PDX

$59 Find Cheap Flights from Illinois to Portland

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Portland departing on 12/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$131
Overall average: $399
Frontier
Sat 12/13Thu 1/1
STL - PDX • 1 stop
Cheapest non-stop
$217
Typical prices: $420-$439
Southwest
Sat 12/6Tue 12/9
MDW - PDX • Non-stop
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We hope you love your trip to Portland!
Flight Deals
Useful Info
Flight Deals

Cheap Flights from Illinois to Portland

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Illinois to Portland that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Illinois to Portland

Sat, Dec 13 - Thu, Jan 1
Frontier Logo
7:43 pm - 11:56 amSTL-PDX
18h 13m1 stop
Frontier Logo
12:47 pm - 10:02 amPDX-STL
19h 15m1 stop
$131Frontier
Find Deal
Mon, Dec 22 - Thu, Jan 1
Frontier Logo
10:10 pm - 1:24 pmSTL-PDX
17h 14m1 stop
Frontier Logo
12:47 pm - 10:02 amPDX-STL
19h 15m1 stop
$139Frontier
Find Deal
Sat, Dec 20 - Thu, Jan 1
Frontier Logo
7:43 pm - 11:43 amSTL-PDX
18h 00m1 stop
Frontier Logo
12:47 pm - 10:02 amPDX-STL
19h 15m1 stop
$144Frontier
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Thu, Dec 4 - Sun, Dec 7
Multiple Airlines Logo
9:06 pm - 4:37 pmORD-PDX
21h 31m1 stop
Multiple Airlines Logo
5:32 pm - 6:05 amPDX-ORD
10h 33m1 stop
$212Multiple Airlines
Find Deal
Sat, Dec 6 - Tue, Dec 9
Southwest Logo
9:40 am - 12:15 pmMDW-PDX
4h 35mnonstop
Southwest Logo
6:15 am - 12:10 pmPDX-MDW
3h 55mnonstop
$217Southwest
Find Deal
Sat, Dec 6 - Tue, Dec 9
American Airlines Logo
9:57 am - 12:38 pmORD-PDX
4h 41mnonstop
American Airlines Logo
11:37 am - 5:52 pmPDX-ORD
4h 15mnonstop
$217American Airlines
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Thu, Nov 27 - Sat, Dec 6
Alaska Airlines Logo
7:00 am - 9:39 amORD-PDX
4h 39mnonstop
Alaska Airlines Logo
7:04 am - 1:09 pmPDX-ORD
4h 05mnonstop
$218Alaska Airlines
Find Deal
Wed, Dec 3 - Sat, Dec 6
American Airlines Logo
8:10 am - 10:47 amORD-PDX
4h 37mnonstop
American Airlines Logo
1:28 pm - 7:46 pmPDX-ORD
4h 18mnonstop
$224American Airlines
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Fri, Dec 12 - Fri, Dec 19
Multiple Airlines Logo
9:06 pm - 8:53 amORD-PDX
13h 47m1 stop
Multiple Airlines Logo
8:45 pm - 9:00 pmPDX-ORD
22h 15m1 stop
$226Multiple Airlines
Find Deal
Sat, Dec 6 - Mon, Dec 8
Southwest Logo
9:40 am - 12:15 pmMDW-PDX
4h 35mnonstop
Southwest Logo
6:15 am - 12:10 pmPDX-MDW
3h 55mnonstop
$227Southwest
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Good to know

Low seasonJanuary
Cheapest flight$59
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly with an average 1% increase in price.
Flight from St. Louis to Portland

FAQs for booking flights from Illinois to Portland

  • How does KAYAK find such low prices on flights from Illinois to Portland?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Portland.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Portland?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portland from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Illinois to Portland?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Portland with an airline and back to Illinois with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Portland?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Portland from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Seaside
Vancouver
Salem
The Dalles
Lake Oswego
Clackamas
Stevenson
Government Camp
Carson
Kelso
Gleneden Beach
Gladstone
Oceanside
Dundee
Durham

Everything you need to know for your flight to Portland

Information on the airport you'll fly into in Portland

Portland (PDX)