Cheap Flights to Southwest Idaho: Southwest Idaho Flight Deals

View €689 flight on Thu, 22 Jan 2026Opens in a new window

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Cheap round-trip flights to Southwest Idaho

Prices were available within the past 7 days and start at €689 for one-way flights and €781 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Thu, 15 Jan - Thu, 29 Jan
DUB
Dublin
BOI
Boise
€781 Return, found 5 days ago
€781
Return
found 5 days ago
Select Icelandair flight, departing Thu, 15 Jan from Dublin to Boise, returning Thu, 29 Jan, priced at €781 found 5 days ago
Delta
Thu, 15 Jan - Thu, 29 Jan
DUB
Dublin
BOI
Boise
€804 Return, found 5 days ago
€804
Return
found 5 days ago
Select Delta flight, departing Thu, 15 Jan from Dublin to Boise, returning Thu, 29 Jan, priced at €804 found 5 days ago
American Airlines
Thu, 15 Jan - Thu, 29 Jan
DUB
Dublin
BOI
Boise
€814 Return, found 5 days ago
€814
Return
found 5 days ago
Select American Airlines flight, departing Thu, 15 Jan from Dublin to Boise, returning Thu, 29 Jan, priced at €814 found 5 days ago
United
Thu, 15 Jan - Thu, 29 Jan
DUB
Dublin
BOI
Boise
€828 Return, found 5 days ago
€828
Return
found 5 days ago
Select United flight, departing Thu, 15 Jan from Dublin to Boise, returning Thu, 29 Jan, priced at €828 found 5 days ago
Lufthansa
Mon, 1 Sep - Mon, 8 Sep
DUB
Dublin
BOI
Boise
€872 Return, found 5 days ago
€872
Return
found 5 days ago
Select Lufthansa flight, departing Mon, 1 Sep from Dublin to Boise, returning Mon, 8 Sep, priced at €872 found 5 days ago

Find the cheapest month to fly from Columbus (CMH) to Boise (BOI)

October is typically the cheapest month to fly

From €138 - €462 per traveller.

Graph displaying average flight prices per month

Expedia.ie is an online travel company that specialises in securing the best prices for flights to Southwest Idaho. With Expedia you get highly specialised services, combining the best of technology, in-depth knowledge and the best connections in order to offer great deals to Southwest Idaho. Expedia shares your passion for travel and has built the best online travel service that promotes and encourages travel. Whether you are looking for cheap flights to Southwest Idaho, or are just on the lookout for the best flights to Southwest Idaho, you are sure to find the best deals with Expedia.ie.

"One of the many benefits of booking your flights through Expedia is that we are one of the world’s largest online travel agency, which means we use our collective experience and work tirelessly to bring you the best prices. With Expedia you get a user-friendly internet experience and a dedicated customer support service that ensures that everything goes smoothly. The goal of Expedia is to offer premium services at the lowest price, all at one single place. If you wish to save even more try combing a hotel in Southwest Idaho to your flight and create a personalised low cost city break or holiday to your favourite destination. Book early and you could save even more!

If you have an Expedia.ie itinerary number and have a question or concern about your travel plans you can call us on (01) 524 5005 from 8am - 10pm Monday to Friday, and 9am - 10pm at weekends and an Expedia agent will help you.

Frequently asked questions

How do I find cheap flights to Southwest Idaho that have flexible change policies?
It's as easy as 1-2-3 with Expedia. Step 1: Type in your preferred dates and destination and click on the "Search" button. Step 2: Check "No change fee" below the "Flexible change policies" filter on the top left of your screen. Step 3. Bag a flexible and cheap fare to Southwest Idaho.
Which airlines fly to Southwest Idaho?
You can choose from various airlines that offer flights into or near Southwest Idaho. Here are some of the best of them:

  • Alaska Airlines - 785 flights to or near Southwest Idaho each month, including 754 flights to Boise Airport (BOI) and 30 flights to Friedman Memorial Airport (SUN) per month.
  • Delta Air Lines - 550 flights to or near Southwest Idaho each month, including 489 flights to Boise Airport (BOI) and 60 flights to Friedman Memorial Airport (SUN) per month.
  • United Airlines - 347 flights to or near Southwest Idaho each month, including 303 flights to Boise Airport (BOI) and 43 flights to Friedman Memorial Airport (SUN) per month.

How can I find cheap tickets to Southwest Idaho?
One of the easiest ways to find cheap tickets to Southwest Idaho is to be flexible with your travel dates. Search for your flights, then click "flexible dates" above the results. It will reveal the cheapest prices for nearby days. The lowest price for a flight to Southwest Idaho in the last seven days was €781. Booking well ahead of time will generally help you get an even bigger bargain.
How much is a flight to Southwest Idaho?
The price of a round-trip airfare to Southwest Idaho in the last seven days ranged between €781 and €872. If you were heading one way from Dublin (DUB), you could have landed a low-cost fare from just €689.
What are the most popular airports to fly into in Southwest Idaho?
Pack your suitcase and cruise into one of these busy Southwest Idaho airports:

  • Boise Airport (BOI) - 1,994 flights per month.
  • Friedman Memorial Airport (SUN) - 134 flights per month.

How much is a plane ticket to Southwest Idaho?
In the last seven days, tickets ranged between €781 and €872. Scroll through our great deals to Southwest Idaho, pick your favourite and get ready for your next fun holiday!
What months are the cheapest to book a flight to Southwest Idaho?
To bag cheap flights to Southwest Idaho, book sometime in February when the price of fares are at their lowest. The most expensive time to book? In the U.S, it's the month of December.
Flights to Southwest Idaho information
Destination airport
Boise
Destination airport IATA code
BOI
Destination city name
Boise
Return price
€780

Trending flights to Southwest Idaho

Prices were available within the past 7 days and start at €689 for one-way flights and €781 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Thu, 15 Jan - Thu, 29 Jan
DUB
Dublin
BOI
Boise
€781 Return, found 5 days ago
€781
Return
found 5 days ago
Select Icelandair flight, departing Thu, 15 Jan from Dublin to Boise, returning Thu, 29 Jan, priced at €781 found 5 days ago
*Available to Expedia members.