mon 1/12

6:35 pm-6:05 am

1 stop9h 30m

$421

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Thu 1/8

10:35 am-5:51 pm

1 stop9h 16m

Idaho Falls Fanning Field

Mon 1/12

6:35 pm-10:02 am

2 stops13h 27m

$426

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Thu 1/8

6:00 am-3:31 pm

2 stops11h 31m

Idaho Falls Fanning Field

Mon 1/12

10:51 am-11:49 pm

2 stops10h 58m

$431

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Sat 5/23

6:00 am-2:27 pm

1 stop10h 27m

Idaho Falls Fanning Field

Mon 6/1

4:20 pm-7:20 am

1 stop13h 00m

$435

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Sun 1/25

6:10 am-12:34 pm

1 stop8h 24m

Idaho Falls Fanning Field

Sat 1/31

5:25 am-2:36 pm

1 stop7h 11m

$436

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Sun 1/25

6:10 am-12:34 pm

1 stop8h 24m

Idaho Falls Fanning Field

Sat 1/31

1:15 pm-1:04 am

2 stops9h 49m

$441

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Thu 1/8

6:55 am-5:51 pm

2 stops12h 56m

Idaho Falls Fanning Field

Mon 1/12

6:35 pm-10:02 am

2 stops13h 27m

$446

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Sun 5/24

6:00 am-2:27 pm

1 stop10h 27m

Idaho Falls Fanning Field

Fri 5/29

6:00 am-6:59 pm

1 stop10h 59m

$451

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Sun 5/24

11:15 am-6:14 pm

2 stops8h 59m

Idaho Falls Fanning Field

Fri 5/29

6:50 pm-6:09 am

1 stop9h 19m

$475

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Sat 5/23

7:31 pm-12:12 pm

1 stop18h 41m

Idaho Falls Fanning Field

Mon 6/1

1:44 pm-10:10 am

1 stop18h 26m

$477

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Idaho Falls from

How to get the cheapest flight ticket from Boston to Idaho Falls

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Idaho Falls?

If you aren’t able to travel to Idaho Falls during the month of October, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $440.

What is the cheapest day to depart on your flight to Idaho Falls?

Our data shows that Tuesday is the least expensive day to fly to Idaho Falls. Tickets to fly out on this day can be as low as $618. Be sure to avoid booking your departure on a Wednesday as prices are generally higher than usual. According to our data, the average ticket price to Idaho Falls on Wednesday is $865.

What is the cheapest time of day to depart on your flight to Idaho Falls?

Our most recent data shows that the best time of day to fly to Idaho Falls is in the evening. Flights from Boston to Idaho Falls during this time can be as low as $523. Try not to purchase tickets in the morning because they tend to be around $789. Of course, these prices can vary depending on the time of year and what airport you fly to.

When to book flights from Boston to Idaho Falls

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Idaho Falls according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boston to Idaho Falls (BOS to IDA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Idaho Falls

Fastest flight time

8h 24m

Direct flights

None
The fastest flight from Boston to Idaho Falls takes 8h 24m
There are no direct flights from Boston to Idaho Falls. There are no popular flight routes from Boston to Idaho Falls.
Search flight deals

  • How far is Boston Logan Intl to Idaho Falls Fanning Field by plane?

    There are 2052.3 mi between Boston Logan Intl and Idaho Falls Fanning Field. By plane, this route typically takes 7h 08m.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Idaho Falls Fanning Field Airport?

    Prices for flights from Boston Logan Intl Airport to Idaho Falls Fanning Field Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to Idaho Falls Fanning Field Airport?

  • How old do you have to be to fly from Boston Logan Intl Airport to Idaho Falls Fanning Field Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Boston Logan Intl Airport to Idaho Falls Fanning Field Airport.

  • What documentation or ID do you need to fly to Idaho Falls Fanning Field Airport?

    The travel and health documents you'll need for your trip to Idaho Falls Fanning Field Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Idaho Falls Fanning Field Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Boston to Idaho Falls?

Best airlines flying from Boston to Idaho Falls

Compare and see reviews for airlines that fly from Boston to Idaho Falls with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $346Free CancellationRating
7.9
7,998 reviews
Search Delta flights
American AirlinesPriceFrom $400Free CancellationRating
7.2
11,038 reviews
Search American Airlines flights
United AirlinesPriceFrom $528Free CancellationRating
7.4
9,046 reviews
Search United Airlines flights

Traveling to a place near Idaho Falls?

Book flights to Idaho Falls if you plan to visit one of these locations
Rexburg

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Idaho Falls?

Finding the right flight to Idaho Falls from Boston is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Idaho Falls quick and easy, saving you time and money.

Can I find flights from Boston to Idaho Falls with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Boston to Idaho Falls flights to just show those with flexible booking policies.

How can momondo help me find flights from Boston to Idaho Falls?

Once you have performed a search for Boston to Idaho Falls flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Boston to Idaho Falls right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Boston to Idaho Falls flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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