Cheap flights from Indiana to Seattle from $128

In general, January is the cheapest month to fly from Indiana to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $314. If you don’t want to visit Seattle in January, then you should wait until February to fly from Indiana, when ticket prices are also cheap, with an average price of $334.

On average, the least expensive day to fly to Seattle from Indiana is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $493. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Indiana because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $588.

Flying to Seattle from Indiana in the evening is the least expensive time of day to depart. momondo users have found prices as low as $471 when looking at flights departing in the evening. Flights to Seattle are more costly in the afternoon, with an average ticket price of $535. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Indianapolis to Seattle/Tacoma Intl for the best Indiana - Seattle/Tacoma Intl flight prices

You are more likely to see cheaper flights to Seattle from Indiana when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $370 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Indiana for as low as $314 on momondo.

There are 4 cabin classes available to choose from on Indiana to Seattle flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Southwest, Delta, and Alaska Airlines are the most popular carriers operating from Indiana to Seattle/Tacoma Intl

Alaska Airlines, American Airlines and United Airlines are the top three most popular airlines that fly to Seattle from Indiana according to our data. Alaska Airlines is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 7 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

As of September 2026, there are 45 flights per day flying from Indiana to Seattle. The most common time of day flights depart is 5:00PM, with 58% of flights taking off in the afternoon.

321 flights are operational weekly from Indiana to Seattle as of September 2026. The most popular departure day for this route is Tue, with 20% of flights per week taking off on this day.