$176 Cheap Flights from Bloomington (BMI) to Seattle (SEA)

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Cheap Flights from Bloomington to Seattle (BMI-SEA)

Prices were available within the past 7 days and start at $176 for one-way flights and $351 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Delta
American Airlines
Delta
Delta
Delta
American Airlines
American Airlines
American Airlines
American Airlines
Flights from Bloomington (BMI) to Seattle (SEA)
Origin airport
Central Illinois Regional
Destination airport
Seattle - Tacoma Intl.
Airlines serving
American Airlines, Delta
Roundtrip price
$350
Distance
1713 mi

Bloomington to Seattle Flights

The cheapest times to fly from Bloomington to Seattle

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Bloomington to Seattle are during the month of June. You can find some of the cheapest flights from Bloomington to Seattle with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Bloomington to Seattle

Sunday is one of the best days to book for cheap flights from Bloomington to Seattle: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Bloomington to Seattle

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Bloomington to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $176 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Bloomington to Seattle flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Bloomington to Seattle airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

Is it cheaper to buy a plane ticket from BMI to Sea-Tac Airport last minute?
When it comes to booking your flights, being prepared pays dividends. While it’s possible to find a deal on a Central Illinois Regional Airport to Sea-Tac Airport flight at the last minute, prices usually don’t get cheaper as the date of departure nears. Based on flight pricing and demand studies in 2022, we have found that the sweet spot to lock in a domestic flight is between 28 – 35 days in advance. For international travel it’s three to four months.
What airports do you fly into for Seattle from Bloomington?
With Seattle - Tacoma Intl. Airport (SEA), Renton Municipal Airport (RNT) and Boeing Field Airport (BFI) to select from, getting from Bloomington to Seattle is simple. The city’s major gateway, Seattle - Tacoma Intl. Airport (SEA), is around 12 mi south of the downtown area. Along with ticket costs, consider things like transportation options from the airport and the distance to your hotel when choosing where to fly into. Get your Seattle adventure off to an exciting start by checking out Space Needle and Pike Place Market.
Can I change the date of my flight from Central Illinois Regional Airport (BMI) to Sea-Tac Airport?
You can make changes to your BMI to Sea-Tac Airport ticket through the Expedia Trips portal. But before you make any amendments, look over the fare rules in your itinerary to learn what you’re able to do and if change fees apply. Some airlines charge a change fee per person, in addition to any difference in fares. But if you booked in the last 24 hours, you may be able to cancel for free and organize new flights. You can also find your way to our Customer Service portal for more info and to connect with our Virtual Agent.

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*Available to One Key members.