$198 Cheap Flights from Baltimore (BWI) to Idaho Falls (IDA)

View $198 flight on Thu, Apr 23, 2026Opens in a new window

Popular airlines from Baltimore Washington Intl. Airport (BWI) to Idaho Falls Regional Airport (IDA)

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Cheap Flights from Baltimore to Idaho Falls (BWI-IDA)

Prices were available within the past 7 days and start at $198 for one-way flights and $396 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, May 6 - Wed, May 27
BWI
Baltimore
IDA
Idaho Falls
$396 Roundtrip, found 6 hours ago
$396
Roundtrip
found 6 hours ago
Select Alaska Airlines flight, departing Wed, May 6 from Baltimore to Idaho Falls, returning Wed, May 27, priced at $396 found 6 hours ago
Delta
Tue, Apr 7 - Tue, Apr 21
BWI
Baltimore
IDA
Idaho Falls
$397 Roundtrip, found 6 hours ago
$397
Roundtrip
found 6 hours ago
Select Delta flight, departing Tue, Apr 7 from Baltimore to Idaho Falls, returning Tue, Apr 21, priced at $397 found 6 hours ago
Hawaiian Airlines
Tue, Mar 3 - Wed, Mar 18
BWI
Baltimore
IDA
Idaho Falls
$399 Roundtrip, found 6 hours ago
$399
Roundtrip
found 6 hours ago
Select Hawaiian Airlines flight, departing Tue, Mar 3 from Baltimore to Idaho Falls, returning Wed, Mar 18, priced at $399 found 6 hours ago
Delta
Tue, May 5 - Tue, May 19
BWI
Baltimore
IDA
Idaho Falls
$402 Roundtrip, found 6 hours ago
$402
Roundtrip
found 6 hours ago
Select Delta flight, departing Tue, May 5 from Baltimore to Idaho Falls, returning Tue, May 19, priced at $402 found 6 hours ago
American Airlines
Sat, Apr 18 - Sat, Apr 25
BWI
Baltimore
IDA
Idaho Falls
$405 Roundtrip, found 4 days ago
$405
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sat, Apr 18 from Baltimore to Idaho Falls, returning Sat, Apr 25, priced at $405 found 4 days ago
Delta
Mon, Mar 9 - Tue, Mar 24
BWI
Baltimore
IDA
Idaho Falls
$409 Roundtrip, found 6 hours ago
$409
Roundtrip
found 6 hours ago
Select Delta flight, departing Mon, Mar 9 from Baltimore to Idaho Falls, returning Tue, Mar 24, priced at $409 found 6 hours ago
Hawaiian Airlines
Wed, Mar 4 - Wed, Mar 18
BWI
Baltimore
IDA
Idaho Falls
$409 Roundtrip, found 6 hours ago
$409
Roundtrip
found 6 hours ago
Select Hawaiian Airlines flight, departing Wed, Mar 4 from Baltimore to Idaho Falls, returning Wed, Mar 18, priced at $409 found 6 hours ago
Hawaiian Airlines
Tue, Mar 3 - Tue, Mar 17
BWI
Baltimore
IDA
Idaho Falls
$411 Roundtrip, found 6 hours ago
$411
Roundtrip
found 6 hours ago
Select Hawaiian Airlines flight, departing Tue, Mar 3 from Baltimore to Idaho Falls, returning Tue, Mar 17, priced at $411 found 6 hours ago
Hawaiian Airlines
Sat, Feb 21 - Tue, Mar 10
BWI
Baltimore
IDA
Idaho Falls
$413 Roundtrip, found 6 hours ago
$413
Roundtrip
found 6 hours ago
Select Hawaiian Airlines flight, departing Sat, Feb 21 from Baltimore to Idaho Falls, returning Tue, Mar 10, priced at $413 found 6 hours ago
United
Sat, Feb 14 - Sat, Feb 21
BWI
Baltimore
IDA
Idaho Falls
$432 Roundtrip, found 4 days ago
$432
Roundtrip
found 4 days ago
Select United flight, departing Sat, Feb 14 from Baltimore to Idaho Falls, returning Sat, Feb 21, priced at $432 found 4 days ago

Find the cheapest month to fly from Baltimore (BWI) to Idaho Falls (IDA)

February is typically the cheapest month to fly

From $346 - $1,064 per traveler.

Alternative airports near Idaho Falls

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Idaho Falls Regional IDA. Cheapest and Closest option available. Average driving time to city center is 5 minutes. Flights from $501
IDA
Idaho Falls Regional
CheapestClosest
Average driving time to city center5 min
Flights from $501
Flights from Baltimore (BWI) to Idaho Falls (IDA)
Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
Idaho Falls Regional
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Roundtrip price
$396
Distance
1846 mi

Baltimore to Idaho Falls Flights

The cheapest times to fly from Baltimore to Idaho Falls

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Baltimore to Idaho Falls are during the month of May. You can find some of the cheapest flights from Baltimore to Idaho Falls with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Baltimore to Idaho Falls

Sunday is one of the best days to book for cheap flights from Baltimore to Idaho Falls: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Baltimore to Idaho Falls

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Baltimore to Idaho Falls in 2025. You can also book with separate airlines for your outbound and return journeys, from $198 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Baltimore to Idaho Falls flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Baltimore to Idaho Falls airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Idaho Falls Regional Airport (IDA) cost?
Lock in a cheap one-way flight from $198 or cheap return flight from $396 from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Idaho Falls Regional Airport (IDA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Idaho Falls Regional Airport (IDA)?
May is the least expensive month to fly from BWI to IDA. Timing your trip outside of the busy season is often the key to better flight prices.
What is the cheapest airline that flies from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Idaho Falls Regional Airport (IDA)?
To find the cheapest airline that'll fly you from BWI to IDA, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Idaho Falls Regional Airport (IDA)?
You'll have to book a flight with a layover if you're traveling from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Idaho Falls Regional Airport (IDA). Direct flights don't operate daily on this route. However, just filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from BWI to IDA?
Usually you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* However, this can change based on the airline, time of year and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Idaho Falls Regional Airport (IDA)?
To arrive at Idaho Falls Regional Airport (IDA) on schedule, opt for a flight that leaves Baltimore Washington Intl. Thurgood Marshall Airport (BWI) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Idaho Falls Regional Airport (IDA) last-minute?
Booking your ticket from BWI to IDA shortly before your journey is generally more expensive. But if you're flexible with your travel times and dates, you could grab a cheap last-minute fare.
Is it cheaper to book a BWI to IDA flight and hotel package?
Compared with arranging hotels and flights separately, booking a BWI to IDA flight and hotel package with Expedia could result in significant savings. What's more, managing everything in one place takes the hassle out of planning your trip. Just pick your flights and select from our extensive range of hotels, then personalize your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Idaho Falls Regional Airport (IDA)?
In most instances, you can reschedule or cancel your BWI to IDA flight. However, there may be additional charges, especially if your booking was made more than 24 hours ago. Check your itinerary for the airline's fees and rules on flight changes, or if you need further details, go to our Customer Service portal.

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*Available to One Key members.