PDX

$84 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 3/21. 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
$191
Overall average: $316
Frontier
Mon 4/20Wed 4/22
STL - PDX • 1 stop
Cheapest non-stop
$207
Typical prices: $257-$394
American Airlines
Fri 5/8Tue 5/12
ORD - 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

Mon, Apr 20 - Wed, Apr 22
Frontier Logo
8:12 pm - 1:02 pm
STL
-
PDX
18h 50m
1 stop
Frontier Logo
1:48 pm - 7:12 pm
PDX
-
STL
27h 24m
1 stop
$191Frontier
Sat, Feb 21 - Wed, Feb 25
Southwest Logo
8:05 am - 8:35 pm
MDW
-
PDX
14h 30m
1 stop
Southwest Logo
6:30 am - 12:25 pm
PDX
-
MDW
3h 55mnonstop
$204Southwest
Thu, Apr 30 - Sun, May 3
Multiple Airlines Logo
10:55 am - 11:03 am
ORD
-
PDX
26h 08m
1 stop
Multiple Airlines Logo
7:00 am - 1:23 pm
PDX
-
ORD
4h 23mnonstop
$204Multiple Airlines
Wed, Feb 18 - Sun, Feb 22
United Airlines Logo
9:10 am - 11:55 am
ORD
-
PDX
4h 45mnonstop
United Airlines Logo
11:59 pm - 5:53 am
PDX
-
ORD
3h 54mnonstop
$207United Airlines
Sat, Mar 7 - Tue, Mar 10
United Airlines Logo
4:40 pm - 7:14 pm
ORD
-
PDX
4h 34mnonstop
United Airlines Logo
1:00 pm - 9:29 pm
PDX
-
ORD
6h 29m
1 stop
$210United Airlines
Tue, Mar 3 - Mon, Mar 9
Multiple Airlines Logo
2:07 pm - 4:50 pm
ORD
-
PDX
4h 43mnonstop
Multiple Airlines Logo
12:52 pm - 6:08 am
PDX
-
ORD
15h 16m
1 stop
$213Multiple Airlines
Wed, Apr 8 - Wed, Apr 15
Delta Logo
2:05 pm - 8:25 pm
MDW
-
PDX
8h 20m
1 stop
Delta Logo
11:15 pm - 8:47 am
PDX
-
MDW
7h 32m
1 stop
$217Delta
Sat, Feb 28 - Fri, Mar 6
Delta Logo
5:15 pm - 10:52 pm
ORD
-
PDX
7h 37m
1 stop
Delta Logo
12:40 am - 10:25 am
PDX
-
ORD
7h 45m
1 stop
$217Delta
Tue, Feb 10 - Tue, Feb 17
American Airlines Logo
11:20 am - 1:53 pm
ORD
-
PDX
4h 33mnonstop
American Airlines Logo
11:35 pm - 5:32 am
PDX
-
ORD
3h 57mnonstop
$218American Airlines
Fri, Apr 17 - Mon, Apr 20
American Airlines Logo
7:05 am - 1:22 pm
STL
-
PDX
8h 17m
1 stop
American Airlines Logo
11:59 pm - 11:19 am
PDX
-
STL
9h 20m
1 stop
$273American Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$84
Best time to beat the crowds with an average 10% 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)