$181 Cheap Flights from Idaho Falls (IDA) to Bellingham (BLI)

View $181 flight on Tue, Jan 20, 2026Opens in a new window

Popular airlines from Idaho Falls Regional Airport (IDA) to Bellingham, WA (BLI-Bellingham Intl.)

Cheap Flights from Idaho Falls to Bellingham (IDA-BLI)

Prices were available within the past 7 days and start at $181 for one-way flights and $401 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, Jun 3 - Wed, Jun 10
IDA
Idaho Falls
BLI
Bellingham
$401 Roundtrip, found 3 days ago
$401
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Wed, Jun 3 from Idaho Falls to Bellingham, returning Wed, Jun 10, priced at $401 found 3 days ago
Alaska Airlines
Wed, Jun 3 - Wed, Jun 10
IDA
Idaho Falls
BLI
Bellingham
$415 Roundtrip, found 3 days ago
$415
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Wed, Jun 3 from Idaho Falls to Bellingham, returning Wed, Jun 10, priced at $415 found 3 days ago
Alaska Airlines
Wed, Jun 3 - Wed, Jun 10
IDA
Idaho Falls
BLI
Bellingham
$421 Roundtrip, found 17 hours ago
$421
Roundtrip
found 17 hours ago
Select Alaska Airlines flight, departing Wed, Jun 3 from Idaho Falls to Bellingham, returning Wed, Jun 10, priced at $421 found 17 hours ago
Alaska Airlines
Wed, Jun 3 - Wed, Jun 10
IDA
Idaho Falls
BLI
Bellingham
$425 Roundtrip, found 1 day ago
$425
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Jun 3 from Idaho Falls to Bellingham, returning Wed, Jun 10, priced at $425 found 1 day ago
Alaska Airlines
Wed, Jun 3 - Wed, Jun 10
IDA
Idaho Falls
BLI
Bellingham
$441 Roundtrip, found 3 days ago
$441
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Wed, Jun 3 from Idaho Falls to Bellingham, returning Wed, Jun 10, priced at $441 found 3 days ago
Alaska Airlines
Wed, Jun 3 - Wed, Jun 10
IDA
Idaho Falls
BLI
Bellingham
$455 Roundtrip, found 3 days ago
$455
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Wed, Jun 3 from Idaho Falls to Bellingham, returning Wed, Jun 10, priced at $455 found 3 days ago
Alaska Airlines
Wed, Jun 3 - Wed, Jun 10
IDA
Idaho Falls
BLI
Bellingham
$476 Roundtrip, found 3 days ago
$476
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Wed, Jun 3 from Idaho Falls to Bellingham, returning Wed, Jun 10, priced at $476 found 3 days ago
Alaska Airlines
Wed, Jun 3 - Wed, Jun 10
IDA
Idaho Falls
BLI
Bellingham
$486 Roundtrip, found 3 days ago
$486
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Wed, Jun 3 from Idaho Falls to Bellingham, returning Wed, Jun 10, priced at $486 found 3 days ago
Alaska Airlines
Wed, Jun 3 - Wed, Jun 10
IDA
Idaho Falls
BLI
Bellingham
$493 Roundtrip, found 3 days ago
$493
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Wed, Jun 3 from Idaho Falls to Bellingham, returning Wed, Jun 10, priced at $493 found 3 days ago
Alaska Airlines
Wed, Jun 3 - Wed, Jun 10
IDA
Idaho Falls
BLI
Bellingham
$506 Roundtrip, found 3 days ago
$506
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Wed, Jun 3 from Idaho Falls to Bellingham, returning Wed, Jun 10, priced at $506 found 3 days ago

Frequently asked questions

How much does a flight from Idaho Falls Regional Airport (IDA) to Bellingham Intl. Airport (BLI) cost?
Snag a cheap one-way flight from $181 or cheap return flight from $401 from Idaho Falls Regional Airport (IDA) to Bellingham Intl. Airport (BLI) 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 Idaho Falls Regional Airport (IDA) to Bellingham Intl. Airport (BLI)?
June is the cheapest month to fly from IDA to BLI. Traveling outside of peak seasons is often the key to landing a great deal.
What is the cheapest airline that flies from Idaho Falls Regional Airport (IDA) to Bellingham Intl. Airport (BLI)?
To find the cheapest airline that'll fly you from IDA to BLI, use Expedia's filter tool. Customize your search based on what's important to you, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Idaho Falls Regional Airport (IDA) to Bellingham Intl. Airport (BLI)?
There are no daily direct flights available from Idaho Falls Regional Airport (IDA) to Bellingham Intl. Airport (BLI). But you can opt for flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be on your way before you know it.
What day of the week has the most flights from IDA to BLI?
Usually you'll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can vary based on the time of year, carrier 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 Idaho Falls Regional Airport (IDA) to Bellingham Intl. Airport (BLI)?
To arrive at Bellingham Intl. Airport (BLI) without delays, book a flight that takes off from Idaho Falls Regional Airport (IDA) before 3 PM. The chance 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 Idaho Falls Regional Airport (IDA) to Bellingham Intl. Airport (BLI) last-minute?
Last-minute bookings from IDA to BLI are generally more expensive. To secure the cheapest rates, start searching for flights well ahead of time. That being said, if your travel plans are flexible, you may find a cheap ticket just before your departure.
Is it cheaper to book an IDA to BLI flight and hotel package?
Booking an IDA to BLI flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our wide range of hotels and then add activities, car rentals and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Idaho Falls Regional Airport (IDA) to Bellingham Intl. Airport (BLI)?
Generally, it's possible to cancel or reschedule your IDA to BLI flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Origin airport
Idaho Falls Regional
Destination airport
Bellingham Intl.
Airlines serving
Alaska Airlines
Roundtrip price
$400
Distance
618 mi

Book with confidence

Idaho Falls to Bellingham Flights

The cheapest times to fly from Idaho Falls to Bellingham

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 Idaho Falls to Bellingham are during the month of June. You can find some of the cheapest flights from Idaho Falls to Bellingham with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Idaho Falls to Bellingham: 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 Idaho Falls to Bellingham

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 Idaho Falls to Bellingham in 2025. You can also book with separate airlines for your outbound and return journeys, from $181 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 Idaho Falls to Bellingham 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 Idaho Falls to Bellingham 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.

 

Idaho Falls to Bellingham Flights

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*Available to One Key members.