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

If you’d love to venture from O’Hare Airport to Sea-Tac Airport as fast as possible, you’ll be happy to know multiple airlines operate direct flights. Select your preferred seat with Alaska Airlines or United Airlines.

If you’re eager to fly direct from O’Hare Airport to SEA, you won’t have a problem finding a fare. Here are the best airlines that advertise nonstop services on this route:

• Alaska Airlines - (AS) with 152 flights every month
• United Airlines - (UA) with 152 flights every month
• American Airlines - (AA) with 108 flights every month
• Delta - (DL) with 78 flights every month

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.

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.

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.