$169 Find Cheap Flights from Idaho Falls to Seattle - Compare and Save

These are the earliest and latest flight times available from Idaho Falls to Seattle:

• Earliest: departs at 6:00 am and lands at 8:12 am
• Latest: departs at 1:58 pm and lands at 4:10 pm.

The flight takes about 2h 12m.

Only Economy Class is available on flights from Idaho Falls to Seattle.

A nonstop flight from Idaho Falls to Seattle takes 2h 12m, covering 565 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

Round-trip flights from Idaho Falls to Seattle range from $290 to $465, with an average of $348 over the past 12 months. Anything below $290 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 63% above the $348 route average. Book 4 weeks before departure for the lowest fares.

On this route, nonstop flights are cheaper than layover options on average. Nonstop fares average $338 round-trip, compared to $461 via a layover through Portland (PDX).

The Embraer 175 family is used most often on this route, operated mainly by Alaska Airlines and Hawaiian Airlines. Other aircraft seen on the route include Canadair (Bombardier) Regional Jet 700 variants.

Morning is the busiest departure period on Idaho Falls to Seattle flights, with 50% of flights leaving in that window. Afternoon departures account for 50%, evening flights for 0%, and night flights for 0%.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $297 to $2,911. That means the highest observed fare was about 10x higher than the lowest one.

Alaska Airlines is the only airline on the Idaho Falls to Seattle route offering in-flight Wi-Fi. Pricing depends on fare class.

One-way fares from Idaho Falls to Seattle are currently lower than usual. Average one-way flight prices are about $227, which is 16% below the typical average for this route.

Seattle/Tacoma Intl Airport (SEA) hosts 5 major car rental companies, with daily rates averaging $61 for economy cars. Top options include:

• Fox
• Europcar
• Thrifty
• Budget
• Hertz

Flights from Idaho Falls to Seattle usually depart from Idaho Falls Fanning Field (IDA) and arrive at Seattle/Tacoma Intl (SEA).

Connecting flights from Idaho Falls to Seattle most commonly pass through:

• Salt Lake City (SLC) - 91% of one-stop connections
• Portland (PDX) - 9% of one-stop connections

Yes. Flexible dates can save you up to 19% on flights from Idaho Falls to Seattle. Wednesday is the cheapest departure day at $307 round-trip on average, while Monday is the most expensive at $377, a difference of $70.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Only Alaska Airlines operates flights between Idaho Falls and Seattle.

Flying via Portland (PDX) gives the shortest average 1-stop total travel time at 4h 20m, compared with 4h 51m via Salt Lake City (SLC).

Seattle is 1 hour behind Idaho Falls (Pacific Time vs Mountain Time). Plan for the time shift when scheduling connections or first-day activities.

Some of the most popular sights in Seattle are Pike Place Market, Lumen Field and Space Needle. These are among the most viewed places in Seattle on KAYAK.

Among airlines operating Idaho Falls to Seattle flights:

• Alaska Airlines: offers extra legroom; offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Here are some options for this route, based on selected ticket types and cabin classes:

• Alaska Airlines: a cabin bag and a checked bag in Economy Class

Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.