Cheap flights from Idaho Falls to Seattle from $119
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho Falls to Seattle departing on 7/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Alaska Airlines flights from Idaho Falls to Seattle
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Delta flights from Idaho Falls to Seattle
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How to get the cheapest flight ticket from Idaho Falls to Seattle
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between Idaho Falls and Seattle?
What is the cheapest month to fly to Seattle?
In general, April is the cheapest month to fly from Idaho Falls to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $227. If you don’t want to visit Seattle in April, then you should wait until October to fly from Idaho Falls, when ticket prices are also cheap, with an average price of $238.
What is the cheapest day to depart on your flight to Seattle?
On average, the least expensive day to fly to Seattle from Idaho Falls is on a Thursday. momondo users have found tickets for Thursday departures for as low as $421. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Tuesday is the most expensive day to depart from Idaho Falls because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $518.
What is the cheapest time of day to depart on your flight to Seattle?
Flying to Seattle from Idaho Falls in the evening is the least expensive time of day to depart. momondo users have found prices as low as $240 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $475. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.
What is the cheapest Idaho Falls Fanning Field to Seattle/Tacoma Intl flight route?
Fly from Idaho Falls Fanning Field to Seattle/Tacoma Intl for the best Idaho Falls Fanning Field - Seattle/Tacoma Intl flight prices
How far in advance should I book a flight to Seattle?
You are more likely to see cheaper flights to Seattle from Idaho Falls when booking 20 weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $307 when searching 20 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Idaho Falls for as low as $230 on momondo.
What cabin class options are available on Idaho Falls Fanning Field to Seattle/Tacoma Intl flights?
There are 4 cabin classes available to choose from on Idaho Falls Fanning Field to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Idaho Falls Fanning Field to Seattle/Tacoma Intl?
Hawaiian Airlines, Delta, and Alaska Airlines are the most popular carriers operating from Idaho Falls Fanning Field to Seattle/Tacoma Intl
What airlines fly to Seattle?
Alaska Airlines, Delta and Hawaiian Airlines are the top three most popular airlines that fly to Seattle from Idaho Falls according to our data. Alaska Airlines is the first choice among our users, with 81% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 3 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.
How many flights depart from Idaho Falls to Seattle on average per day?
As of June 2025, 5 flights take off from Idaho Falls and land in Seattle each day. The most common flight departure time for this route is 6:00AM, with 57% of daily flights taking off at noon.
How many flights depart from Idaho Falls to Seattle on average per week?
As of June 2025, 35 flights take off from Idaho Falls and land in Seattle each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.
When to book flights from Idaho Falls to Seattle
Cheap Idaho Falls to Seattle (IDA to SEA) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Idaho Falls to Seattle
How far is Idaho Falls Fanning Field to Seattle/Tacoma Intl by plane?
The distance between Idaho Falls Fanning Field and Seattle/Tacoma Intl is about 574.1 mi. A reasonable flight in good conditions will take 1h 56m.
When did momondo last update prices for flights from Idaho Falls Fanning Field Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Idaho Falls Fanning Field Airport to Seattle/Tacoma Intl Airport are updated daily.
How many operators does momondo search for flights from Idaho Falls Fanning Field Airport to Seattle/Tacoma Intl Airport?
The number of operators available for flights from Idaho Falls Fanning Field Airport to Seattle/Tacoma Intl Airport is 3 as of June 2025.
How old do you have to be to fly from Idaho Falls Fanning Field Airport to Seattle/Tacoma Intl Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho Falls Fanning Field Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Idaho Falls to Seattle?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Idaho Falls to Seattle is Embraer 175 (78.14% of total bookings). The next most popular plane models are Airbus A320-100/200 (3.64%), Airbus A319 (2.02%), and Boeing 737 MAX 8 (1.62%).
What is the most popular airline from Idaho Falls to Seattle?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Idaho Falls to Seattle is Alaska Airlines (91% of total bookings). The next most popular airlines are Hawaiian Airlines (5%) and Delta (4%).
Best airlines flying from Idaho Falls to Seattle
Compare and see reviews for airlines that fly from Idaho Falls to Seattle with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $118 | Free Cancellation | Rating 8.0 7,950 reviews | |||
| PriceFrom $119 | Free Cancellation | Rating 7.8 2,494 reviews | |||
| PriceFrom $191 | Free Cancellation | Rating 8.0 10,000 reviews |
Alaska Airlines Flights From Idaho Falls to Seattle
Across 14 Alaska Airlines flights from Idaho Falls to Seattle this week, the average price was $305, with the best Alaska Airlines deals starting from $191 round-trip. 10,000 users have rated Alaska Airlines on momondo, with an average score of 8.0/10.
Hawaiian Airlines Flights From Idaho Falls to Seattle
Hawaiian Airlines (7.8/10 from 2,494 reviews) operates around 14 flights from Idaho Falls to Seattle in any given week. The average Hawaiian Airlines airfare for this route is around $257, with deals from around $119 rare but found on momondo. Referenced prices are for round-trip Idaho Falls to Seattle flight searches in the last 72 hours.
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Why should I use momondo to find a flight deal from Idaho Falls to Seattle?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Idaho Falls to Seattle. momondo saves you time and could save you money on your trip.
Can I find flights from Idaho Falls to Seattle with flexible booking policies on momondo?
All flight searches from Idaho Falls to Seattle on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Idaho Falls to Seattle?
Once you have performed a search for Idaho Falls to Seattle flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Idaho Falls to Seattle right now. Can momondo alert me if prices change?
Yes. momondo can track prices for Idaho Falls to Seattle flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.