$99 Cheap flights from Seattle - Tacoma Intl. to Idaho Falls Regional (SEA to IDA)

For any present IDA travel advice and quarantine requirements, visit the Covid-19 Travel Advisor. Look before you arrange your flight, so you don’t get caught out en route.

The only thing separating you and your next extraordinary adventure is just one flight. Alaska Airlines is the only air carrier that operates nonstop services between Seattle - Tacoma Intl. Airport (SEA) and IDA, so it’s a good idea to book well ahead of your departure.

For more info about changing your flight to IDA, please visit our Customer Service Portal.

Leave the airplane feeling rested and relaxed by having a snooze and some refreshments during your flight to IDA. With an usual travel time of 4 hours and 57 minutes from Sea-Tac Airport, you’ll have plenty of time to indulge in both.

With a flight distance of only 570 mi, some magazines or a few episodes of your favorite TV show is all you’ll really need to keep yourself amused from Seattle - Tacoma Intl. Airport (SEA) to Idaho Falls Regional Airport (IDA). You’ll be disembarking the plane and diving into exciting adventures in a flash.

Hoping to fly straight from Sea-Tac Airport to IDA? No problem. Alaska Airlines offers up to 30 flights per month and is the preferred choice for many seasoned travelers.

From the moment you enter the departure terminal to when you leave the arrivals terminal, if you’re flying with United Airlines, Delta or American Airlines you can be sure that COVID-19 measures and social distancing rules have been adhered to. Many airlines have introduced capped capacity flights and keeping the middle seat empty.

This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.

Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.

Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.