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$125+ Cheap flights from Indianapolis to Seattle (IND - SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/19. Fares are subject to change and may not be available on all flights or dates of travel.
IND — SEA
Aug 31 — Sep 71
Mon 8/31
Mon 9/7
1 adult, Economy
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Find cheap flights from Indianapolis to Seattle with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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Cheapflights Tip: The best prices from Indianapolis to Seattle/Tacoma Intl are usually found in January or February, booked 42 days in advance, depart on a Friday or Wednesday and return on a Saturday

Cheap flight deals from Indianapolis to Seattle

Cheapest flights from Indianapolis to Seattle
Explore the most affordable flight options available from Indianapolis to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/188:49 pm
IND
-
SEA
1 stop15h 30m
Frontier
Thu 8/277:06 pm
SEA
-
IND
2 stops19h 20m
Frontier
Deal found 7/31$259
This CheapOair deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/58:49 pm
IND
-
SEA
1 stop15h 30m
Frontier
Sat 9/194:27 pm
SEA
-
IND
1 stop19h 50m
Frontier
Deal found 7/29$260
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/188:49 pm
IND
-
SEA
1 stop15h 30m
Multiple Airlines
Wed 8/268:53 pm
SEA
-
IND
1 stop13h 19m
Multiple Airlines
Deal found 7/28$262
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:53 pm
IND
-
SEA
1 stop15h 26m
Multiple Airlines
Wed 8/268:53 pm
SEA
-
IND
1 stop13h 19m
Multiple Airlines
Deal found 7/28$264
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/228:49 pm
IND
-
SEA
1 stop15h 30m
Frontier
Thu 8/277:06 pm
SEA
-
IND
2 stops19h 20m
Frontier
Deal found 7/31$266
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/298:49 pm
IND
-
SEA
1 stop15h 30m
Frontier
Sun 8/307:06 pm
SEA
-
IND
1 stop21h 58m
Frontier
Deal found 7/30$267
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/228:49 pm
IND
-
SEA
1 stop15h 30m
Frontier
Tue 8/257:06 pm
SEA
-
IND
1 stop21h 58m
Frontier
Deal found 7/31$268
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/258:49 pm
IND
-
SEA
1 stop15h 30m
Frontier
Thu 8/277:06 pm
SEA
-
IND
2 stops19h 20m
Frontier
Deal found 7/29$271
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/188:49 pm
IND
-
SEA
1 stop15h 30m
Frontier
Fri 8/287:06 pm
SEA
-
IND
1 stop21h 58m
Frontier
Deal found 7/31$272
This CheapOair deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/128:16 pm
IND
-
SEA
1 stop16h 35m
Frontier
Sat 10/177:41 pm
SEA
-
IND
1 stop11h 49m
Frontier
Deal found 7/31$274
This CheapOair deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/254:12 pm
IND
-
SEA
1 stop25h 56m
Frontier
Mon 9/284:27 pm
SEA
-
IND
1 stop19h 50m
Frontier
Deal found 7/26$275

Find flight deals from Indianapolis to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Indianapolis (IND) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$259
(Kiwi.com)

One-way from

$125
(Super.com)

Popular in

July

Cheapest in

January

Average price

$391

Good round-trip deal

$429 or less

Good one-way deal

$223 or less
Provider with most accurate pricing for Indianapolis-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Indianapolis-Seattle/Tacoma Intl flights.
Search Deals
From Indianapolis to Seattle/Tacoma Intl
Search Deals
One-way flight from Indianapolis to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($80 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals
Price to beat on a round-trip flight from Indianapolis to Seattle/Tacoma Intl.
Search Deals
Price to beat on a one-way flight from Indianapolis to Seattle/Tacoma Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Indianapolis to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 1, 2026.
Use the filters below to find and compare flights from Indianapolis to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IndianapolisSeattle

IND - SEA

INDSEA

Indianapolis

Sat 9/5

5:00 pm-11:57 pm

1 stop9h 57m

Seattle/Tacoma Intl

Sat 9/12

7:16 am-8:25 pm

1 stop10h 09m

$337

IndianapolisSeattle

IND - SEA

INDSEA

Indianapolis

Sat 9/12

6:35 am-1:10 pm

2 stops9h 35m

Seattle/Tacoma Intl

Wed 9/16

11:05 pm-12:40 pm

2 stops10h 35m

$347

IndianapolisSeattle

IND - SEA

INDSEA

Indianapolis

Sat 8/22

7:25 am-2:24 pm

1 stop9h 59m

Seattle/Tacoma Intl

Sat 8/29

5:00 am-2:41 pm

1 stop6h 41m

$347

IndianapolisSeattle

IND - SEA

INDSEA

Indianapolis

Sat 9/5

12:40 pm-8:43 pm

2 stops11h 03m

Seattle/Tacoma Intl

Sat 9/12

9:00 am-8:04 pm

1 stop8h 04m

$352
Quickest round-trip

IndianapolisSeattle

IND - SEA

INDSEA

Indianapolis

Thu 9/24

7:02 am-8:44 am

Nonstop4h 42m

Seattle/Tacoma Intl

Wed 9/30

9:59 pm-5:13 am

Nonstop4h 14m

$357

IndianapolisSeattle

IND - SEA

INDSEA

Indianapolis

Mon 9/14

7:02 am-8:44 am

Nonstop4h 42m

Seattle/Tacoma Intl

Mon 9/28

9:59 pm-5:13 am

Nonstop4h 14m

$357

IndianapolisSeattle

IND - SEA

INDSEA

Indianapolis

Wed 9/16

6:00 am-2:24 pm

2 stops11h 24m

Seattle/Tacoma Intl

Sat 9/26

7:25 pm-8:16 am

2 stops9h 51m

$357

IndianapolisSeattle

IND - SEA

INDSEA

Indianapolis

Wed 8/26

5:26 pm-7:10 pm

Nonstop4h 44m

Seattle/Tacoma Intl

Fri 9/4

10:00 pm-5:14 am

Nonstop4h 14m

$377

IndianapolisSeattle

IND - SEA

INDSEA

Indianapolis

Mon 11/9

7:20 pm-1:15 am

2 stops8h 55m

Seattle/Tacoma Intl

Fri 11/13

7:55 am-8:15 pm

1 stop9h 20m

$382

IndianapolisSeattle

IND - SEA

INDSEA

Indianapolis

Fri 9/18

7:02 am-8:44 am

Nonstop4h 42m

Seattle/Tacoma Intl

Sat 9/26

9:59 pm-5:13 am

Nonstop4h 14m

$387

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Indianapolis to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Indianapolis to Seattle in August.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
BudgetAirPrice Accuracy2 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
CheapTicketsDealPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Indianapolis-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Indianapolis-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Indianapolis-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Indianapolis-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Indianapolis-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Indianapolis to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Indianapolis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Indianapolis to Seattle

How far ahead should I book a flight from Indianapolis to Seattle?

Booking 41 days in advance of your planned departure date is, on average, the best time to get cheap flights from Indianapolis to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Indianapolis to Seattle?

Currently, January is the cheapest month in which you can book a flight from Indianapolis to Seattle (average of $288). Flying from Indianapolis to Seattle in July is currently the most expensive (average of $515). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IND to SEA?

Find hourly flight availability from Indianapolis to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 1, 2026.

When flying from Indianapolis to Seattle, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Indianapolis to Seattle?

Airfare is below average for this route at the moment.

Indianapolis to Seattle flights typically cost between $296 and $478 in August.
The cheapest round-trip price found within the last 5 days was $259 on Frontier (Aug 18-Aug 27).

The best insider tips for Indianapolis to Seattle flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Indianapolis to Seattle trip
Our travel experts
Brandon Schultz

Brandon Schultz

Expert on SEA

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more
Barbara Noe Kennedy

Barbara Noe Kennedy

Expert on IND

Award-winning travel journalist Barbara Noe Kennedy writes about destinations around the world—but her heart is in her home state of Virginia, where she’s always researching her next travel story.

Read more

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated August 1, 2026.
Get a feel of what it's like to fly with Southwest,Alaska Airlines, andDelta from Indianapolis to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,226 reviews

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.
Southwest
8.0
Very good
4,226 reviews
Southwest
8.0
Very good
4,226 reviews

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.
Alaska Airlines
7.9
Good
12,739 reviews
Southwest
8.0
Very good
4,226 reviews

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.
Delta
7.8
Good
8,494 reviews
Southwest
8.0
Very good
4,226 reviews

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.
United Airlines
7.4
Good
10,055 reviews
Southwest
8.0
Very good
4,226 reviews

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.
American Airlines
7.1
Good
11,845 reviews
Southwest
8.0
Very good
4,226 reviews

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.

Related info for your journey

Find useful and relevant information for your journey from Indianapolis to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Indianapolis to Seattle?

    Booking a flight from Indianapolis (IND) to Seattle/Tacoma Intl (SEA) is your only option if you wish to fly from Indianapolis to Seattle. On a typical day, there is 1 flight from Indianapolis to Seattle/Tacoma Intl, all of which are around 4h 42m for a nonstop flight. You can also purchase a plane ticket from 7 airlines when you book a flight from Indianapolis to Seattle.

  • How popular is this Indianapolis to Seattle flight route?

    This flight path from Indianapolis to Seattle/Tacoma Intl was viewed by 21 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Indianapolis to Seattle?

    Delta, Southwest, and United Airlines can get you from Indianapolis to Seattle in just under 9h 45m. Your travel time can differ by up to 14m. Indianapolis and Seattle are separated by a distance of 1860 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Indianapolis to Seattle round-trip?

    Cheapflights users have booked flights from Indianapolis to Seattle round-trip from $112. Other airlines that can offer you cheap pricing are Delta, from $124, and Hawaiian Airlines, from $158. Frontier is priced at 68% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Indianapolis to Seattle one-way?

    The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $79. However, be on the lookout for offers from Southwest and Delta, as they are both options that can get you from Indianapolis to Seattle for a low price.

  • What are the most reliable airlines from Indianapolis to Seattle?

    Before booking your flight to Seattle from Indianapolis, check out the most reliable airlines to get you to your destination on time: Finnair (100%), Alaska Airlines (85%), American Airlines( 78%).

  • What are the cheapest flights from Indianapolis to Seattle?

    Looking for the cheapest flight from Indianapolis to Seattle? While on average our users pay $411, our data indicates the cheapest price to be $212. The most popular route (Indianapolis - Seattle/Tacoma Intl), is priced around $259.

  • Can I find deals for flights from Indianapolis to Seattle that include hotel bookings?

    Yes. In addition to deals on Indianapolis to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Indianapolis to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Indianapolis to Seattle.

  • Can I find deals for business class flights from Indianapolis to Seattle?

    Yes. Cheapflights offers flight deals from Indianapolis to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Indianapolis to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Indianapolis to Seattle (average of $288). Flying from Indianapolis to Seattle in July is currently the most expensive (average of $515). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Renton
Tacoma
Lacey
Leavenworth
Olympia
Edmonds
Tukwila
Snoqualmie
Tumwater
Centralia
Puyallup
Kent
Ellensburg
Fife
Marysville
Ocean Shores
Lakewood
Lynnwood
Shoreline

Browse thousands of different options on Cheapflights for your next trip

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Top 7 airlines flying from Indianapolis to Seattle

Discover the top 7 airlines that operate flights from Indianapolis to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$112Average$278FlexibilityNo cancel feeOn-time62%
DeltaCheapest$124Average$248FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$158Average$297FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$176Average$418FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$195Average$368FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$237Average$432FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$238Average$328FlexibilityNo cancel feeOn-time69%

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