Cheap Flights From Seattle - Tacoma Intl. (SEA) To O'Hare Intl. (ORD)

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Cheapest Flights from Seattle (SEA) to Chicago (ORD)

The cheapest flights to O'Hare Intl. found within the past 7 days were CA $256 round trip and CA $118 one way. Prices and availability subject to change. Additional terms may apply.

Best O'Hare Intl. Flight and Hotel Packages

O'Hare Intl. flight + hotel packages - economy flights

Price found within the past 48 hours. Click for updated prices.
Hotel Felix River North/Magnificent Mile
Pendry Chicago
The Emily Hotel
Arlo Chicago
Aloft Chicago Downtown River North
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Frequently asked questions

Are there direct flights from Seattle - Tacoma Intl. Airport (SEA) to O'Hare Airport?
Alaska Airlines and United Airlines are a couple of the airlines that sell nonstop flights from Seattle - Tacoma Intl. Airport (SEA) to O’Hare Airport. If you’re itching to get to where you’re headed without swapping planes, these are your best options.
What airlines fly from SEA to O'Hare Intl. Airport (ORD)?
If you’re heading from Seattle to Chicago, there is a good range of airlines that’ll fly you there. Choose a seat with these popular air companies offering direct flights from Seattle - Tacoma Intl. Airport (SEA) to ORD:

  • Alaska Airlines - (AS) with 152 flights every month
  • United Airlines - (UA) with 152 flights every month
  • American Airlines - (AA) with 112 flights every month
  • Delta - (DL) with 78 flights every month

What is the best day to buy a plane ticket?
Airfares offered on Friday tend to be the cheapest, according to flight demand on Travelocity.ca in 2021. Purchasing your airfares on a Thursday or Saturday can also provide better value, however our advice if you’re looking to save money is to avoid booking on a Wednesday or Sunday. Our data shows that those two days have the highest ticket values on average, so keep this in mind if you’re browsing flight deals.
What are the cheapest days to fly?
Frequent travellers may already know this, but earlier in the week is often the cheapest time to fly. Flights departing on a Monday are the cheapest of the week. Since flights towards the middle of the week tend to be more popular, this causes the prices to rise. This is why, on average, airfares booked on Travelocity.ca in 2021 were most expensive for Wednesday departures.
How far in advance can you book a flight?
Here’s the deal: It is typically possible to start comparing international airfares on Travelocity.ca up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2-4 weeks prior to their travel dates.*According to flight demand on Travelocity.ca from January to December 2021. Savings are subject to change and may vary depending on selections made.

Popular Flight Routes from Seattle (SEA)

Travelers at SEA love to visit these top cities. Roam to the top destinations from Seattle (SEA) today with the cheap prices from Travelocity!

Popular Flight Routes from Chicago (ORD)

Travelers at ORD love to visit these top cities. Roam to the top destinations from Chicago(ORD) today with the cheap prices from Travelocity!

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.