Cheap flights from Seattle to Indiana from $99

The cheapest month to fly to Indiana from Seattle is in January. Flight prices, which tend to average around $320, are often lower during this time because this is during the off-season. The month of October is another great option to travel to Indiana, with average flight prices from Seattle averaging around $381.

Our data shows that Saturday is the least expensive day to fly to Indiana. Tickets to fly out on this day can be as low as $407. On the other hand, Tuesday is the most expensive day to depart from Seattle because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $641.

Our data shows that the cheapest Seattle to Indiana flights are usually those with departure times in the evening. Our users have found flights to Indiana in the evening for as low as $455. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $528 on average. Flights to Indiana from Seattle in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You are more likely to see cheaper flights to Indiana from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Indiana for around $422 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Indiana from Seattle for as low as $259 on momondo.

There are 3 cabin classes available to choose from on Seattle to Indiana flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

Alaska Airlines, American Airlines and United Airlines are the top three most popular airlines that fly to Indiana from Seattle according to our data. Alaska Airlines is the first choice among our users, with 52% of people opting to fly with this airline when traveling to Indiana. Keep in mind that there are 6 different airlines that fly to Indiana on a routine basis, so you have a few additional options to choose from.

The number of flights available between Seattle and Indiana is 44 per day as of September 2026. The most frequent departure time is 9:00PM, with 55% of daily flights leaving in the evening.

As of September 2026, 311 flights take off from Seattle and land in Indiana each week. The most common flight departure day for this route is Mon, with 21% of weekly flights taking off on this day.