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Cheap flights from Boston to Idaho Falls from $190

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 5/26. 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.
American Airlines Logo
5:32 am - 12:12 pm
BOS
-
IDA
8h 40m
1 stop
American Airlines Logo
1:44 pm - 10:05 pm
IDA
-
BOS
6h 21m
1 stop
$369American Airlines
Sat, Sep 26 - Sat, Oct 3
American Airlines Logo
7:08 am - 12:12 pm
BOS
-
IDA
7h 04m
1 stop
American Airlines Logo
12:12 pm - 11:55 pm
IDA
-
BOS
9h 43m
1 stop
$396American Airlines
Wed, Sep 30 - Tue, Oct 6
Alaska Airlines Logo
5:32 pm - 1:17 pm
BOS
-
IDA
21h 45m
1 stop
Alaska Airlines Logo
4:03 pm - 6:20 am
IDA
-
BOS
12h 17m
1 stop
$399Alaska Airlines
Sat, May 23 - Sat, May 30
American Airlines Logo
10:40 am - 9:22 pm
BOS
-
IDA
12h 42m
2 stops
American Airlines Logo
1:43 pm - 10:05 pm
IDA
-
BOS
6h 22m
1 stop
$401American Airlines
Wed, Sep 30 - Tue, Oct 6
American Airlines Logo
11:11 am - 11:39 pm
BOS
-
IDA
14h 28m
2 stops
American Airlines Logo
12:44 pm - 12:15 am
IDA
-
BOS
9h 31m
1 stop
$434American Airlines
Tue, May 19 - Sat, May 23
American Airlines Logo
10:40 am - 9:22 pm
BOS
-
IDA
12h 42m
2 stops
American Airlines Logo
7:00 am - 9:48 pm
IDA
-
BOS
12h 48m
2 stops
$444American Airlines
Wed, Sep 30 - Tue, Oct 6
Alaska Airlines Logo
5:32 pm - 1:17 pm
BOS
-
IDA
21h 45m
1 stop
Alaska Airlines Logo
1:54 pm - 7:41 am
IDA
-
BOS
15h 47m
1 stop
$449Alaska Airlines
Thu, May 28 - Mon, Jun 1
Alaska Airlines Logo
7:40 am - 10:56 pm
BOS
-
IDA
17h 16m
2 stops
Alaska Airlines Logo
4:14 pm - 6:09 am
IDA
-
BOS
11h 55m
1 stop
$453Alaska Airlines
Sat, Sep 5 - Wed, Sep 9
American Airlines Logo
5:10 am - 1:23 pm
BOS
-
IDA
10h 13m
1 stop
American Airlines Logo
1:53 pm - 11:59 pm
IDA
-
BOS
8h 06m
1 stop
$459American Airlines
Tue, Jul 28 - Tue, Aug 4
American Airlines Logo
7:08 am - 12:12 pm
BOS
-
IDA
7h 04m
1 stop
American Airlines Logo
7:00 am - 9:45 pm
IDA
-
BOS
12h 45m
2 stops
$460American Airlines
Sat, Sep 26 - Sat, Oct 3

American Airlines flights from Boston to Idaho Falls

Our best American Airlines deals on Boston to Idaho Falls flight tickets
American Airlines
Sep 26
BOS5:32 amBoston Logan Intl
8h 40m
1 stop
IDA12:12 pmIdaho Falls Fanning Field
Oct 3
IDA1:44 pmIdaho Falls Fanning Field
6h 21m
1 stop
BOS10:05 pmBoston Logan Intl
$369
American Airlines
Sep 30
BOS7:08 amBoston Logan Intl
7h 04m
1 stop
IDA12:12 pmIdaho Falls Fanning Field
Oct 6
IDA12:12 pmIdaho Falls Fanning Field
9h 43m
1 stop
BOS11:55 pmBoston Logan Intl
$396
American Airlines
Sep 30
BOS10:40 amBoston Logan Intl
12h 42m
2 stops
IDA9:22 pmIdaho Falls Fanning Field
Oct 6
IDA1:43 pmIdaho Falls Fanning Field
6h 22m
1 stop
BOS10:05 pmBoston Logan Intl
$401

Alaska Airlines flights from Boston to Idaho Falls

Our best Alaska Airlines deals on Boston to Idaho Falls flight tickets
Alaska Airlines
May 23
BOS5:32 pmBoston Logan Intl
21h 45m
1 stop
IDA1:17 pmIdaho Falls Fanning Field
May 30
IDA4:03 pmIdaho Falls Fanning Field
12h 17m
1 stop
BOS6:20 amBoston Logan Intl
$399
Alaska Airlines
May 28
BOS5:32 pmBoston Logan Intl
21h 45m
1 stop
IDA1:17 pmIdaho Falls Fanning Field
Jun 1
IDA1:54 pmIdaho Falls Fanning Field
15h 47m
1 stop
BOS7:41 amBoston Logan Intl
$449
Alaska Airlines
Sep 5
BOS7:40 amBoston Logan Intl
17h 16m
2 stops
IDA10:56 pmIdaho Falls Fanning Field
Sep 9
IDA4:14 pmIdaho Falls Fanning Field
11h 55m
1 stop
BOS6:09 amBoston Logan Intl
$453

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 May 7, 2026.
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

Cheapest round-trip
Quickest round-trip

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Sat 9/26

5:32 am-12:12 pm

1 stop8h 40m

Idaho Falls Fanning Field

Sat 10/3

1:44 pm-10:05 pm

1 stop6h 21m

$369

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Wed 9/30

7:08 am-12:12 pm

1 stop7h 04m

Idaho Falls Fanning Field

Tue 10/6

12:12 pm-11:55 pm

1 stop9h 43m

$396

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Sat 5/23

5:32 pm-1:17 pm

1 stop21h 45m

Idaho Falls Fanning Field

Sat 5/30

4:03 pm-6:20 am

1 stop12h 17m

$399

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Wed 9/30

10:40 am-9:22 pm

2 stops12h 42m

Idaho Falls Fanning Field

Tue 10/6

1:43 pm-10:05 pm

1 stop6h 22m

$401

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Tue 5/19

11:11 am-11:39 pm

2 stops14h 28m

Idaho Falls Fanning Field

Sat 5/23

12:44 pm-12:15 am

1 stop9h 31m

$434

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Wed 9/30

10:40 am-9:22 pm

2 stops12h 42m

Idaho Falls Fanning Field

Tue 10/6

7:00 am-9:48 pm

2 stops12h 48m

$444

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Thu 5/28

5:32 pm-1:17 pm

1 stop21h 45m

Idaho Falls Fanning Field

Mon 6/1

1:54 pm-7:41 am

1 stop15h 47m

$449

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Sat 9/5

7:40 am-10:56 pm

2 stops17h 16m

Idaho Falls Fanning Field

Wed 9/9

4:14 pm-6:09 am

1 stop11h 55m

$453

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Tue 7/28

5:10 am-1:23 pm

1 stop10h 13m

Idaho Falls Fanning Field

Tue 8/4

1:53 pm-11:59 pm

1 stop8h 06m

$459

BostonIdaho Falls

BOS - IDA

BOSIDA

Boston Logan Intl

Sat 9/26

7:08 am-12:12 pm

1 stop7h 04m

Idaho Falls Fanning Field

Sat 10/3

7:00 am-9:45 pm

2 stops12h 45m

$460

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 typical price of a round-trip flight between Boston and Idaho Falls?

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 $435.

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

6h 57m

Direct flights

None
The fastest flight from Boston to Idaho Falls takes 6h 57m
There are no direct flights from Boston to Idaho Falls. There are no popular flight routes from Boston to Idaho Falls.
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Frequently asked questions about flying from Boston to Idaho Falls

  • 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 6h 57m.

  • 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
American AirlinesPriceFrom $395Free CancellationRating
7.1
11,669 reviews
Search American Airlines flights
United AirlinesPriceFrom $435Free CancellationRating
7.4
9,690 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $485Free CancellationRating
7.9
12,336 reviews
Search Alaska 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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