Cheap flights from Washington to Idaho Falls from $48
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Idaho Falls departing on 5/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Washington to Idaho Falls
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Cheap direct flights
Allegiant Air flights from State of Washington to Idaho Falls
Our best Allegiant Air deals on State of Washington to Idaho Falls flight tickets
Delta flights from State of Washington to Idaho Falls
Our best Delta deals on State of Washington to Idaho Falls flight tickets
See travel insights to Idaho Falls from
How to get the cheapest flight ticket from State of Washington to Idaho Falls
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 cheapest month to fly to Idaho Falls?
If you aren’t able to travel to Idaho Falls during the month of February, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $268.
What is the cheapest day to depart on your flight to Idaho Falls?
Our data shows that Wednesday is the least expensive day to fly to Idaho Falls. Tickets to fly out on this day can be as low as $297. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Idaho Falls on Monday is $431.
What is the cheapest time of day to depart on your flight to Idaho Falls?
Our most recent data shows that the best time of day to fly to Idaho Falls is in the afternoon. Flights from State of Washington to Idaho Falls during this time can be as low as $239. Try not to purchase tickets in the morning because they tend to be around $359. Of course, these prices can vary depending on the time of year and what airport you fly to.
What is the cheapest Washington to Idaho Falls Fanning Field flight route?
Fly from Seattle/Tacoma Intl to Idaho Falls Fanning Field for the best Washington - Idaho Falls Fanning Field flight prices
How far in advance should I book a flight to Idaho Falls?
You are more likely to see cheaper flights to Idaho Falls from State of Washington when booking 17 weeks ahead of your departure date. In general, you can expect to find flights to Idaho Falls for around $328 when searching 17 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Idaho Falls from State of Washington for as low as $222 on momondo.
What cabin class options are available on Washington to Idaho Falls Fanning Field flights?
There are 4 cabin classes available to choose from on Washington to Idaho Falls Fanning Field 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 Washington to Idaho Falls Fanning Field?
Allegiant Air, Alaska Airlines, and Delta are the most popular carriers operating from Washington to Idaho Falls Fanning Field
What airlines fly to Idaho Falls?
Alaska Airlines, Delta and United Airlines are the top three most popular airlines that fly to Idaho Falls from State of Washington according to our data. Alaska Airlines is the first choice among our users, with 55% of people opting to fly with this airline when traveling to Idaho Falls. Keep in mind that there are 4 different airlines that fly to Idaho Falls on a routine basis, so you have a few additional options to choose from.
How many flights depart from State of Washington to Idaho Falls on average per day?
As of May 2025, there are 5 flights per day flying from State of Washington to Idaho Falls. The most common time of day flights depart is 7:00PM, with 64% of flights taking off in the evening.
How many flights depart from State of Washington to Idaho Falls on average per week?
The number of flights available between State of Washington and Idaho Falls is 38 per week as of May 2025. The most frequent departure day is Mon, with 18% of weekly flights leaving on this day.
Cheap State of Washington to Idaho Falls flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from State of Washington to Idaho Falls
When did momondo last update prices for flights from Washington to Idaho Falls Fanning Field Airport?
Prices for flights from Washington to Idaho Falls Fanning Field Airport are updated daily.
How many operators does momondo search for flights from Washington to Idaho Falls Fanning Field Airport?
As of May 2025, there are 3 operators available to choose from for flights from Washington to Idaho Falls Fanning Field Airport.
How old do you have to be to fly from Washington to Idaho Falls Fanning Field Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington to Idaho Falls Fanning Field Airport.
What documentation or ID do you need to fly to Idaho Falls Fanning Field Airport?
The travel and health documents you'll need for your trip to Idaho Falls Fanning Field Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Idaho Falls Fanning Field Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from State of Washington to Idaho Falls?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from State of Washington to Idaho Falls is Embraer 175 (96.23% of total bookings). The next most popular plane model is Boeing 737-800 Passenger/BBJ2 (winglets) (3.77%).
Best airlines flying from State of Washington to Idaho Falls
Compare and see reviews for airlines that fly from State of Washington to Idaho Falls with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $178 | Free Cancellation | Rating 8.0 9,994 reviews | |||
| PriceFrom $320 | Free Cancellation | Rating 8.0 7,944 reviews |
Traveling to a place near Idaho Falls?
Book flights to Idaho Falls if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Washington to Idaho Falls?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington to Idaho Falls for you.
Can I find flights from Washington to Idaho Falls with flexible booking policies on momondo?
All flight searches from Washington to Idaho Falls on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Washington to Idaho Falls?
momondo helps you find the best flight between Washington and Idaho Falls by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from Washington to Idaho Falls right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Idaho Falls, momondo offers a useful price alert feature which will track prices for flights to Idaho Falls from Washington and alert you when they change.