Cheap Flights from Seattle (SEA) to Sterling (SQI)

Popular airlines from Seattle-Tacoma International Airport (SEA) to Sterling, IL (SQI-Whiteside County)

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Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Sterling, IL (SQI-Whiteside County) cost?
Snag a cheap one-way flight or cheap return flight from Seattle - Tacoma Intl. Airport (SEA) to Sterling, IL (SQI-Whiteside County) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Sterling, IL (SQI-Whiteside County)?
Planning your getaway for is a great way to save, as it's the cheapest month for flights between SEA and SQI. You'll typically find the lowest fares during the off-season.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Sterling, IL (SQI-Whiteside County)?
To find the cheapest airline flying from SEA to SQI, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Sterling, IL (SQI-Whiteside County)?
Nonstop flights from Seattle - Tacoma Intl. Airport (SEA) to Sterling, IL (SQI-Whiteside County) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your travel details and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SEA to SQI?
Generally you'll have the most choice when it comes to flights on a Friday. Tuesdays are often the quietest.* However, this can change based on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Sterling, IL (SQI-Whiteside County)?
To reach Sterling, IL (SQI-Whiteside County) without delays, opt for a flight that leaves Seattle - Tacoma Intl. Airport (SEA) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Sterling, IL (SQI-Whiteside County) last-minute?
Booking your ticket from SEA to SQI right before your trip is typically more expensive. However, if you're flexible with your schedule, you could land a cheap last-minute fare.
Is it cheaper to book a SEA to SQI flight and hotel package?
Compared with arranging flights and hotels separately, booking a SEA to SQI flight and hotel package with Expedia could result in significant savings. Better still, having everything in one place will take the hassle out of travel planning. Simply secure your flights and select from our extensive range of stays, then tailor your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Sterling, IL (SQI-Whiteside County)?
In most cases, you're able to reschedule or cancel your SEA to SQI flight. However, additional fees may apply, especially if you booked over 24 hours ago. Check your itinerary for the airline's guidelines and fees on flight changes, or if you want more details, go to our Customer Service portal.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Whiteside County
Distance
1639 mi

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Seattle to Sterling Flights

The cheapest times to fly from Seattle to Sterling

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 Seattle to Sterling are during the month of . You can find some of the cheapest flights from Seattle to Sterling with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Sterling

Sunday is one of the best days to book for cheap flights from Seattle to Sterling: 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 Seattle to Sterling

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 Seattle to Sterling in 2025. You can also book with separate airlines for your outbound and return journeys, from 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 Seattle to Sterling 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 Seattle to Sterling 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.

 

Seattle to Sterling Flights

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*Available to One Key members.