$319 Cheap Flights from Wilmington (ILG) to Boise (BOI)

View $319 flight on Fri, Oct 24, 2025Opens in a new window

Popular airlines from Wilmington, DE (ILG-New Castle) to Boise Airport (BOI)

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Cheap Flights from Wilmington to Boise (ILG-BOI)

Prices were available within the past 7 days and start at $319 for one-way flights and $477 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, Jan 1 - Tue, Jan 6
ILG
Wilmington
BOI
Boise
$477 Roundtrip, found 1 day ago
$477
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Jan 1 from Wilmington to Boise, returning Tue, Jan 6, priced at $477 found 1 day ago
American Airlines
Fri, Oct 17 - Mon, Nov 3
ILG
Wilmington
BOI
Boise
$531 Roundtrip, found 3 days ago
$531
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, Oct 17 from Wilmington to Boise, returning Mon, Nov 3, priced at $531 found 3 days ago
American Airlines
Tue, Mar 24 - Wed, Mar 25
ILG
Wilmington
BOI
Boise
$537 Roundtrip, found 4 days ago
$537
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Mar 24 from Wilmington to Boise, returning Wed, Mar 25, priced at $537 found 4 days ago
American Airlines
Thu, Jan 1 - Tue, Jan 6
ILG
Wilmington
BOI
Boise
$539 Roundtrip, found 1 day ago
$539
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Jan 1 from Wilmington to Boise, returning Tue, Jan 6, priced at $539 found 1 day ago
American Airlines
Thu, Jan 1 - Thu, Jan 8
ILG
Wilmington
BOI
Boise
$542 Roundtrip, found 1 day ago
$542
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Jan 1 from Wilmington to Boise, returning Thu, Jan 8, priced at $542 found 1 day ago
American Airlines
Thu, Jan 1 - Tue, Jan 6
ILG
Wilmington
BOI
Boise
$547 Roundtrip, found 1 day ago
$547
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Jan 1 from Wilmington to Boise, returning Tue, Jan 6, priced at $547 found 1 day ago
American Airlines
Wed, Dec 31 - Tue, Jan 6
ILG
Wilmington
BOI
Boise
$572 Roundtrip, found 1 day ago
$572
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Dec 31 from Wilmington to Boise, returning Tue, Jan 6, priced at $572 found 1 day ago
American Airlines
Wed, Dec 31 - Thu, Jan 8
ILG
Wilmington
BOI
Boise
$575 Roundtrip, found 1 day ago
$575
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Dec 31 from Wilmington to Boise, returning Thu, Jan 8, priced at $575 found 1 day ago
American Airlines
Thu, Jan 1 - Tue, Jan 6
ILG
Wilmington
BOI
Boise
$577 Roundtrip, found 1 day ago
$577
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Jan 1 from Wilmington to Boise, returning Tue, Jan 6, priced at $577 found 1 day ago
American Airlines
Thu, Jan 1 - Mon, Jan 5
ILG
Wilmington
BOI
Boise
$578 Roundtrip, found 1 day ago
$578
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Jan 1 from Wilmington to Boise, returning Mon, Jan 5, priced at $578 found 1 day ago

Alternative airports near Boise

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

Select flight to Boise Airport BOI. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $588
BOI
Boise Airport
CheapestClosest
Average driving time to city center8 min
Flights from $588

Frequently asked questions

How much does a flight from Wilmington, DE (ILG-New Castle) to Boise Airport (BOI) cost?
Lock in a cheap one-way flight from $319 or cheap return flight from $477 from Wilmington, DE (ILG-New Castle) to Boise Airport (BOI) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Wilmington, DE (ILG-New Castle) to Boise Airport (BOI)?
Planning your getaway for January can help you save, as it's the cheapest month for flights between ILG and BOI. You'll usually find the lowest prices during the off-season.
What is the cheapest airline that flies from Wilmington, DE (ILG-New Castle) to Boise Airport (BOI)?
Use the filters on Expedia to compare different airlines and find the most affordable carrier that'll take you from ILG to BOI. Then, sort your results by "Price (lowest to highest)" to score the best deal available.
How many flights per day from Wilmington, DE (ILG-New Castle) to Boise Airport (BOI)?
You'll have to hop on a flight with a layover if you're traveling from Wilmington, DE (ILG-New Castle) to Boise Airport (BOI). 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 ILG to BOI?
Generally you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can change depending 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 Wilmington, DE (ILG-New Castle) to Boise Airport (BOI)?
Choose a flight from Wilmington, DE (ILG-New Castle) to Boise Airport (BOI) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Departures after this time are on average 22% more likely to be canceled.**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 Wilmington, DE (ILG-New Castle) to Boise Airport (BOI) last-minute?
Last-minute fares from ILG to BOI are usually more expensive. To secure the lowest prices, start searching for flights as soon as possible. That being said, if your travel plans are flexible, it's possible to land a cheap fare just before your departure.
Is it cheaper to book an ILG to BOI flight and hotel package?
Compared with arranging hotels and flights separately, booking an ILG to BOI flight and hotel package with Expedia could lead to significant savings. Better yet, having it all in one place will take the stress out of planning your trip. Just pick your flights and choose from our extensive range of stays, then tailor your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Wilmington, DE (ILG-New Castle) to Boise Airport (BOI)?
Usually, it's possible to cancel or reschedule your ILG to BOI flight. However, if it's been more than 24 hours since booking, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
New Castle
Destination airport
Boise
Roundtrip price
$476
Distance
2094 mi

Book with confidence

Wilmington to Boise Flights

The cheapest times to fly from Wilmington to Boise

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 Wilmington to Boise are during the month of January. You can find some of the cheapest flights from Wilmington to Boise with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Wilmington to Boise

Sunday is one of the best days to book for cheap flights from Wilmington to Boise: 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 Wilmington to Boise

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 Wilmington to Boise in 2025. You can also book with separate airlines for your outbound and return journeys, from $319 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 Wilmington to Boise 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 Wilmington to Boise 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.

 

Wilmington to Boise Flights

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*Available to One Key members.